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1

Salt Wells Geothermal Exploratory Drilling Program EA  

Open Energy Info (EERE)

Salt Wells Geothermal Exploratory Drilling Program EA Salt Wells Geothermal Exploratory Drilling Program EA (DOI-BLM-NV-C010-2009-0006-EA) Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Salt Wells Geothermal Exploratory Drilling Program EA (DOI-BLM-NV-C010-2009-0006-EA) Abstract No abstract available. Author Bureau of Land Management Published U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada, 09/14/2009 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Salt Wells Geothermal Exploratory Drilling Program EA (DOI-BLM-NV-C010-2009-0006-EA) Citation Bureau of Land Management. Salt Wells Geothermal Exploratory Drilling Program EA (DOI-BLM-NV-C010-2009-0006-EA) [Internet]. 09/14/2009. Carson City, NV. U.S. Department of the Interior- Bureau of Land Management,

2

Exploratory Well At Raft River Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

7) 7) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Exploratory Well Activity Date 1977 Usefulness not indicated DOE-funding Unknown Notes Raft River Geothermal Exploratory Hole No. 4, RRGE-4 drilled. During this time Raft River geothermal exploration well sidetrack-C also completed. References Kunze, J. F.; Stoker, R. C.; Allen, C. A. (14 December 1977) Update on the Raft River Geothermal Reservoir Covington, H.R. (1 January 1978) Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal exploration well sidetrack-C Retrieved from "http://en.openei.org/w/index.php?title=Exploratory_Well_At_Raft_River_Geothermal_Area_(1977)&oldid=473847"

3

Exploratory Well At Raft River Geothermal Area (1975) | Open Energy  

Open Energy Info (EERE)

5) 5) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Raft River Geothermal Area (1975) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Exploratory Well Activity Date 1975 Usefulness not indicated DOE-funding Unknown Exploration Basis First exploratory well Notes Raft River Geothermal Exploratory Hole No. 1 (RRGE-1) is drilled. References Reynolds Electrical and Engineering Co., Inc., Las Vegas, Nev. (USA) (1 October 1975) Raft River Geothermal Exploratory Hole No. 1 (RRGE-1). Completion report Kunze, J.F. (1 May 1977) Geothermal R and D project report, October 1, 1976--March 31, 1977 Oriel, S. S.; Williams, P. L.; Covington, H. R.; Keys, W. S.; Shaver, K. C. (1 January 1978) Deep drilling data Raft River geothermal

4

Exploratory Well At Raft River Geothermal Area (1976) | Open Energy  

Open Energy Info (EERE)

76) 76) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Raft River Geothermal Area (1976) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Exploratory Well Activity Date 1976 Usefulness not indicated DOE-funding Unknown Exploration Basis Second and third exploratory wells drilled Notes Raft River Geothermal Exploratory Hole No. 2, RRGE-2 drilled. During this period, a third well, RRGE-3 was also drilled and well production was tested. Down-hole data was obtained from RRGE-3. References Speake, J.L. (1 August 1976) Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion report Kunze, J.F. (1 October 1976) Geothermal R and D Project report for period April 1, 1976 to June 30, 1976

5

Exploratory Well At Raft River Geothermal Area (1950) | Open Energy  

Open Energy Info (EERE)

50) 50) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Raft River Geothermal Area (1950) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Exploratory Well Activity Date 1950 Usefulness not indicated DOE-funding Unknown Exploration Basis Agricultural Wells Notes The geothermal resource at Raft River was discovered sometime prior to 1950 when two shallow agricultural wells, the Bridge and Crank wells, encountered boiling water. References Diek, A.; White, L.; Roegiers, J.-C.; Moore, J.; McLennan, J. D. (1 January 2012) BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM RESERVOIR DEVELOPMENT Retrieved from "http://en.openei.org/w/index.php?title=Exploratory_Well_At_Raft_River_Geothermal_Area_(1950)&oldid=473844

6

Salt Wells Geothermal Exploratory Drilling Program EA(DOI-BLM...  

Open Energy Info (EERE)

09142009 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Salt Wells Geothermal Exploratory Drilling Program EA (DOI-BLM-NV-C010-2009-...

7

Exploratory Well At Coso Geothermal Area (1977-1978) | Open Energy  

Open Energy Info (EERE)

77-1978) 77-1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Coso Geothermal Area (1977-1978) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Exploratory Well Activity Date 1977 - 1978 Usefulness useful DOE-funding Unknown Notes 1477-m Coso Geothermal Exploration Hole (CGEH) No. 1 well drilled .The objective of well and future well testing is to determine the well productivity and geothermal reservoir parameters. References Energy Research and Development Administration, Las Vegas, NV (USA). Nevada Operations Office (1 June 1977) Operations plan Coso geothermal exploratory hole No. 1 (CGEH-1) Department of Energy, Las Vegas, Nev.. Nevada Operations Office; Naval Weapons Center, China Lake, Calif.; California Univ., Berkeley.

8

Session: Long Valley Exploratory Well  

DOE Green Energy (OSTI)

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of four presentations: ''Long Valley Exploratory Well - Summary'' by George P. Tennyson, Jr.; ''The Long Valley Well - Phase II Operations'' by John T. Finger; ''Geologic results from the Long Valley Exploratory Well'' by John C. Eichelberger; and ''A Model for Large-Scale Thermal Convection in the Long Valley Geothermal Region'' by Charles E. Hickox.

Tennyson, George P. Jr.; Finger, John T.; Eichelberger, John C.; Hickox, Charles E.

1992-01-01T23:59:59.000Z

9

Exploratory Well | Open Energy Information  

Open Energy Info (EERE)

Exploratory Well Exploratory Well Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Exploratory Well Details Activities (8) Areas (3) Regions (0) NEPA(5) Exploration Technique Information Exploration Group: Drilling Techniques Exploration Sub Group: Exploration Drilling Parent Exploration Technique: Exploration Drilling Information Provided by Technique Lithology: Can provide core or cuttings Stratigraphic/Structural: Identify stratigraphy and structural features within a well Hydrological: -Water samples can be used for geochemical analysis -Fluid pressures can be used to estimate flow rates Thermal: -Temperatures can be measured within the hole -Information about the heat source Dictionary.png Exploratory Well: An exploratory well is drilled for the purpose of identifying the

10

Geothermal Exploratory-Well Project: city of Alamosa, Colorado. Final report, September 1980-April 1983  

DOE Green Energy (OSTI)

The Geothermal Exploratory Well Project for the City of Alamosa, Colorado is summarized. In September, 1980, the City of Alamosa made application to the US Department of Energy for a program which, in essence, provided for the Department of Energy to insure that the City would not risk more than 10% of the total cost in the well if the well was a failure. If the well was a complete success, such as 650 gpm and 230/sup 0/F temperature, the City was responsible for 80% of the costs for drilling the well and there would be no further obligation from the Department of Energy. The well was drilled in November and early December, 1981, and remedial work was done in May and June 1982. The total drilled depth was 7118 ft. The well was cased to 4182 ft., with a slotted liner to 6084 ft. The maximum down hole temperature recorded was 190/sup 0/F at 6294 ft. Testing immediately following the remedial work indicated the well had virtually no potential to produce water.

Phetteplace, D.R.; Kunze, J.F.

1983-01-01T23:59:59.000Z

11

Raft River Geothermal Exploratory Hole No. 3  

DOE Green Energy (OSTI)

Raft River Geothermal Exploratory Hole No. 3 (RRGE-3) is an exploratory hole with three directional legs, drilled to depths ranging from approximately 5,500 to 6,000 feet into intruded quartz monzonite basement rock of the Raft River valley of southeastern Idaho. The goal of the Raft River Geothermal R and D program is to determine the feasibility of developing and utilizing medium temperature (300/sup 0/F) geothermal resources for power generation and nonelectrical applications. This well was drilled to provide data to further investigate and evaluate the geothermal reservoir, as well as to optimize the location of possible future resource and/or injection wells and to develop methods to reduce the cost of geothermal wells. The drilling and completion of RRGE-3 is described and the daily drilling reports, drill bit records, descriptions of the casing, cementing, logging and coring programs, and the containment techniques employed on RRGE-3 are included.

Shoopman, H.H. (comp.)

1977-06-01T23:59:59.000Z

12

Geothermal well stimulation treatments  

DOE Green Energy (OSTI)

The behavior of proppants in geothermal environments and two field experiments in well stimulation are discussed. (MHR)

Hanold, R.J.

1980-01-01T23:59:59.000Z

13

Definition: Exploratory Well | Open Energy Information  

Open Energy Info (EERE)

Definition Edit with form History Facebook icon Twitter icon Definition: Exploratory Well Jump to: navigation, search Dictionary.png Exploratory Well An exploratory well is...

14

COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion...  

Open Energy Info (EERE)

COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report. (Coso Hot Springs KGRA) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: COSO Geothermal...

15

Geothermal Well Technology Program  

DOE Green Energy (OSTI)

The high cost of drilling and completing geothermal wells is an impediment to the development of geothermal energy resources. Technological deficiencies in rotary drilling techniques are evidenced when drilling geothermal wells. The Division of Geothermal Energy (DGE) of the U.S. Department of Energy has initiated a program aimed at developing new drilling and completion techniques for geothermal wells. The goals of this program are to reduce well costs by 25% by 1982 and by 50% by 1986. An overview of the program is presented. Program justification which relates well cost to busbar energy cost and to DGE power-on-line goals is presented. Technological deficiencies encountered when current rotary drilling techniques are used for geothermal wells are discussed. A program for correcting these deficiencies is described.

Varnado, S.G.

1978-01-01T23:59:59.000Z

16

Evaluation of Coso Geothermal Exploratory Hole No. 1 (CGEH-1...  

Open Energy Info (EERE)

Evaluation of Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Coso Hot Springs: KGRA, China Lake, CA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference...

17

Raft River Geothermal Exploratory Hole No. 1 (RRGE-1). Completion report |  

Open Energy Info (EERE)

Exploratory Hole No. 1 (RRGE-1). Completion report Exploratory Hole No. 1 (RRGE-1). Completion report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Raft River Geothermal Exploratory Hole No. 1 (RRGE-1). Completion report Details Activities (1) Areas (1) Regions (0) Abstract: GEOTHERMAL ENERGY; BOREHOLES; WELL DRILLING; GEOTHERMAL EXPLORATION; GEOTHERMAL WELLS; IDAHO; EQUIPMENT; GEOLOGICAL SURVEYS; WELL CASINGS; WELL LOGGING; CAVITIES; DRILLING; EXPLORATION; NORTH AMERICA; PACIFIC NORTHWEST REGION; USA; WELLS Author(s): Reynolds Electrical and Engineering Co., Inc., Las Vegas, Nev. (USA) Published: DOE Information Bridge, 10/1/1975 Document Number: Unavailable DOI: 10.2172/5091938 Source: View Original Report Exploratory Well At Raft River Geothermal Area (1975) Raft River Geothermal Area Retrieved from

18

Geothermal well stimulation  

DOE Green Energy (OSTI)

All available data on proppants and fluids were examined to determine areas in technology that need development for 300 to 500/sup 0/F (150/sup 0/ to 265/sup 0/C) hydrothermal wells. While fluid properties have been examined well into the 450/sup 0/F range, proppants have not been previously tested at elevated temperatures except in a few instances. The latest test data at geothermal temperatures is presented and some possible proppants and fluid systems that can be used are shown. Also discussed are alternative stimulation techniques for geothermal wells.

Sinclair, A.R.; Pittard, F.J.; Hanold, R.J.

1980-01-01T23:59:59.000Z

19

Testing operations plan: Coso Geothermal Exploratory Hole No. 1 (CGEH-1) |  

Open Energy Info (EERE)

operations plan: Coso Geothermal Exploratory Hole No. 1 (CGEH-1) operations plan: Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Testing operations plan: Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Details Activities (1) Areas (1) Regions (0) Abstract: Coso Geothermal Exploratory Hole No. 1 (CGEH-1) was drilled to investigate the potential of the Coso Hot Springs Known Geothermal Resource Area (KGRA) in southeastern California. Detailed background information is contained in the drilling plan, Coso Geothermal Exploratory Hole No. 1 (CGEH-1), NVO-184, dated June 1977. The purpose of this supplement to NVO-184 is to establish a plan of operations for testing the resource after completion of well drilling activities. Major elements of this plan include

20

Evaluation of Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Coso Hot  

Open Energy Info (EERE)

Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Coso Hot Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Coso Hot Springs: KGRA, China Lake, CA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Evaluation of Coso Geothermal Exploratory Hole No. 1 (CGEH-1) Coso Hot Springs: KGRA, China Lake, CA Details Activities (1) Areas (1) Regions (0) Abstract: The well, Coso Geothermal Exploratory Hole No. 1 (CGEH-1) was drilled at the China Lake Naval Weapons Center. Drilling was started on 2 September 1977, and the well completed on 1 December 1977 to 4845 ft. The well is an exploratory hole to determine geological and hydrothermal characteristics of the Coso Hot Springs KGRA (Known Geothermal Resource Area). During drilling, numerous geophysical and temperature surveys were performed to evaluate the geological characteristics of CGEH-1. LBL

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Geothermal Well Stimulation  

DOE Green Energy (OSTI)

The stimulation of geothermal wells presents some new and challenging problems. Formation temperatures in the 300-600 F range can be expected. The behavior of stimulation fluids, frac proppants, and equipment at these temperatures in a hostile brine environment must be carefully evaluated before performance expectations can be determined. In order to avoid possible damage to the producing horizon of the formation, high temperature chemical compatibility between the in situ materials and the stimulation materials must be verified. Perhaps most significant of all, in geothermal wells the required techniques must be capable of bringing about the production of very large amounts of fluid. This necessity for high flow rates represents a significant departure from conventional petroleum well stimulation and demands the creation of very high near-wellbore permeability and/or fractures with very high flow conductivity.

Campbell, D. A.; Morris, C. W.; Sinclair, A. R.; Hanold, R. J.; Vetter, O. J.

1981-03-01T23:59:59.000Z

22

Exploratory Well At Salt Wells Area (Edmiston & Benoit, 1984) | Open Energy  

Open Energy Info (EERE)

Edmiston & Benoit, 1984) Edmiston & Benoit, 1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Salt Wells Area (Edmiston & Benoit, 1984) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Exploratory Well Activity Date 1980 - 1980 Usefulness useful DOE-funding Unknown Exploration Basis The blind Salt Wells geothermal system was first identified when Anadarko Petroleum Corporation drilled slim hole and geothermal exploration wells at the site in 1980. Two reports detail the results of this drilling activity. This paper seeks to (1) describe several moderate-temperature (150-200°C) geothermal systems discovered and drilled during the early 1980s that had not been documented previously in the literature, (2) summarize and compare

23

Exploratory Well At Salt Wells Area (Bureau of Land Management, 2009) |  

Open Energy Info (EERE)

Exploratory Well At Salt Wells Area (Bureau of Land Management, 2009) Exploratory Well At Salt Wells Area (Bureau of Land Management, 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Exploratory Well At Salt Wells Area (Bureau of Land Management, 2009) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Exploratory Well Activity Date 2008 - 2008 Usefulness not indicated DOE-funding Unknown Exploration Basis Vulcan increased exploration efforts in the summer and fall of 2008, during which time the company drilled two temperature gradient holes (86-15 O on Pad 1 and 17-16 O on Pad 3); conducted seismic, gravity and magnetotelluric surveys; and drilled deep exploration wells at Pads 6 and 8 and binary wells at Pads 1, 2, 4, and 7. Notes Data from these wells is proprietary, and so were unavailable for inclusion

24

Well descriptions for geothermal drilling  

DOE Green Energy (OSTI)

Generic well models have been constructed for eight major geothermal resource areas. The models define representative times and costs associated with the individual operations that can be expected during drilling and completion of geothermal wells. They were made for and have been used to evaluate the impacts of potential new technologies. Their nature, their construction, and their validation are discussed.

Carson, C.C.; Livesay, B.J.

1981-01-01T23:59:59.000Z

25

Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion report |  

Open Energy Info (EERE)

Hole No. 2, RRGE-2. Completion report Hole No. 2, RRGE-2. Completion report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion report Details Activities (1) Areas (1) Regions (0) Abstract: The Raft River Geothermal Exploratory Hole No. 2 (RRGE-2) is the second exploratory hole drilled in the Raft River Valley location of the Idaho Geothermal R and D Project for the purpose of determining the existence of hot water in quantities suitable for commercial power generation and nonelectric applications. This well was drilled to a depth of 6,543 feet below ground level to obtain additional geological information for evaluation of the deep geothermal reservoir system. The drilling and completion of RRGE-2 are described. The daily drilling

26

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM  

Open Energy Info (EERE)

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM RESERVOIR DEVELOPMENT Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM RESERVOIR DEVELOPMENT Details Activities (1) Areas (1) Regions (0) Abstract: Thermal stimulation can be utilized to precondition a well to optimize fracturing and production during Enhanced Geothermal System (EGS) reservoir development. A finite element model was developed for the fully coupled processes consisting of: thermoporoelastic deformation, hydraulic conduction, thermal osmosis, heat conduction, pressure thermal effect, and the interconvertibility of mechanical and thermal energy. The model has

27

Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion report  

DOE Green Energy (OSTI)

The Raft River Geothermal Exploratory Hole No. 2 (RRGE-2) is the second exploratory hole drilled in the Raft River Valley location of the Idaho Geothermal R and D Project for the purpose of determining the existence of hot water in quantities suitable for commercial power generation and nonelectric applications. This well was drilled to a depth of 6,543 feet below ground level to obtain additional geological information for evaluation of the deep geothermal reservoir system. The drilling and completion of RRGE-2 are described. The daily drilling reports, drill bit records, casing records, and descriptions of the cementing, logging, coring and containment techniques employed during the drilling operation are included.

Speake, J.L. (comp.)

1976-08-01T23:59:59.000Z

28

Geothermal/Well Field | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Geothermal/Well Field < Geothermal(Redirected from Well Field) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (45) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques

29

Process for cementing geothermal wells  

DOE Patents (OSTI)

A pumpable slurry of coal-filled furfuryl alcohol, furfural, and/or a low molecular weight mono- or copolymer thereof containing, preferably, a catalytic amount of a soluble acid catalyst is used to cement a casing in a geothermal well.

Eilers, Louis H. (Inola, OK)

1985-01-01T23:59:59.000Z

30

Geothermal well stimulation program: opening remarks  

SciTech Connect

The history of well stimulation and the development of the geothermal well stimulation program are reviewed briefly. (MHR)

Hanold, R.J.

1980-01-01T23:59:59.000Z

31

ADVANCED CEMENTS FOR GEOTHERMAL WELLS  

Science Conference Proceedings (OSTI)

Using the conventional well cements consisting of the calcium silicate hydrates (CaO-SiO{sub 2}-H{sub 2}O system) and calcium aluminum silicate hydrates (CaO-Al{sub 2}O{sub 3}-SiO{sub 2}-H{sub 2}O system) for the integrity of geothermal wells, the serious concern confronting the cementing industries was their poor performance in mechanically supporting the metallic well casing pipes and in mitigating the pipe's corrosion in very harsh geothermal reservoirs. These difficulties are particularly acute in two geological regions: One is the deep hot downhole area ({approx} 1700 m depth at temperatures of {approx} 320 C) that contains hyper saline water with high concentrations of CO{sub 2} (> 40,000 ppm) in conjunction with {approx} 100 ppm H{sub 2}S at a mild acid of pH {approx} 5.0; the other is the upper well region between the well's surface and {approx} 1000 m depth at temperatures up to 200 C. The specific environment of the latter region is characterized by highly concentrated H{sub 2}SO{sub 4} (pH strength of cements, lowering the mechanical support of casing pipes, but also increased the extent of permeability of the brine through the cement layer, promoting the rate of the pipe's corrosion. Severely carbonated and acid eroded cements often impaired the integrity of a well in less than one year; in the worst cases, casings have collapsed within three months, leading to the need for costly and time-consuming repairs or redrilling operations. These were the reasons why the geothermal well drilling and cementing industries were concerned about using conventional well cements, and further their deterioration was a major impediment in expediting the development of geothermal energy resources.

SUGAMA,T.

2007-01-01T23:59:59.000Z

32

Geothermal/Well Field | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Well Field Geothermal/Well Field < Geothermal Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (42) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques There are many different techniques that are utilized in geothermal well field development and reservoir maintenance depending on the region's geology, economic considerations, project maturity, and other considerations such as land access and permitting requirements. Well field

33

Geothermal-well design handbook  

DOE Green Energy (OSTI)

A simplified process is presented for estimating the performance of geothermal wells which are produced by natural, flashing flows. The well diameter and depth, and reservoir conditions must be known; then it is possible to determine the total pressure drop in a flowing well, and therefore to find the fluid pressure, temperature, and steam quality at the wellhead. By applying the handbook process to several input data sets, the user can compile sufficient information to determine the interdependence of input and output parameters. (MHR)

Not Available

1982-02-01T23:59:59.000Z

34

Drilling and operating geothermal wells in California  

SciTech Connect

The following procedural points for geothermal well drilling and operation are presented: geothermal operators, definitions, geothermal unit, agent, notice of intention, fees, report on proposed operations, bonds, well name and number, well and property sale on transfer, well records, and other agencies. (MHR)

1979-01-01T23:59:59.000Z

35

ADVANCED CEMENTS FOR GEOTHERMAL WELLS  

DOE Green Energy (OSTI)

Using the conventional well cements consisting of the calcium silicate hydrates (CaO-SiO{sub 2}-H{sub 2}O system) and calcium aluminum silicate hydrates (CaO-Al{sub 2}O{sub 3}-SiO{sub 2}-H{sub 2}O system) for the integrity of geothermal wells, the serious concern confronting the cementing industries was their poor performance in mechanically supporting the metallic well casing pipes and in mitigating the pipe's corrosion in very harsh geothermal reservoirs. These difficulties are particularly acute in two geological regions: One is the deep hot downhole area ({approx} 1700 m depth at temperatures of {approx} 320 C) that contains hyper saline water with high concentrations of CO{sub 2} (> 40,000 ppm) in conjunction with {approx} 100 ppm H{sub 2}S at a mild acid of pH {approx} 5.0; the other is the upper well region between the well's surface and {approx} 1000 m depth at temperatures up to 200 C. The specific environment of the latter region is characterized by highly concentrated H{sub 2}SO{sub 4} (pH < 1.5) brine containing at least 5000 ppm CO{sub 2}. When these conventional cements are emplaced in these harsh environments, their major shortcoming is their susceptibility to reactions with hot CO{sub 2} and H{sub 2}SO4, thereby causing their deterioration brought about by CO{sub 2}-catalyzed carbonation and acid-initiated erosion. Such degradation not only reduced rapidly the strength of cements, lowering the mechanical support of casing pipes, but also increased the extent of permeability of the brine through the cement layer, promoting the rate of the pipe's corrosion. Severely carbonated and acid eroded cements often impaired the integrity of a well in less than one year; in the worst cases, casings have collapsed within three months, leading to the need for costly and time-consuming repairs or redrilling operations. These were the reasons why the geothermal well drilling and cementing industries were concerned about using conventional well cements, and further their deterioration was a major impediment in expediting the development of geothermal energy resources.

SUGAMA,T.

2007-01-01T23:59:59.000Z

36

Improved geothermal well logging tools  

DOE Green Energy (OSTI)

A geothermal well logging tool has been designed to operate at 275/sup 0/C and 7000 psi. The logging tool will initially consist of a manometer, a gradiomanometer and a thermometer; the electrical and mechanical design is such that a flowmeter and a caliper can be added as a later development. A unique feature of the logging tool is that it contains no downhole active electronics. The manometer is a standard high temperature pressure gauge. The gradiomanometer consists of a differential pressure gauge which is coupled to ports separated vertically by 2 ft. The differential pressure gauge is a new development; it is designed to measure a differential pressure up to 2 psi at a line pressure of 10,000 psi. The thermometer is a platinum resistance thermometer previously developed for oil well logging. The pressure gauges are both strain gauge types which allows all three gauges are both strain gauge types which allows all three gauges to be connected in series and driven from a constant current supply. This arrangement makes it possible to use a standard seven-conductor cable with no downhole switching. The joints in the sonde are electron beam welded, thus eliminating any sealed joints in the sonde wall. The logging tool will be tested first in an autoclave and in a geothermal well later in the program.

Kratz, H.R.

1977-06-01T23:59:59.000Z

37

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area (Redirected from Salt Wells Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

38

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

39

Geothermal energy well casing seal  

SciTech Connect

A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water. The super-heated steam is then used for operating a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop steam generator-turbine-alternator combination for the beneficial generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water regenerated at the surface-located system is returned to the deep well pumping system also for lubrication of a fluid bearing arrangement supporting the turbine-driven pump system. The deep well pump system is supported within the well casing pipe from the earth's surface by the turbine exhaust steam conduit. In view of differential expansion effects on the relative lengths of the casing pipe and the exhaust steam conduit, a novel flexible seal is provided between the suspended turbine-pump system and the well pipe casing. 9 claims, 2 drawing figures.

Matthews, H.B.

1976-07-06T23:59:59.000Z

40

Chemical logging of geothermal wells  

DOE Patents (OSTI)

The presence of geothermal aquifers can be detected while drilling in geothermal formations by maintaining a chemical log of the ratio of the concentrations of calcium to carbonate and bicarbonate ions in the return drilling fluid. A continuous increase in the ratio of the concentrations of calcium to carbonate and bicarbonate ions is indicative of the existence of a warm or hot geothermal aquifer at some increased depth.

Allen, Charles A. (Idaho Falls, ID); McAtee, Richard E. (Idaho Falls, ID)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report.  

Open Energy Info (EERE)

COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report. COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report. (Coso Hot Springs KGRA) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report. (Coso Hot Springs KGRA) Details Activities (1) Areas (1) Regions (0) Abstract: Coso Geothermal Exploratory Hole No. 1 (CGEH No. 1) is the first deep exploratory hole drilled in the Coso Hot Springs area of Southeastern California. CGEH No. 1 was drilled to a depth of 4,845 ft in the central area of a large thermal anomaly and was a continuation of investigative work in that locale to determine the existence of a geothermal resource. The drilling and completion of CGEH No. 1 is described. Also included are the daily drilling reports, drill bit records, descriptions of the casing,

42

Maazama Well Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Maazama Well Geothermal Area Maazama Well Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Maazama Well Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.8965,"lon":-121.9865,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

43

Willow Well Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Well Geothermal Area Well Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Willow Well Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":61.6417,"lon":-150.095,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

44

Geothermal well log interpretation midterm report  

DOE Green Energy (OSTI)

Reservoir types are defined according to fluid phase and temperature, lithology, geologic province, pore geometry, and salinity and fluid chemistry. Improvements are needed in lithology and porosity definition, fracture detection, and thermal evaluation for more accurate interpretation. Further efforts are directed toward improving diagnostic techniques for relating rock characteristics and log response, developing petrophysical models for geothermal systems, and developing thermal evaluation techniques. The Geothermal Well Log Interpretation study and report has concentrated only on hydrothermal geothermal reservoirs. Other geothermal reservoirs (hot dry rock, geopressured, etc.) are not considered.

Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

1979-02-01T23:59:59.000Z

45

Pumpernickel Valley Geothermal Project Thermal Gradient Wells  

DOE Green Energy (OSTI)

The Pumpernickel Valley geothermal project area is located near the eastern edge of the Sonoma Range and is positioned within the structurally complex Winnemucca fold and thrust belt of north-central Nevada. A series of approximately north-northeast-striking faults related to the Basin and Range tectonics are superimposed on the earlier structures within the project area, and are responsible for the final overall geometry and distribution of the pre-existing structural features on the property. Two of these faults, the Pumpernickel Valley fault and Edna Mountain fault, are range-bounding and display numerous characteristics typical of strike-slip fault systems. These characteristics, when combined with geophysical data from Shore (2005), indicate the presence of a pull-apart basin, formed within the releasing bend of the Pumpernickel Valley Edna Mountain fault system. A substantial body of evidence exists, in the form of available geothermal, geological and geophysical information, to suggest that the property and the pull-apart basin host a structurally controlled, extensive geothermal field. The most evident manifestations of the geothermal activity in the valley are two areas with hot springs, seepages, and wet ground/vegetation anomalies near the Pumpernickel Valley fault, which indicate that the fault focuses the fluid up-flow. There has not been any geothermal production from the Pumpernickel Valley area, but it was the focus of a limited exploration effort by Magma Power Company. In 1974, the company drilled one exploration/temperature gradient borehole east of the Pumpernickel Valley fault and recorded a thermal gradient of 160oC/km. The 1982 temperature data from five unrelated mineral exploration holes to the north of the Magma well indicated geothermal gradients in a range from 66 to 249oC/km for wells west of the fault, and ~283oC/km in a well next to the fault. In 2005, Nevada Geothermal Power Company drilled four geothermal gradient wells, PVTG-1, -2, -3, and -4, and all four encountered geothermal fluids. The holes provided valuable water geochemistry, supporting the geothermometry results obtained from the hot springs and Magma well. The temperature data gathered from all the wells clearly indicates the presence of a major plume of thermal water centered on the Pumpernickel Valley fault, and suggests that the main plume is controlled, at least in part, by flow from this fault system. The temperature data also defines the geothermal resource with gradients >100oC/km, which covers an area a minimum of 8 km2. Structural blocks, down dropped with respect to the Pumpernickel Valley fault, may define an immediate reservoir. The geothermal system almost certainly continues beyond the recently drilled holes and might be open to the east and south, whereas the heat source responsible for the temperatures associated with this plume has not been intersected and must be at a depth greater than 920 meters (depth of the deepest well Magma well). The geological and structural setting and other characteristics of the Pumpernickel Valley geothermal project area are markedly similar to the portions of the nearby Dixie Valley geothermal field. These similarities include, among others, the numerous, unexposed en echelon faults and large-scale pull-apart structure, which in Dixie Valley may host part of the geothermal field. The Pumpernickel Valley project area, for the majority of which Nevada Geothermal Power Company has geothermal rights, represents a geothermal site with a potential for the discovery of a relatively high temperature reservoir suitable for electric power production. Among locations not previously identified as having high geothermal potential, Pumpernickel Valley has been ranked as one of four sites with the highest potential for electrical power production in Nevada (Shevenell and Garside, 2003). Richards and Blackwell (2002) estimated the total heat loss and the preliminary production capacity for the entire Pumpernickel Valley geothermal system to be at 35MW. A more conservative estimate, for

Z. Adam Szybinski

2006-01-01T23:59:59.000Z

46

Salt Wells Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Project Salt Wells Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Salt Wells Geothermal Project Project Location Information Coordinates 39.580833333333°, -118.33444444444° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.580833333333,"lon":-118.33444444444,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

47

EVALUATION OF COSO GEOTHERMAL EXPLORATORY HOLE NO. 1 CGEH-1 COSO HOT SPRINGS: KGRA, CHINA LAKE, CA.  

E-Print Network (OSTI)

v. 10, no.3, p.144. Cos0 Geothermal Exploratory Hole No. 1,Combs, J. February 1975, Geothermal exploration techniques:Leonard, G.W. , 1971, Geothermal science and technology--a

Goranson, C.

2012-01-01T23:59:59.000Z

48

Geothermal Reservoir Well Stimulation Program: technology transfer  

DOE Green Energy (OSTI)

A literature search on reservoir and/or well stimulation techniques suitable for application in geothermal fields is presented. The literature on stimulation techniques in oil and gas field applications was also searched and evaluated as to its relevancy to geothermal operations. The equivalent low-temperature work documented in the open literature is cited, and an attempt is made to evaluate the relevance of this information as far as high-temperature stimulation work is concerned. Clays play an important role in any stimulation work. Therefore, special emphasis has been placed on clay behavior anticipated in geothermal operations. (MHR)

Not Available

1980-05-01T23:59:59.000Z

49

Development Wells At Coso Geothermal Area (1985) | Open Energy...  

Open Energy Info (EERE)

Development Wells At Coso Geothermal Area (1985) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Development Wells Activity Date 1985 Usefulness...

50

Lost Circulation Experience in Geothermal Wells  

DOE Green Energy (OSTI)

Lost circulation during drilling and cementing in geothermal wells is a problem common to most geothermal areas. Material and rig time costs due to lost circulation often represent one fourth or more of the total well cost. Assessment of the general drilling and completion practices commonly used for handling lost circulation have been surveyed and evaluated under a study sponsored by Sandia National Laboratories. Results of this study, including interviews with geothermal production companies and with drilling fluid service companies, are reported in the paper. Conclusions and recommendations are presented for control of lost circulation during geothermal operations. Recent improvements in lost circulation materials and techniques and potential equipment solutions to the lost circulation problem are discussed. Research needs are also identified.

Goodman, M. A.

1981-01-01T23:59:59.000Z

51

EA for Well Field Development at Patua Geothermal Area -  

Open Energy Info (EERE)

for Well Field Development at Patua Geothermal Area - for Well Field Development at Patua Geothermal Area - DOI-BLM-NV-C010-2011-00016-EA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home NEPA Document Collection for: EA for Well Field Development at Patua Geothermal Area - DOI-BLM-NV-C010-2011-00016-EA EA at Patua Geothermal Area for Geothermal/Exploration, Geothermal/Well Field, Patua Geothermal Project Phase II General NEPA Document Info Energy Sector Geothermal energy Environmental Analysis Type EA Applicant Gradient Resources Geothermal Area Patua Geothermal Area Project Location Fernley, Nevada Project Phase Geothermal/Exploration, Geothermal/Well Field Techniques Drilling Techniques, Thermal Gradient Holes Time Frame (days) NEPA Process Time 327 Participating Agencies Lead Agency BLM Funding Agency none provided

52

Geothermal Well Completion Tests | Open Energy Information  

Open Energy Info (EERE)

Geothermal Well Completion Tests Geothermal Well Completion Tests Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Well Completion Tests Abstract This paper reviews the measurements that are typically made in a well immediately after drilling is completed - the Completion Tests. The objective of these tests is to determine the properties of the reservoir, and of the reservoir fluid near the well. A significant amount of information that will add to the characterisation of the reservoir and the well, can only be obtained in the period during and immediately after drilling activities are completed. Author Hagen Hole Conference Petroleum Engineering Summer School; Dubrovnik, Croatia; 2008/06/09 Published N/A, 2008 DOI Not Provided Check for DOI availability: http://crossref.org

53

Geopressured-geothermal well activities in Louisiana  

DOE Green Energy (OSTI)

Since September 1978, microseismic networks have operated continuously around US Department of Energy (DOE) geopressured-geothermal well sites to monitor any microearthquake activity in the well vicinity. Microseismic monitoring is necessary before flow testing at a well site to establish the level of local background seismicity. Once flow testing has begun, well development may affect ground elevations and/or may activate growth faults, which are characteristic of the coastal region of southern Louisiana and southeastern Texas where these geopressured-geothermal wells are located. The microseismic networks are designed to detest small-scale local earthquakes indicative of such fault activation. Even after flow testing has ceased, monitoring continues to assess any microearthquake activity delayed by the time dependence of stress migration within the earth. Current monitoring shows no microseismicity in the geopressured-geothermal prospect areas before, during, or after flow testing.

John, C.J.

1992-10-01T23:59:59.000Z

54

Raft River well stimulation experiments: geothermal reservoir well stimulation program  

DOE Green Energy (OSTI)

The Geothermal Reservoir Well Stimulation Program (GRWSP) performed two field experiments at the Raft River KGRA in 1979. Wells RRGP-4 and RRGP-5 were selected for the hydraulic fracture stimulation treatments. The well selection process, fracture treatment design, field execution, stimulation results, and pre- and post-job evaluations are presented.

Not Available

1980-08-01T23:59:59.000Z

55

Geothermal Reservoir Well Stimulation Program: technology transfer  

DOE Green Energy (OSTI)

To assess the stimulation technology developed in the oil and gas industry as to its applicability to the problems of geothermal well stimulation, a literature search was performed through on-line computer systems. Also, field records of well stimulation programs that have worked successfully were obtained from oil and gas operators and service companies. The results of these surveys are presented. (MHR)

Not Available

1980-05-01T23:59:59.000Z

56

Geothermal Reservoir Well Stimulation Program: technology transfer  

Science Conference Proceedings (OSTI)

Each of the following types of well stimulation techniques are summarized and explained: hydraulic fracturing; thermal; mechanical, jetting, and drainhole drilling; explosive and implosive; and injection methods. Current stimulation techniques, stimulation techniques for geothermal wells, areas of needed investigation, and engineering calculations for various techniques. (MHR)

Not Available

1980-05-01T23:59:59.000Z

57

Boise geothermal injection well: Final environmental assessment  

DOE Green Energy (OSTI)

The City of Boise, Idaho, an Idaho Municipal Corporation, is proposing to construct a well with which to inject spent geothermal water from its hot water heating system back into the geothermal aquifer. Because of a cooperative agreement between the City and the US Department of Energy to design and construct the proposed well, compliance to the National Environmental Policy Act (NEPA) is required. Therefore, this Environmental Assessment (EA) represents the analysis of the proposed project required under NEPA. The intent of this EA is to: (1) briefly describe historical uses of the Boise Geothermal Aquifer; (2) discuss the underlying reason for the proposed action; (3) describe alternatives considered, including the No Action Alternative and the Preferred Alternative; and (4) present potential environmental impacts of the proposed action and the analysis of those impacts as they apply to the respective alternatives.

NONE

1997-12-31T23:59:59.000Z

58

Geologic Results from the Long Valley Exploratory Well  

Science Conference Proceedings (OSTI)

As a deep well in the center of a major Quaternary caldera, the Long Valley Exploratory Well (LVEW) provides a new perspective on the relationship between hydrothermal circulation and a large crustal magma chamber. It also provides an important test of models for the subsurface structure of active continental calderas. Results will impact geothermal exploration, assessment, and management of the Long Valley resource and should be applicable to other igneous-related geothermal systems. Our task is to use the cuttings and core from LVEW to interpret the evolution of the central caldera region, with emphasis on evidence of current hydrothermal conditions and circulation. LVEW has reached a depth of 2313 m, passing through post-caldera extrusives and the intracaldera Bishop Tuff to bottom in the Mt. Morrison roof pendant of the Sierran basement. The base of the section of Quaternary volcanic rocks related to Long Valley Caldera was encountered at 1800 m of which 1178 m is Bishop Tuff. The lithologies sampled generally support the classic view of large intercontinental calderas as piston-cylinder-like structures. In this model, the roof of the huge magma chamber, like an ill-fitting piston, broke and sank 2 km along a ring fracture system that simultaneously and explosively leaked magma as Bishop Tuff. Results from LVEW which support this model are the presence of intact basement at depth at the center of the caldera, the presence of a thick Bishop Tuff section, and textural evidence that the tuff encountered is not near-vent despite its central caldera location. An unexpected observation was the presence of rhyolite intrusions within the tuff with a cumulative apparent thickness in excess of 300 m. Chemical analyses indicate that these are high-silica, high-barium rhyolites. Preliminary {sup 40}Ar/{sup 39}Ar analyses determined an age of 626 {+-} 38 ka (this paper). These observations would indicate that the intrusions belong to the early post-collapse episode of volcanism and are contemporaneous with resurgence of the caldera floor. If they are extensive sills rather than dikes, a possibility being investigated through relogging of core from neighboring wells, they were responsible for resurgence. A {sup 40}Ar/{sup 39}Ar age of 769 {+-} 14 ka from Bishop Tuff at 820 m depth conforms with tuff ages from outside the caldera and indicates an absence of shallow hydrothermal activity (>300 C) persisting after emplacement. Work is proceeding on investigating hydrothermal alteration deeper in the well. This alteration includes sulfide+quartz fracture fillings, calcite+quartz replacement of feldspars, and disseminated pyrite in both the tuff and basement. Electron microprobe analysis of phases are being conducted to determine initial magmatic and subsequent hydrothermal conditions.

McConnell, Vicki S.; Eichelberger, John C.; Keskinen, Mary J.; Layer, Paul W.

1992-03-24T23:59:59.000Z

59

Operations plan Coso geothermal exploratory hole No. 1 (CGEH-1) | Open  

Open Energy Info (EERE)

plan Coso geothermal exploratory hole No. 1 (CGEH-1) plan Coso geothermal exploratory hole No. 1 (CGEH-1) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Operations plan Coso geothermal exploratory hole No. 1 (CGEH-1) Details Activities (1) Areas (1) Regions (0) Abstract: An investigative program is described, involving the drilling and testing of an exploratory hole to a nominal depth of 4,000 feet with an option to drill to a depth of 6,000 feet. The following are covered: management and organizational concept; program elements--description, detailed drilling program; materials, services, and equipment provided by ERDA, NWC; site selection; site access and security; health and safety; permits and approvals; reporting; environmental impact; funding; schedule of activities; and public information. The license and reporting forms are

60

DOE Geothermal well stimulation program  

DOE Green Energy (OSTI)

An effective stimulation treatment requires the interaction of four separate items: frac fluids, proppants, equipment, and planned and properly engineered schedules. While there are good fluid systems and proppants, only judicious combinations and a well thought out schedule which uses all of these materials and available equipment to best advantage is an optimum stimulation treatment. Generally, high flow rates and convective cooling can be used either with conventional (planar) fracturing or with a dendritic fracturing technique. Many of todays fluid systems have been tested to above 400/sup 0/F. Some fluids have survived quite well. Current tests on proppants have shown temperature sensitivities in sand; however, there are resin coated materials and sintered bauxite which are not temperature sensitive. (MHR)

Hanold, R.J.; Campbell, D.A.; Sinclair, A.R.

1980-10-20T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Isotopic Constraints on the Chemical Evolution of Geothermal Fluids, Long Valley, CA  

E-Print Network (OSTI)

Energy Sciences and Office of Geothermal Technologies underconcentrations in Long Valley geothermal waters discriminateand wells from the geothermal field and a nearby exploratory

Brown, Shaun

2010-01-01T23:59:59.000Z

62

Well cost estimates in various geothermal regions  

DOE Green Energy (OSTI)

A project to estimate well costs in regions of current geothermal activity has been initiated. Costs associated with commonly encountered drilling problems will be included. Activity-based costing techniques will be employed to allow the identification of cost drivers and the evaluation of the economic effects of new technologies and operational procedures on well costs. The sensitivity of well costs to a number of parameters such as rate-of-penetration and daily operating costs will be examined. Additional sensitivity analyses and trade-off studies will evaluate the efficiency of various operational practices and preventive, as well as remedial, actions. These efforts should help provide an understanding of the consumption of resources in geothermal drilling.

Pierce, K.G.; Bomber, T.M. [Sandia National Labs., Albuquerque, NM (United States); Livesay, B.J. [Livesay Consultants, Encinitas, CA (United States)

1997-06-01T23:59:59.000Z

63

Development of geothermal-well-completion systems. Final report  

DOE Green Energy (OSTI)

Results of a three year study concerning the completion of geothermal wells, specifically cementing, are reported. The research involved some specific tasks: (1) determination of properties an adequate geothermal well cement must possess; (2) thorough evaluation of current high temperature oilwell cementing technology in a geothermal context; (3) basic research concerning the chemical and physical behavior of cements in a geothermal environment; (4) recommendation of specific cement systems suitable for use in a geothermal well.

Nelson, E.B.

1979-01-01T23:59:59.000Z

64

Well-test data from geothermal reservoirs  

DOE Green Energy (OSTI)

Extensive well testing in geothermal resources has been carried out throughout the western United States and in northern Mexico since 1975. Each resource tested and each well test conducted by LBL during the eight-year period are covered in brief. The information, collected from published reports and memoranda, includes test particulars, special instrumentation, data interpretation when available, and plots of actual data. Brief geologic and hydrologic descriptions of the geothermal resources are also presented. The format is such that well test descriptions are grouped, in the order performed, into major sections according to resource, each section containing a short resource description followed by individual test details. Additional information regarding instrumentation is provided. Source documentation is provided throughout to facilitate access to further information and raw data.

Bodvarsson, M.G.; Benson, S.M.

1982-09-01T23:59:59.000Z

65

Downhole Temperature Prediction for Drilling Geothermal Wells  

DOE Green Energy (OSTI)

Unusually high temperatures are encountered during drilling of a geothermal well. These temperatures affect every aspect of drilling, from drilling fluid properties to cement formulations. Clearly, good estimates of downhole temperatures during drilling would be helpful in preparing geothermal well completion designs, well drilling plans, drilling fluid requirements, and cement formulations. The thermal simulations in this report were conducted using GEOTEMP, a computer code developed under Sandia National Laboratories contract and available through Sandia. Input variables such as drilling fluid inlet temperatures and circulation rates, rates of penetration, and shut-in intervals were obtained from the Imperial Valley East Mesa Field and the Los Alamos Hot Dry Rock Project. The results of several thermal simulations are presented, with discussion of their impact on drilling fluids, cements, casing design, and drilling practices.

Mitchell, R. F.

1981-01-01T23:59:59.000Z

66

Geothermal Well Testing and Evaluation | Open Energy Information  

Open Energy Info (EERE)

Geothermal Well Testing and Evaluation Geothermal Well Testing and Evaluation Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Geothermal Well Testing and Evaluation Author Jon Ragnarsson Published Iceland Geosurvey, 2013 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Geothermal Well Testing and Evaluation Citation Jon Ragnarsson. Geothermal Well Testing and Evaluation [Internet]. 2013. Iceland Geosurvey. [cited 2013/10/18]. Available from: http://www.geothermal.is/geothermal-well-testing-and-evaluation Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Well_Testing_and_Evaluation&oldid=688939" Categories: References Geothermal References Uncited References What links here Related changes Special pages

67

Geothermal wells: a forecast of drilling activity  

DOE Green Energy (OSTI)

Numbers and problems for geothermal wells expected to be drilled in the United States between 1981 and 2000 AD are forecasted. The 3800 wells forecasted for major electric power projects (totaling 6 GWe of capacity) are categorized by type (production, etc.), and by location (The Geysers, etc.). 6000 wells are forecasted for direct heat projects (totaling 0.02 Quads per year). Equations are developed for forecasting the number of wells, and data is presented. Drilling and completion problems in The Geysers, The Imperial Valley, Roosevelt Hot Springs, the Valles Caldera, northern Nevada, Klamath Falls, Reno, Alaska, and Pagosa Springs are discussed. Likely areas for near term direct heat projects are identified.

Brown, G.L.; Mansure, A.J.; Miewald, J.N.

1981-07-01T23:59:59.000Z

68

Armored instrumentation cable for geothermal well logging  

DOE Green Energy (OSTI)

Multiconductor armored well-logging cable is used extensively by the oil and natural gas industry to lower various instruments used to measure the geological and geophysical parameters into deep wellbores. Advanced technology in oil-well drilling makes it possible to achieve borehole depths of 9 km (30,000 ft). The higher temperatures in these deeper boreholes demand advancements in the design and manufacturing of wireline cable and in the electrical insulating and armoring materials used as integral components. If geothermal energy is proved an abundant economic resource, drilling temperatures approaching and exceeding 300/sup 0/C will become commonplace. The adaptation of teflons as electrical insulating material permitted use of armored cable in geothermal wellbores where temperatures are slightly in excess of 200/sup 0/C, and where the concentrations of corrosive minerals and gases are high. Teflon materials presently used in wireline cables, however, are not capable of continuous operation at the anticipated higher temperatures.

Dennis, B.R.; Johnson, J.; Todd, B.

1981-01-01T23:59:59.000Z

69

Characteristics of geothermal wells located in the Salton Sea geothermal field, Imperial County, California  

DOE Green Energy (OSTI)

A summary is given of the geophysical, geochemical, and geothermal characteristics of wells located in the Salton Sea Geothermal Field. Based on the geothermal characteristics of the wells, a subsurface heat profile was developed for the entire geothermal field. Maps of temperature contours for specified depths throughout the field were also drawn.

Palmer, T.D.

1975-12-15T23:59:59.000Z

70

Geothermal well log interpretation state of the art. Final report  

DOE Green Energy (OSTI)

An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

1980-01-01T23:59:59.000Z

71

Ceramic vacuum tubes for geothermal well logging  

DOE Green Energy (OSTI)

The results of investigations carried out into the availability and suitability of ceramic vacuum tubes for the development of logging tools for geothermal wells are summarized. Design data acquired in the evaluation of ceramic vacuum tubes for the development of a 500/sup 0/C instrumentation amplifier are presented. The general requirements for ceramic vacuum tubes for application to the development of high temperature well logs are discussed. Commercially available tubes are described and future contract activities that specifically relate to ceramic vacuum tubes are detailed. Supplemental data is presented in the appendix. (MHR)

Kelly, R.D.

1977-01-12T23:59:59.000Z

72

Geothermal well log interpretation. Progress report  

DOE Green Energy (OSTI)

Progress is presented on the following tasks: review of the state-of-the-art, classification of geothermal reservoir types, data acquisition, problem definition and directions for solution, and refinement of existing interpretation techniques and development of new ones. Computerized literature searches were conducted. The classification system defines five major characteristics which will qualify a potential reservoir. A catalog lists well logs currently available for study. Rock and fluid parameters needed for reservoir studies are listed. A list of matrix characteristics for rocks and minerals is given. (MHR)

Not Available

1978-01-01T23:59:59.000Z

73

Crude Oil and Natural Gas Exploratory and Development Wells  

Gasoline and Diesel Fuel Update (EIA)

Exploratory and Development Wells Exploratory and Development Wells Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Data Series Jul-12 Aug-12 Sep-12 Oct-12 Nov-12 Dec-12 View History Wells Drilled (Number) Exploratory and Development NA NA NA NA NA NA 1973-2012 Crude Oil NA NA NA NA NA NA 1973-2012 Natural Gas NA NA NA NA NA NA 1973-2012 Dry Holes NA NA NA NA NA NA 1973-2012 Exploratory NA NA NA NA NA NA 1973-2012 Crude Oil NA NA NA NA NA NA 1973-2012 Natural Gas NA NA NA NA NA NA 1973-2012 Dry Holes NA NA NA NA NA NA 1973-2012 Development Wells Drilled NA NA NA NA NA NA 1973-2012 Crude Oil NA NA NA NA NA NA 1973-2012 Natural Gas NA NA NA NA NA NA 1973-2012

74

Crude Oil and Natural Gas Exploratory and Development Wells  

Gasoline and Diesel Fuel Update (EIA)

Wells Drilled (Number) Exploratory and Development NA NA NA NA NA NA 1973-2012 Crude Oil NA NA NA NA NA NA 1973-2012 Natural Gas NA NA NA NA NA NA 1973-2012 Dry Holes NA NA...

75

Geothermal Well Site Restoration and Plug and Abandonment of Wells  

DOE Green Energy (OSTI)

A report is presented on the final phase of an energy research program conducted by the U.S. Department of Energy (DOE) involving two geothermal well sites in the State of Louisiana-the Gladys McCall site and the Willis Hulin site. The research program was intended to improve geothermal technology and to determine the efficacy of producing electricity commercially from geopressured resource sites. The final phase of the program consisted of plug and abandonment (P&A) of the wells and restoration of the well sites. Restoration involved (a) initial soil and water sampling and analysis; (b) removal and disposal of well pads, concrete, utility poles, and trash; (c) plugging of monitor and freshwater wells; and (d) site leveling and general cleanup. Restoration of the McCall site required removal of naturally occurring radioactive material (NORM), which was costly and time-consuming. Exhibits are included that provide copies of work permits and authorizations, P&A reports and procedures, daily workover and current conditions report, and cost and salvage reports. Site locations, grid maps, and photographs are provided.

Rinehart, Ben N.

1994-08-01T23:59:59.000Z

76

Dead Horse Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Dead Horse Wells Geothermal Area Dead Horse Wells Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Dead Horse Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (6) 9 Exploration Activities (1) 10 References Area Overview Geothermal Area Profile Location: California Exploration Region: Walker-Lane Transition Zone Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

77

Logging, Testing and Monitoring Geothermal Wells | Open Energy Information  

Open Energy Info (EERE)

Logging, Testing and Monitoring Geothermal Wells Logging, Testing and Monitoring Geothermal Wells Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Logging, Testing and Monitoring Geothermal Wells Abstract Wells or boreholes are essential components in both geothermal research and utilization as they enable a drastic increase in geothermal energy production beyond natural out-flow as well as providing access deep into the systems, not otherwise possible. Wells also play a vital role in all geothermal reservoir physics (also called reservoir engineering) research, which would be particularly ineffec-tive without the access into geothermal systems provided by wells. During drilling the main reservoir physics research is performed through logging of different parameters as functions

78

COSO Geothermal Exploratory Hole No. 1, CGEH No. 1. Completion report. [Coso Hot Springs KGRA  

DOE Green Energy (OSTI)

Coso Geothermal Exploratory Hole No. 1 (CGEH No. 1) is the first deep exploratory hole drilled in the Coso Hot Springs area of Southeastern California. CGEH No. 1 was drilled to a depth of 4,845 ft in the central area of a large thermal anomaly and was a continuation of investigative work in that locale to determine the existence of a geothermal resource. The drilling and completion of CGEH No. 1 is described. Also included are the daily drilling reports, drill bit records, descriptions of the casing, cementing, logging and coring program, and the containment equipment used during the drilling operation.

Not Available

1978-03-01T23:59:59.000Z

79

Development Wells At Raft River Geothermal Area (2004) | Open Energy  

Open Energy Info (EERE)

Development Wells At Raft River Geothermal Area (2004) Development Wells At Raft River Geothermal Area (2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Raft River Geothermal Area (2004) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Development Wells Activity Date 2004 Usefulness not indicated DOE-funding GRED II Notes Geothermal Resource Exploration and Definition Projects Raft River (GRED II): Re-assessment and testing of previously abandoned production wells. The objective of the U.S. Geothermal effort is to re-access the available wellbores, assess their condition, perform extensive testing of the reservoir to determine its productive capacity, and perform a resource utilization assessment. At the time of this paper, all five wells had been

80

ENEL Salt Wells Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

ENEL Salt Wells Geothermal Facility ENEL Salt Wells Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home ENEL Salt Wells Geothermal Facility General Information Name ENEL Salt Wells Geothermal Facility Facility Salt Wells Geothermal Facility Sector Geothermal energy Location Information Location Churchill, NV Coordinates 39.651603422063°, -118.49778413773° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.651603422063,"lon":-118.49778413773,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Explosive stimulation of a geothermal well: GEOFRAC  

DOE Green Energy (OSTI)

This paper describes the first known explosive stimulation successfully conducted in a geothermal well. Two tests were performed in a 2690-meter-(8826-ft.) deep Union Oil well at the Geysers field in Northern California in December 1981. The heat-resistant process, called GEOFRAC, uses a new unique, explosive HITEX 2, which is a nondetonable solid at room temperature. Upon melting at a temperature of 177[degrees]C (350[degrees]F), the HITEX 2 liquid becomes an explosive that can be safely heated to temperatures greater than 260[degrees]C (500[degrees]F). These unique properties of the explosive were exploited in the GEOFRAC process through the cooperative efforts of Physics International Company (PI), Rocket Research Company (RRC), Union oil Company (UO), and the university of California Los Alamos National Laboratories (LANL).

Mumma, D.M. (Physics International Co., San Leandro, CA (United States))

1982-07-01T23:59:59.000Z

82

Surface Indicators of Geothermal Activity at Salt Wells, Nevada, USA,  

Open Energy Info (EERE)

Surface Indicators of Geothermal Activity at Salt Wells, Nevada, USA, Surface Indicators of Geothermal Activity at Salt Wells, Nevada, USA, Including Warm Ground, Borate Deposits, and Siliceous Alteration Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Surface Indicators of Geothermal Activity at Salt Wells, Nevada, USA, Including Warm Ground, Borate Deposits, and Siliceous Alteration Abstract Surface indicators of geothermal activity are often present above blind or concealed geothermal systems in the Great Basin, but their expressions are sometimes subtle. When mapped in detail, these indicators yield valuable information on the location, structural controls, and potential subsurface reservoir temperatures of geothermal fluids. An example is provided by the Salt Wells geothermal system in Churchill County, Nevada, USA, where

83

Mt. Hood geothermal exploratory drilling and testing plan. Old Maid Flat holes No. 1 and No. 7A  

DOE Green Energy (OSTI)

This plan has been prepared to establish the objectives and set forth the procedures and guidelines for conducting geothermal exploratory drilling and testing operations in the Old Maid Flat area of Mt. Hood, Oregon, approximately 50 miles east of Portland. The project will be conducted on lands within the Mt. Hood National Forest, which are currently under Federal Lease OR 13994 to the Northwest Geothermal Corporation. The exploratory geothermal operations will consist of (1) testing an existing 4,000-foot temperature gradient hole to determine the quality of geothermal fluids, and (2) drilling and testing a new 5,000-foot hole to determine overall geothermal reservoir characteristics.

Not Available

1980-05-01T23:59:59.000Z

84

U.S. Average Depth of Dry Exploratory and Developmental Wells...  

Annual Energy Outlook 2012 (EIA)

Exploratory and Developmental Wells Drilled (Feet per Well) U.S. Average Depth of Dry Exploratory and Developmental Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3...

85

U.S. Average Depth of Dry Holes Exploratory Wells Drilled (Feet...  

Annual Energy Outlook 2012 (EIA)

Exploratory Wells Drilled (Feet per Well) U.S. Average Depth of Dry Holes Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7...

86

Success of Geothermal Wells: A Global Study | Open Energy Information  

Open Energy Info (EERE)

Success of Geothermal Wells: A Global Study Success of Geothermal Wells: A Global Study Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Success of Geothermal Wells: A Global Study Author International Finance Corporation Organization International Finance Corporation Published International Finance Corporation World Bank Group, 2013 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Success of Geothermal Wells: A Global Study Citation International Finance Corporation (International Finance Corporation). 2013. Success of Geothermal Wells: A Global Study. Washington, D.C.: International Finance Corporation World Bank Group. Retrieved from "http://en.openei.org/w/index.php?title=Success_of_Geothermal_Wells:_A_Global_Study&oldid=687100

87

Observation Wells At Mccoy Geothermal Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

Observation Wells At Mccoy Geothermal Area (DOE GTP) Observation Wells At Mccoy Geothermal Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Observation Wells At Mccoy Geothermal Area (DOE GTP) Exploration Activity Details Location Mccoy Geothermal Area Exploration Technique Observation Wells Activity Date Usefulness not indicated DOE-funding Unknown Notes 4 wells References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Observation_Wells_At_Mccoy_Geothermal_Area_(DOE_GTP)&oldid=402599" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services

88

Completion techniques for geothermal-geopressured wells. Final report  

DOE Green Energy (OSTI)

The following are covered: oil well completions, water well completions, sand control techniques, geopressured oil and gas wells, and geopressured water well completion. The conclusions for a geothermal-geopressured water well completion and needed research are included. (MHR)

Boyd, W.E.

1974-01-01T23:59:59.000Z

89

Monitoring well systems in geothermal areas  

DOE Green Energy (OSTI)

The ability to monitor the injection of spent geothermal fluids at reasonable cost might be greatly improved by use of multiple-completion techniques. Several such techniques, identified through contact with a broad range of experts from the groundwater and petroleum industries, are evaluated relative to application in the typical geologic and hydrologic conditions of the Basin and Range Province of the Western United States. Three basic monitor well designs are suggested for collection of pressure and temperature data: Single standpipe, multiple standpipe, and closed-system piezometers. A fourth design, monitor well/injection well dual completions, is determined to be inadvisable. Also, while it is recognized that water quality data is equally important, designs to allow water sampling greatly increase costs of construction, and so such designs are not included in this review. The single standpipe piezometer is recommended for use at depths less than 152 m (500 ft); several can be clustered in one area to provide information on vertical flow conditions. At depths greater than 152 m (500 ft), the multiple-completion standpipe and closed-system piezometers are likely to be more cost effective. Unique conditions at each monitor well site may necessitate consideration of the single standpipe piezometer even for deeper completions.

Lofgren, B.E.; O'Rourke, J.; Sterrett, R.; Thackston, J.; Fain, D.

1982-03-01T23:59:59.000Z

90

Drilling Operations Plan for the Magma Energy Exploratory Well  

DOE Green Energy (OSTI)

This paper is a summary of the proposed drilling plan for the first phase (to 2500 feet depth) of the Magma Energy Exploratory Well. The drilling program comprises four phases, spaced approximately one year apart, which culminate in a large-diameter well to a total depth near 20,000 feet. Included here are descriptions of the well design, predictions of potential drilling problems, a list of restrictions imposed by regulatory agencies, an outline of Sandia's management structure, and an explanation of how the magma energy technology will benefit from this drilling.

Finger, John T.; Livesay, Bill J.; Ash, Don

1989-03-21T23:59:59.000Z

91

CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to  

Open Energy Info (EERE)

CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to provide geothermal energy as a common utility for a new community college campus. Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title CNCC Craig Campus Geothermal Program: 82-well closed loop GHP well field to provide geothermal energy as a common utility for a new community college campus. Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description This "geothermal central plant" concept will provide ground source loop energy as a utility to be shared by the academic and residential buildings on the soon-to-be-constructed campus.

92

Surface Indicators of Geothermal Activity at Salt Wells, Nevada...  

Open Energy Info (EERE)

Surface Indicators of Geothermal Activity at Salt Wells, Nevada, USA, Including Warm Ground, Borate Deposits, and Siliceous Alteration Jump to: navigation, search OpenEI Reference...

93

Pagosa Springs Private Wells Space Heating Low Temperature Geothermal...  

Open Energy Info (EERE)

Page Edit with form History Facebook icon Twitter icon Pagosa Springs Private Wells Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Pagosa...

94

Geothermal: Sponsored by OSTI -- Chapter 6. Drilling and Well...  

Office of Scientific and Technical Information (OSTI)

Chapter 6. Drilling and Well Construction Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced...

95

Deep Geothermal Well and Power Plant Project Final Environmental...  

NLE Websites -- All DOE Office Websites (Extended Search)

Oregon Institute of Technology (OIT) Deep Geothermal Well and Power Plant Project Final Environmental Assessment September 2008 Prepared for: U.S. Department of Energy 1617 Cole...

96

Statistical Analysis of Geothermal Wells in the United States  

Science Conference Proceedings (OSTI)

This study represents the first attempt to characterize the U.S. geothermal-hydrothermal resource from well data. The report contains field test data on more than 500 geothermal wells and includes statistical analyses of key well parameters. Utilities can use the information in planning and engineering analysis.

1987-07-24T23:59:59.000Z

97

Representative well models for eight geothermal-resource areas  

DOE Green Energy (OSTI)

Representative well models have been constructed for eight major geothermal-resource areas. The models define representative times and costs associated with the individual operations that can be expected during drilling and completion of geothermal wells. The models were made for and have been used to evaluate the impacts of potential new technologies. The nature, construction, and validation of the models are presented.

Carson, C.C.; Lin, Y.T.; Livesay, B.J.

1983-02-01T23:59:59.000Z

98

Environmental Assessment of the Hawaii Geothermal Project Well Flow Test Program  

DOE Green Energy (OSTI)

The Hawaii Geothermal Project, a coordinated research effort of the University of Hawaii, funded by the County and State of Hawaii, and ERDA, was initiated in 1973 in an effort to identify, generate, and use geothermal energy on the Big Island of Hawaii. A number of stages are involved in developing geothermal power resources: exploration, test drilling, production testing, field development, power plant and powerline construction, and full-scale production. Phase I of the Project, which began in the summer of 1973, involved conducting exploratory surveys, developing analytical models for interpretation of geophysical results, conducting studies on energy recovery from hot brine, and examining the legal and economic implications of developing geothermal resources in the state. Phase II of the Project, initiated in the summer of 1975, centers on drilling an exploratory research well on the Island of Hawaii, but also continues operational support for the geophysical, engineering, and socioeconomic activities delineated above. The project to date is between the test drilling and production testing phase. The purpose of this assessment is to describe the activities and potential impacts associated with extensive well flow testing to be completed during Phase II.

None

1976-11-01T23:59:59.000Z

99

BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project |  

Open Energy Info (EERE)

BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project Abstract No abstract available. Author Bureau of Land Management Organization Bureau of Land Management, Carson City Field Office, Nevada Published U.S. Department of the Interior, 2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project Citation Bureau of Land Management (Bureau of Land Management, Carson City Field Office, Nevada). 2011. BLM Fact Sheet- Ormat Technologies Salt Wells Geothermal Energy Project. Carson City, Nevada: U.S. Department of the

100

Well Log Techniques At Coso Geothermal Area (1985) | Open Energy  

Open Energy Info (EERE)

Coso Geothermal Area (1985) Coso Geothermal Area (1985) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Well Log Techniques Activity Date 1985 Usefulness not indicated DOE-funding Unknown Exploration Basis Impact of long term testing on the well pressure Notes The downhole pressure monitoring equipment for each well included a stainless steel pressure chamber attached to a 0.25 inch stainless steel capillary tubing. The surface end of the capillary tubing was connected to a Paroscientific quartz pressure trandsducer. References Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.; Gentner, R. (20 January 1987) Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Coso_Geothermal_Area_(1985)&oldid=600462

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Evaluation of a geothermal well logging, DST and Pit test  

DOE Green Energy (OSTI)

This paper briefly discusses logging and testing operations and certain related physical aspects in geothermal well evaluations. A good understanding of thermal and hydrological characteristics of geothermal reservoirs are essential in geothermal well evaluations. Within geothermal reservoirs, in evaluating the wells, the two most important parameters that first could be estimated, then measured or calculated, are temperature and productivity. Well logs and wireline surveys are means of measuring formation temperatures. Drill Stem Tests (DST's) or Pit Tests are means of determining formation productivity. Geochemistry and Petrology are currently accepted as two evaluation yardsticks in geothermal well evaluations. investigations of cuttings and cores during drilling operations, along with studies on formation waters could be used in a predictive nature for temperature and productivity and could yield useful information on the resource.

Tansev, Erdal O.

1978-01-01T23:59:59.000Z

102

Pumpernickel Valley Geothermal Project Thermal Gradient Wells | Open Energy  

Open Energy Info (EERE)

Valley Geothermal Project Thermal Gradient Wells Valley Geothermal Project Thermal Gradient Wells Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Pumpernickel Valley Geothermal Project Thermal Gradient Wells Details Activities (4) Areas (1) Regions (0) Abstract: The Pumpernickel Valley geothermal project area is located near the eastern edge of the Sonoma Range and is positioned within the structurally complex Winnemucca fold and thrust belt of north-central Nevada. A series of approximately north-northeast-striking faults related to the Basin and Range tectonics are superimposed on the earlier structures within the project area, and are responsible for the final overall geometry and distribution of the pre-existing structural features on the property. Two of these faults, the Pumpernickel Valley fault and Edna Mountain fault,

103

Estimation of static formation temperatures in geothermal wells | Open  

Open Energy Info (EERE)

Estimation of static formation temperatures in geothermal wells Estimation of static formation temperatures in geothermal wells Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Estimation of static formation temperatures in geothermal wells Abstract Stabilized formation temperatures were estimated at different depths in 40 wells from the Los Humeros geothermal field, Mexico, using the Horner and the spherical radial flow (SRF) methods. The results showed that the Horner method underestimates formation temperatures, while the SRF method gives temperatures that are closer to the true formation temperatures. This was supported by numerical simulation of a combined circulation and shut-in period in several wells, and results for well H-26 are presented. Numerical reproduction of logged temperature is more feasible if an initial

104

Operations plan Coso geothermal exploratory hole No. 1 (CGEH-1)  

DOE Green Energy (OSTI)

An investigative program is described, involving the drilling and testing of an exploratory hole to a nominal depth of 4,000 feet with an option to drill to a depth of 6,000 feet. The following are covered: management and organizational concept; program elements--description, detailed drilling program; materials, services, and equipment provided by ERDA, NWC; site selection; site access and security; health and safety; permits and approvals; reporting; environmental impact; funding; schedule of activities; and public information. The license and reporting forms are included in the appendices. (MHR)

Not Available

1977-06-01T23:59:59.000Z

105

Completion report: Raft River Geothermal Production Well Five (RRGP-5)  

DOE Green Energy (OSTI)

The Raft River Geothermal Production Well Five (RRGP-5) is a production well in the Raft River KGRA (Known Geothermal Resource Area). The plan for this well included three barefoot legs. Due to technical and funding problems, two legs were drilled; only one leg is a producing leg. This report describes the entire drilling operation and includes daily drilling reports, drill bit records, casing records, and descriptions of cementing, logging, coring, and containment techniques.

Miller, L.G.; Prestwich, S.M.

1979-02-01T23:59:59.000Z

106

Salt Wells Geothermal Energy Projects Environmental Impact Statement | Open  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Salt Wells Geothermal Energy Projects Environmental Impact Statement Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Salt Wells Geothermal Energy Projects Environmental Impact Statement Abstract Abstract unavailable. Author Bureau of Land Management Published U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada, 07/22/2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Salt Wells Geothermal Energy Projects Environmental Impact Statement Citation Bureau of Land Management. Salt Wells Geothermal Energy Projects Environmental Impact Statement [Internet]. 07/22/2011. Carson City, NV. U.S. Department of the Interior- Bureau of Land Management, Carson City

107

Old Wright Well Greenhouse Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Wright Well Greenhouse Low Temperature Geothermal Facility Wright Well Greenhouse Low Temperature Geothermal Facility Jump to: navigation, search Name Old Wright Well Greenhouse Low Temperature Geothermal Facility Facility Old Wright Well Sector Geothermal energy Type Greenhouse Location Mount Princeton, Colorado Coordinates 38.749167°, -106.2425° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

108

Pagosa Springs Private Wells Space Heating Low Temperature Geothermal  

Open Energy Info (EERE)

Private Wells Space Heating Low Temperature Geothermal Private Wells Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Pagosa Springs Private Wells Space Heating Low Temperature Geothermal Facility Facility Pagosa Springs Private Wells Sector Geothermal energy Type Space Heating Location Pagosa Springs, Colorado Coordinates 37.26945°, -107.0097617° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

109

Countryman Well Greenhouse Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Countryman Well Greenhouse Low Temperature Geothermal Facility Countryman Well Greenhouse Low Temperature Geothermal Facility Jump to: navigation, search Name Countryman Well Greenhouse Low Temperature Geothermal Facility Facility Countryman Well Sector Geothermal energy Type Greenhouse Location Lander, Wyoming Coordinates 42.833014°, -108.7306725° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

110

U.S. Geothermal Announces Successful Completion of First Well...  

Open Energy Info (EERE)

Number NA DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for U.S. Geothermal Announces Successful Completion of First Well at Neal Hot...

111

Jackson Well Springs Space Heating Low Temperature Geothermal Facility |  

Open Energy Info (EERE)

Well Springs Space Heating Low Temperature Geothermal Facility Well Springs Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Jackson Well Springs Space Heating Low Temperature Geothermal Facility Facility Jackson Well Springs Sector Geothermal energy Type Space Heating Location Ashland, Oregon Coordinates 42.1853257°, -122.6980457° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

112

Integrated Geothermal Well Testing: Test Objectives and Facilities  

DOE Green Energy (OSTI)

A new and highly integrated geothermal well test program was designed for three geothermal operators in the US (MCR, RGI and Mapco Geothermal). This program required the design, construction and operation of new well test facilities. The main objectives of the test program and facilities are to investigate the critical potential and worst problems associated with the well and produced fluids in a period of approximately 30 days. Field and laboratory investigations are required to determine and quantify the problems of fluid production, utilization and reinjection. The facilities are designed to handle a flow rate from a geothermal well of one million pounds per hour at a wellhead temperature of approximately 268 C (515 F). The facilities will handle an entire spectrum of temperature and rate conditions up to these limits. All pertinent conditions for future fluid exploitations can be duplicated with these facilities, thus providing critical information at the very early stages of field development. The new well test facilities have been used to test high temperature, liquid-dominated geothermal wells in the Imperial Valley of California. The test facilities still have some problems which should be solvable. The accomplishments of this new and highly integrated geothermal well test program are described in this paper.

Nicholson, R. W.; Vetter, O. J.

1981-01-01T23:59:59.000Z

113

Polymer-cement geothermal-well-completion materials. Final report  

DOE Green Energy (OSTI)

A program to develop high-temperature polymer cements was performed. Several formulations based on organic and semi-inorganic binders were evaluated on the basis of mechanical and thermal stability, and thickening time. Two optimized systems exhibited properties exceeding those required for use in geothermal wells. Both systems were selected for continued evaluation at the National Bureau of Standards and contingent upon the results, for field testing in geothermal wells.

Zeldin, A.N.; Kukacka, L.E.

1980-07-01T23:59:59.000Z

114

Completion report: Raft River Geothermal Production Well Four (RRGP-4)  

DOE Green Energy (OSTI)

The fourth Raft River well was originally drilled to 866 m (2840 ft), for use as a test injection well. This well allowed the injection of geothermal fluids into the intermediate zone--above the geothermal production zone and below the shallow groundwater aquifers. After this testing, the well was deepened and cased for use as a production well. The well's designation was changed from RRGI-4 to RRGP-4. This report describes the drilling and completion of both drilling projects. Results of well tests are also included.

Miller, L.G.; Prestwich, S.M.

1979-02-01T23:59:59.000Z

115

Monitor well responses at the Raft River, Idaho, Geothermal Site  

DOE Green Energy (OSTI)

Effects of geothermal fluid production and injection on overlying ground-water aquifers have been studied at the Raft River Geothermal Site in southcentral Idaho. Data collected from 13 monitor wells indicate a complex fractured and porous media controlled ground-water flow system affected by natural recharge and discharge, irrigation withdrawal, and geothermal withdrawal and injection. The monitor wells are completed in aquifers and aquitards overlying the principal geothermal aquifers. Potentiometric heads and water quality are significantly affected by natural upward geothermal leakage via faults and matrix seepage. No significant change in water quality data has been observed, but potentiometric head changes resulted due to geothermal resource testing and utilization. Long-term hydrographs for the wells exhibit three distinct patterns, with superimposed responses due to geothermal pumping and injection. Well hydrographs typical of the Shallow aquifer exhibit effects of natural recharge and irrigation withdrawals. For selected wells, pressure declines due to injection and pressure buildup associated with pumping are observed. The latter effect is presumably due to the elastic deformation of geologic material overlying the stressed aquifers. A second distinct pattern occurs in two wells believed to be hydraulically connected to the underlying Intermediate aquifer via faults. These wells exhibit marked buildup effects due to injection as well as responses typical of the Shallow aquifer. The third pattern is demonstrated by three monitor wells near the principal production wells. This group of wells exhibits no seasonal potentiometric head fluctuations. Fluctuations which do occur are due to injection and pumpage. The three distinct hydrograph patterns are composites of the potentiometric head responses occurring in the various aquifers underlying the Raft River Site.

Skiba, P.A.; Allman, D.W.

1984-05-01T23:59:59.000Z

116

Requirements for downhole equipment used for geothermal-well stimulation. Geothermal-reservoir well-stimulation program  

DOE Green Energy (OSTI)

The needs for new and improved down-hole stimulation equipment for geothermal wells are identified. The following kinds of equipment are discussed: mechanical downhole recording instruments, electric line logging tools, and downhole tools used for zone isolation.

Not Available

1982-08-01T23:59:59.000Z

117

Exploratory Well At Coso Geothermal Area (1967) | Open Energy...  

Open Energy Info (EERE)

114.3 m. References Fournier, R. O.; Thompson, J. M.; Austin, C. F. (1 January 1978) Chemical analyses and preliminary interpretation of waters collected from the CGEH No. 1...

118

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL...  

Open Energy Info (EERE)

RESERVOIR DEVELOPMENT edit Details Activities (1) Areas (1) Regions (0) Abstract: Thermal stimulation can be utilized to precondition a well to optimize fracturing and...

119

Solicitation - Geothermal Drilling Development and Well Maintenance Projects  

DOE Green Energy (OSTI)

Energy (DOE)-industry research and development (R and D) organization, sponsors near-term technology development projects for reducing geothermal drilling and well maintenance costs. Sandia National Laboratories (Albuquerque, NM) administers DOE funds for GDO cost-shared projects and provides technical support. The GDO serves a very important function in fostering geothermal development. It encourages commercialization of emerging, cost-reducing drilling technologies, while fostering a spirit of cooperation among various segments of the geothermal industry. For Sandia, the GDO also serves as a means of identifying the geothermal industry's drilling fuel/or well maintenance problems, and provides an important forum for technology transfer. Successfully completed GDO projects include: the development of a high-temperature borehole televiewer, high-temperature rotating head rubbers, a retrievable whipstock, and a high-temperature/high-pressure valve-changing tool. Ongoing GDO projects include technology for stemming lost circulation; foam cement integrity log interpretation, insulated drill pipe, percussive mud hammers for geothermal drilling, a high-temperature/ high-pressure valve changing tool assembly (adding a milling capability), deformed casing remediation, high- temperature steering tools, diagnostic instrumentation for casing in geothermal wells, and elastomeric casing protectors.

Sattler, A.R.

1999-07-07T23:59:59.000Z

120

U.S. Average Depth of Natural Gas Exploratory Wells Drilled ...  

Annual Energy Outlook 2012 (EIA)

Wells Drilled (Feet per Well) U.S. Average Depth of Natural Gas Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8...

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Marble Hot Well Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Hot Well Geothermal Area Hot Well Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Marble Hot Well Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.75633,"lon":-120.36,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

122

Marysville Test Well Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Test Well Geothermal Area Test Well Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Marysville Test Well Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.75333333,"lon":-112.3766667,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

123

BLM Approves Salt Wells Geothermal Energy Projects | Open Energy  

Open Energy Info (EERE)

Energy Projects Energy Projects Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: BLM Approves Salt Wells Geothermal Energy Projects Abstract Abstract unavailable. Author Colleen Sievers Published U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada, 09/28/2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for BLM Approves Salt Wells Geothermal Energy Projects Citation Colleen Sievers. BLM Approves Salt Wells Geothermal Energy Projects [Internet]. 09/28/2011. Carson City, NV. U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada. [updated 2011/09/28;cited 2013/08/21]. Available from: http://www.blm.gov/nv/st/en/fo/carson_city_field/blm_information/newsroom/2011/september/blm_approves_salt.html

124

Buckhorn Mineral Wells Pool & Spa Low Temperature Geothermal Facility |  

Open Energy Info (EERE)

Buckhorn Mineral Wells Pool & Spa Low Temperature Geothermal Facility Buckhorn Mineral Wells Pool & Spa Low Temperature Geothermal Facility Facility Buckhorn Mineral Wells Sector Geothermal energy Type Pool and Spa Location Mesa, Arizona Coordinates 33.4222685°, -111.8226402° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

125

Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal...  

Open Energy Info (EERE)

Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems Experiment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Geology...

126

Hydraulic fracture stimulation treatment of Well Baca 23. Geothermal Reservoir Well-Stimulation Program  

DOE Green Energy (OSTI)

Well Stimulation Experiment No. 5 of the Geothermal Reservoir Well Stimulation Program (GRWSP) was performed on March 22, 1981 in Baca 23, located in Union's Redondo Creek Project Area in Sandoval County, New Mexico. The treatment selected was a large hydraulic fracture job designed specifically for, and utilizing frac materials chosen for, the high temperature geothermal environment. The well selection, fracture treatment, experiment evaluation, and summary of the job costs are presented herein.

Not Available

1981-06-01T23:59:59.000Z

127

Geothermal Well Maintenance and Repair in Cerro Prieto  

DOE Green Energy (OSTI)

When the first well is drilled at a geothermal field, procedures for the cleaning, repair, and control of wells should be established. This aspect will be increasingly important as more wells are drilled. Equipment, tools and techniques need to be improved to achieve economic and safe results. Different systems have been developed and applied in maintenance of wells, in problems of casing incrustations, repairs, plugging, and well control. These systems should be improved, even though they have been reasonably satisfactory to date.

Aguirre, B. D.; Blanco, F. V.

1981-01-01T23:59:59.000Z

128

Ornithological Survey of the Proposed Geothermal Well Site No. 2  

DOE Green Energy (OSTI)

The U.S. Fish and Wildlife Service (USFWS 1983) and the State of Hawaii (DLNR 1986) have listed as endangered six forest bird species for the Island of Hawaii. Two of these birds, the O'u (Psittirostra psittacea) and the Hawaiian hawk (Buteo solitarius) may be present within the Geothermal resource sub-zone (Scott et al. 1986). Thus, their presence could impact future development within the resource area. This report presents the results of a bird survey conducted August 11 and 12, 1990 in the sub-zone in and around the proposed well site and pad for True/Mid Pacific Geothermal Well No.2.

Jeffrey, Jack

1990-08-16T23:59:59.000Z

129

A Review of the Geothermal Reservoir Well Stimulation Program  

DOE Green Energy (OSTI)

Republic Geothermal, Inc., and its subcontractors have planned and executed four experimental fracture stimulation treatments under the Department of Energy-funded Geothermal Reservoir Well Stimulation Program (GRWSP). The 2-year program, begun in February 1979, is Ultimately to include six full-scale field hydraulic and chemical stimulation experiments in geothermal wells. This paper describes the overall program and the four treatments completed to date. The GRWSP is organized into two phases. Phase I consists of literature and theoretical studies, laboratory investigations, and numerical work. The main purpose of this work is to establish the technological bases for geothermal well stimulation design. Phase I1 will include the planning, execution, and evaluation of six well stimulation treatments which utilize the technology developed in Phase I. Two stimulation experiments were performed at the Raft River, Idaho, known geothermal resource area (KGRA) in late 1979. This is a naturally fractured, hard rock reservoir with a relatively low geothermal resource temperature 149 C {+-} (300 F{+-}). A conventional planar hydraulic fracture job was performed in Well RRGP-5 and a ''Kiel'' dendritic, or reverse flow, technique was utilized in Well RRGP-4. In mid-1980, two stimulation experiments were performed at the East Mesa, California, KGRA. The stimulation of Well 58-30 provided the first geothermal well fracturing experience in a moderate temperature, 177 C {+-} (350 F{+-}), reservoir with matrix-type rock properties. The two treatments consisted of a conventional hydraulic fracture of a deep, low-permeability zone and a mini-frac ''Kiel'' treatment of a shallow, high-permeability zone in the same well. The stimulation experiment results to date were evaluated using short-term production tests, conventional pressure transient analysis, interference pressure data, chemical and radioactive tracers, borehole acoustic televiewer surveys and numerical models. This combination of evaluation techniques yielded an interpretation of fracture geometry and productivity enhancement. However, the evaluation of artificially induced fractures in naturally fractured formations was found to lead to possibly non-unique solutions. In all the field experiments, artificial fractures were created and well productivity was increased. A discussion of the prestimulation and poststimulation data and their evaluation are provided for each experiment in this report.

Campbell, D. A.; Hanold, R. J.; Sinclair, A. R.; Vetter, O. J.

1981-01-01T23:59:59.000Z

130

Ceramic vacuum tubes for geothermal well logging  

DOE Green Energy (OSTI)

Useful design data acquired in the evaluation of ceramic vacuum tubes for the development of a 500/sup 0/C instrumentation amplifier are presented. The general requirements for ceramic vacuum tubes are discussed for application to the development of high temperature well logs. Commercially available tubes are described and future contract activities that specifically relate to ceramic vacuum tubes are detailed. Supplemental data are presented in the appendix.

Kelly, R.D.

1977-01-01T23:59:59.000Z

131

Buckhorn Mineral Wells Space Heating Low Temperature Geothermal Facility |  

Open Energy Info (EERE)

Space Heating Low Temperature Geothermal Facility Space Heating Low Temperature Geothermal Facility Facility Buckhorn Mineral Wells Sector Geothermal energy Type Space Heating Location Mesa, Arizona Coordinates 33.4222685°, -111.8226402° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

132

GEOFRAC: an explosives stimulation technique for a geothermal well  

DOE Green Energy (OSTI)

The first known use of explosives for stimulating a geothermal well was successfully conducted in December 1981 with a process called GEOFRAC. The 260/sup 0/C well was located at the Union Oil Company's Geysers Field in northern California. For the initial test, 364 kg of a new explosive called HITEX II was placed at a depth of 2256 meters and detonated to verify techniques. The explosive was contained in an aluminum canister to separate it from the well fluids. In the second test, 5000 kg of explosive was used representing a column length of approximately 191 meters. The explosive was detonated at a depth of 1697 meters in the same well. The results of these tests show that HITEX II can be safely emplaced and successfully detonated in a hot geothermal well without causing damage to the well bore or casing.

Mumma, D.M.; McCullough, F. Jr.; Schmidt, E.W.; Pye, D.S.; Allen, W.C.; Pyle, D.; Hanold, R.J.

1982-01-01T23:59:59.000Z

133

U.S. Footage Drilled for Crude Oil Exploratory Wells (Thousand...  

Annual Energy Outlook 2012 (EIA)

Wells (Thousand Feet) U.S. Footage Drilled for Crude Oil Exploratory Wells (Thousand Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1940's...

134

U.S. Footage Drilled for Natural Gas Exploratory Wells (Thousand...  

Gasoline and Diesel Fuel Update (EIA)

Wells (Thousand Feet) U.S. Footage Drilled for Natural Gas Exploratory Wells (Thousand Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1940's...

135

U.S. Footage Drilled for Dry Exploratory Wells (Thousand Feet...  

Gasoline and Diesel Fuel Update (EIA)

Wells (Thousand Feet) U.S. Footage Drilled for Dry Exploratory Wells (Thousand Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1940's 26,439...

136

U.S. Footage Drilled for Dry Exploratory and Developmental Wells...  

Gasoline and Diesel Fuel Update (EIA)

and Developmental Wells (Thousand Feet) U.S. Footage Drilled for Dry Exploratory and Developmental Wells (Thousand Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

137

U.S. Average Depth of Crude Oil Exploratory Wells Drilled (Feet ...  

U.S. Energy Information Administration (EIA)

U.S. Average Depth of Crude Oil Exploratory Wells Drilled (Feet per Well) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9; 1940's: 4,232 ...

138

Phase III Drilling Operations at the Long Valley Exploratory Well (LVF 51-20)  

DOE Green Energy (OSTI)

During July-September, 1998, a jointly funded drilling operation deepened the Long Valley Exploratory Well from 7178 feet to 9832 feet. This was the third major drilling phase of a project that began in 1989, but had sporadic progress because of discontinuities in tiding. Support for Phase III came from the California Energy Commission (CEC), the International Continental Drilling Program (ICDP), the US Geological Survey (USGS), and DOE. Each of these agencies had a somewhat different agenda: the CEC wants to evaluate the energy potential (specifically energy extraction from magma) of Long Valley Caldera; the ICDP is studying the evolution and other characteristics of young, silicic calderas; the USGS will use this hole as an observatory in their Volcano Hazards program; and the DOE, through Sandia, has an opportunity to test new geothermal tools and techniques in a realistic field environment. This report gives a description of the equipment used in drilling and testing; a narrative of the drilling operations; compiled daily drilling reports; cost information on the project; and a brief summary of engineering results related to equipment performance and energy potential. Detailed description of the scientific results will appear in publications by the USGS and other researchers.

Finger, J.T.; Jacobson, R.D.

1999-06-01T23:59:59.000Z

139

Transient well testing in two-phase geothermal reservoirs  

DOE Green Energy (OSTI)

A study of well test analysis techniques in two-phase geothermal reservoirs has been conducted using a three-dimensional, two-phase, wellbore and reservoir simulation model. Well tests from Cerro Prieto and the Hawaiian Geothermal project have been history matched. Using these well tests as a base, the influence of reservoir permeability, porosity, thickness, and heat capacity, along with flow rate and fracturing were studied. Single and two-phase transient well test equations were used to analyze these tests with poor results due to rapidly changing fluid properties and inability to calculate the flowing steam saturation in the reservoir. The injection of cold water into the reservoir does give good data from which formation properties can be calculated.

Aydelotte, S.R.

1980-03-01T23:59:59.000Z

140

Review of the geothermal reservoir well stimulation program  

SciTech Connect

The overall program and the four experimental fracture stimulation treatments completed to date are described. The GRWSP is organized into two phases. Phase I consists of studies (literature and theoretical), laboratory investigations, and numerical work. Phase II will include the planning, execution and evaluation of six well stimulation treatments which utilize the technology developed in Phase I. Two stimulation experiments were performed at the Raft River, Idaho, Known Geothermal Resource Area (KGRA) in late-1979. This is a naturally fractured, hard rock reservoir with a relatively low geothermal resource temperature (300/sup 0/F). A conventional planar hydraulic fracture job was performed in Well RRGP-5 and a Kiel dendritic (or reverse flow) technique was utilized in Well RRGP-4. In mid-1980, two stimulation experiments were performed at the East Mesa, California, KGRA. The stimulation of Well 58-30 provided the first geothermal well fracturing experience in a moderate temperature (350/sup 0/F/sup +/) reservoir with matrix type rock properties. The two treatments consisted of a conventional hydraulic fracture of a deep, low permeability zone and a minifrac Kiel treatment of a shallow, high permeability zone in the same well. The stimulation experiment results to date were evaluated using short-term production tests, conventional pressure transient analysis, interference pressure data, chemical and radioactive tracers, borehole acoustic televiewer surveys, and numerical models.

Campbell, D.A.; Hanold, R.J.; Sinclair, A.R.; Vetter, O.J.

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Technical support for geopressured-geothermal well activities in Louisiana  

DOE Green Energy (OSTI)

Continuous recording microearthquake monitoring networks have been established around US Department of Energy (DOE) geopressured-geothermal design wells in southwestern Louisiana and southeastern Texas since summer 1980 to assess the effects well development may have had on subsidence and growth-fault activation. This monitoring has shown several unusual characteristics of Gulf Coast seismic activity. The observed activity is classified into two dominant types, one with identifiable body phases (type 1) and the other with only surface-wave signatures (type 2). During this reporting period no type 1 or body-wave events were reported. A total of 230 type 2 or surface-wave events were recorded. Origins of the type 2 events are still not positively understood; however, little or no evidence is available to connect them with geopressured-geothermal well activity. We continue to suspect sonic booms from military aircraft or some other human-induced source. 37 refs., 16 figs., 6 tabs.

Not Available

1991-07-01T23:59:59.000Z

142

Estimating Well Costs for Enhanced Geothermal System Applications  

SciTech Connect

The objective of the work reported was to investigate the costs of drilling and completing wells and to relate those costs to the economic viability of enhanced geothermal systems (EGS). This is part of a larger parametric study of major cost components in an EGS. The possibility of improving the economics of EGS can be determined by analyzing the major cost components of the system, which include well drilling and completion. Determining what costs in developing an EGS are most sensitive will determine the areas of research to reduce those costs. The results of the well cost analysis will help determine the cost of a well for EGS development.

K. K. Bloomfield; P. T. Laney

2005-08-01T23:59:59.000Z

143

Auburn low-temperature geothermal well. Volume 6. Final report  

DOE Green Energy (OSTI)

The Auburn well was drilled to explore for low temperature geothermal resources in central New York State. The Auburn site was selected based on: its proximity to the Cayuga County anomaly (30/sup 0/C/km), its favorable local geological conditions and the potential to provide hot water and space heating to two educational facilities. The well was drilled to a total depth of 5250 feet and into the Pre-Cambrian Basement. The well was extensively logged, flow and stress tested, hydraulically stimulated, and pump (pressure transient analysis) tested. The low-temperature geothermal potential was assessed in terms of: geological environment; hydrological conditions; reservoir characteristics; and recoverable hydrothermal reserves. The average geothermal gradient was measured to be as high as 26.7/sup 0/C/km with a bottom-hole temperature of 126/sup 0/ +- 1/sup 0/F. The proved volumetric resources were estimated to be 3.0 x 10/sup 6/ stock tank barrels (STB) with a maximum initial deliverability of approx.11,600 STB/D and a continuous deliverability of approx.3400 STB/D. The proved hydrothermal reserves were estimated to be 21.58 x 10/sup 10/ Btu based on a volumetric component (4.13 x 10/sup 10/ Btu), and a reinjection component (17.45 x 10/sup 10/ Btu). The conclusion was made that the Auburn low-temperature reservoir could be utilized to provide hot water and space heating to the Auburn School District.

Lynch, R.S.; Castor, T.P.

1983-12-01T23:59:59.000Z

144

Completion report: Raft River Geothermal Injection Well Six (RRGI-6)  

DOE Green Energy (OSTI)

Raft River Geothermal Injection Well Six (RRGI-6) is an intermediate-depth injection well designed to accept injection water in the 600 to 1000 m (2000 to 3500 ft) depth range. It has one barefoot leg, and it was drilled so that additional legs can be added later; if there are problems with intermediate-depth injection, one or more additional legs could be directionally drilled from the current well bore. Included are the reports of daily drilling records of drill bits, casings, and loggings, and descriptions of cementing, coring, and containment.

Miller, L.G.; Prestwich, S.M.

1979-02-01T23:59:59.000Z

145

Enhanced Geothermal Systems (EGS) well construction technology evaluation report.  

DOE Green Energy (OSTI)

Electricity production from geothermal resources is currently based on the exploitation of hydrothermal reservoirs. Hydrothermal reservoirs possess three ingredients critical to present day commercial extraction of subsurface heat: high temperature, in-situ fluid and high permeability. Relative to the total subsurface heat resource available, hydrothermal resources are geographically and quantitatively limited. A 2006 DOE sponsored study led by MIT entitled 'The Future of Geothermal Energy' estimates the thermal resource underlying the United States at depths between 3 km and 10 km to be on the order of 14 million EJ. For comparison purposes, total U.S. energy consumption in 2005 was 100 EJ. The overwhelming majority of this resource is present in geological formations which lack either in-situ fluid, permeability or both. Economical extraction of the heat in non-hydrothermal situations is termed Enhanced or Engineered Geothermal Systems (EGS). The technologies and processes required for EGS are currently in a developmental stage. Accessing the vast thermal resource between 3 km and 10 km in particular requires a significant extension of current hydrothermal practice, where wells rarely reach 3 km in depth. This report provides an assessment of well construction technology for EGS with two primary objectives: (1) Determining the ability of existing technologies to develop EGS wells. (2) Identifying critical well construction research lines and development technologies that are likely to enhance prospects for EGS viability and improve overall economics. Towards these ends, a methodology is followed in which a case study is developed to systematically and quantitatively evaluate EGS well construction technology needs. A baseline EGS well specification is first formulated. The steps, tasks and tools involved in the construction of this prospective baseline EGS well are then explicitly defined by a geothermal drilling contractor in terms of sequence, time and cost. A task and cost based analysis of the exercise is subsequently conducted to develop a deeper understanding of the key technical and economic drivers of the well construction process. Finally, future research & development recommendations are provided and ranked based on their economic and technical significance.

Capuano, Louis, Jr. (Thermasource Inc.); Huh, Michael; Swanson, Robert (Thermasource Inc.); Raymond, David Wayne; Finger, John Travis; Mansure, Arthur James; Polsky, Yarom; Knudsen, Steven Dell

2008-12-01T23:59:59.000Z

146

Testing geopressured geothermal reservoirs in existing wells: Detailed completions prognosis for geopressured-geothermal well of opportunity, prospect #1  

SciTech Connect

This prospective well of opportunity was originally drilled and completed as a gas producer by Wrightsman Investment Company in early 1973. The original and present producing interval was from 15,216 to 15,238 feet. IMC Exploration Company, Inc. acquired the property from Wrightsman and is the present owner operator. The well is presently shut in s a non-economic producer and IMC proposed to perform plug and abandonment operations in April, 1980. This well has a good geopressured-geothermal water sand behind the 5-1/2 inch casing that has 94 feet of net sand thickness. Pursuant to DOE/NVO authorization of March 11,1980, Eaton negotiated an option agreement with IMC whereby IMC would delay their abandonment operations for a period of 90 days to permit DOE to evaluate the well for geopressure-geothermal testing. The IMC-Eaton option agreements provide that IMG will delay plugging the well until June 15, 1980. If Eaton exercises its option to acquire the well, IMC will sell the well bore, and an adjacent salt water disposal well, to Eaton for the sole consideration of Eaton assuming the obligation to plug and abandon the wells in accordance with lease and regulatory requirements. If Eaton does not exercise its option, then Eaton will pay IMC $95,000 cash and IMC will proceed with plugging and abandonment at the termination of the option period.

Kennedy, Clovis A.

1980-04-03T23:59:59.000Z

147

U.S. Geothermal Announces Successful Completion of First Well at Neal Hot  

Open Energy Info (EERE)

U.S. Geothermal Announces Successful Completion of First Well at Neal Hot U.S. Geothermal Announces Successful Completion of First Well at Neal Hot Springs Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Geothermal Announces Successful Completion of First Well at Neal Hot Springs Abstract N/A Author U.S. Geothermal Inc. Published Publisher Not Provided, 2008 Report Number N/A DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for U.S. Geothermal Announces Successful Completion of First Well at Neal Hot Springs Citation U.S. Geothermal Inc.. 2008. U.S. Geothermal Announces Successful Completion of First Well at Neal Hot Springs. Boise Idaho: (!) . Report No.: N/A. Retrieved from "http://en.openei.org/w/index.php?title=U.S._Geothermal_Announces_Successful_Completion_of_First_Well_at_Neal_Hot_Springs&oldid=682770"

148

Results of Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A  

Open Energy Info (EERE)

Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Results of Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A Abstract N/A Authors James Kauahikaua and Douglas Klein Published Journal Geothermal Resources Council, TRANSACTIONS, 1978 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Results of Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A Citation James Kauahikaua,Douglas Klein. 1978. Results of Electric Survey in the Area of Hawaii Geothermal Test Well HGP-A. Geothermal Resources Council, TRANSACTIONS. 2:363-366. Retrieved from "http://en.openei.org/w/index.php?title=Results_of_Electric_Survey_in_the_Area_of_Hawaii_Geothermal_Test_Well_HGP-A&oldid=682499

149

Comprehensive study of LASL Well C/T-2 Roosevelt Hot Springs KGRA, Utah, and applications to geothermal well logging  

DOE Green Energy (OSTI)

Utah State Geothermal Well 9-1 in the Roosevelt Hot Springs KGRA, Beaver County, Utah, has been donated by Phillips Petroleum Company for calibration and testing of well-logging equipment in the hot, corrosive, geothermal environment. It is the second Calibration/Test Well (C/T-2) in the Geothermal Log Interpretation Program. A study of cuttings and well logs from Well C/T-2 was completed. This synthesis and data presentation contains most of the subsurface geologic information needed to effect the total evaluation of geophysical logs acquired in this geothermal calibration/test well, C/T-2.

Glenn, W.E.; Hulen, J.B.; Nielson, D.L.

1981-02-01T23:59:59.000Z

150

Geothermal reservoir well stimulation program. First-year progress report  

DOE Green Energy (OSTI)

The Geothermal Reservoir Well Stimulation Program (GRWSP) group planned and executed two field experiments at the Raft River KGRA during 1979. Well RRGP-4 was stimulated using a dendritic (Kiel) hydraulic fracture technique and Well RRGP-5 was stimulated using a conventional massive hydraulic fracture technique. Both experiments were technically successful; however, the post-stimulation productivity of the wells was disappointing. Even though the artificially induced fractures probably successfully connected with the natural fracture system, reservoir performance data suggest that productivity remained low due to the fundamentally limited flow capacity of the natural fractures in the affected region of the reservoir. Other accomplishments during the first year of the program may be summarized as follows: An assessment was made of current well stimulation technology upon which to base geothermal applications. Numerous reservoirs were evaluated as potential candidates for field experiments. A recommended list of candidates was developed which includes Raft River, East Mesa, Westmorland, Baca, Brawley, The Geysers and Roosevelt Hot Springs. Stimulation materials (fracture fluids, proppants, RA tracer chemicals, etc.) were screened for high temperature properties, and promising materials selected for further laboratory testing. Numerical models were developed to aid in predicting and evaluating stimulation experiments. (MHR)

Not Available

1980-02-01T23:59:59.000Z

151

Microfossils from Cerro Prieto geothermal wells, Baja California, Mexico  

DOE Green Energy (OSTI)

To aid in a paleoenvironmental and age reconstruction of the Cerro Prieto reservoir system, 59 samples of well cuttings were analyzed for microfossils. The cuttings were obtained at depths from 351 to 3495 m in 14 geothermal wells in the Cerro Prieto field, Baja California, Mexico. We found foraminifera in 6 samples, ostracodes in 19 samples, and nannoplankton as coccoliths in 24 samples. Other groups, such as molluscs, insects, fish skeletal parts, and plant material were occasionally present. Detailed interpretations are not possible at this time because of poor preservation of samples. This is primarily due to causes: dissolution by geothermal fluids that reach 350{sup 0}C, and the extensive mixing of filled Cretaceous forms (reworked from the Colorado Plateau region) with Tertiary species during drilling. Further studies of ostracodes and foraminifera from colder portions of the wells are needed. The abundant and well-preserved ostracodes indicate marine to brackish water environments that correspond, in part, to lagoonal or estuarine facies. The presence of the mid-Tertiary (15-My-old) marine foraminifera, Cassigerinela chipolensis, in wells M-11 and M-38, 350 to 500 m deep, is perplexing. These are not laboratory contaminates and, as yet, have not been found in the drilling mud. If further studies confirm their presence at Cerro Prieto, established ideas about the opening of the Gulf of California and about Pacific Coast mid-Tertiary history will need to be rewritten.

Cotton, M.L.; Vonder Haar, S.

1980-01-01T23:59:59.000Z

152

U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes  

Open Energy Info (EERE)

Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project Abstract N/A Author U.S. Geothermal Inc. Published Publisher Not Provided, 2010 Report Number N/A DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project Citation U.S. Geothermal Inc.. 2010. U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project. Boise Idaho: (!) . Report No.: N/A.

153

Sampling and Interpretation of Drill Cuttings from Geothermal Wells  

DOE Green Energy (OSTI)

Drill cuttings from geothermal and mineral exploration boreholes, by contrast with those from most petroleum wells, commonly are derived highly fractured and faulted, hydrothermally altered igneous and metamorphic rock sequences, and are likely to be severely contaminated. Characterization of a subsurface resource from cuttings thus requires not only especially careful sample collection, preparation, storage and examination, but also a thorough knowledge of drilling technology, local geology and the full range of potential borehole contaminants. Accurate identification of lithology from cuttings is critical for recognition and correlation of rock types likely to selectively host the desired commodity. However, many of the rocks encountered in geothermal and mineral exploration boreholes (such as gneisses and granitic rocks) can resemble one another closely as cuttings even though dissimilar in outcrop or core. In such cases, the actual rock type(s) in a cuttings sample generally can be determined by comparison with simulated cuttings of representative surface rocks, and with various geophysical and other well logs. Many other clues in cuttings, such as diagnostic metamorphic mineralogy, or sedimentary rounding and sorting, may help identify subsurface lithologies. Faults and fractures commonly are the dominant physical controls on geothermal and mineral resources. Faults occasionally can be recognized directly in cuttings by the presence of slickensiding, gouge, or other crushed material. More commonly, however, the ''gouge'' observed in cuttings actually is pseudo-gouge created beneath a bit during drilling. Since most faults and all fractures produce no direct evidence apparent in cuttings, they are best recognized indirectly, either by commonly associated hydrothermal alteration, or by responses on appropriate geophysical well logs. Hydrothermal alteration, useful for locating and defining a geothermal or mineral resource, is far more difficult to recognize and interpret in cuttings than in core or outcrop. Alteration textures and paragenetic relationships can be obscured or obliterated as cuttings are produced. Less resistant alteration (and rock-forming) minerals can be disaggregated during drilling and lost from cuttings during sampling or washing. Relict and contemporary alteration can be indistinguishable, and a wide variety of borehole contaminants can closely resemble natural alteration products encountered during drilling. These contaminants also can produce confusing geochemical signatures.

Hulen, Jeffrey B.; Sibbett, Bruce S.

1981-01-01T23:59:59.000Z

154

Stepout-Deepening Wells At Coso Geothermal Area (1986) | Open Energy  

Open Energy Info (EERE)

Stepout-Deepening Wells At Coso Geothermal Area (1986) Stepout-Deepening Wells At Coso Geothermal Area (1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Step-out Well At Coso Geothermal Area (1986) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Step-out Well Activity Date 1986 Usefulness not indicated DOE-funding Unknown Notes A step-out exploration/production well drilled in 1986 to a depth of 6553 ft located several miles south of the Devil's Kitchen region along the identified north-south feature produced fluids with a temperature greater than 640 F. References Austin, C.F.; Bishop, B.P.; Moore, J. (1 May 1987) Structural interpretation of Coso Geothermal field, Inyo County, California Retrieved from "http://en.openei.org/w/index.php?title=Stepout-Deepening_Wells_At_Coso_Geothermal_Area_(1986)&oldid=687864"

155

High-Temperature Circuit Boards for use in Geothermal Well Monitoring  

Open Energy Info (EERE)

Temperature Circuit Boards for use in Geothermal Well Monitoring Temperature Circuit Boards for use in Geothermal Well Monitoring Applications Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title High-Temperature Circuit Boards for use in Geothermal Well Monitoring Applications Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature Downhole Tools Project Description Geothermal energy offers an abundant, renewable source of power that could be used to ensure the long-term energy independence of our nation. Currently, geothermal power in the United States is produced from relatively shallow wells that also contain naturally occurring water sources. These current geothermal power plants with near-ideal conditions for geothermal power production exist primarily in the western U.S. In order to expand the use of geothermal energy, new technologies are needed that will enable the utilization of the hot, dry rock located at depths up to 10 km. The introduction of water into these deep wells to create geothermal reservoirs is referred to as Enhanced Geothermal System (EGS).

156

Drilling, Completing, and Maintaining Geothermal Wells in Baca, New Mexico  

DOE Green Energy (OSTI)

A 55-MWe power plant is planned for development in the Baca location in the Jemez Mountains of New Mexico. Union Geothermal has contracted to provide the steam for the power plant. This paper uses Baca Well No. 13 as a case history to describe the drilling methods, casing program, cementing program, and completion methods used by Union. The discussion includes aerated-water drilling and the methods of solving corrosion problems in aerated water. lost circulation control in mud drilling and its effect on the subsequent casing cementing program are discussed. The paper also includes a case history of scale removal methods used in Baca Well No. 11, including drilling the scale out with a turbo-drill and attempts at chemical inhibition.

Pye, S.

1981-01-01T23:59:59.000Z

157

Detection, diagnosis, and prognosis in geothermal well technology  

DOE Green Energy (OSTI)

For successful and safe operation of a geothermal well, the condition of the casing and cement must be accurately determined. Measurements on casing wall thickness, corrosion damage, holes, cracks, splits, etc., are needed to assess casing integrity. Cement bond logs are needed to detect channels or water pockets in cement behind pipe and to determine the state of the cement bond to the pipe and formation. Instrumentation for making such measurements is limited by the temperature capabilities (<175/sup 0/C) of existing logging equipment developed for the oil and gas industry. The instruments that are needed for geothermal casing and cementing inspection are reviewed; the principle deficiencies in their high temperature use are identified; and Sandia's upgrade research program on multi-arm caliper and acoustic cement bond logging tool is described. The key electronic section in a multi-arm caliper will consist of 275/sup 0/C circuits. In an acoustic cement bond logging tool, a simple circuit with possibilities of using commercially available components for high temperature operation is being developed. These new tools will be field tested for operation at a minimum temperature of 275/sup 0/C and pressure of 7000 psi for up to 1000 hours.

Veneruso, A.F.; Chang, H.T.

1980-01-01T23:59:59.000Z

158

Estimation of static formation temperatures in geothermal wells by using an artificial neural network approach  

Science Conference Proceedings (OSTI)

An artificial neural network (ANN) approach was used to develop a new predictive model for the calculation of static formation temperature (SFT) in geothermal wells. A three-layer ANN architecture was successfully trained using a geothermal borehole ... Keywords: Artificial intelligence, Borehole drilling, Bottom-hole temperature, Geothermal energy, Horner method, Levenberg-Marquardt algorithm, Shut-in time

A. Bassam; E. Santoyo; J. Andaverde; J. A. Hernndez; O. M. Espinoza-Ojeda

2010-09-01T23:59:59.000Z

159

Modeling discharge requirements for deep geothermal wells at the Cerro Prieto geothermal field, MX  

DOE Green Energy (OSTI)

During the mid-l980's, Comision Federal de Electricidad (CFE) drilled a number of deep wells (M-200 series) at the Cerro Prieto geothermal field, Baja California, Mexico to investigate the continuation of the geothermal reservoir to the east of the Cerro Prieto-II and III production areas. The wells encountered permeability at depths ranging from 2,800 to 4,400 m but due to the reservoir depth and the relatively cold temperatures encountered in the upper 1,000 to 2,000 m of the wells, it was not possible to discharge some of the wells. The wells at Cerro Prieto are generally discharged by injecting compressed air below the water level using 2-3/8-inch tubing installed with either a crane or workover rig. The objective of this technique is to lift sufficient water out of the well to stimulate flow from the reservoir into the wellbore. However, in the case of the M-200 series wells, the temperatures in the upper 1,000 to 2,000 m are generally below 50 C and the heat loss to the formation is therefore significant. The impact of heat loss on the stimulation process was evaluated using both a numerical model of the reservoir/wellbore system and steady-state wellbore modeling. The results from the study indicate that if a flow rate of at least 300 liters/minute can be sustained, the well can probably be successfully stimulated. This is consistent with the flow rates obtained during the successful stimulations of wells M-202 and M-203. If the flow rate is closer to 60 liters/minute, the heat loss is significant and it is unlikely that the well can be successfully discharged. These results are consistent with the unsuccessful discharge attempts in wells M-201 and M-205.

Menzies, Anthony J.; Granados, Eduardo E.; Puente, Hector Gutierrez; Pierres, Luis Ortega

1995-01-26T23:59:59.000Z

160

Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal  

Open Energy Info (EERE)

Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal exploration well sidetrack-C Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal exploration well sidetrack-C Details Activities (1) Areas (1) Regions (0) Abstract: Cassia County Idaho; data; geophysical surveys; Idaho; Raft River geothermal area; surveys; United States; USGS; Well No. 3; well-logging Author(s): Covington, H.R. Published: Open-File Report - U. S. Geological Survey, 1/1/1978 Document Number: Unavailable DOI: Unavailable Exploratory Well At Raft River Geothermal Area (1977) Raft River Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Deep_drilling_data,_Raft_River_geothermal_area,_Idaho-Raft_River_geothermal_exploration_well_sidetrack-C&oldid=473365"

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
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161

Geothermal well completions: an overview of existing methods in four types of developments  

DOE Green Energy (OSTI)

Existing practices and capabilities for completing producing and injection wells for geothermal application in each of four categories of geothermal environments are discussed. Included are steam wells in hard, fractured rocks (The Geysers, California), hot water wells in sedimentary formations (Imperial Valley, California), hot, dry impermeable rocks with circulating water systems (Valles Caldera, New Mexico), and geopressured, geothermal water wells with associated hydrocarbon production on the U.S. Gulf Coast.

Snyder, R.E.

1978-01-01T23:59:59.000Z

162

Research in lost circulation control for geothermal wells  

DOE Green Energy (OSTI)

This paper reviews recent progress at Sandia National Laboratories in the area of lost circulation control for geothermal wells. The Lost Circulation Program has three major elements: (1) Detection and characterization of loss zones, (2) Development of new techniques and materials for control of loss zones, and (3) Integration of the first two items for wellsite application. Most of our work to date has been in the area of developing new techniques and materials. We report here on progress that has been made in the past two years in the development of new, pumpable cementitious muds, in situ mixing and placement of polyurethane foams, and fundamental analysis of and materials development for particulate lost circulation materials. Plans for work in the area of zone detection and characterization, including development of a transient, lost circulation hydraulics simulator and field zone characterization using an advanced wellbore televiewer, are discussed.

Ortega, A.; Loeppke, G.E.; Givler, R.C.

1987-01-01T23:59:59.000Z

163

Polymer grouts for plugging lost circulation in geothermal wells.  

DOE Green Energy (OSTI)

We have concluded a laboratory study to evaluate the survival potential of polymeric materials used for lost circulation plugs in geothermal wells. We learned early in the study that these materials were susceptible to hydrolysis. Through a systematic program in which many potential chemical combinations were evaluated, polymers were developed which tolerated hydrolysis for eight weeks at 500 F. The polymers also met material, handling, cost, and emplacement criteria. This screening process identified the most promising materials. A benefit of this work is that the components of the polymers developed can be mixed at the surface and pumped downhole through a single hose. Further strength testing is required to determine precisely the maximum temperature at which extrusion through fractures or voids causes failure of the lost circulation plug.

Galbreath, D. (Green Mountain International, Waynesvile, NC); Mansure, Arthur James; Bauer, Stephen J.

2004-12-01T23:59:59.000Z

164

Development Wells At Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) |  

Open Energy Info (EERE)

Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Development Wells Activity Date Usefulness useful DOE-funding Unknown Notes Fenton Hill HDR site. References Z. V. Dash, H. D. Murphy, R. L. Aamodt, R. G. Aguilar, D. W. Brown, D. A. Counce, H. N. Fisher, C. O. Grigsby, H. Keppler, A. W. Laughlin, R. M. Potter, J. W. Tester, P. E. Trujillo Jr, G. Zyvoloski (1983) Hot Dry Rock Geothermal Reservoir Testing- 1978 To 1980 Retrieved from "http://en.openei.org/w/index.php?title=Development_Wells_At_Fenton_Hill_Hdr_Geothermal_Area_(Dash,_Et_Al.,_1983)&oldid=511310"

165

Observation Wells At Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) |  

Open Energy Info (EERE)

Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Observation Wells At Fenton Hill Hdr Geothermal Area (Dash, Et Al., 1983) Exploration Activity Details Location Fenton Hill Hdr Geothermal Area Exploration Technique Observation Wells Activity Date Usefulness useful DOE-funding Unknown Notes Fenton Hill HDR site. References Z. V. Dash, H. D. Murphy, R. L. Aamodt, R. G. Aguilar, D. W. Brown, D. A. Counce, H. N. Fisher, C. O. Grigsby, H. Keppler, A. W. Laughlin, R. M. Potter, J. W. Tester, P. E. Trujillo Jr, G. Zyvoloski (1983) Hot Dry Rock Geothermal Reservoir Testing- 1978 To 1980 Retrieved from "http://en.openei.org/w/index.php?title=Observation_Wells_At_Fenton_Hill_Hdr_Geothermal_Area_(Dash,_Et_Al.,_1983)&oldid=511330"

166

Program in geothermal well technology directed toward achieving DOE/DGE power-on-line goals  

DOE Green Energy (OSTI)

This document presents the material used in an oral presentation to the DOE/Division of Geothermal Energy, which was designed to illustrate the importance of well technology development in reducing geothermal well costs, and to achieve geothermal power-on-line goals. Examination of recent studies of the economics of geothermal energy leads to the conclusion that the overall sensitivity of geothermal power-on-line to well cost is in the range of one to two. Current data suggest that a vigorous R and D program in rotary drilling technology can reduce geothermal drilling costs by about 20%, but a reduction of 40 to 50% is needed to achieve DOE/DGE goals. Research in advanced drilling systems is needed to satisfy this more stringent requirement. Some critical technological deficiencies that occur when current rotary drilling techniques are used for geothermal drilling are discussed. A broadly based development program directed at correcting these deficiencies is defined.

Polito, J.; Varnado, S.G.

1978-10-01T23:59:59.000Z

167

Thermodynamic calculations of calcium carbonate scaling in geothermal wells, Dixie Valley geothermal field, U. S. A  

Science Conference Proceedings (OSTI)

Wells in the Dixie Valley geothermal field of central Nevada intercept a fracture-dominated hydrothermal system at depths of 2.5 to 3 km. The reservoir water is a dilute sodium-bicarbonate-chloride type of solution thought to be in equilibrium with quartz, calcite, chlorite, and albite. Fluid sampling and chemical analysis of production during an early flow test gave remarkably low calcium concentrations. Thermodynamic calculations of mineral stability in the presence of the reservoir water indicate that five times the amount of calcium measured in fluid reaching the surface is actually in solution in the reservoir fluid. Approximately 80 percent of the calcium is lost as calcium carbonate scale on the well casing before the fluid reaches the surface. The results of thermodynamic calculations compare well with the scale-volume measurements of Benoit.

Reed, M.J. (Geothermal Technology Div., U.S. Dept. of Energy, Washington, DC (US))

1989-01-01T23:59:59.000Z

168

Well Log Techniques At Raft River Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

Well Log Techniques At Raft River Geothermal Area Well Log Techniques At Raft River Geothermal Area (1977) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Well Log Techniques Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Characterize the rock using well log data. Notes Information is given on the following logs: dual-induction focused log, including resistivity, sp, and conductivity; acoustic log; compensated neutron; compensated densilog; and caliper. Lithologic breaks for a drill core to a depth of 2840 ft are illustrated. References Covington, H.R. (1 January 1978) Deep drilling data, Raft River geothermal area, Idaho Raft River geothermal exploration well No. 4 Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Raft_River_Geothermal_Area_(1977)&oldid=6004

169

Feasibility investigation and design study of optical well logging methods for high temperature geothermal wells  

DOE Green Energy (OSTI)

The objective of this project was exploration of a novel approach to high temperature well logging, based on a system of optical transducers and an optical transmission line both theoretically capable of operation to at least 600/sup 0/C. The scope of the work involved the accomplishment of ten specific tasks. These had as their objective the determination of feasibility, and identification of major problem areas, in the implementation of continuous temperature logging of geothermal wells using optical techniques. The following tasks are reported: literature review and data compilation, measurement of fiber properties production fiber procurement, investigation of methods of fiber termination, cable design and fabrication, and sensor and system studies. (MHR)

Swanson, R.K.; Anderson, R.E.; Ash, J.I.; Beissner, R.E.; Smith, V.D.

1978-03-01T23:59:59.000Z

170

Data acquisition for low-temperature geothermal well tests and long-term monitoring. Final report  

DOE Green Energy (OSTI)

Groundwater monitoring is an essential part of the development of a low-temperature geothermal field for production and injection wells. State water resource and environmental departments are requiring both geothermal well testing and long-term monitoring as a part of the permitting process for geothermal developments. This report covers water-level measurement methods, instruments used for well testing, geochemical sampling, examples of data acquisition and regulatory mandates on groundwater monitoring.

Lienau, P.J.

1992-09-01T23:59:59.000Z

171

Data acquisition for low-temperature geothermal well tests and long-term monitoring  

DOE Green Energy (OSTI)

Groundwater monitoring is an essential part of the development of a low-temperature geothermal field for production and injection wells. State water resource and environmental departments are requiring both geothermal well testing and long-term monitoring as a part of the permitting process for geothermal developments. This report covers water-level measurement methods, instruments used for well testing, geochemical sampling, examples of data acquisition and regulatory mandates on groundwater monitoring.

Lienau, P.J.

1992-09-01T23:59:59.000Z

172

Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems  

Open Energy Info (EERE)

of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems Experiment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems Experiment Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Geothermal Field is a large, high temperature system located in California on the western edge of the Basin and Range province. Well 46A-19RD, located in the southwestern portion of this field is currently the focus of a DOE-funded Enhanced Geothermal Systems (EGS) project. Petrologic and petrographic investigations of the well show that quartz diorite and granodiorite are dominant lithologies. Dikes of granophyre, containing phenocrysts of plagioclase, potassium feldspar, and

173

Phase 2 Reese River Geothermal Project Slim Well 56-4 Drilling And Testing  

Open Energy Info (EERE)

Phase 2 Reese River Geothermal Project Slim Well 56-4 Drilling And Testing Phase 2 Reese River Geothermal Project Slim Well 56-4 Drilling And Testing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Phase 2 Reese River Geothermal Project Slim Well 56-4 Drilling And Testing Details Activities (6) Areas (1) Regions (0) Abstract: This report covers the drilling and testing of the slim well 56-4 at the Reese River Geothermal Project in Lander County, Nevada. This well was partially funded through a GRED III Cooperative Funding Agreement # DE-FC36-04GO14344, from USDOE. Author(s): William R. Henkle, Joel Ronne Published: Geothermal Technologies Legacy Collection, 2008 Document Number: Unavailable DOI: Unavailable Source: View Original Report Compound and Elemental Analysis At Reese River Area (Henkle & Ronne, 2008)

174

High-Temperature Circuit Boards for use in Geothermal Well Monitoring...  

Open Energy Info (EERE)

energy independence of our nation. Currently, geothermal power in the United States is produced from relatively shallow wells that also contain naturally occurring water...

175

Geothermal Energy for New Mexico: Assessment of Potential and Exploratory Drilling  

SciTech Connect

This report summarizes the drilling operations and subsequent interpretation of thermal and geochemical data from the New Mexico Tech NMT-2GT (OSE RG- 05276 POD) test well. This slim hole was drilled along an elongate heat-flow anomaly at the base of the Socorro Mountains to better assess the geothermal resource potential (Socorro Peak geothermal system) on the western side of the New Mexico Tech campus in Socorro, New Mexico. The reservoir depth, hydraulic properties, temperature and chemistry were unknown prior to drilling. The purpose of the NMT-2GT (OSE RG-05276 POD) well was to explore the feasibility of providing geothermal fluids for a proposed district space heating system on the New Mexico Tech campus. With DOE cost over runs funds we completed NMT-2GT to a depth of 1102 feet at the Woods Tunnel drill site. Temperatures were nearly constant (41 oC ) between a depth of 400???????????????????????????????¢????????????????????????????????????????????????????????????????1102 feet. Above this isothermal zone, a strong temperature gradient was observed (210 oC /km) beneath the water table consistent with vertical convective heat transfer. The existence of a groundwater upflow zone was further supported by measured vertical hydraulic head measurements which varied between about 258 feet at the water table to 155 feet at a depth of 1102 feet yielding a vertical hydraulic a gradient of about 0.1. If the upflow zone is 1 km deep, then a vertical flow rate is about 0.6 m/yr could have produced the observed curvature in the thermal profile. This would suggest that the deep bedrock permeability is about 20 mD. This is much lower than the permeability measured in a specific capacity aquifer test completed in 2009 within fracture Paleozoic sandstones near the water table (3000 D). Flow rates measured during drilling were measured using a v-notch weir. Flow rates were consistently around 1000 gpm. While the temperatures are lower than we had anticipated, this geothermal resource can still be developed to heat the NM Tech campus using heat pump technology.

Mark Person, Lara Owens, James Witcher

2010-02-17T23:59:59.000Z

176

Multielement geochemistry of three geothermal wells, Cove Fort-Sulphurdale geothermal area, Utah  

DOE Green Energy (OSTI)

Multielement geochemical analysis of drill cuttings from three geothermal wells, Utah State 42-7, Utah State 31-33 and Forminco No. 1, in the Cove Fort-Sulphurdale KGRA, Utah, demonstrates that the distributions of different elements are the result of different chemical processes operating throughout the geologic history of the area. Statistical analysis of geochemical-data distributions confirm the presence of several distinct element associations. Of the 36 elements determined on the samples, 12 (V, Mo, Cd, Ag, Au, Sb, Bi, U, Te, Sn, B and Th) were present in concentrations at or below detection levels. Of the remaining 24 elements, only 3 (Ni, Co and Zr) are lognormally distributed. Distributions for the remaining elements are of aggregate populations which represent background, mineralization or other processes.

Christensen, O.D.

1982-09-01T23:59:59.000Z

177

A Resource Assessment Of Geothermal Energy Resources For Converting Deep Gas Wells In Carbonate Strata Into Geothermal Extraction Wells: A Permian Basin Evaluation  

Science Conference Proceedings (OSTI)

Previously conducted preliminary investigations within the deep Delaware and Val Verde sub-basins of the Permian Basin complex documented bottom hole temperatures from oil and gas wells that reach the 120-180C temperature range, and occasionally beyond. With large abundances of subsurface brine water, and known porosity and permeability, the deep carbonate strata of the region possess a good potential for future geothermal power development. This work was designed as a 3-year project to investigate a new, undeveloped geographic region for establishing geothermal energy production focused on electric power generation. Identifying optimum geologic and geographic sites for converting depleted deep gas wells and fields within a carbonate environment into geothermal energy extraction wells was part of the project goals. The importance of this work was to affect the three factors limiting the expansion of geothermal development: distribution, field size and accompanying resource availability, and cost. Historically, power production from geothermal energy has been relegated to shallow heat plumes near active volcanic or geyser activity, or in areas where volcanic rocks still retain heat from their formation. Thus geothermal development is spatially variable and site specific. Additionally, existing geothermal fields are only a few 10s of square km in size, controlled by the extent of the heat plume and the availability of water for heat movement. This plume radiates heat both vertically as well as laterally into the enclosing country rock. Heat withdrawal at too rapid a rate eventually results in a decrease in electrical power generation as the thermal energy is mined. The depletion rate of subsurface heat directly controls the lifetime of geothermal energy production. Finally, the cost of developing deep (greater than 4 km) reservoirs of geothermal energy is perceived as being too costly to justify corporate investment. Thus further development opportunities for geothermal resources have been hindered. To increase the effective regional implementation of geothermal resources as an energy source for power production requires meeting several objectives. These include: 1) Expand (oil and gas as well as geothermal) industry awareness of an untapped source of geothermal energy within deep permeable strata of sedimentary basins; 2) Identify and target specific geographic areas within sedimentary basins where deeper heat sources can be developed; 3) Increase future geothermal field size from 10 km2 to many 100s km2 or greater; and 4) Increase the productive depth range for economic geothermal energy extraction below the current 4 km limit by converting deep depleted and abandoned gas wells and fields into geothermal energy extraction wells. The first year of the proposed 3-year resource assessment covered an eight county region within the Delaware and Val Verde Basins of West Texas. This project has developed databases in Excel spreadsheet form that list over 8,000 temperature-depth recordings. These recordings come from header information listed on electric well logs recordings from various shallow to deep wells that were drilled for oil and gas exploration and production. The temperature-depth data is uncorrected and thus provides the lower temperature that is be expected to be encountered within the formation associated with the temperature-depth recording. Numerous graphs were developed from the data, all of which suggest that a log-normal solution for the thermal gradient is more descriptive of the data than a linear solution. A discussion of these plots and equations are presented within the narrative. Data was acquired that enable the determination of brine salinity versus brine density with the Permian Basin. A discussion on possible limestone and dolostone thermal conductivity parameters is presented with the purpose of assisting in determining heat flow and reservoir heat content for energy extraction. Subsurface maps of temperature either at a constant depth or within a target geothermal reservoir are discusse

Erdlac, Richard J., Jr.

2006-10-12T23:59:59.000Z

178

A Deep Geothermal Exploration Well At Eastgate, Weardale, Uk- A Novel  

Open Energy Info (EERE)

Geothermal Exploration Well At Eastgate, Weardale, Uk- A Novel Geothermal Exploration Well At Eastgate, Weardale, Uk- A Novel Exploration Concept For Low-Enthalpy Resources Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Deep Geothermal Exploration Well At Eastgate, Weardale, Uk- A Novel Exploration Concept For Low-Enthalpy Resources Details Activities (0) Areas (0) Regions (0) Abstract: The first deep geothermal exploration borehole (995 m) to be drilled in the UK for over 20 years was completed at Eastgate (Weardale, Co. Durham) in December 2004. It penetrated 4 m of sandy till (Quaternary), 267.5 m of Lower Carboniferous strata (including the Whin Sill), and 723.5 m of the Weardale Granite (Devonian), with vein mineralization occurring to 913 m. Unlike previous geothermal investigations of UK radiothermal

179

Analysis of thermally induced permeability enhancement in geothermal injection wells  

DOE Green Energy (OSTI)

Reinjection of spent geothermal brine is a common means of disposing of geothermal effluents and maintaining reservoir pressures. Contrary to the predictions of two-fluid models (two-viscosity) of nonisothermal injection, an increase of injectivity, with continued injection, is often observed. Injectivity enhancement and thermally-affected pressure transients are particularly apparent in short-term injection tests at the Los Azufres Geothermal Field, Mexico. During an injection test, it is not uncommon to observe that after an initial pressure increase, the pressure decreases with time. As this typically occurs far below the pressure at which hydraulic fracturing is expected, some other mechanism for increasing the near-bore permeability must explain the observed behavior. This paper focuses on calculating the magnitude of the nearbore permeability changes observed in several nonisothermal injection tests conducted at the Los Azufres Geothermal Field.

Benson, S.M.; Daggett, J.S.; Iglesias, E.; Arellano, V.; Ortiz-Ramirez, J.

1987-02-01T23:59:59.000Z

180

New high temperature cementing materials for geothermal wells: stability and properties. Final report  

DOE Green Energy (OSTI)

Potential high-temperature cements have been formulated and evaluated in terms of their properties for geothermal well cementing. Phase formation and compatibility in two major compositional regions were investigated in the temperature region between 200 and 400/sup 0/C and pressures up to 69 MPa (10,000 psi). These were followed by an evaluation of properties of the cements formed. One area in the system Ca0-Mg0-Si0/sub 2/-H/sub 2/0 centered around the xonotlite-chrysotile join while the other area of interest centered around the anorthite composition in the system Ca0-Al/sub 2/O/sub 3/-SiO/sub 2/-H/sub 2/O. After numerous exploratory studies, the magnesia-containing mixtures were prepared by mixing a Class J cement with various sources of magnesia such as calcined chrysotile, or magnesium oxide. Calcium oxide and silica fine quartz powder were also added to adjust the compositions. The aluminous system cements were formulated from high-alumina cements which were mixed with various silica sources.

Roy, D.M.; White, E.L.; Langton, C.A.; Grutzeck, M.W.

1980-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project |  

Open Energy Info (EERE)

BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project Abstract No abstract available. Author Bureau of Land Management Organization Bureau of Land Management, Carson City Field Office, Nevada Published U.S. Department of the Interior, 2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project Citation Bureau of Land Management (Bureau of Land Management, Carson City Field Office, Nevada). 2011. BLM Fact Sheet- Vulcan Power Company Salt Wells Geothermal Energy Project. Carson City, Nevada: U.S. Department of the

182

GRR/Section 4-OR-c - Geothermal Prospect Well Process | Open Energy  

Open Energy Info (EERE)

GRR/Section 4-OR-c - Geothermal Prospect Well Process GRR/Section 4-OR-c - Geothermal Prospect Well Process < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 4-OR-c - Geothermal Prospect Well Process 04ORCGeothermalProspectWellProcess (1).pdf Click to View Fullscreen Contact Agencies Oregon State Department of Geology and Mineral Industries Regulations & Policies ORS 516: DOGAMI ORS 522: Geothermal Resources Triggers None specified Click "Edit With Form" above to add content 04ORCGeothermalProspectWellProcess (1).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative _ 4-OR-c.1 - Has Environmental Process Been Completed?

183

Testing geopressured geothermal reservoirs in existing wells: Detailed completion prognosis for geopressured-geothermal well of opportunity, prospect #2  

DOE Green Energy (OSTI)

A geopressured-geothermal test of Martin Exploration Company's Crown Zellerbach Well No. 2 will be conducted in the Tuscaloosa Trend. The Crown Zellerbach Well No. 1 will be converted to a saltwater disposal well for disposal of produced brine. The well is located in the Satsuma Area, Livingston parish, Louisiana. Eaton proposes to test the Tuscaloosa by perforating the 7 inch casing from 16,718 feet to 16,754 feet. The reservoir pressure at an intermediate formation depth of 16,736 feet is anticipated to be 12,010 psi and the temperature is anticipated to be 297 F. Calculated water salinity is 16,000 ppm. The well is expected to produce a maximum of 16,000 barrels of water a day with a gas content of 51 SCF/bbl. Eaton will re-enter the test well, clean out to 17,000 feet, run production casing and complete the well. The disposal well will be re-entered and completed in the 9-5/8 inch casing for disposal of produced brine. Testing will be conducted similar to previous Eaton annular flow WOO tests. An optional test from 16,462 feet to 16,490 feet may be performed after the original test and will require a workover with a rig on location to perform the plugback. The surface production equipment utilized on previous tests will be utilized on this test. The equipment has worked satisfactorily and all parties involved in the testing are familiar with its operation. Weatherly Engineering will operate the test equipment. The Institute of Gas Technology (IGT) and Mr. Don Clark will handle sampling, testing and reservoir engineering evaluation, respectively. wireline work required will be awarded on basis of bid evaluation. At the conclusion of the test period, the D.O.E. owned test equipment will be removed from the test site, the test and disposal wells plugged and abandoned and the sites restored to the satisfaction of all parties.

None

1981-03-01T23:59:59.000Z

184

Geothermal Well Operations and Automation in a Competitive Market  

DOE Green Energy (OSTI)

America's increasing dependence on foreign energy sources, and the national environmental initiatives, based on the increasing awareness of the need for protection of the environment, have led to the development of the Department of Energy's (DOE) domestic US alternative energy programs. One of these programs is the current US Gulf Coast Geopressured-Geothermal Program, conducted at three sites in Louisiana and Texas. Excellent results have been obtained in reaching the objectives for this production operation and energy conversion project, which are: (1) to determine the size of geopressured-geothermal reservoirs and the drive mechanisms by long-term, high volume, flow testing; (2) prove long-term injectability of large volumes of spent brine; (3) develop modified scale inhibitor treatment procedures; (4) develop methods for reduction of erosion/corrosion; (5) develop technology for automated operation of geopressured-geothermal production system; and (6) develop technology to produce power economically from the geopressured-geothermal resources. The long-term flow test at the Gladys McCall site has shown the producing reservoir is many times it original, projected size. Flow tests are being conducted at the Pleasant Bayou site in Texas. Another reservoir, at the Hulin site in Louisiana, remains for initiation of testing, at a time to be determined. Gas sales and electrical power generation from the geopressured-geothermal resources have proven that these are reliable alternative power sources. Continuing work is being done for field automation to improve the economics of these operations.

Eaton, B.A.; Featherston, C.R.; Meahl, T.E.; Randolph, P.L.

1992-03-24T23:59:59.000Z

185

Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA | Open  

Open Energy Info (EERE)

Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Details Activities (3) Areas (2) Regions (0) Abstract: Three wells have been drilled by the Los Angeles Department of Water and Power at the Coso Hot Springs KGRA. A long-term flow test was conducted involving one producing well (well 43-7), one injector (well 88-1), and two observation wells (well 66-6 and California Energy Co's well 71A-7). This paper presents the equipment and techniques involved and the results from the long-term test conducted between December 1985 and February 1986. Author(s): Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.;

186

Geothermal Literature Review At Salt Wells Area (Faulds, Et Al., 2011) |  

Open Energy Info (EERE)

Salt Wells Area (Faulds, Et Al., 2011) Salt Wells Area (Faulds, Et Al., 2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Salt Wells Area (Faulds, Et Al., 2011) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 2011 Usefulness useful regional reconnaissance DOE-funding ARRA (American Recovery and Reinvestment Act) Exploration Basis The paper reports on the first phase of a three-stage DOE-ARRA (American Recovery and Reinvestment Act)-funded study that integrates knowledge of favorable structural settings in the Great Basin region with the goal of developing a structural catalogue that can be used to refine exploration strategies for geothermal resources (particularly for blind/hidden systems)

187

U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs...  

Open Energy Info (EERE)

U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project Jump to: navigation, search OpenEI Reference LibraryAdd to library...

188

Analysis Of Macroscopic Fractures In Granite In The Hdr Geothermal Well  

Open Energy Info (EERE)

Macroscopic Fractures In Granite In The Hdr Geothermal Well Macroscopic Fractures In Granite In The Hdr Geothermal Well Eps-1, Soultz-Sous-Forets, France Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Macroscopic Fractures In Granite In The Hdr Geothermal Well Eps-1, Soultz-Sous-Forets, France Details Activities (0) Areas (0) Regions (0) Abstract: An exhaustive analysis of 3000 macroscopic fractures encountered in the geothermal Hot Dry Rock borehole, EPS-1, located inside the Rhine graben (Soultz-sous-Forets, France), was done on a continuous core section over a depth interval from 1420 to 2230 m: 97% of the macroscopic structures were successfully reorientated with a good degree of confidence by comparison between core and acoustic borehole imagery. Detailed structural analysis of the fracture population indicates that fractures are

189

Drilling and operating oil, gas, and geothermal wells in an H/sub 2/S environment  

DOE Green Energy (OSTI)

The following subjects are covered: facts about hydrogen sulfides; drilling and operating oil, gas, and geothermal wells; detection devices and protective equipment; hazard levels and safety procedures; first aid; and H/sub 2/S in California oil, gas, and geothermal fields. (MHR)

Dosch, M.W.; Hodgson, S.F.

1981-01-01T23:59:59.000Z

190

Program on Technology Innovation: Modeling of Single-Well Closed-Loop Enhanced Geothermal Systems  

Science Conference Proceedings (OSTI)

Conventional enhanced geothermal systems (EGSs) include one production well and one injection well to use hydrothermal resources to generate electricity. However, the high initial cost of drilling EGS wells is one of the main factors that hurt its competitiveness with other energy sources. The single-well closed-loop EGS (SWCLEGS) is a new type of geothermal power generation technology that aims to eliminate the need for natural hydrothermal resources with a relatively low drilling cost. The objective of...

2012-02-28T23:59:59.000Z

191

Pressure Profiles in Two-Phase Geothermal Wells: Comparison of Field Data and Model Calculations  

DOE Green Energy (OSTI)

Increased confidence in the predictive power of two-phase correlations is a vital part of wellbore deliverability and deposition studies for geothermal wells. Previously, the Orkiszewski (1967) set of correlations has been recommended by many investigators to analyze geothermal wellbore performance. In this study, we use measured flowing pressure profile data from ten geothermal wells around the world, covering a wide range of flowrate, fluid enthalpy, wellhead pressure and well depth. We compare measured and calculated pressure profiles using the Orkiszewski (1967) correlations.

Ambastha, A.K.; Gudmundsson, J.S.

1986-01-21T23:59:59.000Z

192

Compilation of cores and cuttings from U. S. Government-sponsored geothermal wells  

DOE Green Energy (OSTI)

This compendium lists the repositories holding geothermal core and well cuttings from US government-sponsored geothermal wells. Also, a partial listing of cores and cutting from these wells is tabulated, along with referenced reports and location maps. These samples are available to the public for research investigations and studies, usually following submission of an appropriate request for use of the samples. The purpose of this compilation is to serve as a possible source of cores and cuttings that might aid in enhancing rock property studies in support of geothermal log interpretation.

Mathews, M.; Gambill, D.T.; Rowley, J.C.

1980-07-01T23:59:59.000Z

193

Evaluation of testing and reservoir parameters in geothermal wells at Raft  

Open Energy Info (EERE)

testing and reservoir parameters in geothermal wells at Raft testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Evaluation of testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Evaluating the Raft River and Boise, Idaho, resources by pump and injection tests require information on the geology, geochemistry, surficial and borehole geophysics, and well construction and development methods. Nonideal test conditions and a complex hydrogeologic system prevent the use of idealized mathematical models for data evaluation in a one-phase fluid system. An empirical approach is successfully used since it was observed that all valid pump and injection well pressure data for constant discharge

194

Geothermal Well Costs and their Sensitivities to Changes in Drilling and Completion Operations  

SciTech Connect

This paper presents a detailed analysis of the costs of drilling and completing geothermal wells. The basis for much of the analysis is a computer-simulation-based model which calculates and accrues operational costs involved in drilling and completing a well. Geothermal well costs are discussed in general, with special emphasis on variations among different geothermal areas in the United States, effects of escalation and inflation over the past few years, and comparisons of geothermal drilling costs with those for oil and gas wells. Cost differences between wells for direct use of geothermal energy and those for electric generation, are also indicated. In addition, a breakdown of total well cost into its components is presented. This provides an understanding of the relative contributions of different operations in drilling and completions. A major portion of the cost in many geothermal wells is from encountered troubles, such as lost circulation, cementing difficulties, and fishing. These trouble costs are considered through both specific examples and statistical treatment of drilling and completions problems. The sensitivities of well costs to variations in several drilling and completion parameters are presented. The mode1 makes it possible to easily vary parameters such as rates of penetration; bit lifetimes; bit rental, or rig costs; delay times; number of cement plugs; etc. are compared.

Carson, C. C.; Lin, Y.T.

1981-01-01T23:59:59.000Z

195

Lost circulation in geothermal wells: survey and evaluation of industry experience  

DOE Green Energy (OSTI)

Lost circulation during drilling and completion of geothermal wells can be a severe problem, particularly in naturally fractured and/or vugular formations. Geothermal and petroleum operators, drilling service companies, and independent consultants were interviewed to assess the lost circulation problem in geothermal wells and to determine general practices for preventing lost circulation. This report documents the results and conclusions from the interviews and presents recommendations for needed research. In addition, a survey was also made of the lost circulation literature, of currently available lost circulation materials, and of existing lost circulation test equipment.

Goodman, M.A.

1981-07-01T23:59:59.000Z

196

Environmental monitoring at designed geopressured-geothermal well sites, Louisiana and Texas  

DOE Green Energy (OSTI)

This document covers the activities of monitoring environmental aspects at designated geothermal wells in Texas and Louisiana during the second quarter of 1990 by the Louisiana Geological Survey, Louisiana State University under contract with US DOE. 1 fig. (FSD)

Not Available

1990-01-01T23:59:59.000Z

197

Drilling for geothermal resources: rules and regulations and minimum well construction standards  

DOE Green Energy (OSTI)

The following geothermal rules and regulations are presented: authority; policy; definitions; drilling; records; blow out prevention; injection wells; abandonment; maintenance; hearings; notice procedures; hearings on refused, limited, or conditioned permit; appeals; penalties; and forms;

Not Available

1978-06-01T23:59:59.000Z

198

The Geochemistry of the HGP-A Geothermal Well: A Review and an Update  

DOE Green Energy (OSTI)

The HGP-A geothermal well, located on the lower east rift system of Kilauea volcano, has provided steam and hot water to a 3 MWe wellhead generator facility on a continuous basis since December 1981.

Thomas, Donald M.

1988-01-01T23:59:59.000Z

199

Review of surface-equipment requirements for geothermal-well stimulation. Geothermal-reservoir well-stimulation program  

DOE Green Energy (OSTI)

A summary of stimulation equipment available to geothermal industry is presented and some modifications from which it could benefit are discussed. Equipment requirements for hydraulic fracturing, acid fracturing, acidizing, and other chemical treatments are included. Designs for the following are reviewed: equipment for premixing and storing treatment fluids, proppant handling equipment, pump trucks, special equipment for foam fracturing, intensifier pumps, manifolding, and monitoring and control devices.

Not Available

1982-02-01T23:59:59.000Z

200

Geothermal field case studies that document the usefulness of models in predicting reservoir and well behavior  

SciTech Connect

The geothermal industry has shown significant interest in case histories that document field production histories and demonstrate the techniques which work best in the characterization and evaluation of geothermal systems. In response to this interest, LBL has devoted a significant art of its geothermal program to the compilation and analysis of data from US and foreign fields (e.g., East Mesa, The Geysers, Susanville, and Long Valley in California; Klamath Falls in Oregon; Valles Caldera, New Mexico; Cerro Prieto and Los Azufres in Mexico; Krafla and Nesjavellir in Iceland; Larderello in Italy; Olkaria in Kenya). In each of these case studies we have been able to test and validate in the field, or against field data, the methodology and instrumentation developed under the Reservoir Technology Task of the DOE Geothermal Program, and to add to the understanding of the characteristics and processes occurring in geothermal reservoirs. Case study results of the producing Cerro Prieto and Olkaria geothermal fields are discussed in this paper. These examples were chosen because they illustrate the value of conceptual and numerical models to predict changes in reservoir conditions, reservoir processes, and well performance that accompany field exploitation, as well as to reduce the costs associated with the development and exploitation of geothermal resources. 14 refs., 6 figs.

Lippmann, M.J.

1989-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Geothermal Field Case Studies that Document the Usefulness of Models in Predicting Reservoir and Well Behavior  

SciTech Connect

The geothermal industry has shown significant interest in case histories that document field production histories and demonstrate the techniques which work best in the characterization and evaluation of geothermal systems. In response to this interest, LBL has devoted a significant part of its geothermal program to the compilation and analysis of data from US and foreign fields (e.g., East Mesa, The Geysers, Susanville, and Long Valley in California; Klamath Fall in Oregon; Valles Caldera, New Mexico; Cerro Prieto and Los Azufres in Mexico; Krafla and Nesjavellir in Iceland; Larderello in Italy; Olkaria in Kenya). In each of these case studies we have been able to test and validate in the field, or against field data, the methodology and instrumentation developed under the Reservoir Technology Task of the DOE Geothermal Program, and to add to the understanding of the characteristics and processes occurring in geothermal reservoirs. Case study results of the producing Cerro Prieto and Olkaria geothermal fields are discussed in this paper. These examples were chosen because they illustrate the value of conceptual and numerical models to predict changes in reservoir conditions, reservoir processes, and well performance that accompany field exploitation, as well as to reduce the costs associated with the development and exploitation of geothermal resources.

Lippmann, Marcelo J.

1989-03-21T23:59:59.000Z

202

Phase 1 drilling operations at the Magma Energy Exploratory Well (LVF 51-20)  

DOE Green Energy (OSTI)

This report describes the Phase 1 drilling operations for the Magma Energy Exploratory Well near Mammoth Lakes, California. An important part of the Department of Energy's Magma Energy Program, this well is designed to reach an ultimate depth of 20,000 feet or a bottomhole temperature of 500{degree}C, whichever comes first. There will be four drilling phases, at least a year apart, with scientific investigations in the borehole between the drilling intervals. Phase 1 of this project resulted in a 20 inch cased hole to 2558 feet, with 185 feet of coring beyond that. This document comprises a narrative of the daily activities, copies of the daily mud and lithologic reports, time breakdowns of rig activities, inventories of lost circulation materials, temperature logs of the cored hole, and a strip chart mud log. 2 figs.

Finger, J.T.; Jacobson, R.D.

1990-12-01T23:59:59.000Z

203

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of Alice C. Plantation No. 2 Well  

DOE Green Energy (OSTI)

This Gruy Federal Type II-B, geopressured-geothermal (Geo) prospect was drilled as the Sun Oil Company, No. 2 Alice C. Plantation and is located in Section 2, Township 16-S, Range 10-E, St. mary Parish, Louisiana. The well site is 3,705.61 feet from U.S.C. and G.S. marker ''Foster''. The well site is located in a sugar cane field, and is accessible by approximately 2,500 feet of cane field road. The well was originally drilled to a depth of 19,000 feet and abandoned as a dry hole in December, 1963. The location is shown on the west central area of the USGS topographic sheet, 'North Bend'', Louisiana, in the Gruy Federal report, ''Investigation and Evaluation of Geopressured-Geothermal Wells, prospective Test Wells in the Texas and Louisiana Gulf Coast'', March 20, 1978.

None

1978-05-01T23:59:59.000Z

204

Prospects for improvement in geothermal well technology and their expected benefits  

DOE Green Energy (OSTI)

Performance restrictions on current geothermal drilling technology and their impact on drilling costs are reviewed, with the impact on electric power costs. Sensitivities of drilling costs to changes in drilling performance are analyzed. A programmatic goal for improving drilling performance is offered. The likely cost savings to the nation if the goal is attained are estimated though the use of a geothermal well drilling scenario for the 1978 to 1990 period, which was derived from DOE's geothermal power on-line scenario. The present worth of the expectd savings stream (benefit) is offered as a point of departure for justifying programmatic costs for improving drilling technology.

Not Available

1978-06-01T23:59:59.000Z

205

Automatic detection and diagnosis of problems in drilling geothermal wells  

DOE Green Energy (OSTI)

Sandia National Laboratories and Tracor Applied Sciences have developed a proof-of-concept Expert System for the automatic detection and diagnosis of several important problems in geothermal drilling. The system is designed to detect loss of circulation, influx, loss of pump efficiency, and sensor problems. Data from flow sensors (including the rolling float meter), the pump stroke counter and other sensors are processed and examined for deviations from expected patterns. The deviations from expected patterns. The deviations are transformed into evidence for a Bayesian Network (a probabilistic reasoning tool), which estimates the probability of each fault. The results are displayed by a Graphical User Interface, which also allows the user to see data related to a specific fault. The prototype was tested on real data, and successfully detected and diagnosed faults.

Harmse, J.E.; Wallace, R.D.; Mansure, A.J.; Glowka, D.A.

1997-11-01T23:59:59.000Z

206

A Special Application Coiled Tubing Applied Plug for Geothermal Well Casing Remediation  

DOE Green Energy (OSTI)

Casing deformation in wells is a common problem in many geothermal fields. Casing remediation is necessary to keep wells in production and occasionally, to even enter the well for an approved plug and abandonment procedure. The costly alternative to casing remediation is to incur the expense of drilling a new well to maintain production or drilling a well to intersect a badly damaged well below the deformation for abandonment purposes. The U.S. Department of Energy and the Geothermal Drilling Organization sponsor research and development work at Sandia National Laboratories in an effort to reduce these remediation expenditures. Sandia, in cooperation with Halliburton Energy Services, has developed a low cost, commercially available, bridge-plug-type packer for use in geothermal well environments. This report documents the development and testing of this tool for use in casing remediation work.

Knudsen, S.D.; Sattler, A.R.; Staller, G.E.

1999-05-13T23:59:59.000Z

207

Montana: basic data for thermal springs and wells as recorded in GEOTHERM  

DOE Green Energy (OSTI)

GEOTHERM sample file contains 225 records for Montana. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Montana. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

Bliss, J.D.

1983-07-01T23:59:59.000Z

208

Colorado: basic data for thermal springs and wells as recorded in GEOTHERM  

DOE Green Energy (OSTI)

GEOTHERM sample file contains 225 records for Colorado. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Colorado. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

Bliss, J.D.

1983-05-01T23:59:59.000Z

209

Basic data for thermal springs and wells as recorded in GEOTHERM: Arizona  

DOE Green Energy (OSTI)

GEOTHERM sample file contains 314 records for Arizona. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Arizona. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

Bliss, J.D.

1983-05-01T23:59:59.000Z

210

Basic data for thermal springs and wells as recorded in GEOTHERM: Wyoming  

DOE Green Energy (OSTI)

GEOTHERM sample file contains 356 records for Wyoming. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for Wyoming. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

Bliss, J.D.

1983-05-01T23:59:59.000Z

211

Basic data for thermal springs and wells as recorded in GEOTHERM: New Mexico  

DOE Green Energy (OSTI)

GEOTHERM sample file contains 251 records for New Mexico. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for New Mexico. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

Bliss, J.D.

1983-07-01T23:59:59.000Z

212

Economic impact of using nonmetallic materials in low to intermediate temperature geothermal well construction  

DOE Green Energy (OSTI)

Four appendices are included. The first covers applications of low-temperature geothermal energy including industrial processes, agricultural and related processes, district heating and cooling, and miscellaneous. The second discusses hydrogeologic factors affecting the design and construction of low-temperature geothermal wells: water quality, withdrawal rate, water depth, water temperature, basic well designs, and hydrogeologic provinces. In the third appendix, properties of metallic and nonmetallic materials are described, including: specific gravity, mechanical strength properties, resistance to physical and biological attack, thermal properties of nonmetallics, fluid flow characteristics, corrosion resistance, scaling resistance, weathering resistance of nonmetallics, and hydrolysis resistance of nonmetallics. Finally, special considerations in the design and construction of low-temperature geothermal wells using nonmetallics materials are covered. These include; drilling methods, joining methods, methods of casing and screen installation, well cementing, and well development. (MHR)

Not Available

1979-12-01T23:59:59.000Z

213

Geopressured-geothermal well activities in Louisiana. Annual report, 1 January 1991--31 December 1991  

DOE Green Energy (OSTI)

Since September 1978, microseismic networks have operated continuously around US Department of Energy (DOE) geopressured-geothermal well sites to monitor any microearthquake activity in the well vicinity. Microseismic monitoring is necessary before flow testing at a well site to establish the level of local background seismicity. Once flow testing has begun, well development may affect ground elevations and/or may activate growth faults, which are characteristic of the coastal region of southern Louisiana and southeastern Texas where these geopressured-geothermal wells are located. The microseismic networks are designed to detest small-scale local earthquakes indicative of such fault activation. Even after flow testing has ceased, monitoring continues to assess any microearthquake activity delayed by the time dependence of stress migration within the earth. Current monitoring shows no microseismicity in the geopressured-geothermal prospect areas before, during, or after flow testing.

John, C.J.

1992-10-01T23:59:59.000Z

214

CNCC Craig Campus Geothermal Program: 82-well closed loop GHP...  

Open Energy Info (EERE)

campus. The primary component in this campus approach is the common GHP well field ground heat exchanger (GHEX). The innovative design of the shared well field will demonstrate...

215

A Resource Assessment Of Geothermal Energy Resources For Converting Deep Gas Wells In Carbonate Strata Into Geothermal Extraction Wells: A Permian Basin Evaluation  

DOE Green Energy (OSTI)

4) Increase the productive depth range for economic geothermal energy extraction below the current 4 km limit by converting deep depleted and abandoned gas wells and fields into geothermal energy extraction wells. The first year of the proposed 3-year resource assessment covered an eight county region within the Delaware and Val Verde Basins of West Texas. This project has developed databases in Excel spreadsheet form that list over 8,000 temperature-depth recordings. These recordings come from header information listed on electric well logs recordings from various shallow to deep wells that were drilled for oil and gas exploration and production. The temperature-depth data is uncorrected and thus provides the lower temperature that is be expected to be encountered within the formation associated with the temperature-depth recording. Numerous graphs were developed from the data, all of which suggest that a log-normal solution for the thermal gradient is more descriptive of the data than a linear solution. A discussion of these plots and equations are presented within the narrative. Data was acquired that enable the determination of brine salinity versus brine density with the Permian Basin. A discussion on possible limestone and dolostone thermal conductivity parameters is presented with the purpose of assisting in determining heat flow and reservoir heat content for energy extraction. Subsurface maps of temperature either at a constant depth or within a target geothermal reservoir are discusse

Erdlac, Richard J., Jr.

2006-10-12T23:59:59.000Z

216

In situ experiments of geothermal well stimulation using gas fracturing technology  

DOE Green Energy (OSTI)

The results of an experimental study of gas fracturing technology for geothermal well stimulation demonstrated that multiple fractures could be created to link water-filled boreholes with existing fractures. The resulting fracture network and fracture interconnections were characterized by mineback as well as flow tests. Commercial oil field fracturing tools were used successfully in these experiments. Simple scaling laws for gas fracturing and a brief discussion of the application of this technique to actual geothermal well stimulation are presented. 10 refs., 42 figs., 4 tabs.

Chu, T.Y.; Warpinski, N.; Jacobson, R.D.

1988-07-01T23:59:59.000Z

217

Development of a Special Application Coiled Tubing Applied Plug for Geothermal Well Casing Remediation  

DOE Green Energy (OSTI)

Casing deformation in producing geothermal wells is a common problem in many geothermal fields, mainly due to the active geologic formations where these wells are typically located. Repairs to deformed well casings are necessary to keep the wells in production and to occasionally enter a well for approved plugging and abandonment procedures. The costly alternative to casing remediation is to drill a new well to maintain production and/or drill a well to intersect the old well casing below the deformation for abandonment purposes. The U.S. Department of Energy and the Geothermal Drilling Organization sponsored research and development work at Sandia National Laboratories in an effort to reduce these casing remediation expenditures. Sandia, in cooperation with Halliburton Energy Services, developed a low cost, bridge-plug-type, packer for use in casing remediation work in geothermal well environments. This report documents the development and testing of this commercially available petal-basket packer called the Special Application Coiled Tubing Applied Plug (SACTAP).

STALLER,GEORGE E.; KNUDSEN,STEVEN D.; SATTLER,ALLAN R.

1999-10-01T23:59:59.000Z

218

BLM Approves Salt Wells Geothermal Plant in Churchill County | Open Energy  

Open Energy Info (EERE)

Plant in Churchill County Plant in Churchill County Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: BLM Approves Salt Wells Geothermal Plant in Churchill County Abstract Abstract unavailable. Author Mark Struble Published U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada, 02/13/2005 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for BLM Approves Salt Wells Geothermal Plant in Churchill County Citation Mark Struble. BLM Approves Salt Wells Geothermal Plant in Churchill County [Internet]. 02/13/2005. Carson City, NV. U.S. Department of the Interior- Bureau of Land Management, Carson City Field Office, Nevada. [updated 2005/02/13;cited 2013/08/21]. Available from: http://www.blm.gov/nv/st/en/info/newsroom/Carson_City_News_Archives/2005/02/blm_approves_salt.html

219

Development of New Geothermal Wellbore Holdup Correlations Using Flowing Well Data  

Science Conference Proceedings (OSTI)

Geothermal well performances depend primarily on four factors: reservoir pressure, permeability, temperature and wellbore size. The ability to predict both the quantity of fluid that can be produced and its thermodynamic state (pressure, temperature, enthalpy, gas content, salinity, etc.) is essential for estimating the total usable energy of a geothermal resource. Numerical reservoir simulators can be utilized to calculate the thermodynamic state of the fluid in the reservoir when it enters the wellbore. To compute the fluid properties as it travels up the wellbore to the well-head given certain reservoir conditions the use of a wellbore simulator is needed. This report contains new correlations for flowing geothermal wells to accurately estimate produced fluid properties.

Sabodh K. Garg; John W. Pritchett; James H. Alexander; Joel Renner

2004-03-01T23:59:59.000Z

220

Phase 2 Reese River Geothermal Project Slim Well 56-4 Drilling and Testing  

DOE Green Energy (OSTI)

This report covers the drilling and testing of the slim well 56-4 at the Reese River Geothermal Project in Lander County, Nevada. This well was partially funded through a GRED III Cooperative Funding Agreement # DE-FC36-04GO14344, from USDOE.

Henkle, William R.; Ronne, Joel

2008-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Geothermal well technology and potential applications of Subterrene devices: a status review  

DOE Green Energy (OSTI)

The past, present, and some future aspects of the geothermal energy (GTE) industry have been reviewed with special attention given to geothermal well-drilling problems. Geothermal wells can be produced with present equipment and methods, mostly derived from the oil and gas industry, but costs are relatively high. Short-term improvements are needed in drilling rigs and auxiliary surface equipment, drill bits, bit-bearing lubrication systems, tubular goods, high-temperature muds and cements, logging and downhole sampling equipment, directional control equipment applicable to geothermal conditions,and in the use of a data bank for GTE wells to help optimize drilling programs. Two types of wells are needed: (1) small-diameter wells for exploration, reinjection, and disposal purposes, and (2) larger-diameter wells for production. To develop and greatly expand the use of GTE in the future, new methods and equipment are needed to penetrate hard abrasive rocks and to provide hole stabilization and support at the very high temperatures and other extreme conditions which can be encountered in GTE wells. New Los Alamos Scientific Laboratory concepts for penetrating rocks by use of rock-melting processes (called Subterrene concepts) offer potential solutions to some difficult GTE well-production problems.

Altseimer, J.H.

1974-07-01T23:59:59.000Z

222

Subterrene rock-melting concept applied to the production of deep geothermal wells  

DOE Green Energy (OSTI)

The drilling of wells comprises a large fraction of the costs of geothermal energy-extraction plants, and billions of dollars for wells will be needed before geothermal energy is nationally significant. Technical and cost studies were made of the application of the Subterrene concept, i.e., excavating and penetrating rocks or soils by melting, to deep wells such as may be used for dry-hot-rock or geopressure geothermal energy extraction systems. Technically, it was found that Subterrene requirements are compatible with those of current rotary drilling practices. Certain features of the rock-melting concept such as the glass lining on the borehole wall, and nonrotation, provide opportunities for the development of better well production techniques in hot wells. A typical optimum-cost well would be rotary-drilled in the upper regions and then rock-melted to total depth. Indicated cost-savings are significant: a 33 percent or 4.5 million dollars reduction from rotary drilled well costs are estimated for a 10 km depth well with bottom hole temperatures of 673 K. Even for normal geothermal gradient conditions, the savings for the 10 km depth is estimated as 23 percent or 2 million dollars.

Altseimer, J.H.

1976-01-01T23:59:59.000Z

223

Technical and cost analysis of rock-melting systems for producing geothermal wells. [GEOWELL  

DOE Green Energy (OSTI)

The drilling of wells makes up a large fraction of the costs of geothermal energy-extraction plants, and billions of dollars for wells will be needed before geothermal energy is nationally significant. Technical and economic systems studies are summarized regarding the application of the Subterrene concept, i.e., excavating and penetrating rocks or soils by melting, to the production of deep wells such as may be used for dry hot rock or geopressurized geothermal energy-extraction systems. Technically, it was found that Subterrene features are compatible with those of current rotary drilling practices. In fact, some special features could lead to improved well production techniques. These include the buildup of a glass lining along the borehole wall which provides structural resistance to collapse; close control of hole geometry; the existence of a barrier between the drilling fluids and the formations being penetrated; nonrotation; potentially better bit life; and faster rates of penetration in deep, hard rock. A typical optimum-cost well would be rotary-drilled in the upper regions and then rock-melted to total depth. Indicated cost savings are significant: a 30 percent or 3.9 million dollar (1975 $) reduction from rotary-drilled well costs are estimated for a 10-km depth well with a bottom hole temperature of 673 K. Even for relatively cool normal geothermal gradient conditions, the savings for the 1..pi..-km well are estimated as 23 percent of 2.1 million dollars.

Altseimer, J.H.

1976-11-01T23:59:59.000Z

224

Economic impact of using nonmetallic materials in low to intermediate temperature geothermal well construction. Volume 1  

DOE Green Energy (OSTI)

The results are presented of an exhaustive literature search and evaluation concerning the properties and economics of commercially available nonmetallic well casing and screens. These materials were studied in terms of their use in low to intermediate temperature geothermal well construction.

Not Available

1979-12-01T23:59:59.000Z

225

Investigation and evaluation of geopressured-geothermal wells  

DOE Green Energy (OSTI)

Over the life of the project, 1143 wildcat wells were screened for possible use. Although many did not meet the program's requirement for sand development, a surprisingly large number were abandoned because of downhole mechanical problems. Only 94 of these wells were completed as commercial hydrocarbon producers. Five wells of opportunity were funded for testing. Of these, two were evaluated for their hydraulic energy, thermal energy, and recoverable methane, and three were abandoned because of mechanical problems. (MHR)

Hartsock, J.H.; Rodgers, J.A.

1980-09-01T23:59:59.000Z

226

EA for Well Field Development at Patua Geothermal Area -DOI...  

Open Energy Info (EERE)

material storage. Off-pad stormwater would be directed away from the well pads. *An emergency response plan would be implemented that includes contingencies for hazardous...

227

Three dimensional interpretations of single-well electromagnetic data for geothermal applications  

E-Print Network (OSTI)

Energy, Office of Wind and Geothermal Technologies of theTwenty-Ninth Workshop on Geothermal Reservoir EngineeringELECTROMAGNETIC DATA FOR GEOTHERMAL APPLICATIONS Hung-Wen

Tseng, Hung-Wen; Lee, Ki Ha

2004-01-01T23:59:59.000Z

228

Phase 2 drilling operations at the Long Valley Exploratory Well (LVF 51--20)  

DOE Green Energy (OSTI)

This report describes the second drilling phase, completed to a depth of 7588 feet in November 1991, of the Long Valley Exploratory Well near Mammoth Lakes, California. The well in Long Valley Caldera is planned to reach an ultimate depth of 20,000 feet or a bottomhole temperature of 500{degrees}C (whichever comes first). There will be four drilling phases, at least a year apart with scientific experiments in the wellbore between active drilling periods. Phase 1 drilling in 1989 was completed with 20 in. casing from surface to a depth of 2558 ft., and a 3.8 in. core hole was drilled below the shoe to a depth of 2754 in. Phase 2 included a 17-{1/2} in. hole out of the 20 in. shoe, with 13-3/8 in. casing to 6825 ft., and continuous wireline coring below that to 7588 ft. This document comprises a narrative log of the daily activities, the daily drilling reports, mud logger's reports, summary of drilling fluids used, and other miscellaneous records.

Finger, J.T.; Jacobson, R.D.

1992-06-01T23:59:59.000Z

229

Phase 2 drilling operations at the Long Valley Exploratory Well (LVF 51--20)  

SciTech Connect

This report describes the second drilling phase, completed to a depth of 7588 feet in November 1991, of the Long Valley Exploratory Well near Mammoth Lakes, California. The well in Long Valley Caldera is planned to reach an ultimate depth of 20,000 feet or a bottomhole temperature of 500{degrees}C (whichever comes first). There will be four drilling phases, at least a year apart with scientific experiments in the wellbore between active drilling periods. Phase 1 drilling in 1989 was completed with 20 in. casing from surface to a depth of 2558 ft., and a 3.8 in. core hole was drilled below the shoe to a depth of 2754 in. Phase 2 included a 17-{1/2} in. hole out of the 20 in. shoe, with 13-3/8 in. casing to 6825 ft., and continuous wireline coring below that to 7588 ft. This document comprises a narrative log of the daily activities, the daily drilling reports, mud logger's reports, summary of drilling fluids used, and other miscellaneous records.

Finger, J.T.; Jacobson, R.D.

1992-06-01T23:59:59.000Z

230

Geothermal wells: the cost benefit of fracture stimulation estimated by the GEOCOM code. Final report  

DOE Green Energy (OSTI)

GEOCOM, a computer code that provides life cycle cost/benefit analysis of completion technologies applied to geothermal wells, is used to study fracture stimulation techniques. it is estimated that stimulation must increase flow by roughly tons per $100,000 in order to be cost effective. Typically, hydraulic fracturing costs $100,000 to $500,000 per well, and the attempts at stimulation to date have generally not achieved the desired flow increases. The cost effectiveness of hydraulic fracturing is considered for several geothermal reservoirs.

Brown, G.L.

1983-09-01T23:59:59.000Z

231

Session 18: Geothermal Well Stimulation - Program Summary and the Beowawe Field Experiment  

DOE Green Energy (OSTI)

Republic Geothermal, Inc. and its subcontractors have planned and executed laboratory studies and eight well stimulation field experiments under the Geothermal Reservoir Well Stimulation Program (GRWSP). The program, begun in February 1979, has concentrated on extending petroleum industry stimulation technology for use by the geothermal industry. The most recent experiment was in a naturally fractured Chevron well at Beowawe and involved an acid stimulation of a damaged interval which yielded a 2.3-fold increase in injectivity. Overall results to date have shown that stimulation is viable where adequate reservoirs are penetrated by wells encountering formation damage or locally tight formations. However, wells in marginal naturally fractured reservoirs have not been saved by the types of well stimulation jobs performed thus far. A recent discovery is that many wells can possibly be made outstanding producers by widening and propping compliant natural fractures. Confirmation of this constitutes unfinished business of the GRWSP, and offers one of the greatest potential opportunities for enhancing the economics of geothermal power production.

Verity, R.V.

1983-12-01T23:59:59.000Z

232

Testing geopressured geothermal reservoirs in existing wells. Annual report  

DOE Green Energy (OSTI)

This contract called for the acquisition and testing of Wells of Opportunity. Wells of Opportunity are located by screening published information on oil industry activity and through personal contacts with oil operators. This process resulted in recommendation of 21 candidate wells to the DOE for the WOO program. Of the 21 wells recommended, 7 were accepted. Six of these 7 were acquired for testing. Three wells have been tested, and the fourth and fifth will be tested early in 1981. Preliminary test results are briefly described and are shown in a table. The actual testing schedule and the originally proposed schedule matched very closely. Cumulative costs through November 1980 were approximately $6.5 million and compare to an estimate of $8.5 million for the same period. A graphical comparison of actual versus estimated costs is given.

Not Available

1980-01-01T23:59:59.000Z

233

Navy Geothermal Plan  

SciTech Connect

Domestic geothermal resources with the potential for decreasing fossil fuel use and energy cost exist at a significant number of Navy facilities. The Geothermal Plan is part of the Navy Energy R and D Program that will evaluate Navy sites and provide a technical, economic, and environmental base for subsequent resource use. One purpose of the program will be to provide for the transition of R and D funded exploratory efforts into the resource development phase. Individual Navy geothermal site projects are described as well as the organizational structure and Navy decision network. 2 figs.

1984-12-01T23:59:59.000Z

234

Gulf Coast Programmatic Environmental Assessment Geothermal Well Testing: The Frio Formation of Texas and Louisiana  

DOE Green Energy (OSTI)

In accordance with the requirements of 10 CFR Part 711, environmental assessments are being prepared for significant activities and individual projects of the Division of Geothermal Energy (DGE) of the Energy Research and Development Administration (ERDA). This environmental assessment of geopressure well testing addresses, on a regional basis, the expected activities, affected environments, and possible impacts in a broad sense. The specific part of the program addressed by this environmental assessment is geothermal well testing by the take-over of one or more unsuccessful oil wells before the drilling rig is removed and completion of drilling into the geopressured zone. Along the Texas and Louisiana Gulf Coast (Plate 1 and Overlay) water at high temperatures and high pressures is trapped within Gulf basin sediments. The water is confined within or below essentially impermeable shale sequences and carries most or all of the overburden pressure. Such zones are referred to as geopressured strata. These fluids and sediments are heated to abnormally high temperatures (up to 260 C) and may provide potential reservoirs for economical production of geothermal energy. The obvious need in resource development is to assess the resource. Ongoing studies to define large-sand-volume reservoirs will ultimately define optimum sites for drilling special large diameter wells to perform large volume flow production tests. In the interim, existing well tests need to be made to help define and assess the resource. The project addressed by this environmental assessment is the performance of a geothermal well test in high potential geothermal areas. Well tests involve four major actions each of which may or may not be required for each of the well tests. The four major actions are: site preparation, drilling a salt-water disposal well, actual flow testing, and abandonment of the well.

None

1977-10-01T23:59:59.000Z

235

Environmental monitoring at designed geopressured-geothermal well sites, Louisiana and Texas  

DOE Green Energy (OSTI)

The research objectives of this report are to: implement and maintain the ongoing environmental monitoring program around DOE geopressured-geothermal test wells in Louisiana and Texas; analyze and interpret collected data for evidence of subsidence and induced microearthquakes which may be brought about by geopressured-geothermal well testing and development; continue geological-geophysical studies of the Hulin and Gladys McCall sites incorporating new seismic data; continue review of previously identified and tested geopressured-geothermal prospects in Louisiana to determine if any link exists between such reservoirs and the existence of free gas in commercial or subcommercial quantities; and initiate review of geology, co-location and properties of geopressured brines with medium and heavy oil reservoirs in Louisiana utilizing existing maps, databases, reports, and journal articles. 2 figs.

Not Available

1991-01-01T23:59:59.000Z

236

Environmental monitoring at designed geopressured-geothermal well sites, Louisiana and Texas  

DOE Green Energy (OSTI)

The research objectives of this report are to: implement and maintain the ongoing environmental monitoring program around DOE geopressured-geothermal test well in Louisiana and Texas; analyze and interpret collected data for evidence of subsidence and induced microearthquakes which may be brought about by geopressured-geothermal well testing and development; continue geological-geophysical studies of the Hulin and Gladys McCall sites incorporating new seismic data; continue review of previously identified and tested geopressured-geothermal prospects in Louisiana to determine if any link exists between such reservoirs and the existence of free gas in commercial or subcommercial quantities; and initiate review of geology, co-location and properties of geopressured brines with medium and heavy oil reservoirs in Louisiana utilizing existing maps, databases, reports, and journal articles.

Groat, C.; Stevenson, D.

1990-01-01T23:59:59.000Z

237

Power Potential of Geothermal Wells Related to Reservoir Temperature  

DOE Green Energy (OSTI)

For equal flows of hot water wells, the electric power which can be generated increases with feed water temperature. However, high temperature wells discharge greater flows than that of lower temperature wells of similar permeability, with the result of enhanced power potential. In fact, where fluids are exploited utilizing two-stage flash, these factors combine to give a power potential which is proportional to the cube of the feed water temperature in degrees celsius. Hence a feed of 315 C would generate twice the power of that of water at 250 C for wells of good permeability and where the reservoir exists under conditions of boiling point with depth. Higher temperature water (exceeding 300 C) has, however, a commensurate higher tendency to mineral deposition in reinjection water lines and this disposes design to single-stage flash with slightly reduced power, compared with the two-stage alternative.

James, Russell

1986-01-21T23:59:59.000Z

238

Geopressured-geothermal well report. Volume I. Drilling and completion  

DOE Green Energy (OSTI)

Gladys McCall site activities are covered through the completion of the test well and salt water disposal well. The test well was drilled to a total depth of 16,510 feet, then plugged back to 15,831 feet. Three 4'' diameter diamond cores were taken for analysis. An existing well on site, the Getty-Butts Gladys McCall No. 1, was reentered and completed to a depth of 3514 feet as a salt water disposal well. The geologic interpretation of the Gladys McCall site indicated target sands for testing at 15,080 feet through 15, 831 feet. Reservoir fluid temperature at this depth is estimated to be approximately 313/sup 0/F and pressure is estimated to be +-12,800 psi. The preliminary reservoir volume estimate is 3.6 billion barrels of brine. The design wells program includes environmental monitoring of the Gladys McCall site by Louisiana State University. Field stations are set up to monitor surface and ground water quality, subsidence, land loss and shoreline erosion, and seismicity. As of December 31, 1981 the study shows no significant impact on the environment by site operations.

Not Available

1982-01-01T23:59:59.000Z

239

WELCST: engineering cost model of geothermal wells. Description and user's guide  

DOE Green Energy (OSTI)

WELCST, a FORTRAN code for estimating the effects of R and D project results upon the future cost of geothermal wells is described. The code simulates the drilling and completion of a well at 27 specific US geothermal prospects, given assumptions about well design and casing plan, formation drillability, and selected engineering and cost characteristics of today's drilling technology. The user may change many of the assumptions about engineering and cost characteristics to allow WELCST to simulate impacts of specific R and D projects on the estimated cost of wells at the prospects. An important capability of WELCST is that it simulates rates and costs of major drilling mishaps, based on drilling incident data from the Imperial Valley and Geysers geothermal fields. WELCST is capable of estimating geothermal well costs at liquid-dominated (hydrothermal) sites, vapor-dominated sites, geopressured sites, and Hot Dry Rock sites. The model can contribute to many system-optimization studies, and could be easily adapted to estimate well costs outside of the United States.

Entingh, D.J.; Lopez, A.

1979-02-01T23:59:59.000Z

240

The Marysville, Montana, Geothermal Project: Environmental Analysis of the Deep Geothermal Research Well  

DOE Green Energy (OSTI)

The objective of this research project is to investigate a geothermal anomaly of high heat flow discovered in 1969 in central Montana, and to determine how this natural resource might be developed as a source of useful energy. Under Phase I, the natural resource will be explored, drilled, and modeled at an estimated cost of $2,588,935 over a 3-year period. Phase II, depending upon the nature of the heat source, will be developing the resource under a cooperative effort of government and private industry. This environmental analysis is intended to cover the drilling and logging operations noted under Phase I, the only work being undertaken at this time. As can be seen from Figure 1, further tests may be run at this site in later phases of the study. But since the nature of these tests are highly dependent on the results of Phase I, it is not considered productive to speculate on their environmental impact. As is show, however, any later experiments would cover a range of underground experiments, some of which consume water and others which would produce water. Before a meaningful analysis of such work can be written, it will be necessary to analyze the results of Phase I findings.

None

1973-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Geothermal reservoir well stimulation program. Final program summary report  

DOE Green Energy (OSTI)

Eight field experiments and the associated theoretical and laboratory work performed to develop the stimulation technology are described. A discussion of the pre-stimulation and post-stimulation data and their evaluation is provided for each experiment. Overall results have shown that stimulation is viable where adequate reservoirs are penetrated by wells encountering formation damage or locally tight formation zones. Seven of the eight stimulation experiments were at least technically successful in stimulating the wells. The two fracture treatments in East Mesa 58-30 more than doubled the producing rate of the previously marginal producer. The two fracture treatments at Raft River and the two at Baca were all successful in obtaining significant production from previously nonproductive intervals. However, these treatments failed to establish commercial production due to deficiencies in either fluid temperature or reservoir transmissivity. The Beowawe chemical stimulation treatment appears to have significantly improved the well's injectivity, but production data were not obtained because of well mechanical problems. The acid etching treatment in the well at the Geysers did not have any material effect on producing rate. Evaluations of the field experiments to date have suggested improvements in treatment design and treatment interval selection which offer substantial encouragement for future stimulation work.

Not Available

1984-01-01T23:59:59.000Z

242

Hulin Geopressure-geothermal test well: First order levels  

DOE Green Energy (OSTI)

The purpose of this survey was to level through and establish elevations for existing benchmarks along LA Highway No. 685 from Erath, Louisiana south to the well site. The leveling was performed in April 1991, and was accomplished using procedures and equipment identical to that used by the National Geodetic Survey for First Order Class I Leveling. The leveling began on benchmark NGS T-361 located in Erath, Louisiana and the published elevation of 5.271 feet was used for this survey. On this survey a new benchmark, HU-18 was set on a concrete slab in the well site to observe the subsidence of the ground surface. Also, benchmark No.8 could not be found. A two hour search was made with no results. At this leveling it was noted that an error was made. A metric D.E. was used for the well head elevation instead of feet. This error has been corrected in this report.

None

1991-04-01T23:59:59.000Z

243

Testing geopressured geothermal reservoirs in existing wells. Wells of Opportunity Program final contract report, 1980-1981  

DOE Green Energy (OSTI)

The geopressured-geothermal candidates for the Wells of Opportunity program were located by the screening of published information on oil industry activity and through direct contact with the oil and gas operators. This process resulted in the recommendation to the DOE of 33 candidate wells for the program. Seven of the 33 recommended wells were accepted for testing. Of these seven wells, six were actually tested. The first well, the No. 1 Kennedy, was acquired but not tested. The seventh well, the No. 1 Godchaux, was abandoned due to mechanical problems during re-entry. The well search activities, which culminated in the acceptance by the DOE of 7 recommended wells, were substantial. A total of 90,270 well reports were reviewed, leading to 1990 wells selected for thorough geological analysis. All of the reservoirs tested in this program have been restricted by one or more faults or permeability barriers. A comprehensive discussion of test results is presented.

Not Available

1982-01-01T23:59:59.000Z

244

Investigation and evaluation of geopressured-geothermal wells. Final report  

DOE Green Energy (OSTI)

This well was approved for reentry and test operations after consideration of a number of reentry prospects in Cameron Parish. This was a marsh location that required 2.3 miles of board road and replacement of two bridges. Road work was commenced on June 19, 1978, and site preparation was completed on October 25. The drilling rig moved on location on November 2. This rig was released on December 16. Reentry operations were completely unsuccessful because of failure to effect a tieback of the 7'' casing. The plugging and abandonment records filed with the Louisiana Department of Conservtion indicated that the top of the 7'' casing was at or near the base of the 10-3/4'' casing when the well was plugged. These records did not specify that the 7'' casing had been dynamited one or more times during the recovery operation. Numerous attempts were made to locate and condition the 7'' casing for tying back to the surface. All these were unsuccessful. The top of the 7'' casing was never clearly located, or if located was subsequently lost, and therefore it was not possible to cut and recover the damaged section in order to effect a tieback. The total cost of the attempted reentry was approximately $1,925,000. Of this amount, some $444,000 was spent on road and site preparation and disposal well. This expenditure can be salvaged in the event a decision is made to redrill the well.

Dobson, R.J.; Hartsock, J.H.; Willits, M.H.

1979-01-01T23:59:59.000Z

245

Hydrologic properties of the Dixie Valley, Nevada, geothermal reservoir from well-test analyses  

DOE Green Energy (OSTI)

Temperature, pressure, and spinner (TPS) logs have been recorded in several wells from the Dixie Valley Geothermal Reservoir in west central Nevada. A variety of well-test analyses has been performed with these data to quantify the hydrologic properties of this fault-dominated geothermal resource. Four complementary analytical techniques were employed, their individual application depending upon availability and quality of data and validity of scientific assumptions. In some instances, redundancy in methodologies was used to decouple interrelated terms. The methods were (1) step-drawdown, variable-discharge test; (2) recovery analysis; (3) damped-oscillation response; and (4) injection test. To date, TPS logs from five wells have been examined and results fall into two distinct categories. Productive, economically viable wells have permeability-thickness values on the order of 10{sup 5} millidarcy-meter (mD-m) and storativities of about 10{sup {minus}3}. Low-productivity wells, sometimes located only a few kilometers from their permeable counterparts, are artesian and display a sharp reduction in permeability-thickness to about 10 mD-m with storativities on the order of 10{sup {minus}4}. These results demonstrate that the hydrologic characteristics of this liquid-dominated geothermal system exhibit a significant spatial variability along the range-bounding normal fault that forms the predominant aquifer. A large-scale, coherent model of the Dixie Valley Geothermal Reservoir will require an understanding of the nature of this heterogeneity and the parameters that control it.

Morin, R.H. [Geological Survey, Denver, CO (United States); Hickman, S.H. [Geological Survey, Menlo Park, CA (United States); Barton, C.A. [Stanford Univ., CA (United States). Dept. of Geophysics; Shapiro, A.M. [Geological Survey, Reston, VA (United States); Benoit, W.R. [Oxbow Geothermal Corp., Reno, NV (United States); Sass, J.H. [Geological Survey, Flagstaff, AZ (United States)

1998-08-01T23:59:59.000Z

246

Investigation and evaluation of geopressured-geothermal wells. Summary of Gruy Federal's Well-of-Opportunity Program to January 31, 1980  

Science Conference Proceedings (OSTI)

Scouting and monitoring techniques peculiar to geopressured-geothermal wells and legal problems are presented. The following are tabulated: priority wells actively monitored, industry contacts, and the summary of industry responses to well-or-opportunity solicitation. (MHR)

Not Available

1980-03-01T23:59:59.000Z

247

Final Scientific - Technical Report, Geothermal Resource Exploration  

Open Energy Info (EERE)

Scientific - Technical Report, Geothermal Resource Exploration Scientific - Technical Report, Geothermal Resource Exploration Program, Truckhaven Area, Imperial County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Final Scientific - Technical Report, Geothermal Resource Exploration Program, Truckhaven Area, Imperial County, California Details Activities (5) Areas (1) Regions (0) Abstract: With financial support from the U.S. Department of Energy (DOE), Layman Energy Associates, Inc. (LEA) has completed a program of geothermal exploration at the Truckhaven area in Imperial County, California. The exploratory work conducted by LEA included the following activities: compilation of public domain resource data (wells, seismic data, geologic maps); detailed field geologic mapping at the project site; acquisition and

248

Newberry exploratory slimhole  

DOE Green Energy (OSTI)

During July-November, 1995, Sandia National Laboratories, in cooperation with CE Exploration, drilled a 5,360 foot exploratory slimhole (3.85 inches diameter) in the Newberry Known Geothermal Resource Area (KGRA) near Bend, Oregon. This well was part of Sandia`s program to evaluate slimholes as a geothermal exploration tool. During and after drilling the authors performed numerous temperature logs, and at the completion of drilling attempted to perform injection tests. In addition to these measurements, the well`s data set includes: over 4,000 feet of continuous core (with detailed log); daily drilling reports from Sandia and from drilling contractor personnel; daily drilling fluid record; and comparative data from other wells drilled in the Newberry KGRA.

Finger, J.T.; Jacobson, R.D.

1997-01-01T23:59:59.000Z

249

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of The Watkins-Miller No. 1 Well, Cameron Parish, Louisiana  

DOE Green Energy (OSTI)

This Gruy Federal Type II-B prospect was drilled as the Superior Oil Company No. 1 Watkins-Miller, API designation 17-023-20501 and is located in Section 5, T15S, R5W, Cameron Parish, Louisiana. The well site is just north of lot 39 on Indian Point Island and is readily accessible from state highway Route 82 and a shell road in good condition. Superior Oil completed this well in late 1970 as a dual gas producer in sands between 11,150 and 11,250 feet but eventually abandoned the well in December, 1974. The cellar of the well is still visible on the site. This location is shown on the lower portion of USGS topographic sheet ''Grand Lake West'' in the map pocket of the Gruy Federal report ''Investigation and Evaluation of Geopressured-Geothermal Wells, Prospective Test Wells in the Texas and Louisiana Gulf Coast'', February 28, 1978.

None

1978-04-13T23:59:59.000Z

250

Geothermal-Reservoir Well-Stimulation Program. Program status report  

DOE Green Energy (OSTI)

Seven experimental fracture stimulation treatments completed to date and the laboratory work performed to develop the stimulation technology are described. A discussion of the pre-stimulation and post-stimulation data and their evaluation is provided for each experiment. Six of the seven stimulation experiments were at least technically successful in stimulating the wells. The two fracture treatments in East Mesa 58-30 more than doubled the producing rate of the previously marginal producer. The two fracture treatments in Raft River and the two in Baca were all successful in obtaining significant production from previously nonproductive intervals. However, these treatments failed to establish commercial production due to deficiencies in either fluid temperature or flow rate. The acid etching treatment in the well at The Geysers did not have any material effect on producing rate.

Not Available

1982-05-01T23:59:59.000Z

251

Geothermal Reservoir Dynamics - TOUGHREACT  

E-Print Network (OSTI)

Swelling in a Fractured Geothermal Reservoir, presented atTHC) Modeling Based on Geothermal Field Data, Geothermics,and Silica Scaling in Geothermal Production-Injection Wells

2005-01-01T23:59:59.000Z

252

Behavioral design to model a reactive decision of an expert in geothermal wells  

Science Conference Proceedings (OSTI)

Software design based on agents represents a new perspective for computer science and more specifically, for Artificial Intelligence. It is a new theory that has innovated the analysis, design and implementation of system software. The design of agents ... Keywords: Artificial Intelligence, Autonomous action, Behavioral analysis, Cognitive models, Geothermal wells, Inverse problem, Multi-agent architecture, Reactive agents, Subjective domain, Temperature formation

Ana Lilia Laureano-Cruces; Gilberto Espinosa-Paredes

2005-04-01T23:59:59.000Z

253

Environmental Assessment: Geothermal Energy Geopressure Subprogram. Gulf Coast Well Testing Activity, Frio Formation, Texas and Louisiana  

DOE Green Energy (OSTI)

This Environmental Assessment (EA) has been prepared to provide the environmental input into the Division of Geothermal Energy's decisions to expand the geothermal well testing activities to include sites in the Frio Formation of Texas and Louisiana. It is proposed that drilling rigs be leased before they are removed from sites in the formation where drilling for gas or oil exploration has been unsuccessful and that the rigs be used to complete the drilling into the geopressured zone for resource exploration. This EA addresses, on a regional basis, the expected activities, affected environment, and the possible impacts in a broad sense as they apply to the Gulf Coast well testing activity of the Geothermal Energy Geopressure Subprogram of the Department of Energy. Along the Texas and Louisiana Gulf Coast (Plate 1 and Overlay, Atlas) water at high temperatures and high pressures is trapped within Gulf basin sediments. The water is confined within or below essentially impermeable shale sequences and carries most or all of the overburden pressure. Such zones are referred to as geopressured strata. These fluids and sediments are heated to abnormally high temperatures (up to 260 C) and may provide potential reservoirs for economical production of geothermal energy. The obvious need in resource development is to assess the resource. Ongoing studies to define large-sand-volume reservoirs will ultimately define optimum sites for drilling special large diameter wells to perform large volume flow production tests. in the interim, existing well tests need to be made to help define and assess the resource.

None

1978-02-01T23:59:59.000Z

254

Geothermal-well completions: a survey and technical evaluation of existing equipment and needs  

DOE Green Energy (OSTI)

The geothermal environment and associated well completion problems are reviewed. Existing well completion equipment is surveyed and limitations are identified. A technical evaluation of selected completion equipment is presented. The technical evaluation concentrates on well cementing equipment and identifies potential failure mechanisms which limit the effectiveness of these tools. Equipment employed in sand control, perforating, and corrosion control are identified as potential subjects for future technical evaluation.

Nicholson, J.E.; Snyder, R.E.

1982-07-01T23:59:59.000Z

255

Testing geopressured geothermal reservoirs in existing wells: Detailed completion prognosis for geopressured-geothermal well of opportunity, prospect #7  

DOE Green Energy (OSTI)

This book is a detailed prognosis covering the acquisition, completion, drilling, testing and abandonment of the Frank A. Godchaux, III, Well No. 1 under the Wells of Opportunity Program. The well is located approximately 12 miles southeast of the city of Abbeville, Louisiana. Eaton Operating Company proposes to test a section of the Planulina sand at a depth ranging from 15,584 to 15,692 feet. The reservoir pressure is estimated to be 14,480 psi and the temperature of the formation water is expected to be 298 F. The water salinity is calculated to be 75,000 ppm. The well is expected to produce 20,000 barrels of water per day with a gas content of 44 standard cubic feet pre barrel. The well was acquired from C and K Petroleu, Inc. on March 20, 1981. C and K abandoned the well at a total depth of 16,000 feet. The well has a 7-5/8 inches liner set at 13,387 feet. Eaton proposes to set 5-1/2 inch casing at 16,000 feet and produce the well through the casing using a 2-3/8 inch tubing string for wireline protection and for pressure control. A 4,600 foot saltwater disposal well will be drilled on the site and testing will be conducted similar to previous Eaton tests. The total estimated cost to perform the work is $2,959,000. An optional test from 14,905 to 15,006 feet may be performed after the original test and will require a workover with a rig on location to perform the plugback. The surface production equipment utilized on previous Eaton WOO tests will be utilized on this test. This equipment has worked satisfactorily and all parties involved in the testing are familiar with its operation. The Institute of Gas Technology and Mr. Don Clark will handle the sampling and testing and reservoir evaluation, respectively, as on the previous Eaton tests.

Godchaux, Frank A.

1981-06-01T23:59:59.000Z

256

Preliminary petrographic and geophysical interpretations of the exploratory geothermal drill hole and core, Redstone, New Hampshire  

DOE Green Energy (OSTI)

A 3000 foot diamond drill hole was drilled in the Conway Granite in Redstone, New Hampshire. A comprehensive detailed petrographic and physical study of this core was made. The purpose of this study is to supply a sound data base for future geothermal and uranium-thorium studies of the drill core. An estimate of the heat flow potential of the Redstone drill hole gives a heat flow of 1.9 HFU. If only the red phase of the Conway Granite had been intersected the heat flow may have been as much as 2.7 HFU, reaching a temperature of 260/sup 0/C at 6 km. The drill hole intersected four lithologies; the green and red phase of the Conway Granite, the Albany quartz syenite and a medium-grained, hastingsite-biotite granite. The red phase has the highest and most irregular radioactivity. The irregularity is mainly due to minor variations in lithology. The drill core intersected several alteration zones up to a thickness of 150 feet. These alteration zones represent passage of low to medium temperature fluids which might have been mineralized. The Conway Granite has the physical and chemical characteristics necessary for the formation of vein type uranium deposits. The presence of unexplained radiometric anomalies lends support to the existence of such deposits.

Hoag, R.B. Jr.; Stewart, G.W.

1977-06-30T23:59:59.000Z

257

Results of investigations at the Zunil geothermal field, Guatemala: Well logging and brine geochemistry  

DOE Green Energy (OSTI)

The well logging team from Los Alamos and its counterpart from Central America were tasked to investigate the condition of four producing geothermal wells in the Zunil Geothermal Field. The information obtained would be used to help evaluate the Zunil geothermal reservoir in terms of possible additional drilling and future power plant design. The field activities focused on downhole measurements in four production wells (ZCQ-3, ZCQ-4, ZCQ-5, and ZCQ-6). The teams took measurements of the wells in both static (shut-in) and flowing conditions, using the high-temperature well logging tools developed at Los Alamos National Laboratory. Two well logging missions were conducted in the Zunil field. In October 1988 measurements were made in well ZCQ-3, ZCQ-5, and ZCQ-6. In December 1989 the second field operation logged ZCQ-4 and repeated logs in ZCQ-3. Both field operations included not only well logging but the collecting of numerous fluid samples from both thermal and nonthermal waters. 18 refs., 22 figs., 7 tabs.

Adams, A.; Dennis, B.; Van Eeckhout, E.; Goff, F.; Lawton, R.; Trujillo, P.E.; Counce, D.; Archuleta, J. (Los Alamos National Lab., NM (USA)); Medina, V. (Instituto Nacional de Electrificacion, Guatemala City (Guatemala). Unidad de Desarollo Geotermico)

1991-07-01T23:59:59.000Z

258

Research and development of improved geothermal well logging techniques, tools and components (current projects, goals and status). Final report  

DOE Green Energy (OSTI)

One of the key needs in the advancement of geothermal energy is availability of adequate subsurface measurements to aid the reservoir engineer in the development and operation of geothermal wells. Some current projects being sponsored by the U. S. Department of Energy's Division of Geothermal Energy pertaining to the development of improved well logging techniques, tools and components are described. An attempt is made to show how these projects contribute to improvement of geothermal logging technology in forming key elements of the overall program goals.

Lamers, M.D.

1978-01-01T23:59:59.000Z

259

Deep drilling data Raft River geothermal area, Idaho | Open Energy  

Open Energy Info (EERE)

drilling data Raft River geothermal area, Idaho drilling data Raft River geothermal area, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Deep drilling data Raft River geothermal area, Idaho Details Activities (2) Areas (1) Regions (0) Abstract: Stratigraphy and geophysical logs of three petroleum test boreholes in the Raft River Valley are presented. The geophysical logs include: temperature, resistivity, spontaneous potential, gamma, caliper, and acoustic logs. Author(s): Oriel, S. S.; Williams, P. L.; Covington, H. R.; Keys, W. S.; Shaver, K. C. Published: DOE Information Bridge, 1/1/1978 Document Number: Unavailable DOI: 10.2172/6272996 Source: View Original Report Exploratory Well At Raft River Geothermal Area (1975) Exploratory Well At Raft River Geothermal Area (1976) Raft River Geothermal Area

260

Impact of common completion and workover activities on the effective costs of geothermal wells  

DOE Green Energy (OSTI)

The impacts of completion practices on production and maintenance costs are considered. To evaluate alternative completion and workover technologies, a simple model has been developed that compares total well cost to total production or injection. The model is discussed briefly and results from its application to different completion and workover strategies are emphasized. The model development project had three aspects: (1) the establishment of a data base for the cost and effectiveness of various geothermal completion and workover activities; (2) the development of a computer model to specific cases. The data collected include geothermal production characteristics; initial costs and completion practices for representatives wells; estimated costs and effectiveness of common workover equipment and operations; the frequencies of and times required to perform workovers; etc. The model facilitates comparisons of completion and workover alternatives. The results discussed include an analysis of the impact of variations in well lifetime. A comparison of mechanical descaling of geothermal wells to chemical scale inhibition indicates that for certain conditions chemical inhibition is more cost effective. Results of an analysis of injectivity decline are also presented, as are studies of original well cost, initial flow, and productivity decline for production wells. Other results involving underreaming, changing casing profiles, perforating, and hydraulic fracturing are also discussed.

Carson, C.C.; Mansure, A.J.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Single-Well Enhanced Geothermal System Front-End Engineering and Design: Optimization of a Renewable Geothermal System for Harvesting Heat from Hot, Dry Rock  

Science Conference Proceedings (OSTI)

In 2009, GTherm and the Thayer School of Engineering at Dartmouth College, under an EPRI Polaris grant, evaluated the potential for a GTherm single-well enhanced geothermal system (SWEGS) and bottom-hole HeatNest to produce enough heat from deep geothermal wells to be an effective alternative for generating electric power. The research focused on the thermodynamic properties of the SWEGS design and the optimal geologic conditions. The results indicated that, given the right conditions, the SWEGS can extr...

2011-08-12T23:59:59.000Z

262

Use of an acoustic borehole televiewer to investigate casing corrosion in geothermal wells  

DOE Green Energy (OSTI)

Corrosion of well and surface equipment due to the presence of hot, corrosive brines is one of the major problems facing geothermal operators. For wellbore casing, this problem is complicated by the fact that in-place inspection is difficult at best. In an attempt to improve this situation, a prototype acoustic borehole televiewer designed to operate in geothermal wells was used to study the corrosion damage to casing in three commercial wells. The results of this experiment were promising. The televiewer returns helped to define areas of major corrosion damage and to indicate the extent of the damage. This paper briefly discusses the corrosion problem, describes the acoustic borehole televiewer, and then summarizes the results of the field test of the televiewer's capability for investigating corrosion.

Carson, C.C.; Bauman, T.

1986-03-01T23:59:59.000Z

263

Geothermometry At Coso Geothermal Area (1978) | Open Energy Information  

Open Energy Info (EERE)

Geothermometry At Coso Geothermal Area (1978) Geothermometry At Coso Geothermal Area (1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Coso Geothermal Area (1978) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Geothermometry Activity Date 1978 Usefulness useful DOE-funding Unknown Exploration Basis Determine fluid origin in two exploratory wells Notes Collected water from original coso hot springs well (1967) and CGEH No. 1. and completed chemical analysis to determine fluid origin. The surface expression of fumarole and acid sulfate pools and shallow steam wells gives a false indication of an extensive vapor dominated system because upward convecting, boiling alkaline-chloride waters do not reach the surface.

264

Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary Formations  

Science Conference Proceedings (OSTI)

There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. Terralog USA, in collaboration with the University of California, Irvine (UCI), are currently investigating advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. This two-year research project, funded by the US Department of Energy, includes combined efforts for: 1) Resource characterization; 2) Small and large scale laboratory investigations; 3) Numerical simulation at both the laboratory and field scale; and 4) Engineering feasibility studies and economic evaluations. The research project is currently in its early stages. This paper summarizes our technical approach and preliminary findings related to potential resources, small-scale laboratory simulation, and supporting numerical simulation efforts.

Mike Bruno; Russell L. Detwiler; Kang Lao; Vahid Serajian; Jean Elkhoury; Julia Diessl; Nicky White

2012-09-30T23:59:59.000Z

265

Internal Technical Report, 1981 Annual Report, An Analysis of the Response of the Raft River Geothermal Site Monitor Wells  

Science Conference Proceedings (OSTI)

A groundwater monitoring program has been established on the Raft River Geothermal Site since 1978. The objective of this program is to document possible impacts that may be caused by geothermal production and injection on the shallow aquifers used for culinary and irrigation purposes. This annual progress report summarizes data from 12 monitor wells during 1981. These data are compared with long-term trends and are correlated with seasonal patterns, irrigation water use and geothermal production and testing. These results provide a basis for predicting long-term impacts of sustained geothermal production and testing. To date, there has been no effect on the water quality of the shallow aquifers.

Thurow, T.L.; Large, R.M.; Allman, D.W.; Tullis, J.A.; Skiba, P.A.

1982-04-01T23:59:59.000Z

266

Well Test Analysis and Improved Models for Geopressured-Geothermal Systems  

DOE Green Energy (OSTI)

In accordance with the S-CUBED Subcontract Work Statement, S-CUBED has concentrated on the synthesis, correlation and analysis of all pertinent data from the Department of Energy (DOE) geopressured-geothermal research wells undergoing testing during the contract period. This work has included the development of reservoir simulation models for the geopressured-geothermal resource in hydrological connection with each well. Existing S-CUBED simulation techniques have been applied to develop, update and improve the models for the reservoirs tested. During the contract period, data have been available from the Gladys McCall, Pleasant Bayou and Hulin test wells. S-CUBED has also contributed to the design of the well tests and participated in DOE's planning and review meetings in support of the geopressured-geothermal program. Detailed technical Topical Reports have been prepared and issued as appropriate during the contract period as referenced in the following summary of the work performed during the final year of the S-CUBED Subcontract to UTA.

Riney, T.D.

1990-12-01T23:59:59.000Z

267

Testing and sampling procedures for geothermal-compressured wells. Final report  

DOE Green Energy (OSTI)

Test wells to tap and sample geothermal-geopressured formations at 15,000 to 20,000 feet in the Gulf Coast area can be drilled routinely utilizing available equipment and methods. Electrical logs, surveys and fluid samplers can be used to obtain accurate and reliable information as to depths, temperatures, pressures, and fluid content of the geopressured formations before the well is completed. But it will be necessary to set casing and flow the well, at least temporarily, to secure fluid production volume and pressure data to evaluate the producibility of the geopressured resource. Electric logging and wireline survey methods are fully developed techniques for measuring the parameters needed to assess a geopressured zone before setting casing. Formation subsidence, though it may be slow to develop, can be measured during radioactivity tracer surveys. The following conclusions are drawn: existing well logging and surveying methods and equipment are generally satisfactory for testing and sampling a geothermal-geopressured resource; no significant areas of research are needed to predict, detect, and evaluate geopressured formations for their potential as geothermal resources. Static and dynamic testing procedures using existing technology are satisfactory to test, sample, and analyze a geopressured reservoir.

Boyd, W.E.

268

Hydrothermal cements for use in the completion of geothermal wells. Final report  

DOE Green Energy (OSTI)

A research program to develop an improved cement for use in high-temperature geothermal wells was carried out. The work involved in the selection and evaluation of an aluminum hydroxide-cured cement from the SwRI family of hydrothermal cements for this use are described. The physical testing program is described; the topics discussed include placement ability, compressive and bond strengths, permeability to water, compatibility to drilling muds, corrosion properties, and thermal properties.

Not Available

1979-09-01T23:59:59.000Z

269

Siting and drilling recommendations for a geothermal exploration well, Wendel-Amedee KGRA, Lassen County, California  

DOE Green Energy (OSTI)

All available exploration data relevant to the GeoProducts leasehold in the Wendel-Amedee KGRA are reviewed and interpreted. On the basis of this interpretation, locations and procedures are recommended for drilling geothermal production wells capable of supplying fluid at a temperature of 250/sup 0/F or greater. The following are covered: stratigraphy and geological history, geologic structure, geochemistry, geophysics, temperature-gradient data, and fluid quality. (MHR)

McNitt, J.R.; Wilde, W.R.

1980-12-01T23:59:59.000Z

270

A new void fraction correlation inferred from artificial neural networks for modeling two-phase flows in geothermal wells  

Science Conference Proceedings (OSTI)

A new empirical void fraction correlation was developed using artificial neural network (ANN) techniques. The artificial networks were trained using the backpropagation algorithm and production data obtained from a worldwide database of geothermal wells. ... Keywords: Artificial intelligence, Geothermal energy, Liquid holdup, Pressure gradients, Simulation, Statistics

A. lvarez del Castillo; E. Santoyo; O. Garc a-Valladares

2012-04-01T23:59:59.000Z

271

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of Gladys McCall No. 1 Well  

DOE Green Energy (OSTI)

This Gruy Federal Type III-A geopressured-geothermal (Geo) prospect was drilled as the Getty Oil Company and Buttes Gas and Oil Company, No.1 Gladys McCall. It is located in Section 27, Township 15S, Range 5W, Cameron Parish, Louisiana. The well is accessible by way of the original canal levee road, approximately 2 1/2 miles south of Louisiana State Route 82; one bridge must be replaced and a board road must be laid on the levee. Buttes completed this well in january, 1970, as a shut-in gas well through perforations from 11,924 to 11,928 feet. it was plugged and abandoned in April, 1970, without having produced. The location is shown on the north central area of the USGS topographic sheet ''Hog Bayou''. A portion of this sheet is included, which shows this well location as well as the State Lease 4183 Nos. 1 and 2 wells on the adjacent Rockefeller Wildlife Refuge and Game Preserve.

None

1978-06-16T23:59:59.000Z

272

The Cost Effectiveness of Fracture Stimulation in Increasing the Flow from Geothermal Wells  

SciTech Connect

The cost effectiveness of fracture stimulation at The Geysers, the Imperial Valley, and other geothermal resource areas in the United States vas studied using GEOCOM, a computer code for analyzing the impact of completion activities on the life-cycle costs of geothermal wells. Technologies for fracturing the reservoir near the wellbore involve the creation of a pressure pulse in the wellbore by means of either hydraulic or explosive force. The cost of a single fracture stimulation job can vary from $50,000 to over $500,000, with a typical cost of around $300,000. The code shows that additional flow achieved by fracture stimulation must exceed 10,000 pounds per hour for each $100,000 invested in stimulation in order for a fracture treatment to be cost effective. In some reservoirs, this additional flow must be as great as 30,000 pounds per hour. The cost effectiveness of fracturing has not yet been demonstrated in the field. The Geothermal Well Stimulation Program achieved an overall average of about 10,000 pounds per hour for each $100,000 invested.

Brown, Gerald L.

1983-12-15T23:59:59.000Z

273

Literature survey on cements for remediation of deformed casing in geothermal wells  

DOE Green Energy (OSTI)

Brookhaven National Laboratory was requested to conduct a literature survey for the best available cement to use in the proposed casing patch as part of the Geothermal Drilling Organization (GDO) project on remediation of deformed casings. A total of 50 wells have been identified with deformed production casing in Unocal`s portion of The Geysers geothermal field. A procedure to address the casing deformation and avoid abandonment of these wells has been developed as described in the Geysers Deformed Casing Remediation Proposal. The proposed remediation procedure involves isolation of the zone of interest with an inflatable packer, milling the deformed casing and cementing a 7 inch diameter liner to extend approximately 100 ft above and 100 ft below the milled zone. During the milling operation it is possible that the original cement and surrounding formation may slough away. In order to specify a suitable cement formulation for the casing patch it is first necessary to identify and understand the deformation mechanism/s operating in The Geysers field. Subsequently, the required cement mechanical properties to withstand further deformation of the repaired system must be defined. From this information it can be determined whether available cement formulations meet these requirements. In addition to The Geysers, other geothermal fields are at possible risk of casing deformation due to subsidence, seismic activity, lateral and vertical formation movement or other processes. Therefore, the proposed remediation procedure may have applications in other fields.

Allan, M.L.; Philippacopoulos, A.J.

1998-12-31T23:59:59.000Z

274

Three dimensional interpretations of single-well electromagnetic data for geothermal applications  

SciTech Connect

An efficient 3-D electromagnetic (EM) inversion algorithm has been developed for geothermal applications and tested successfully using a set of single-hole EM logging data. The data was collected at an oil field undergoing CO{sub 2} injection in southern California using a single-hole EM tool, Geo-BILT, developed by Electromagnetic Instruments, Inc (EMI). The tool is equipped with a multi-component source, and multi-component receivers at different separations. The inversion result provides a reasonable electrical conductivity image to a distance of 10 m from the well, and illustrates several zones with lateral conductivity variations that could not be resolved with traditional induction logging tools. The successful case study demonstrates potential applications of the tool and software for characterizing fracture systems in geothermal reservoirs.

Tseng, Hung-Wen; Lee, Ki Ha

2004-01-09T23:59:59.000Z

275

Unique aspects of drilling and completing hot-dry-rock geothermal wells  

DOE Green Energy (OSTI)

Drilling operations at the Fenton Hill Hot Dry Rock (HDR) Geothermal Test Site have led to numerous developments needed to solve the problems caused by a very harsh downhole environment. A pair of deep wells were drilled to approximately 15,000 ft (4.6 km); formation temperatures were in excess of 600/sup 0/F (300/sup 0/C). The wells were directionally drilled, inclined at 35/sup 0/, one above the other, in a direction orthogonal to the least principal stress field. The well site is near the flank of a young silicic composite volcano in the Jemez Mountains of northern New Mexico. The completion of this pair of wells is unique in reservoir development. The lower well was planned as a cold water injector which will be cooled by the introduced water from the static geothermal gradient to about 80/sup 0/F (25/sup 0/C). The upper well will be heated during production to over 500/sup 0/F (250/sup 0/C). The well pair is designed to perform as a closed loop heat-extraction system connected by hydraulic fractures with a vertical spacing of 1200 ft between the wells. These conditions strongly constrain the drilling technique, casing design, cement formulation, and cementing operations.

Carden, R.S.; Nicholson, R.W.; Pettitt, R.A.; Rowley, J.C.

1983-01-01T23:59:59.000Z

276

Report of the geophysical measurements in geothermal wells workshop, Airport Marina Hotel, Albuquerque, New Mexico, September 17--19, 1975  

SciTech Connect

This report presents results of a Workshop on Geophysical Measurements in Geothermal Wells, hosted in Albuquerque, September 17-19, by Sandia Laboratories and jointly sponsored by the United States Geological Survey and the Energy Research and Development Administration. During the workshop, tutorial papers dealing with the geothermal resource, geothermal logging, and high temperature technology were followed by working panel sessions. Three panels deliberated, respectively, well and reservoir parameters, log interpretation, and high temperature technology. In a final session, the reports of the panels were heard and discussed by the full workshop. A summary of the workshop conclusions and recommendations, as well as the complete panel statements, are presented. (auth)

Baker, L.E.; Baker, R.P.; Hughen, R.L.

1975-12-01T23:59:59.000Z

277

Flow in geothermal wells: Part III. Calculation model for self-flowing well  

DOE Green Energy (OSTI)

The theoretical model described predicts the temperature, pressure, dynamic dryness fraction, and void fraction along the vertical channel of two-phase flow. The existing data from operating wells indicate good agreement with the model. (MHR)

Bilicki, Z.; Kestin, J.; Michaelides, E.E.

1981-06-01T23:59:59.000Z

278

Category:Geothermal Development Phases | Open Energy Information  

Open Energy Info (EERE)

of 6 total. G GeothermalExploration GeothermalLand Use GeothermalLeasing GeothermalPower Plant GeothermalTransmission GeothermalWell Field Retrieved from "http:...

279

Improved geothermal well logging tools using no downhole electronics. Final report  

DOE Green Energy (OSTI)

A geothermal sonde for measuring temperature and pressure using no downhole electronics was designed and tested for operation at temperatures up to 275/sup 0/C (527/sup 0/F) and pressures of at least 10,000 psi. The measurement system uses variable resistance transducers which are powered in series by an uphole constant current supply. The output signals from the transducers are measured with a digital voltmeter having very high common mode and normal mode rejection ratios. The high rejection ratios of the digital voltmeter virtually eliminate any noise or pickup introduced into the measurement system. The system was tested in a hydroclave at temperatures up to 288/sup 0/C (550/sup 0/F) and at pressure up to 8,000 psi. The sonde was also tested in the Los Alamos geothermal well at temperatures up to 186/sup 0/C (366/sup 0/F) and pressures up to 4100 psi. The main problems encountered were associated with pressure transducers and the logging cable or the cable head and connector. The results of this project indicate that this is a feasible method of making geothermal measurements without the use of downhole electronics and that with further development the technique could be extended to higher temperatures and pressures.

Kratz, H.R.; Day, E.A.; Ginn, W.G.

1979-07-01T23:59:59.000Z

280

Well production casing Brady No. 5 well, Geothermal Food Processors, Inc. , Fernley, Nevada. Falure analysis report  

DOE Green Energy (OSTI)

Failure of the casing of the Brady No. 5 resulted from severe external corrosion. The well is located in a mineral flat and it is proposed that during wet periods the exterior of the casing was exposed to aerated saturated chloride and/or sulfate salt solutions. These solutions appear to have completely destroyed the surface conductor and upper string casing and associated cements. The production casing then corroded until mechanical failure occurred.

Ellis, P.F.

1979-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Feasibility investigation and design study of optical well logging methods for high temperature geothermal wells. Final report  

DOE Green Energy (OSTI)

The results are reported of a one-year program designed to investigate the feasibility of optical techniques applied to well-logging, to extend measurement capabilities in high-temperature geothermal boreholes. The basic concept is shown schematically. It makes use of a special armored cable containing fiber optic wave guides, connected to passive, downhole optical transducers. The latter modulate an optical carrier in response to borehole parameters. The optical carrier is a beam of infrared light transmitted from an optical source at the surface over an optical fiber. The modulated beam from the transducer is then returned to the surface over a second fiber, where conventional optical communications techniques are used to detect and decode the down hole information. (MHR)

Swanson, R.K.; Anderson, R.E.; Ash, J.I.; Beissner, R.E.; Smith, V.D.

1977-12-01T23:59:59.000Z

282

G. M. Koelemay well No. 1, Jefferson County, Texas. Volume I. Completion and testing: testing geopressured geothermal reservoirs in existing wells. Final report  

DOE Green Energy (OSTI)

The acquisition, completion, and testing of a geopressured-geothermal well are described. The following are covered: geology; petrophysics; re-entry and completion operations - test well; drilling and completion operations - disposal well; test objectives; surface testing facilities; pre-test operations; test sequence; test results and analysis; and return of wells and location to operator. (MHR)

Not Available

1980-01-01T23:59:59.000Z

283

Technical support for geopressured-geothermal well activities in Louisiana. Final report, 1 November 1983-31 October 1984  

DOE Green Energy (OSTI)

This report describes environmental monitoring of microseismic activity, land-surface subsidence, and surface and ground-water quality at three designed geopressured-geothermal test well sites in Louisiana. Separate abstracts have been prepared for individual sections. (ACR)

Not Available

1985-12-01T23:59:59.000Z

284

Technical support for geopressured-geothermal well activities in Louisiana. Annual report, 1 November 1982-31 October 1983  

DOE Green Energy (OSTI)

This annual report describes environmental monitoring of microseismic activity, land-surface elevations, and surface and ground-water quality at three designed geopressured-geothermal test well sites in Louisiana.

Not Available

1984-10-31T23:59:59.000Z

285

Well-bore effects in the analysis of two-phase geothermal well tests  

DOE Green Energy (OSTI)

A method of designing and analyzing pressure transient well tests of two-phase (steam-water) reservoirs is given. Wellbore storage is taken into account and the duration of it is estimated. It is shown that the wellbore flow can completely dominate the downhole pressure signal such that large changes in the downhole pressure that might be expected because of changes in kinematic mobility are not seen. Changes in the flowing enthalpy from the reservoir can interact with the wellbore flow so that a temporary plateau in the downhole transient curve is measured. Application of graphical and non-graphical methods to determine reservoir parameters from drawdown tests is demonstrated.

Miller, C.W.; Benson, S.; O'Sullivan, M.J.; Pruess, K.

1981-01-01T23:59:59.000Z

286

Utilization of melting techniques for borehole wall stabilization. [Applied to geothermal well production systems  

DOE Green Energy (OSTI)

A research program on the Subterrene concept based on excavation by melting has been completed. Theoretical and experimental studies were made for a broad range of applications. Most recently, a study of Subterrene deep geothermal well production systems predicted that, compared to rotary-drilled wells, significant cost savings are possible, e.g., 2 and 4 million dollars for 10-km-deep wells and geothermal gradients of 25 and 40 K/km, respectively. It was also concluded that for most wells the rate of penetration of the melting bits should be increased several times over that attained in the Subterrene tests. Subterrene melting penetration tests showed that borehole glass liners can be formed in a wide variety of materials and structural characterization tests showed that tuff glass cylinders can be many times stronger in compression than the parent material. Also, the tests showed that the rock-glass liner permeability decreases rapidly with confining pressure. New melting devices are conceivable that could line rotary-drilled boreholes with rock glass or other materials with resultant improvements in well costs. With emphasis on borehole liners, an overview of Subterrene program results, data on rock-glass liners, and suggestions on how molten materials might be applied to the borehole wall as part of a rotary drilling operation are presented.

Altseimer, J.H.

1977-01-01T23:59:59.000Z

287

Low-temperature geothermal water in Utah: A compilation of data for thermal wells and springs through 1993  

DOE Green Energy (OSTI)

The Geothermal Division of DOE initiated the Low-Temperature Geothermal Resources and Technology Transfer Program, following a special appropriation by Congress in 1991, to encourage wider use of lower-temperature geothermal resources through direct-use, geothermal heat-pump, and binary-cycle power conversion technologies. The Oregon Institute of Technology (OIT), the University of Utah Research Institute (UURI), and the Idaho Water Resources Research Institute organized the federally-funded program and enlisted the help of ten western states to carry out phase one. This first phase involves updating the inventory of thermal wells and springs with the help of the participating state agencies. The state resource teams inventory thermal wells and springs, and compile relevant information on each sources. OIT and UURI cooperatively administer the program. OIT provides overall contract management while UURI provides technical direction to the state teams. Phase one of the program focuses on replacing part of GEOTHERM by building a new database of low- and moderate-temperature geothermal systems for use on personal computers. For Utah, this involved (1) identifying sources of geothermal date, (2) designing a database structure, (3) entering the new date; (4) checking for errors, inconsistencies, and duplicate records; (5) organizing the data into reporting formats; and (6) generating a map (1:750,000 scale) of Utah showing the locations and record identification numbers of thermal wells and springs.

Blackett, R.E.

1994-07-01T23:59:59.000Z

288

LITERATURE SURVEY ON CEMENTS FOR REMEDIATION OF DEFORMED CASING IN GEOTHERMAL WELLS  

DOE Green Energy (OSTI)

Brookhaven National Laboratory was requested to conduct a literature survey for the best available cement to use in the proposed casing patch as part of the Geothermal Drilling Organization (GDO) project on remediation of deformed casings. A total of 50 wells has been identified with deformed production casing in Unocal's portion of The Geysers geothermal field. Reduced internal diameter and casing doglegs result in lost production and the possible need for abandonment. The cause of the deformations is believed to be formation movement along fault planes and/or along weaker layers or interfaces between high impedance contrast media. Apparently, it is unclear whether shear or axial compression is the dominant failure mechanism. A procedure to address the casing deformation and avoid abandonment of these wells has been developed as described in the Geysers Deformed Casing Remediation Proposal. The proposed remediation procedure involves isolation of the zone of interest with an inflatable packer, milling the deformed casing and cementing a 7 inch diameter liner to extend approximately 100 ft above and 100 ft below the milled zone. During the milling operation it is possible that the original cement and surrounding formation may slough away. In order to specify a suitable cement formulation for the casing patch it is first necessary to identify and understand the deformation mechanism/s operating in The Geysers field. Subsequently, the required cement mechanical properties to withstand further deformation of the repaired system must be defined. From this information it can be determined whether available cement formulations meet these requirements. In addition to The Geysers, other geothermal fields are at possible risk of casing deformation due to subsidence, seismic activity, lateral and vertical formation movement or other processes. Therefore, the proposed remediation procedure may have applications in other fields. The literature survey focused on published properties for cements used in geothermal and oil well applications and the experiences of well casing deformation occurring in oil and gas fields. Dr. Mike Bruno of Terralog Technologies kindly supplied a reference list from the DEA (Drilling Engineering Association) 99 Project on Analysis of Well Casing Damage Induced by Reservoir Compaction and Overburden Shear.

ALLAN,M.L.; PHILIPPACOPOULOS,A.J.

1998-11-01T23:59:59.000Z

289

Numerical simulation study of silica and calcite dissolution around a geothermal well by injecting high pH solutions with chelating agent.  

E-Print Network (OSTI)

transport modeling of injection well scaling and acidizingto a field geothermal injection well system, to investigateespecially near the injection well. CALCITE DISSOLUTION

Xu, Tianfu

2009-01-01T23:59:59.000Z

290

Space age telemetry for geothermal well logging: the wireline transmission link  

DOE Green Energy (OSTI)

The development of aerospace telemetry has opened new communication data links for making measurements in deep boreholes in the earth's crust. However, now a transmission line must be used since high-frequency signals will not propagate through this medium. Further restrictions are imposed upon well-logging transmission lines in high-temperature boreholes. It is possible to extend the bandwidth and number of data channels to enhance measurements in geothermal boreholes by combining aerospace telemetry techniques with thermal protection systems and careful selection of wireline data transmission configurations. 5 refs., 2 figs.

Kolar, J.D.; Dennis, B.R.; Stephani, E.L.; Gutierrez, P.

1985-01-01T23:59:59.000Z

291

Closed-loop flow test Miravalles Geothermal Field well log results  

DOE Green Energy (OSTI)

The Instituto Costarricense de Electricidad (ICE) conducted a closed-loop flow test in the Miravalles Geothermal Field. The closed-loop test was started in May and ran through August of 1990. The effluent from the production well PG-11 was carried by a pipeline through a monitor station to the injection well PG-2. Before starting the long-term flow test in May, cold-water injection experiments were performed in each well to determine the pressure and temperature response. A series of downhole measurements were made in each well to obtain background information. The downhole measurements were repeated in August just before terminating the flow test to evaluate the results.

Dennis, B.; Eden, G.; Lawton, R.

1992-01-01T23:59:59.000Z

292

Two-dimensional simulation of the Raft River geothermal reservoir and wells. [SINDA-3G program  

DOE Green Energy (OSTI)

Computer models describing both the transient reservoir pressure behavior and the time dependent temperature response of the wells at the Raft River, Idaho, Geothermal Resource were developed. A horizontal, two-dimensional, finite-difference model for calculating pressure effects was constructed to simulate reservoir performance. Vertical, two-dimensional, finite-difference, axisymmetric models for each of the three existing wells at Raft River were also constructed to describe the transient temperature and hydraulic behavior in the vicinity of the wells. All modeling was done with the use of the thermal hydraulics computer program SINDA-3G. The models are solved simultaneously with one input deck so that reservoir-well interaction may occur. The model predicted results agree favorably with the test data.

Kettenacker, W.C.

1977-03-01T23:59:59.000Z

293

Louisiana Gulf Coast seismicity induced by geopressured-geothermal well development  

DOE Green Energy (OSTI)

Continuous microseismic monitoring networks have been established around three US Department of Energy geopressured-geothermal design wells in southwestern Louisiana since summer 1980 to assess the effects well development may have on subsidence and growth fault activation. The results obtained from this monitoring have shown several unusual characteristics associated with Gulf Coast seismic activity. The observed activity is classified into two dominant types, one with identifiable body phases and the other with only surface wave signatures. The latter type comprises over 99% of the reported 1000+ microseismic event locations. The problem with the slow-moving surface-wave signature events is that rainfall and weather-associated frontal passages seem closely related to these periods of seismic activity at all three wells. After relatively short periods and low levels of flow testing at the Parcperdue and Sweet Lake prospects, seismic monitoring has shown little credible correlation to inferred growth fault locations during periods of flow testing. Longer periods and higher volumes of flow testing at the Rockefeller Refuge prospect should provide a truer indication of induced seismicity attributable to geopressured-geothermal development. 4 refs., 5 figs.

Stevenson, D.

1985-01-01T23:59:59.000Z

294

Cementing of geothermal wells. Progress report No. 12, January-March, 1979  

DOE Green Energy (OSTI)

Work to implement the program plan for the development of improved high temperature cementing materials for geothermal wells is continuing. Results from initial tests in the Dynamic Brine Exposure Testing Apparatus (D-BETA) are available. Based upon initial data, the rate at which cement coupons undergo change in the D-BETA is between that of the static tests and the dynamic exposures at East Mesa. Several cementing compositions have been formulated with chemical, physical and mechanical properties to withstand the existing geothermal conditions. The pumpability of three formulations has been demonstrated and the materials have been submitted to NBS for additional evaluation. The effect of Al/sub 2/O/sub 3/, Fe/sub 2/O/sub 3/, SO/sub 3/, Na/sub 2/CO/sub 3/ and Na/sub 2/SO/sub 4/ on different binders were studied at Colorado School of Mines. The results were found to range from deleterious to beneficial. Phosphate-bonded cements have been produced at the University of Rhode Island from a glass containing 7% Na/sub 2/O, 24% CaO, 24% Al/sub 2/O/sub 3/ and 45% SiO/sub 2/. Preliminary tests indicate that the material sets in several hours and appears to have some high temperature stability. Tests performed on hydrothermal cements indicate six formulations that are pumpable as long as three hours at 316/sup 0/C. Two formulations, Al/sub 2/O/sub 3/ and ZrO/sub 2/, have been chosen for use at temperatures above 300/sup 0/C. Polymer concentrates containing cement fillers have been found to be hydrothermally stable in 300/sup 0/C brine. Recommended standards for evaluating geothermal well cements have been developed by NBS. (MHR)

Not Available

1979-08-01T23:59:59.000Z

295

Geophysical well logging operations and log analysis in Geothermal Well Desert Peak No. B-23-1  

DOE Green Energy (OSTI)

Geothermal Well Desert Peak No. B-23-1 was logged by Dresser Atlas during April/May 1979 to a total depth of 2939 m (9642 ft). A temperature of 209/sup 0/C (408/sup 0/F) was observed on the maximum thermometer run with one of the logging tools. Borehole tools rated to a maximum temperature of 204.4/sup 0/C (400/sup 0/F) were utilized for logging except for the Densilog tool, which was from the other set of borehole instruments, rated to a still higher temperature, i.e., 260/sup 0/C (500/sup 0/F). The quality of the logs recorded and the environmental effects on the log response have been considered. The log response in the unusual lithologies of igneous and metamorphic formations encountered in this well could be correlated with the drill cutting data. An empirical, statistical log interpretation approach has made it possible to obtain meaningful information on the rocks penetrated. Various crossplots/histograms of the corrected log data have been generated on the computer. These are found to provide good resolution between the lithological units in the rock sequence. The crossplotting techniques and the statistical approach were combined with the drill cutting descriptions in order to arrive at the lithological characteristics. The results of log analysis and recommendations for logging of future wells have been included.

Sethi, D.K.; Fertl, W.H.

1980-03-01T23:59:59.000Z

296

Idaho: basic data for thermal springs and wells as recorded in GEOTHERM, Part A  

DOE Green Energy (OSTI)

All chemical data for geothermal fluids in Idaho available as of December 1981 is maintained on GEOTHERM, computerized information system. This report presents summaries and sources of records for Idaho. 7 refs. (ACR)

Bliss, J.D.

1983-07-01T23:59:59.000Z

297

Nevada: basic data for thermal springs and wells as recorded in GEOTHERM. Part A  

DOE Green Energy (OSTI)

All chemical data for geothermal fluids in Nevada available as of December 1981 are maintained on GEOTHERM, a computerized information system. This report presents summaries and sources of records for Nevada. 7 refs. (ACR)

Bliss, J.D.

1983-06-01T23:59:59.000Z

298

California: basic data for thermal springs and wells as recorded in GEOTHERM. Part A  

DOE Green Energy (OSTI)

This GEOTHERM sample file contains 1535 records for California. Three computer-generated indexes give one line summaries of each GEOTHERM record. Each index is sorted by different variables to assist in locating geothermal records describing specific sites. 7 refs. (ACR)

Bliss, J.D.

1983-07-01T23:59:59.000Z

299

City of North Bonneville, Washington: Geothermal Exploration Project, production test well, Phase II. Final report  

SciTech Connect

Based on discussions with the City of North Bonneville, the production test well was drilled to a depth that would also explore for ground water temperatures near 130/sup 0/F (54.4/sup 0/C). Depth projections to a 130/sup 0/F bottom hole temperature were made by assuming a constant ground water temperature rise greater than 50/sup 0/C per kilometer, and by assuming that essentially homogeneous or equivalent conductive rock units would be encountered. Minimum water production requirements were not set, although the City determined that about 800 gpm would be acceptable. Large upper casing diameters of 16 and 12 inches were installed in order to provide the future use of either a vertical turbine or submersible pump, as desired by the city. The scope of work included interpretation of well characteristics, evaluation of ground water as a geothermal resource, geologic analysis of data from drilling and testing, drilling supervision, daily drilling cost accounting, and preparation of a final report. The report includes geologic evaluation of the drilling and test data, ground water and geothermal potential.

Not Available

1982-06-01T23:59:59.000Z

300

Cementing of geothermal wells. Progress report No. 10, July--September 1978  

DOE Green Energy (OSTI)

Work to implement the program plan for the development of improved high temperature cementing materials for geothermal wells is continuing. Experimental work has been completed at the Colorado School of Mines. Samples of ..beta..-dicalcium silicate-silica cement developed in this program have been submitted for additional evaluation. The initial screening portion of this work has identified several promising systems that will undergo more rigorous testing. Dynamic brine exposure testing of several systems has been initiated at the East Mesa Geothermal Test Facility. Testing at the Niland test site is scheduled to start soon. Property verification tests on cements produced in the materials development phase of the program were initiated at the Bureau of Standards. Preliminary data are available for five cements exposed for 176 h to water at a temperature of 195/sup 0/C. Three of the cements exhibited strength losses during the test. An aluminum hydroxide cement and a polymer cement showed slight increases in strength after the exposure. These and longer-term data will be utilized in the selection of a material for use in the remedial cementing of a hot dry rock well at the Los Alamos Scientific Laboratory.

Not Available

1978-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Cementing of geothermal wells. Progress report No. 7, October--December 1977  

DOE Green Energy (OSTI)

Progress in work to implement the program plan for the development of improved high temperature cementing materials for geothermal wells is reported. Work on the first element of the program management plan (problem definition) was completed and a report issued. The materials development and property verification phases of the plan are in progress. Plans for the down-hole testing phase of the program are being formulated. The most promising high temperature polymer cement (PC) system identified to date consists of a cross-linked mixture of styrene, acrylonitrile, and acrylamide in conjunction with a sand-cement filler. A study is in progress to optimize the concentrations of the mix components with respect to properties. Work to determine the pumpability of the system is in progress. Samples of PC have been removed after exposure at The Geysers to dry steam at 460/sup 0/F (238/sup 0/C) for 2 yrs. Visual inspection of the specimens indicated little apparent deterioration. The appendix includes five reports from contributing researchers on the development of high temperature cementing materials for geothermal wells.

Steinberg, M.; Kukacka, L.E.

1977-12-01T23:59:59.000Z

302

Program on Technology Innovation: Geothermal Energy Harvesting from a Closed-Loop Single-Well Heat Exchanger Technology  

Science Conference Proceedings (OSTI)

From the perspective of reducing the cost of an enhanced geothermal system (EGS) that requires injection and productions wells, a single-wellbore configuration could be a cost-efficient solution for larger geothermal plants that are constrained by water demand. The applicability of a single-wellbore configuration depends on the ability to have high thermal conductivity with the heat exchange from the rock system surrounding it. The result of the Polaris award work suggests that a numerical model is neede...

2010-11-30T23:59:59.000Z

303

Geopressured geothermal fairway evaluation and test-well site location, Frio Formation, Texas Gulf Coast  

DOE Green Energy (OSTI)

Tertiary strata of the Texas Gulf Coast comprise a number of terrigenous depositional wedges, some of which thicken abruptly at their downdip ends as a result of contemporaneous movement of growth faults and underlying salt. The Frio Formation, one of these wedges, has been studied regionally by means of a grid of correlation cross sections aided by micropaleontological control. By means of these sections, the Frio was subdivided into six map units; maps of sandstone distribution within these units delineate principal elongate sandstone trends parallel to the Gulf Coast composed of deltaic, barrier-bar, and strandplain sandstones. These broad regional studies, followed by detailed local investigations, were pursued in order to delineate prospective areas for production of geopressured geothermal energy. A prospective area must meet the following minimum requirements; reservoir volume of 3 cubic miles, minimum permeability of 20 millidarcys (md), and fluid temperatures of 300/sup 0/F. Several geothermal fairways were identified as a result of this Frio study. In summary, detailed geological, geophysical, and engineering studies conducted on the Frio Formation have delineated a geothermal test well site in the Austin Bayou Prospect which extends over an area of 60 square miles. A total of 800 to 900 feet of sandstone will occur between the depths of 13,500 and 16,500 feet. At least 30% of the sand will have core permeabilities of 20 to 60 millidarcys. Temperature at the top of the sandstone section will be 300/sup 0/F. Water, produced at a rate of 20,000 to 40,000 barrels per day, will probably have to be disposed of by injection into shallower sandstone reservoirs. More than 10 billion barrels of water are in place in these sandstone reservoirs of the Austin Bayou Prospect; there should be approximately 400 billion cubic feed of methane in solution in this water.

Bebout, D.G.; Loucks, R.G.; Gregory, A.R.

1978-01-01T23:59:59.000Z

304

Potential impacts of artificial intelligence expert systems on geothermal well drilling costs:  

DOE Green Energy (OSTI)

The Geothermal research Program of the US Department of Energy (DOE) has as one of its goals to reduce the cost of drilling geothermal wells by 25 percent. To attain this goal, DOE continuously evaluates new technologies to determine their potential in contributing to the Program. One such technology is artifical intelligence (AI), a branch of computer science that, in recent years, has begun to impact the marketplace in a number of fields. Expert systems techniques can (and in some cases, already have) been applied to develop computer-based ''advisors'' to assist drilling personnel in areas such as designing mud systems, casing plans, and cement programs, optimizing drill bit selection and bottom hole asssembly (BHA) design, and alleviating lost circulation, stuck pipe, fishing, and cement problems. Intelligent machines with sensor and/or robotic directly linked to AI systems, have potential applications in areas of bit control, rig hydraulics, pipe handling, and pipe inspection. Using a well costing spreadsheet, the potential savings that could be attributed to each of these systems was calculated for three base cases: a dry steam well at The Geysers, a medium-depth Imerial Valley well, and a deep Imperial Valley well. Based on the average potential savings to be realized, expert systems for handling lost circulations problems and for BHA design are the most likely to produce significant results. Automated bit control and rig hydraulics also exhibit high potential savings, but these savings are extremely sensitive to the assumptions of improved drilling efficiency and the cost of these sytems at the rig. 50 refs., 19 figs., 17 tabs.

Satrape, J.V.

1987-11-24T23:59:59.000Z

305

Results of investigations of failures of geothermal direct-use well pumps  

DOE Green Energy (OSTI)

Failures of 13 geothermal direct-use well pumps were investigated and information obtained about an additional 5 pumps that have been in service up to 23 years, but have not failed. Pumps with extra long lateral and variable-speed drives had the highest correlation with reduced time in service. There appears to be at least circumstantial evidence that recirculation may be a cause of reduced pump life. If recirculation is a cause of pump failures, pump specifiers will need to be more aware of minimum flow conditions as well as maximum flow conditions when specifying pumps. Over-sizing pumps and the tendency to specify pumps with high flow and low Net Positive Suction Head (NPSH) could lead to increased problems with recirculation.

Culver, G.

1994-12-01T23:59:59.000Z

306

Geothermal well cements: current status of R and D and downhole testing  

DOE Green Energy (OSTI)

The status as of October 1981 of the program to develop and test geothermal well cementing materials. The program represents the most comprehensive and thorough examination of the geothermal cementing problem undertaken thus far. To date, 27 cements identified in an R and D phase of the program or supplied by industry have been evaluated in laboratory tests. Sixteen of these materials were selected for downhole investigations currently in progress in Mexico at Cerro Prieto. Data for 3 months exposures to flowing brine at 210{sup 0}C are available. Most of the cements continue to meet the strength and permeability acceptance criteria. These results should be reassuring to operators who are using such slurries. Further evaluations are planned after 6 and 12 months exposures. Contingent upon these results, tests will be initiated at 350{sup 0}C. Since many of the cements were formulated specifically for use at temperatures above 300/sup 0/C, it is expected that significant property improvements may be observed as the downhole temperature is increased.

Kukacka, L.E.

1981-11-01T23:59:59.000Z

307

Geothermal reservoir assessment: Northern Basin and Range Province, Stillwater prospect, Churchill County, Nevada. Final report, April 1979-July 1981  

DOE Green Energy (OSTI)

Union Oil Company of California drilled two exploratory geothermal wells in the Stillwater geothermal prospect area in northwestern Nevada to obtain new subsurface data for inclusion in the geothermal reservoir assessment program. Existing data from prior investigations, which included the drilling of four earlier deep temperature gradient wells in the Stillwater area, was also provided. The two wells were drilled to total depths of 6946 ft and 10,014 ft with no significant drilling problems. A maximum reservoir temperature of 353 F was measured at 9950 ft. The most productive well flow tested at a rate of 152,000 lbs/hr with a wellhead temperature of 252 F and pressure of 20 psig. Based upon current economics, the Stillwater geothermal prospect is considered to be subcommercial for the generation of electrical power. This synopsis of the exploratory drilling activities and results contains summary drilling, geologic, and reservoir information from two exploratory geothermal wells.

Ash, D.L.; Dondanville, R.F.; Gulati, M.S.

1981-08-01T23:59:59.000Z

308

Temperatures and interval geothermal-gradient determinations from wells in National Petroleum Reserve in Alaska  

SciTech Connect

Temperature and related records from 28 wells in the National Petroleum Reserve in Alaska (NPRA) although somewhat constrained from accuracy by data gathering methods, extrapolate to undisturbed formation temperatures at specific depths below permafrost, and lead to calculated geothermal graidents between these depths. Tabulation of the results show that extrapolated undisturbed temperatures range from a minimum of 98/sup 0/F (37/sup 0/C) at 4000 feet (1220 m) to a maximum of 420/sup 0/F (216/sup 0/C) at 20,260 feet (6177 m) and that geothermal gradients range from 0.34/sup 0/F/100' (6/sup 0/C/km) between 4470 feet to 7975 feet (Lisburne No. 1) and 3.15/sup 0/F/100' (57/sup 0/C/km) between 6830 feet to 7940 feet (Drew Point No. 1). Essential information needed for extrapolations consists of: time-sequential bottom-hole temperatures during wire-line logging of intermediate and deep intervals of the borehole; the times that circulating drilling fluids had disturbed the formations; and the subsequent times that non-circulating drilling fluids had been in contact with the formation. In several wells presumed near direct measures of rock temperatures recorded from formation fluids recovered by drill stem tests (DST) across thin (approx. 10-20 foot) intervals are made available. We believe that the results approach actual values close enough to serve as approximations of the thermal regimes in appropriate future investigations. Continuous temperature logs obtained at the start and end of final logging operations, conductivity measurements, and relatively long-term measurements of the recovery from disturbance at shallow depths in many of the wells will permit refinements of our values and provide determination of temperatures at other depths. 4 references, 6 figures, 3 tables.

Blanchard, D.C.; Tailleur, I.L.

1983-12-15T23:59:59.000Z

309

Estimating fracture parameters from p-wave velocity profiles about a geothermal well  

DOE Green Energy (OSTI)

The feasibility of locating fracture zones and estimating their crack parameters was examined using an areal well shoot method centered on Utah State Geothermal Well 9-1, Beaver County, Utah. High-resolution travel time measurements were made between a borehole sensor and an array of shot stations distributed radially and azimuthally about the well. Directional velocity behavior in the vicinity of the well was investigated by comparing velocity logs derived from the travel time data. Three fracture zones were identified form the velocity data, corroborating fracture indicators seen in other geophysical logs conducted in Well 9-1. Crack densities and average crack aspect ratios for these fracture zones were estimated using a self-consistent velocity theory (O'Connell and Budiansy 1974). Probable trends of these fracture zones were established from a combination of the data from the more distant shot stations and the results of a gravity survey. The results of this study indicate that the areal well shoot is a potentially powerful tool for the reconnaisance of fracture-controlled fluid and gas reservoirs. Improvements in methodology and hardware could transform it into an operationally viable survey method.

Jenkinson, J.T.; Henyey, T.L.; Sammis, C.G.; Leary, P.C.; McRaney, J.K.

1981-12-01T23:59:59.000Z

310

Imaging Fluid Flow in Geothermal Wells Using Distributed Thermal Perturbation Sensing  

SciTech Connect

The objective of Task 2 is to develop a numerical method for the efficient and accurate analysis of distributed thermal perturbation sensing (DTPS) data for (1) imaging flow profiles and (2) in situ determination of thermal conductivities and heat fluxes. Numerical forward and inverse modeling is employed to: (1) Examine heat and fluid flow processes near a geothermal well under heating and cooling conditions; (2) Demonstrate ability to interpret DTPS thermal profiles with acceptable estimation uncertainty using inverse modeling of synthetic temperature data; and (3) Develop template model and analysis procedure for the inversion of temperature data collected during a thermal perturbation test using fiber-optic distributed temperature sensors. This status report summarizes initial model developments and analyses.

Freifeld, B.; Finsterle, S.

2010-12-10T23:59:59.000Z

311

Cementing of geothermal wells. Progress report No. 9, April--June 1978  

DOE Green Energy (OSTI)

Work to implement the program plan for the development of improved high temperature cementing materials for geothermal wells is continuing. Work on polymer cements containing mixtures of organosiloxanes and styrene is continuing to show the potential of the system as a high temperature cementing material. Samples exposed for 360 hr to brine at 250/sup 0/C have not shown evidence of hydrolysis and have maintained high strength. At 350/sup 0/C, the compressive strength is > 5000 psi. Preliminary tests to determine the pumpability of the system are in progress. Work on the development of inorganic cementing materials is continuing at six laboratories. Several promising materials have been identified. Tests to measure compressive strengths, bond strengths, permeability, and compatibility with drilling muds are in progress. Consistometer tests have been performed on some materials.

Not Available

1978-11-01T23:59:59.000Z

312

Texas: basic data for thermal springs and wells as recorded in GEOTHERM  

DOE Green Energy (OSTI)

This compilation identities all locations of potential source of geothermal fluids in Texas available as of December 1981. 7 refs. (ACR)

Bliss, J.D.

1983-07-01T23:59:59.000Z

313

Chemical stimulation treatment, The Geysers: Ottoboni State 22. Geothermal-reservoir well-stimulation program  

DOE Green Energy (OSTI)

Experiment No. 6 of the Geothermal Reservoir Well Stimulation Program (GRWSP) was performed at The Geysers Field in Sonoma County, California. This well had low productivity (46,000 lb/hr), probably because it did not intersect the primary natural fracture system of the reservoir. Surrounding production wells are considered to be good wells with an average flow rate of about 100,000 lb/hr. The stimulation technique selected was an acid etching treatment (Halliburton Services' MY-T-ACID). A small water prepad was used to provide tubular cooling and fluid loss control. Following the water prepad were 500 to 750 bbl of high viscosity crosslinked gel fluid and 400 to 500 bbl of a hydrofluoric-hydrochloric (HF-HCl) acid solution. The frac fluids were expected to enter only a single or limited fracture zone within the open interval. Frac rates of 20 to 40 BPM and surface pressures of 3000 psig were estimated for this treatment. During the job, however, no significant surface pressure was recorded, and all fluids flowed easily into the interval. Subsequent evaluation of the well performance showed that no noticeable stimulation had been achieved even though the frac fluids were properly injected. Temperature and gamma ray surveys along with tracer studies indicated that the frac fluids entered natural fracture channels over a 650-foot zone of the open interval, which probably prevented the staged acid etching treatment from functioning as designed.

Not Available

1981-02-01T23:59:59.000Z

314

CNCC Craig Campus Geothermal Project: 82-well closed loop GHP well field to provide geothermal energy as a common utilitiy for a new community college campus  

Science Conference Proceedings (OSTI)

Colorado Northwestern Community College (CNCC) is working collaboratively with recipient vendor Chevron Energy Solutions, an energy services company (ESCO), to develop an innovative GHP project at the new CNCC Campus constructed in 2010/2011 in Craig, Colorado. The purpose of the CNCC Craig Campus Geothermal Program scope was to utilize an energy performance contracting approach to develop a geothermal system with a shared closed-loop field providing geothermal energy to each building's GHP mechanical system. Additional benefits to the project include promoting good jobs and clean energy while reducing operating costs for the college. The project has demonstrated that GHP technology is viable for new construction using the energy performance contracting model. The project also enabled the project team to evaluate several options to give the College a best value proposition for not only the initial design and construction costs but build high performance facilities that will save the College for many years to come. The design involved comparing the economic feasibility of GHP by comparing its cost to that of traditional HVAC systems via energy model, financial life cycle cost analysis of energy savings and capital cost, and finally by evaluating the compatibility of the mechanical design for GHP compared to traditional HVAC design. The project shows that GHP system design can be incorporated into the design of new commercial buildings if the design teams, architect, contractor, and owner coordinate carefully during the early phases of design. The public also benefits because the new CNCC campus is a center of education for the much of Northwestern Colorado, and students in K-12 programs (Science Spree 2010) through the CNCC two-year degree programs are already integrating geothermal and GHP technology. One of the greatest challenges met during this program was coordination of multiple engineering and development stakeholders. The leadership of Principle Investigator Pres. John Boyd of CNCC met this challenge by showing clear leadership in setting common goals and resolving conflicts early in the program.

Chevron Energy Solutions; Matt Rush; Scott Shulda

2011-01-03T23:59:59.000Z

315

Flint Geothermal Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Flint Geothermal Geothermal Area Flint Geothermal Geothermal Area (Redirected from Flint Geothermal Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Flint Geothermal Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (9) 10 References Area Overview Geothermal Area Profile Location: Colorado Exploration Region: Rio Grande Rift GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

316

New Bridge Plug and Retrieving Tool that Aids Completion of Geothermal Steam Wells  

DOE Green Energy (OSTI)

A typical completion procedure requires placement of a bridge plug near the liner top of a producing steam well so the well can be loaded to permit cementing of the tieback casing string by conventional cementing techniques. A drillable bridge plug has been used in the past so that it could be removed with a conventional toothed, cone-type drill bit. All components could not be drilled out because the bridge plug would separate from the casing when drilling through its top slips. This created a hazardous situation because heavy components remaining in the well could blowout after placing the well into production and damage or destroy surface equipment. A bridge plug and its companion milling-type retrieving tool were developed to perform the bridging operation and accomplish removal in a producing geothermal steam well environment. The bridge plug features an internal briding plug that is designed to permit the release of differential pressure buildup from below before releasing the bridge plug by milling away the top slips. The millinog-type retrieving tool has a catcher mechanism designed to function in the high-velocity steam flow of a producing well to catch the released bridge plug. After the released bridge plug components are caught, they may be returned to the surface in a controlled manner. This removes the massive components so that they will not be blown out by the steam of a producing well. Field use has demonstrated that this equipment is a practical completion aid, and it is currently being used in The Geysers field of northern California. Examples of field usage are discussed in the paper.

Harris, A.; Thompson, P.; Ash, D.

1981-01-01T23:59:59.000Z

317

Application of oil-field well log interpretation techniques to the Cerro Prieto Geothermal Field  

DOE Green Energy (OSTI)

An example is presented of the application of oil-field techniques to the Cerro Prieto Field, Mexico. The lithology in this field (sand-shale lithology) is relatively similar to oil-field systems. The study was undertaken as a part of the first series of case studies supported by the Geothermal Log Interpretation Program (GLIP) of the US Department of Energy. The suites of logs for individual wells were far from complete. This was partly because of adverse borehole conditions but mostly because of unavailability of high-temperature tools. The most complete set of logs was a combination of Dual Induction Laterolog, Compensated Formation Density Gamma Ray, Compensated Neutron Log, and Saraband. Temperature data about the wells were sketchy, and the logs had been run under pre-cooled mud condition. A system of interpretation consisting of a combination of graphic and numerical studies was used to study the logs. From graphical studies, evidence of hydrothermal alteration may be established from the trend analysis of SP (self potential) and ILD (deep induction log). Furthermore, the cross plot techniques using data from density and neutron logs may help in establishing compaction as well as rock density profile with depth. In the numerical method, R/sub wa/ values from three different resistivity logs were computed and brought into agreement. From this approach, values of formation temperature and mud filtrate resistivity effective at the time of logging were established.

Ershaghi, I.; Phillips, L.B.; Dougherty, E.L.; Handy, L.L.

1979-10-01T23:59:59.000Z

318

Lightweight CO{sub 2}-resistant cements for geothermal well completions  

DOE Green Energy (OSTI)

Materials formed by acid-base reactions between calcium aluminate compounds and phosphate-containing solutions yield high strength, low permeability and CO{sub 2}-resistant cements when cured in hydrothermal environments. The cementing formulations are pumpable at temperatures up to 150{degrees}C. thereby making their use for well completions technically feasible. When this cementing matrix was exposed in an autoclave containing Na{sub 2}CO{sub 3},-saturated brine for 120 days. <0.4 wt% CaCO{sub 3} was produced. A conventional portland cement-based well completion material will form {approximately}10 wt% CACO, after only 7 days exposure. The addition of hollow aluminosilicate microspheres to the uncured matrix constituents yields slurries with densities as low as {approximately} 1.2 g/cc which cure to produce materials with properties meeting die criteria for well cementing. These formulations also exhibit low rates of carbonation. Laboratory characterization is nearing completion. engineering scale-up is underway, and plans for field testing in a variety of geothermal fluids are being made.

Kukacka, L.E.; Sugama, T.

1995-02-01T23:59:59.000Z

319

Final report for the geothermal well site restoration and plug and abandonment of wells: DOE Pleasant Bayou test site, Brazoria County, Texas  

DOE Green Energy (OSTI)

For a variety of reasons, thousands of oil and gas wells have been abandoned in the Gulf Coast Region of the United States. Many of these wells penetrated geopressured zones whose resource potential for power generation was undervalued or ignored. The U.S. Department of Energy (DOE) Geopressured-Geothermal Research Program was chartered to improve geothermal technology to the point where electricity could be commercially produced from a substantial number of geopressured resource sites. This research program focused on relatively narrow technical issues that are unique to geopressured resources such as the ability to predict reservoir production capacity based on preliminary flow tests. Three well sites were selected for the research program. These are the Willis Hulin and Gladys McCall sites in Louisiana, and the Pleasant Bayou site in Texas. The final phase of this research project consists of plug and abandonment (P&A) of the wells and site restoration.

Rinehart, Ben N.; Seigel, Ben H.

1994-03-13T23:59:59.000Z

320

Exploratory Boreholes | Open Energy Information  

Open Energy Info (EERE)

Exploratory Boreholes Exploratory Boreholes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Exploratory Boreholes Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Drilling Techniques Exploration Sub Group: Exploration Drilling Parent Exploration Technique: Exploration Drilling Information Provided by Technique Lithology: Can provide core or cuttings Stratigraphic/Structural: Identify stratigraphy and structural features within a borehole Hydrological: -Water samples can be used for geochemical analysis -Fluid pressures can be used to estimate flow rates Thermal: -Temperatures can be measured within the hole -Information about the heat source Dictionary.png Exploratory Boreholes: An exploratory borehole is drilled for the purpose of identifying the

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321

Investigation and Evaluation of Geopressured - Geothermal Wells, Final Report; Alice C. Plantation No. 2 Well, St. Mary Parish, Louisiana; Volume 1; Narrative Report  

DOE Green Energy (OSTI)

Gruy Federal, Inc. (Gruy) operates under Contract No. EG-77-C-08-1528 to the Department of Energy, Division of Geothermal Energy, to evaluate potential alternate energy sources occurring within geopressured-geothermal (Geo) aquifers in Miocene, Oligocene, Tuscaloosa, Wilcox, and Frio formations along the Texas and Louisiana Gulf Coast. The project is entitled ''Investigation and Evaluation of Geopressured-Geothermal Wells''. The original period of performance was from September 26, 1977, through September 30, 1978; the contract was later extended through September 30, 1979. The first well on which testing was attempted under this contract was the Alice C. Plantation No. 2 Well, located in St. Mary Parish, Louisiana. Originally drilled by the Sun Oil Company to a total depth of 19,000 feet, this well was abandoned as a dry hole in January 1964. Gruy's reentry attempt ended with plugging and abandonment after a saltwater flow on September 17, 1978. This report is a comprehensive document detailing all events and costs relating to the Alice C. plantation well, from its initial selection as a reentry well through the plugging and abandonment operations.

Lohse, Alan; Willits, M.H.

1978-12-01T23:59:59.000Z

322

Temperature histories in geothermal wells: survey of rock thermomechanical properties and drilling, production, and injection case studies  

DOE Green Energy (OSTI)

Thermal and mechanical properties for geothermal formations are tabulated for a range of temperatures and stress conditions. Data was obtained from the technical literature and direct contacts with industry. Thermal properties include heat capacity, conductivity, and diffusivity. Undisturbed geothermal profiles are also presented. Mechanical properties include Youngs modulus and Poisson ratio. GEOTEMP thermal simulations of drilling, production and injection are reported for two geothermal regions, the hot dry rock area near Los Alamos and the East Mesa field in the Imperial Valley. Actual drilling, production, and injection histories are simulated. Results are documented in the form of printed GEOTEMP output and plots of temperatures versus depth, radius, and time. Discussion and interpretation of the results are presented for drilling and well completion design to determine: wellbore temperatures during drilling as a function of depth; bit temperatures over the drilling history; cement temperatures from setting to the end of drilling; and casing and formation temperatures during drilling, production, and injection.

Goodman, M.A.

1981-07-01T23:59:59.000Z

323

An Environmental Assessment of Proposed Geothermal Well Testing in the Tigre Lagoon Oil Field, Vermilion Parish, Louisiana  

DOE Green Energy (OSTI)

This report is an environmental assessment of the proposed testing of two geopressured, geothermal aquifers in central coastal Louisiana. On the basis of an analysis of the environmental setting, subsurface characteristics, and the proposed action, potential environmental impacts are determined and evaluated together with potential conflicts with federal, state, and local programs. Oil and gas wells in coastal Louisiana have penetrated a potentially productive geothermal zone of abnormally high-pressured aquifers that also yield large volumes of natural gas. To evaluate the extent to which the geothermal-geopressured water can be used as an alternative energy source and to what extent withdrawal of geopressured water can enhance gas production, it is necessary that flow rates, composition and temperature of fluids and gases, recharge characteristics, pressures, compressibilities, and other hydrodynamic and boundary conditions of the reservoir be determined by means of production tests. Tests are further necessary to evaluate and seek solutions to technological problems.

None

1976-03-01T23:59:59.000Z

324

Microseismic monitoring of Chocolate Bayou, Texas: the Pleasant Bayou No. 2 geopressured/geothermal energy test well program  

DOE Green Energy (OSTI)

The Brazoria seismic network, instrumentation, design, and specifications are described. The data analysis procedures are presented. Seismicity is described in relation to the Pleasant Bayou production history. Seismicity originating near the chemical plant east of the geopressured/geothermal well is discussed. (MHR)

Mauk, F.J.; Kimball, B.; Davis, R.A.

1984-01-01T23:59:59.000Z

325

Geochemistry of sericite and chlorite in well 14-2 Roosevelt Hot Springs geothermal system and in mineralized hydrothermal systems  

DOE Green Energy (OSTI)

Chemical compositions of chlorite and sericite from one production well in the Roosevelt geothermal system have been determined by electron probe methods and compared with compositions of chlorite and sericite from porphyry copper deposits. Modern system sericite and chlorite occur over a depth interval of 2 km and a temperature interval of 250/sup 0/C.

Ballantyne, J.M.

1980-06-01T23:59:59.000Z

326

Imperial County geothermal development. Quarterly report, April 1, 1980-June 30, 1981  

DOE Green Energy (OSTI)

Three areas are reported: Geothermal Administration, Geothermal Planning; and other Geothermal Activities. Geothermal Administration addresses the status of the Imperial Valley Environmental Project (IVEP) transfer, update of the Geothermal Resource Center, and findings of Geothermal field inspections. Field inspections will cover the four new wells drilled by Magma at the Salton Sea in preparation for 28 MW power plant, the progress at Sperry at East Mesa, and the two on-line power plants in East Mesa and North Brawley. Evaluation of cooperative efforts will cover the Geothermal Subsidence Detection Network Resurvey, Master EIR for the Salton Sea and the Annual Imperial County Geothermal meeting. The status of Geothermal development throughout the County will cover existing proposed facilities. The summary of the Geothermal meeting (Appendix A) will also provide the status of several projects. Geothermal Planning addresses the EIR Notice of Exemption from CEQA, progress on the Master EIR for the Salton Sea, and the EIR for Phillips Petroleum for 6 exploratory wells in the Truckhaven area. Other Geothermal Activity addresses the Department of Energy Region IX meeting hosted by Imperial County, the Annual Imperial County Geothermal meeting, Class II-1 geothermal hazardous waste disposal siting study, and Imperial County Geothermal Direct Heat Study.

Not Available

1981-01-01T23:59:59.000Z

327

Niland development project geothermal loan guaranty: 49-MW (net) power plant and geothermal well field development, Imperial County, California: Environmental assessment  

DOE Green Energy (OSTI)

The proposed federal action addressed by this environmental assessment is the authorization of disbursements under a loan guaranteed by the US Department of Energy for the Niland Geothermal Energy Program. The disbursements will partially finance the development of a geothermal well field in the Imperial Valley of California to supply a 25-MW(e) (net) power plant. Phase I of the project is the production of 25 MW(e) (net) of power; the full rate of 49 MW (net) would be achieved during Phase II. The project is located on approximately 1600 acres (648 ha) near the city of Niland in Imperial County, California. Well field development includes the initial drilling of 8 production wells for Phase I, 8 production wells for Phase II, and the possible need for as many as 16 replacement wells over the anticipated 30-year life of the facility. Activities associated with the power plant in addition to operation are excavation and construction of the facility and associated systems (such as cooling towers). Significant environmental impacts, as defined in Council on Environmental Quality regulation 40 CFR Part 1508.27, are not expected to occur as a result of this project. Minor impacts could include the following: local degradation of ambient air quality due to particulate and/or hydrogen sulfide emissions, temporarily increased ambient noise levels due to drilling and construction activities, and increased traffic. Impacts could be significant in the event of a major spill of geothermal fluid, which could contaminate groundwater and surface waters and alter or eliminate nearby habitat. Careful land use planning and engineering design, implementation of mitigation measures for pollution control, and design and implementation of an environmental monitoring program that can provide an early indication of potential problems should ensure that impacts, except for certain accidents, will be minimized.

Not Available

1984-10-01T23:59:59.000Z

328

SODIUM POLYPHOSPHATE-MODIFIED CLASS C/CLASS F FLY ASH BLEND CEMENTS FOR GEOTHERMAL WELLS.  

DOE Green Energy (OSTI)

The authors investigated the usefulness of the coal combustion by-products, Class C fly ash (C) and Class F fly ash (F), in developing cost-effective acid-resistant phosphate-based cements for geothermal wells. In the temperature range of 20-100 C, sodium polyphosphate (NaP) as the acidic cement-forming solution preferentially reacted with calcium sulfate and lime in the C as the base solid reactant through the exothermic acid-base reaction route, rather than with the tricalcium aluminate in C. This reaction led to the formation of hydroxyapatite (HOAp). In contrast, there was no acid-base reaction between the F as the acidic solid reactant and NaP. After autoclaving the cements at 250 C, a well-crystallized HOAp phase was formed in the NaP-modified C cement that was responsible for densifying the cement's structure, thereby conferring low water permeability and good compressive strength on the cement. however, the HOAp was susceptible to hot CO{sub 2}-laden H{sub 2}SO{sub 4} solution (pH 1.1), allowing some acid erosion of the cement. On the other hand, the mullite in F hydrothermally reacted with the Na from NaP to form the analcime phase. Although this phase played a pivotal role in abating acid erosion, its generation created an undesirable porous structure in the cement. They demonstrated that blending fly ash with a C/F ratio of 70/30 resulted in the most suitable properties for acid-resistant phosphate-based cement systems.

SUGAMA, T.; BROTHERS, L.E.; KASPEREIT, D.

2006-02-01T23:59:59.000Z

329

Characterization of injection wells in a fractured reservoir using PTS logs, Steamboat Hills Geothermal Field, Nevada, USA  

DOE Green Energy (OSTI)

The Steamboat Hills Geothermal Field in northwestern Nevada, about 15 km south of Reno, is a shallow (150m to 825m) moderate temperature (155 C to 168 C) liquid-dominated geothermal reservoir situated in highly-fractured granodiorite. Three injection wells were drilled and completed in granodiorite to dispose of spent geothermal fluids from the Steamboat II and III power plants (a 30 MW air-cooled binary-type facility). Injection wells were targeted to depths below 300m to inject spent fluids below producing fractures. First, quasi-static downhole pressure-temperature-spinner (PTS) logs were obtained. Then, the three wells were injection-tested using fluids between 80 C and 106 C at rates from 70 kg/s to 200 kg/s. PTS logs were run both up and down the wells during these injection tests. These PTS surveys have delineated the subsurface fracture zones which will accept fluid. The relative injectivity of the wells was also established. Shut-in interzonal flow within the wells was identified and characterized.

Goranson, Colin; Combs, Jim

1995-01-26T23:59:59.000Z

330

INEL/Snake River plain geothermal drilling and testing plan - INEL - 1 well  

DOE Green Energy (OSTI)

A plan for drilling a 7500 ft exploratory hole is described. This hole would be drilled at the Idaho National Engineering Laboratory, so that it could be immediately used by one of the government facilties. The plan details the hole design, describes the drilling program, proposes a testing program, and estimates costs. (MHR)

Miller, L.G.; Prestwich, S.M.; Griffith, J.L.

1978-12-01T23:59:59.000Z

331

Utah: basic data for thermal springs and wells as recorded in GEOTHERM  

DOE Green Energy (OSTI)

This GEOTHERM sample file contains 643 records for Utah. Records may be present which are duplicates for the same analyses. A record may contain data on location, sample description, analysis type (water, condensate, or gas), collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotopic data are occasionally available. Some records may contain only location and temperature. This compilation should contain all the chemical data for geothermal fluids in Utah available as of December, 1981. 7 refs. (ACR)

Bliss, J.D.

1983-05-01T23:59:59.000Z

332

Investigation and evaluation of geopressured-geothermal wells: Fairfax Foster Sutter No. 2 well, St. Mary Parish, Louisiana. Volume II. Well test data. Final report  

DOE Green Energy (OSTI)

The following data tables are included: pressure buildup, pressure survey, geothermal field test, analyses of reservoir brine, recombination analysis, analyses of separator gas, analyses of scale samples, H/sub 2/S in separator gas, and analysis of reservoir data. (MHR)

Willits, M.H.; McCoy, R.L.; Dobson, R.J.; Hartsock, J.H.

1979-12-01T23:59:59.000Z

333

DOE/EA-1621: Oregon Institute of Technology Deep Geothermal Well and Power Plant Project (September 2008)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oregon Institute of Technology (OIT) Oregon Institute of Technology (OIT) Deep Geothermal Well and Power Plant Project Final Environmental Assessment September 2008 Prepared for: U.S. Department of Energy 1617 Cole Boulevard Golden, CO 80401 Prepared by: MHA Environmental Consulting, An RMT Business 4 West Fourth Avenue, Suite 303 San Mateo, CA 94402 www.mha-inc.com - www.rmtinc.com Geo-Heat Center Oregon Institute of Technology (OIT) Klamath Falls, OR 97601 Oregon Institute of Technology (OIT) Deep Geothermal Well and Power Plant Project Final Environmental Assessment September 2008 Prepared for: U.S. Department of Energy 1617 Cole Boulevard Golden, CO 80401 Prepared by: MHA Environmental Consulting, An RMT Business 4 West Fourth Avenue, Suite 303 San Mateo, CA 94402 www.mha-inc.com - www.rmtinc.com Geo-Heat Center

334

Predicting the rate by which suspended solids plug geothermal injection wells  

DOE Green Energy (OSTI)

Standard membrane filtration tests were used to evaluate injection at the Salton Sea Geothermal Field, Southern California. Results indicate that direct injection into reservoir zones with primary porosity is not feasible unless 1 ..mu..m or larger particulates formed during or after the energy conversion process are removed. (JGB)

Owens, L.B.; Kasameyer, P.W.; Netherton, R.; Thorson, L.

1978-01-09T23:59:59.000Z

335

Environmental assessment of proposed geothermal well testing in the Tigre Lagoon Oil Field, Vermilion Parish, Louisiana  

DOE Green Energy (OSTI)

An environmental assessment is made of the proposed testing of two geopressured, geothermal aquifers in central coastal Louisiana. On the basis of an analysis of the environmental setting, subsurface characteristics, and the proposed action, potential environmental impacts are determined and evaluated together with potential conflicts with federal, state, and local programs. (LBS )

Not Available

1976-03-01T23:59:59.000Z

336

Idaho: basic data for thermal springs and wells as recorded in GEOTHERM. Part B  

DOE Green Energy (OSTI)

This compilation contains chemical data for geothermal fluids in Idaho available as of December, 1981. The 951 records contain data on location, sample description, analysis type, collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotope data are occasionally available. 6 refs.

Bliss, J.D.

1983-08-01T23:59:59.000Z

337

Nevada: basic data for thermal springs and wells as recorded in geotherm. Part B  

DOE Green Energy (OSTI)

This GEOTHERM sample file contains 1367 records for Nevada. The records contain data on location, sample description, analysis type, collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotope data are occassionally available. (ACR)

Bliss, J.D.

1983-07-01T23:59:59.000Z

338

Central and eastern United States: basic data for thermal springs and wells as recorded in GEOTHERM  

SciTech Connect

The GEOTHERM sample file contains 119 records for the central and eastern United States. The records contain data on location, sample description, analysis type, collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioisotopic data are occasionally available. 7 refs. (ACR)

Bliss, J.D.

1983-06-01T23:59:59.000Z

339

Technical support for geopressured-geothermal well activities in Louisiana. Final report, September 27, 1978-December 31, 1980  

DOE Green Energy (OSTI)

The data analysis is based on the Brazoria Texas well and the balance of the modeling work is theoretical. Progress in the regional assessment of the geopressured-geothermal resource in Louisiana is reported. Environmental monitoring effort established monitoring systems and baseline environmental measurements. Efforts to improve the technoeconomic model, improve the estimates of methane in solution, and to evaluate newly identified sites are described. (MHR)

Wrighton, F.M.; Bebout, D.; Carver, D.R.; Groat, C.C.; Johnson, A.E. Jr.

1981-08-31T23:59:59.000Z

340

Investigation and evaluation of geopressured-geothermal wells. Final report: Beulah Simon No. 2 Well, Vermilion Parish, Louisiana. Volume I. Completion and testing  

DOE Green Energy (OSTI)

Geopressured-geothermal (Geo{sup 2}) test operations were conducted at the Beulah Simon No. 2 well site during the period from September through December 1979. The well provided the second geopressured-geothermal test to be completed under the DOE-Gruy Well of Opportunity program. The completion in a geopressured aquifer of Oligocene age at approximately 14,700 feet and the testing of hot salt water from this zone were accomplished without significant difficulty. Some problems were encountered with the wireline and wireline high-pressure lubricator associated with the running of bottomhole instruments. The objectives of the project were all accomplished, and good test data were obtained on the flow rates of gas and water. The gas content was 24 standard cubic feet per stock tank barrel of water. The disposal well accepted the full wellhead stream at temperatures as high as 255{sup 0}F (124{sup 0}C). Over the 10-day flow period the hot brine did not appear to adversely affect the clay minerals in the disposal aquifer. A conclusion from this operation is that presently available wirelines and pressure lubricators are not adaptable for use with uninhibited well fluids under flowing conditions. In addition, this test demonstrated that injection of scale inhibitor down the annulus eliminated scale buildup within the flow string and surface facilities. (MHR)

Dobson, R.J.; Hartsock, J.H.; McCoy, R.L.; Rodgers, J.A.

1980-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Testing geopressured geothermal reservoirs in existing wells. Saldana well No. 2, Zapata County, Texas. Volume I. Completion and testing. Final report  

DOE Green Energy (OSTI)

The Saldana Well No. 2, approximately 35 miles Southeast of the city of Laredo, Texas, was the sixth successful test of a geopressured-geothermal aquifer under the DOE Wells of Opportunity Program. The well was tested through the annulus between 7-inch casing and 2-3/8 inch tubing. The interval tested was from 9745 to 9820 feet. The geological section was the 1st Hinnant Sand, an upper member of the Wilcox Group. Produced water was injected into the Saldana Well No. 1, which was also acquired from Riddle Oil Company and converted to a disposal well. A Miocene salt water sand was perforated from 3005 to 3100 feet for disposal. One pressure drawdown flow test and one pressure buildup test were conducted during a 10-day period. A total of 9328 barrels of water was produced. The highest sustained flow rate was 1950 BWPD.

Not Available

1981-10-07T23:59:59.000Z

342

Beowawe Geothermal Area evaluation program. Final report  

DOE Green Energy (OSTI)

Several exploration programs were conducted at the Beowawe Geothermal Prospect, Lander and Eureka County, Nevada. Part I, consisting of a shallow temperature hole program, a mercury soil sampling survey, and a self-potential survey were conducted in order to select the optimum site for an exploratory well. Part II consisted of drilling a 5927-foot exploratory well, running geophysical logs, conducting a drill stem test (2937-3208 feet), and a short-term (3-day) flow test (1655-2188 feet). All basic data collected is summarized.

Iovenitti, J. L

1981-03-01T23:59:59.000Z

343

High-temperature explosive development for geothermal well stimulation. Final report  

DOE Green Energy (OSTI)

A two-component, temperature-resistant liquid explosive called HITEX has been developed which is capable of withstanding 561/sup 0/K (550/sup 0/F) for 24 hours in a geothermal environment. The explosive is intended for the stimulation of nonproducing or marginally producing geothermal (hot dry rock, vapor-dominated or hydrothermal) reservoirs by fracturing the strata in the vicinity of a borehole. The explosive is inherently safe because it is mixed below ground downhole from two nondetonable liquid components. Development and safety tests included differential scanning calorimetry, thermal stability, minerals compatibility, drop-weight sensitivity, adiabatic compression, electrostatic discharge sensitivity, friction sensitivity, detonation arrest capability, cook-off tests, detonability at ambient and elevated pressure, detonation velocity and thin film propagation in a wedge.

Schmidt, E.W.; Mars, J.E.; Wang, C.

1978-03-31T23:59:59.000Z

344

A PACIFIC-WIDE GEOTHERMAL RESEARCH LABORATORY: THE PUNA GEOTHERMAL RESEARCH FACILITY  

SciTech Connect

The Hawaii Geothermal Project (HGP-A) well, located in the Kilauea volcano east rift zone, was drilled to a depth of 6450 feet in 1976. It is considered to be one of the hot-test producing geothermal wells in the world. This single well provides 52,800 pounds per hour of 371 F and 160 pounds per square inch-absolute (psia) steam to a 3-megawatt power plant, while the separated brine is discharged in percolating ponds. About 50,000 pounds per hour of 368 F and 155 psia brine is discharged. Geothermal energy development has increased steadily in Hawaii since the completion of HGP-A in 1976: (1) a 3 megawatt power plant at HGP-A was completed and has been operating since 1981; (2) Hawaiian Electric Company (HECO) has requested that their next increment in power production be from geothermal steam; (3) three development consortia are actively, or in the process of, drilling geothermal exploration wells on the Big Island; and (4) engineering work on the development of a 400 megawatt undersea cable for energy transmission is continuing, with exploratory discussions being initiated on other alternatives such as hydrogen. The purpose for establishing the Puna Geothermal Research Facility (PGRF) is multifold. PGRF provides a facility in Puna for high technology research, development, and demonstration in geothermal and related activities; initiate an industrial park development; and examine multi-purpose dehydration and biomass applications related to geothermal energy utilization.

Takahashi, P.; Seki, A.; Chen, B.

1985-01-22T23:59:59.000Z

345

Newberry Exploratory Slimhole: Drilling And Testing  

E-Print Network (OSTI)

During July-November, 1995, Sandia National Laboratories, in cooperation with CE Exploration, drilled a 5360' exploratory slimhole (3.895" diameter) in the Newberry Known Geothermal Resource Area (KGRA) near Bend, Oregon. This well was part of Sandia's program to evaluate slimholes as a geothermal exploration tool. During and after drilling we performed numerous temperature logs, and at the completion of drilling attempted to perform injection tests. In addition to these measurements, the well's data set includes: over 4000' of continuous core (with detailed log); daily drilling reports from Sandia and from drilling contractor personnel; daily drilling fluid record; and comparative data from other wells drilled in the Newberry KGRA. This report contains: (1) a narrative account of the drilling and testing, (2) a description of equipment used, (3) a brief geologic description of the formation drilled, (4) a summary and preliminary interpretation of the data, and (5) recommendations for ...

John Finger Ronald; Ronald D. Jacobson; Charles E. Hickox

1997-01-01T23:59:59.000Z

346

Investigation and evaluation of geopressured-geothermal wells. Fairfax Foster Sutter No. 2 well, St. Mary Parish, Louisiana. Volume I. Completion and testing. Final report  

DOE Green Energy (OSTI)

The Fairfax Foster Sutter No. 2 well, located in the East Franklin area of St. Mary Parish, Louisiana, is the first successful test of a geopressured-geothermal aquifer under the Well-of-Opportunity program. The section tested was the MA-6 sand of lower Miocene age which has produced large quantities of gas from the adjacent but structurally separated Garden City field. In the subject well the observed temperature was 270{sup 0}F (132{sup 0}C) and the measured gradient was 0.77 psi/ft. The gross sand thickness was 270 feet, the net sand thickness 190 feet, and the tested interval 58 net feet. The temperatures and pressures encountered approached the limits of the surface-recording bottomhole pressure gauge and particularly the single-conductor cables on which the gauges were run. The objectives of the tests were all accomplished, and data were obtained which will contribute to the overall assessment of the geopressured-geothermal resource of the Upper Gulf of Mexico basin. In general, the gas solubility (22.8 scf/bbl) was as expected for the temperature, pressure, and salinity of the brine. The produced water was more saline than expected (160,000 mg/l). The high concentrations of dissolved solids, coupled with the evolution of CO{sub 2} from these waters during production, created a scaling problem in the tubular goods and surface equipment that will have to be addressed in future tests.

Willits, M.H.; McCoy, R.L.; Dobson, R.J.; Hartsock, J.H.

1979-12-01T23:59:59.000Z

347

Investigation and evaluation of geopressured-geothermal wells. Final report, Tenneco Fee N No. 1 Well Terrebonne Paris, Louisiana  

DOE Green Energy (OSTI)

The reservoir conditions that led to the choice of this well as the fifth well of opportunity are described as well as the attempts to complete the well for high-volume brine production. Individual opinions concerning underlying and conributing causes for the liner failure which aborted the completion attempt are included. (MHR)

Dobson, R.J.; Hartsock, J.H.; McCoy, R.L.; Rodgers, J.A.

1980-09-01T23:59:59.000Z

348

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of the Watkins-Miller No.1 Well, Cameron Parish, Louisiana  

DOE Green Energy (OSTI)

This prospect was drilled as the Superior Oil Company No. 1 Watkins-Miller, located in Section 5, T15S, R5W, Cameron Parish, Louisiana. The well site is just north of lot 39 on Indian Point Island and is readily accessible from State Highway 82 via a shell road which is in good condition. This location is shown on the lower portion of the USGS topographic sheet ''Grand Lake West''; a portion of this sheet is included. Superior Oil completed this well in late 1970 as a dual gas producer in sands between 11,150 and 11,250 feet and abandoned it in December 1974. This well was initially selected as the first Geo reentry candidate but was deferred when the landowner refused to grant reentry and test rights. He has, however, now indicated that he would be willing to grant those rights for a fee of $50,000. In view of the need for an alternate well to replace the State Lease 4183 No. 1, Gruy Federal has thoroughly reviewed alternate wells and concluded that the Watkins-Miller No. 1 requires minimal site preparation and is the reentry well of choice.

None

1978-08-01T23:59:59.000Z

349

Session: Geopressured-Geothermal  

DOE Green Energy (OSTI)

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Overview of Geopressured-Geothermal'' by Allan J. Jelacic; ''Geothermal Well Operations and Automation in a Competitive Market'' by Ben A. Eaton; ''Reservoir Modeling and Prediction at Pleasant Bayou Geopressured-Geothermal Reservoir'' by G. Michael Shook; ''Survey of California Geopressured-Geothermal'' by Kelly Birkinshaw; and ''Technology Transfer, Reaching the Market for Geopressured-Geothermal Resources'' by Jane Negus-de Wys.

Jelacic, Allan J.; Eaton, Ben A.; Shook, G. Michael; Birkinshaw, Kelly; Negus-de Wys, Jane

1992-01-01T23:59:59.000Z

350

Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of Dr. M.O. Miller No. 1 Well  

DOE Green Energy (OSTI)

This Gruy Federal Type I-A prospect was drilled as the Union Oil Company of California, Dr. M.O. Miller No. 1 and is located in Section 34, T15S, R5W, Cameron Parish, Louisiana. The land belongs to the heirs of Dr. Miller and is unleased. The well site is approximately 350 feet southwest of the northwest corner of Section 34 and approximately 4,000 feet south-southeast of Prospect L-3, Buttes Gas and Oil Co. et al., Gladys McCall No. 1. The former well site is accessible by approximately 2.8 miles of canal levee on which a board road would have to be constructed. In addition, there are two wooden bridges in fair condition to be crossed which will require minor repairs. The well was drilled to a total depth of 18,158 feet and plugged and abandoned as a dry hole mid 1965.

None

1978-04-21T23:59:59.000Z

351

Wellbore and soil thermal simulation for geothermal wells: development of computer model and acquisition of field temperature data. Part I report  

SciTech Connect

A downhole thermal simulator has been developed to improve understanding of the high downhole temperatures that affect many design factors in geothermal wells. This development is documented and field temperature data presented for flowing and shut-in conditions.

Wooley, G.R.

1980-03-01T23:59:59.000Z

352

Technical support for geopressured-geothermal well activities in Louisiana; Final report, 1 January 1992--31 December 1993  

DOE Green Energy (OSTI)

The US Department of Energy has operated continuous-recording, microearthquake monitoring networks at geopressured-geothermal test well sites since 1980. These microseismic networks were designed to detect microearthquakes indicative of fault activation and/or subsidence that can potentially result from the deep subsurface withdrawal and underground disposal of large volumes of brine during well testing. Seismic networks were established before the beginning of testing to obtain background levels of seismicity. Monitoring continued during testing and for some time after cessation of flow testing to assess any delayed microseismicity caused by the time dependence of stress migration within the earth. No flow testing has been done at the Hulin well since January 1990, and the Pleasant Bayou well has been shut down since September 1992. Microseismic monitoring continued at the Hulin and Pleasant Bayou sites until 31 December 1992, at which time both operations were shut down and field sites dismantled. During 1992, the networks recorded seismic signals from earthquakes, sonic booms, geophysical blasting, thunderstorms, etc. However, as in previous years, no local microseismic activity attributable to geopressured-geothermal well testing was recorded.

John, C.J.

1994-01-01T23:59:59.000Z

353

Wellbore thermal simulation for geothermal wells. Survey of existing capability and industry needs and interest  

DOE Green Energy (OSTI)

Four operating companies and five service companies in the petroleum and geothermal industry were contacted (1) to determine needs for wellbore temperature predictions during operations and (2) to evaluate interest in use of a wellbore thermal simulator (computer program) if developed by ERDA. As a basis for contacting industry, a literature survey was undertaken to assess the state-of-the-art and availability of wellbore thermal simulation capability. The literature review is summarized in the four tables of Appendix 1. Written abstracts of the individual articles is given in Appendix 2. The feedback from industry is presented in Appendix 3 in the form of completed questionaires.

Goodman, M.A.

1977-06-01T23:59:59.000Z

354

Investigation and evaluation of geopressured-geothermal wells. Notes on Gruy Federal's Well-of-Opportunity program  

DOE Green Energy (OSTI)

Obtaining test data from geopressured aquifers along the Texas and Louisiana Gulf Coast by arranging to assume operation of wells already drilled and found nonproductive of conventional oil or gas accumulations before such wells were abandoned by the operators is described. The geopressured aquifers were tested after performing whatever additional operations were required. The monitoring and screening of all wells which might qualify is described. The major activities and important milestones are summarized. (MHR)

Not Available

1979-02-01T23:59:59.000Z

355

Hydraulic-fracture stimulation treatments at East Mesa, Well 58-30. Geothermal-reservoir well-stimulation program  

DOE Green Energy (OSTI)

East Mesa Well 58-30 was selected for two stimulation treatments: a conventional hydraulic fracture in a deep, low permeability interval, and a dendritic fracture in a shallow, high permeability interval of completion. The well selection, pre-stimulation evaluation, fracture treatment design, and post-stimulation evaluation are presented.

Not Available

1981-02-01T23:59:59.000Z

356

Technical and economic evaluation of selected compact drill rigs for drilling 10,000 foot geothermal production wells  

DOE Green Energy (OSTI)

This report summarizes the investigation and evaluation of several {open_quotes}compact{close_quotes} drill rigs which could be used for drilling geothermal production wells. Use of these smaller rigs would save money by reducing mobilization costs, fuel consumption, crew sizes, and environmental impact. Advantages and disadvantages of currently-manufactured rigs are identified, and desirable characteristics for the {open_quotes}ideal{close_quotes} compact rig are defined. The report includes a detailed cost estimate of a specific rig, and an evaluation of the cost/benefit ratio of using this rig. Industry contacts for further information are given.

Huttrer, G.W. [Geothermal Management Company, Inc., Frisco, CO (United States)

1997-11-01T23:59:59.000Z

357

Geothermal component test facility  

DOE Green Energy (OSTI)

A description is given of the East Mesa geothermal facility and the services provided. The facility provides for testing various types of geothermal energy-conversion equipment and materials under field conditions using geothermal fluids from three existing wells. (LBS)

Not Available

1976-04-01T23:59:59.000Z

358

Geothermal Technologies Program: Utah  

DOE Green Energy (OSTI)

Geothermal Technologies Program Utah fact sheet describes the geothermal areas and use in Utah, focusing on power generation as well as direct use, including geothermally heated greenhouses, swimming pools, and therapeutic baths.

Not Available

2005-06-01T23:59:59.000Z

359

Testing geopressured geothermal reservoirs in existing wells: Pauline Kraft Well No. 1, Nueces County, Texas. Final report  

DOE Green Energy (OSTI)

The Pauline Kraft Well No. 1 was originally drilled to a depth of 13,001 feet and abandoned as a dry hole. The well was re-entered in an effort to obtain a source of GEO/sup 2/ energy for a proposed gasohol manufacturing plant. The well was tested through a 5-inch by 2-3/8 inch annulus. The geological section tested was the Frio-Anderson sand of Mid-Oligocene age. The interval tested was from 12,750 to 12,860 feet. A saltwater disposal well was drilled on the site and completed in a Micocene sand section. The disposal interval was perforated from 4710 to 4770 feet and from 4500 to 4542 feet. The test well failed to produce water at substantial rates. Initial production was 34 BWPD. A large acid stimulation treatment increased productivity to 132 BWPD, which was still far from an acceptable rate. During the acid treatment, a failure of the 5-inch production casing occurred. The poor production rates are attributed to a reservoir with very low permeability and possible formation damage. The casing failure is related to increased tensile strain resulting from cooling of the casing by acid and from the high surface injection pressure. The location of the casing failure is now known at this time, but it is not at the surface. Failure as a result of a defect in a crossover joint at 723 feet is suspected.

Not Available

1981-01-01T23:59:59.000Z

360

Geothermal reservoir assessment: Cove Fort-Sulphurdale Unit. Final report, September 1977-July 1979  

DOE Green Energy (OSTI)

Three exploratory geothermal wells were drilled in the Cove Fort-Sulphurdale geothermal resource area in southwestern Utah to obtain new subsurface data for inclusion in the US DOE's geothermal reservoir assessment program. Existing data from prior investigations which included the drilling of an earlier exploratory well at the Cove Fort-Sulphurdale area was also provided. Two of the wells were abandoned before reaching target depth because of severe lost circulation and hole sloughing problems. The two completed holes reached depths of 5221 ft. and 7735 ft., respectively, and a maximum reservoir temperature of 353/sup 0/F at 7320 ft. was measured. The deepest well flow was tested at the rate of 47,000 lbs/h with a wellhead temperature of 200/sup 0/F and pressure of 3 psig. Based upon current economics, the Cove Fort-Sulphurdale geothermal resource is considered to be sub-commercial for the generation of electrical power. A synopsis is given of the exploratory drilling activities and results containing summary drilling, testing, geologic and geochemical information from four exploratory geothermal wells.

Ash, D.L.; Dondanville, R.F.; Gulati, M.S.

1979-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Exploration of Ulumbu geothermal field, Flores-east nusa tenggara, Indonesia  

SciTech Connect

This paper describes the progress made in developing geothermal resources at Ulumbu Flores, Indonesia for utilization mini geothermal power generation. Two deep exploratory wells drilling drilled by PLN confirmed the existence of the resources. The well measurement carried out during drilling and after completion of the well indicated that the major permeable zone at around 680 m depth and that this zone is a steam cap zone, which is likely to produce high enthalpy steam. The above information indicates that well ULB-01 will produce a mass flow at least 40 tonnes per hour, which will ensure a 3 MW (E) Ulumbu mini geothermal power plant.

Sulasdi, Didi

1996-01-26T23:59:59.000Z

362

Deep Production Well for Geothermal Direct-Use Heating of A Large Commercial Greenhouse, Radium Springs, Rio Grande Rift, New Mexico  

DOE Green Energy (OSTI)

Expansion of a large commercial geothermally-heated greenhouse is underway and requires additional geothermal fluid production. This report discusses the results of a cost-shared U.S. Department of Energy (DOE) and A.R. Masson, Inc. drilling project designed to construct a highly productive geothermal production well for expansion of the large commercial greenhouse at Radium Springs. The well should eliminate the potential for future thermal breakthrough from existing injection wells and the inducement of inflow from shallow cold water aquifers by geothermal production drawdown in the shallow reservoir. An 800 feet deep production well, Masson 36, was drilled on a US Bureau of Land Management (BLM) Geothermal Lease NM-3479 at Radium Springs adjacent to the A. R. Masson Radium Springs Farm commercial greenhouse 15 miles north of Las Cruces in Dona Ana County, New Mexico just west of Interstate 25 near the east bank of the Rio Grande. The area is in the Rio Grande rift, a tectonically-active region with high heat flow, and is one of the major geothermal provinces in the western United State.

James C. Witcher

2002-01-02T23:59:59.000Z

363

Environmental summary document for the Republic Geothermal, Inc. application for a geothermal loan guaranty project: 64 MW well field and 48 MW (net) geothermal power plant  

DOE Green Energy (OSTI)

A comprehensive review and analysis is provided of the environmental consequences of (1) guaranteeing a load for the completion of the 64 MW well field and the 48 MW (net) power plant or (2) denying a guaranteed load that is needed to finish the project. Mitigation measures are discussed. Alternatives and their impacts are compared and some discussion is included on unavoidable adverse impacts. (MHR)

Layton, D.W.; Powers, D.J.; Leitner, P.; Crow, N.B.; Gudiksen, P.H.; Ricker, Y.E.

1979-07-01T23:59:59.000Z

364

A study of production/injection data from slim holes and production wells at the Oguni Geothermal Field, Japan  

DOE Green Energy (OSTI)

Production and injection data from slim holes and large-diameter wells at the Oguni Geothermal Field, Japan, were examined in an effort to establish relationships (1) between productivity of large-diameter wells and slim holes, (2) between injectivity and productivity indices and (3) between productivity index and borehole diameter. The production data from Oguni boreholes imply that the mass production from large-diameter wells may be estimated based on data from slim holes. Test data from both large- and small-diameter boreholes indicate that to first order the productivity and the injectivity indices are equal. Somewhat surprisingly, the productivity index was found to be a strong function of borehole diameter; the cause for this phenomenon is not understood at this time.

Garg, S.K.; Combs, J.; Abe, M.

1996-03-01T23:59:59.000Z

365

Preliminary study of discharge characteristics of slim holes compared to production wells in liquid-dominated geothermal reservoirs  

DOE Green Energy (OSTI)

There is current interest in using slim holes for geothermal exploration and reservoir assessment. A major question that must be addressed is whether results from flow or injection testing of slim holes can be scaled to predict large diameter production well performance. This brief report describes a preliminary examination of this question from a purely theoretical point of view. The WELBOR computer program was used to perform a series of calculations of the steady flow of fluid up geothermal boreholes of various diameters at various discharge rates. Starting with prescribed bottomhole conditions (pressure, enthalpy), the WELBOR code integrates the equations expressing conservation of mass, momentum and energy (together with fluid constitutive properties obtained from the steam tables) upwards towards the wellhead using numerical techniques. This results in computed profiles of conditions (pressure, temperature, steam volume fraction, etc.) as functions of depth within the flowing well, and also in a forecast of wellhead conditions (pressure, temperature, enthalpy, etc.). From these results, scaling rules are developed and discussed.

Pritchett, J.W. [S-Cubed, La Jolla, CA (United States)

1993-06-01T23:59:59.000Z

366

Testing geopressured geothermal reservoirs in existing wells. Final report P. R. Girouard Well No. 1, Lafayette Parish, Louisiana. Volume I. Completion and testing  

DOE Green Energy (OSTI)

The P.R. Girouard No. 1 Well, located approximately 10 miles southeast of Lafayette, Louisiana, was the fourth successful test of a geopressured-geothermal aquifer under the Wells of Opportunity program. The well was tested through 3-1/2 inch tubing set on a packer at 14,570 feet without major problems. The geological section tested was the Oligocene Marginulina Texana No. 1 sand of upper Frio age. The interval tested was from 14,744 to 14,819 feet. Produced water was piped down a disposal well perforated from 2870 to 3000 feet in a Miocene saltwater sand. Four flow tests were conducted for sustained production rates of approximately 4000 BWPD to approximately 15,000 BWPD. The highest achieved, during a fifth short test, was 18,460 BWPD. The test equipment was capable of handling higher rates. The gas-to-water ratio was relatively uniform at approximately 40 SCF/bbl. The heating value of the gas is 970 Btu/SCF. The reservoir tests show that is is doubtful that this well would sustain production rates over 10,000 BWPD for any lengthy period from the sand zone in which it was completed. This limited flow capacity is due to the well's poor location in the reservoir and is not a result of any production deficiencies of the Marginulina Texana sand.

Not Available

1981-01-01T23:59:59.000Z

367

Geothermal FIT Design: International Experience and U.S. Considerations  

Science Conference Proceedings (OSTI)

Developing power plants is a risky endeavor, whether conventional or renewable generation. Feed-in tariff (FIT) policies can be designed to address some of these risks, and their design can be tailored to geothermal electric plant development. Geothermal projects face risks similar to other generation project development, including finding buyers for power, ensuring adequate transmission capacity, competing to supply electricity and/or renewable energy certificates (RECs), securing reliable revenue streams, navigating the legal issues related to project development, and reacting to changes in existing regulations or incentives. Although FITs have not been created specifically for geothermal in the United States to date, a variety of FIT design options could reduce geothermal power plant development risks and are explored. This analysis focuses on the design of FIT incentive policies for geothermal electric projects and how FITs can be used to reduce risks (excluding drilling unproductive exploratory wells).

Rickerson, W.; Gifford, J.; Grace, R.; Cory, K.

2012-08-01T23:59:59.000Z

368

T-F and S/DOE Gladys McCall No. 1 well, Cameron Parish, Louisiana. Geopressured-geothermal well report, Volume II. Well workover and production testing, February 1982-October 1985. Final report. Part 1  

DOE Green Energy (OSTI)

The T-F and S/DOE Gladys McCall No. 1 well was the fourth in a series of wells in the DOE Design Wells Program that were drilled into deep, large geopressured-geothermal brine aquifers in order to provide basic data with which to determine the technological and economic viability of producing energy from these unconventional resources. This brine production well was spudded on May 27, 1981 and drilling operations were completed on November 2, 1981 after using 160 days of rig time. The well was drilled to a total depth of 16,510 feet. The target sands lie at a depth of 14,412 to 15,860 feet in the Fleming Formation of the lower Miocene. This report covers well production testing operations and necessary well workover operations during the February 1982 to October 1985 period. The primary goals of the well testing program were: (1) to determine reservoir size, shape, volume, drive mechanisms, and other reservoir parameters, (2) to determine and demonstrate the technological and economic viability of producing energy from a geopressured-geothermal brine aquifer through long-term production testing, and (3) to determine problem areas associated with such long-term production, and to develop solutions therefor.

Not Available

1985-01-01T23:59:59.000Z

369

Cementing of geothermal wells. Progress report No. 11, October-December 1978  

DOE Green Energy (OSTI)

In a one month shake-down test at East Mesa, 32 cement formulations were exposed to flowing brine at 150/sup 0/C and 95 psig. Based upon the results from this test, 15 formulations were selected for evaluation in a 2 year test. Experimental work indicates that none of the cements under consideration cause severe corrosion to steel casing. Compared with the possible corrosive attack on the steel casing by the geothermal environment, the corrosive effects of the cement are minimal. A promising cementing composition has been sent to the National Bureau of Standards for additional tests, and at least one more composition will be submitted. Pumpability tests performed on hydrothermal cements indicate several formulations that are pumpable for at least 2 hr at 316/sup 0/C. Polymer concrete samples containing 50 wt% styrene - 35 wt% acrylonitrile - 5 wt% acrylamide - 10 wt% divinyl benzene have not shown any reduction in strength after exposure to 25% brine at 240/sup 0/C for 8 months. This is the highest strength formulation to date and is the first formulation that has not exhibited any strength reduction after brine exposure. Strengths of 204 MPa and 162 MPa were measured at 20/sup 0/ and 150/sup 0/C, respectively, after 8 months in brine.

Steinberg, M.; Kukacka, L.E.

1979-06-01T23:59:59.000Z

370

Identification of Hydrochemical Processes in the Screen Environment in Shallow Geothermal Wells from Gardermoen.  

E-Print Network (OSTI)

??Groundwater wells are often clogged by incrustation, which has a negative impact on well specific capacity. Chemical and biological incrustation formed by precipitation of minerals (more)

Woyessa, Abeya Olana

2012-01-01T23:59:59.000Z

371

Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA  

Science Conference Proceedings (OSTI)

Three wells have been drilled by the Los Angeles Department of Water and Power at the Coso Hot Springs KGRA. A long-term flow test was conducted involving one producing well (well 43-7), one injector (well 88-1), and two observation wells (well 66-6 and California Energy Cos well 71A-7). This paper presents the equipment and techniques involved and the results from the long-term test conducted between December 1985 and February 1986. 1 tab., 9 figs.

Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.; Gentner, R.

1987-01-20T23:59:59.000Z

372

GEOTHERMAL RESERVOIR SIMULATIONS WITH SHAFT79  

E-Print Network (OSTI)

that well blocks must geothermal reservoir studies, paperof Califomia. LBL-10066 GEOTHERMAL RESERVOIR SIMULATIONSbe presented at the Fifth Geothermal Reservoir Engineering

Pruess, Karsten

2012-01-01T23:59:59.000Z

373

Geothermal handbook. Geothermal project, 1976. [Ecological effects of geothermal resources development  

DOE Green Energy (OSTI)

The geothermal program of Fish and Wildlife Service, U.S. Dept. of Interior, aims to develop ecologically sound practices for the exploration, development, and management of geothermal resources and the identification of the biological consequences of such development so as to minimize adverse effects on fish and wildlife resources. This handbook provides information about the ecological effects of geothermal resource development. Chapters are included on US geothermal resources; geothermal land leasing; procedures for assessing the effects on fish and game; environmental impact of exploratory and field development operations; and wildlife habitat improvement methods for geothermal development.

Not Available

1976-06-01T23:59:59.000Z

374

Imperial County geothermal development semi-annual report, October 1, 1980-March 31, 1981  

DOE Green Energy (OSTI)

The current geothermal progress in Imperial County is reported. Three areas are reported: Geothermal Administration, Geothermal Planning, and other Geothermal Activities. Geothermal Administration addresses the status of the Imperial Valley Environmental Project (IVEP) transfer, update of the Geothermal Resource Center, and findings of Geothermal field inspections. In addition, the cooperative efforts between industry and the County; Master EIR for the Salton Sea KGRA and the resurveying of the subsidence detection network are covered. Geothermal Planning addresses a Board of Supervisor action on the Union Oil Geothermal Production Permit for 16 wells in the Salton Sea KGRA and a permit for Southern California Edison 10 megawatts power plant in the Salton Sea KGRA. Planning Commission action covers: Amendment of Magma Power's 49 megawatts Geothermal Production Permit to 28 megawatt power plant and relocation of the plant and wells within the Salton Sea KGRA; Exploration permit to Occidental Geothermal for four exploratory wells in East Brawley; Geothermal Production Permit to Southern California Edison to operate a 10 megawatt power plant in the Salton Sea KGRA; and Geothermal production permit to Union Oil for 16 production-injection wells in the Salton Sea KGRA. Lastly, EIR exemptions to CEQA were granted to Chevron for 70 shallow temperature observation holes and Union for fifteen. Other Geothermal Activity addresses the County Direct Heat Development study; the solicitation for district heating and cooling proposals; the new Geothermal Class II-1 disposal site; the DOE Region IX meeting in Tucson; and USGA designating a new KGRA, the East Brawley KGRA, the Westmorland KGRA, and revising the southern border of the Salton Sea KGRA.

Not Available

1981-01-01T23:59:59.000Z

375

Geothermal reservoir at Tatapani Geothermal field, Surguja district, Madhya Pradesh, IN  

SciTech Connect

The Tatapani Geothermal field, located on the Son-Narmada mega lineament is one of the most intense geothermal manifestation, with hot spring temperature of 98c. in Central India. 21 Exploratory and thermal gradient boreholes followed by 5 production wells for proposed 300 KWe binary cycle power plant, have revealed specific reservoir parameters of shallow geothermal reservoir of 110c in upper 350 m of geothermal system and their possible continuation to deeper reservoir of anticipated temperature of 160 10c. Testing of five production wells done by Oil and Natural Gas Corporation concurrently with drilling at different depths and also on completion of drilling, have established feeder zones of thermal water at depth of 175-200 m, 280-300 m, maximum temperature of 112.5c and bottom hole pressure of 42 kg/cm. Further interpretation of temperature and pressure profiles, injection test, well head discharges and chemical analysis data has revealed thermal characteristics of individual production wells and overall configuration of .thermal production zones with their permeability, temperature, and discharge characteristics in the shallow thermal reservoir area. Well testing data and interpretation of reservoir parameters therefrom, for upper 350 m part of geothermal system and possible model of deeper geothermal reservoir at Tatapani have been presented in the paper.

Pitale, U.L.; Sarolkar, P.B.; Rawat, H.S.; Shukia, S.N.

1996-01-24T23:59:59.000Z

376

S-cubed geothermal technology and experience  

DOE Green Energy (OSTI)

Summaries of ten research projects are presented. They include: equations describing various geothermal systems, geohydrological environmental effects of geothermal power production, simulation of linear bench-scale experiments, simulation of fluid-rock interactions in a geothermal basin, geopressured geothermal reservoir simulator, user-oriented geothermal reservoir simulator, geothermal well test analyses, geothermal seismic exploration, high resolution seismic mapping of a geothermal reservoir, experimental evaluation of geothermal well logging cables, and list of publications. (MHR)

Not Available

1976-04-01T23:59:59.000Z

377

Mexican-American cooperative program at the Cerro Prieto geothermal field: recent results of the well-drilling program at Cerro Prieto  

DOE Green Energy (OSTI)

The results of the 1980 and 1981 well drilling activities at the Cerro Prieto geothermal field are summarized. Details are given on the new series of deeper wells completed in the western (older) part of the field (Cerro Prieto I), and on the development and step-out wells drilled in the eastern part of the field (Cerro Prieto II and III). Production characteristics of on-line and standby wells are discussed. Recent changes in well completion procedures are also described.

Dominguez A, B.; Lippmann, M.J.; Bermejo M.; F.

1981-12-01T23:59:59.000Z

378

Vale exploratory slimhole: Drilling and testing  

SciTech Connect

During April-May, 1995, Sandia National Laboratories, in cooperation with Trans-Pacific Geothermal Corporation, drilled a 5825{prime} exploratory slimhole (3.85 in. diameter) in the Vale Known Geothermal Resource Area (KGRA) near Vale, Oregon. This well was part of Sandia`s program to evaluate slimholes as a geothermal exploration tool. During drilling we performed several temperature logs, and after drilling was complete we performed injection tests, bailing from a zone isolated by a packer, and repeated temperature logs. In addition to these measurements, the well`s data set includes: 2714{prime} of continuous core (with detailed log); daily drilling reports from Sandia and from drilling contractor personnel; daily drilling fluid records; numerous temperature logs; pressure shut-in data from injection tests; and comparative data from other wells drilled in the Vale KGRA. This report contains: (1) a narrative account of the drilling and testing, (2) a description of equipment used, (3) a brief geologic description of the formation drilled, (4) a summary and preliminary interpretation of the data, and (5) recommendations for future work.

Finger, J.T.; Jacobson, R.D.; Hickox, C.E.

1996-06-01T23:59:59.000Z

379

Numerical simulation study of silica and calcite dissolution around a geothermal well by injecting high pH solutions with chelating agent.  

E-Print Network (OSTI)

Thirty-Second Workshop on Geothermal Reservoir Engineering,media: Applications to geothermal injectivity and CO 2geology of the Desert Peak Geothermal Field: A case history,

Xu, Tianfu

2009-01-01T23:59:59.000Z

380

Flint Geothermal Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Flint Geothermal Geothermal Area Flint Geothermal Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Flint Geothermal Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (9) 10 References Area Overview Geothermal Area Profile Location: Colorado Exploration Region: Rio Grande Rift GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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381

Stress and Permeability Heterogeneity within the Dixie Valley Geothermal Reservoir: Recent Results from Well 82-5  

DOE Green Energy (OSTI)

We collected borehole televiewer, temperature and flowmeter logs and conducted a hydraulic fracturing test in a well (82-5) that penetrated the SFZ within the known boundaries of the geothermal field but which failed to encounter significant permeability. Although stuck drill pipe prevented direct access to the SFZ, borehole breakouts and cooling cracks indicated a {approximately}90 degree rotation in the azimuth of the least horizontal principal stress (Shmin) in well 82-5 at about 2.7 km depth. This rotation, together with the low (Shmin) magnitude measured at 2.5 km depth in well 82-5, is most readily explained through the occurrences of one or more normal faulting earthquakes in the hanging wall of the SFZ in the northern part of the reservoir. The orientation of (Shmin) below 2.7 km (i.e., {approximately}20 to 50 m above the top of the SFZ) is such that both the overall SFZ and natural fractures directly above the SFZ are optimally oriented for normal faulting failure. If these fracture and stress orient ations persist into the SFZ itself, then the existence of a local stress relief zone (i.e., anormalously high (Shmin) magnitude) is the most likely explanation for the very low fault zone permeability encountered in well 82-5.

S. H. Hickman; M. D. Zoback; C. A. Barton; R. Benoit; J. Svitek; R. Summers

1999-12-01T23:59:59.000Z

382

New Mexico State University geothermal production well. Technical completion report, January 1, 1978-December 31, 1979  

DOE Green Energy (OSTI)

The detailed technical specifications for the production well, the lithologic sample analysis, and a suite of geophysical logs, consisting of electrical resistivity, spontaneous potential, gamma ray and neutron, are presented. (MHR)

Chaturvedi, L.

1981-01-01T23:59:59.000Z

383

Testing geopressured geothermal reservoirs in existing wells. Final report: Saldana well No. 2, Zapata County, Texas. Volume II. Well test data  

DOE Green Energy (OSTI)

The following are included: field test data, compiled and edited raw data, time/pressure data, tentative method of testing for hydrogen sulfide in natural gas using length of stain tubes, combined sample log, report on reservoir fluids study, well test analysis, smoothing with weighted moving averages, chemical analysis procedures, scale monitoring report, sand detector strip charts, and analyses of water and gas samples. (MHR)

Not Available

384

Geothermics of Nile delta and southeast Mediterranean: Investigation and geothermal energy potential  

Science Conference Proceedings (OSTI)

The authors collected 289 temperature readings from 66 exploratory wells randomly distributed in an area about 57,000 km{sup 2} from different rock units of Tertiary and Quaternary ages. The bottom-hole temperature (BHT) readings were corrected using an empirical equation based on actual static formation temperatures collected from the study area. The authors modified the Fertl and Wichmann method to apply to the study area. If the Fertl and Wichmann curve is applied, readings can be corrected using a deduced relation. The geothermal gradient for each well calculated used the best-fit method utilizing all recorded BHTs in that well. A new geothermal gradient map was constructed using the corrected BHT values. A genetic relationship between the geothermal gradient and lithology, tectonic setup, gas saturation, and water saturation of the subsurface formations in the Nile delta and southeast Mediterranean area was sought. Isothermal maps at different depths in the study area were constructed. Areas of relatively high subsurface temperature were delineated. The Abu Madi gas field as a case study for geothermal behavior was emphasized. The geothermal reservoirs in the study area as possible new and renewable energy resources were defined and classified as low-temperature reservoirs. Two geothermal reservoirs have been recorded: a shallow one associated with Mit Ghamr-El Wastani rock units and a deep one associated with abu Madi-Qawassim Formations.

Zein El-Din, M.Y.; Zaghloul, Z.M.; Khidr, I.H. (Al Azhar Univ., Cairo (Egypt))

1988-08-01T23:59:59.000Z

385

Interpretation of pre- and post-fracturing well tests in a geothermal reservoir  

SciTech Connect

Pre- and post-fracturing well tests in TG-2 well drilled next to the Matsukawa field are interpreted for evaluating effects of a massive hydraulic fracturing treatment. The interpreted data include multiple-step rate tests, a two-step rate test, and falloff tests. Pressure behaviors of massive hydraulic fracturing are matched by a simulator of dynamic fracture option. Fracture parting pressures can be evaluated from the multiple-step rate test data. The multiple-step rates during the massive hydraulic fracturing treatment show that multiple fractures have been induced in sequence. Although the pre-fracturing falloff tests are too short, fracture propagation can be evaluated qualitatively from the falloff data. Interpretation of the falloff test immediately after the MHF suggests that extensive fractures have been created by the MHF, which is verified by simulation. The post-fracturing falloff tests show that the fractures created by the MHF have closed to a great degree.

Arihara, Norio; Fukagawa, Hiroshi; Hyodo, Masami; Abbaszadeh, Maghsood

1995-01-26T23:59:59.000Z

386

Evaluation of testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho  

DOE Green Energy (OSTI)

Evaluating the Raft River and Boise, Idaho, resources by pump and injection tests require information on the geology, geochemistry, surficial and borehole geophysics, and well construction and development methods. Nonideal test conditions and a complex hydrogeologic system prevent the use of idealized mathematical models for data evaluation in a one-phase fluid system. An empirical approach is successfully used since it was observed that all valid pump and injection well pressure data for constant discharge tests plotted as linear trends on semilogarithmic plots of borehole pressure versus time since pumping or injection began. Quantification of the pressure response prior to 600 minutes is not always possible. Short-duration (< 24-hour) injection or pump tests are conducted with the drilling rig equipment, and long-duration (21-day) injection and pump tests are then conducted with the permanent pumping facilities. Replicate instrumentation for pressure, temperature, and flow rates is necessary to ensure quality data. Water quality and monitor well data are also collected.

Allman, D.W.; Goldman, D.; Niemi, W.L.

1979-01-01T23:59:59.000Z

387

Evaluation of testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho  

DOE Green Energy (OSTI)

Evaluating the Raft River and Boise, Idaho, resources by pump and injection tests requires information on the geology, geochemistry, surficial and borehole geophysics, and well construction and development methods. Nonideal test conditions and a complex hydrogeologic system prevent the use of idealized mathematical models for data evaluation in a one-phase fluid system. An empirical approach is successfully used since it was observed that all valid pump and injection well pressure data for constant discharge tests plotted as linear trends on semilogarithmic plots of borehole pressure versus time since pumping or injection began. Quantification of the pressure response prior to 600 minutes is not always possible. Short-duration (< 24-hour) injection or pump tests are conducted with the drilling rig equipment, and long-duration (21-day) injection and pump tests are then conducted with the permanent pumping facilities. Replicate instrumentation for pressure, temperature, and flow rates are necessary to ensure quality data. Water quality and monitor well data are also collected.

Allman, D.W.; Goldman, D.; Niemi, W.L.

1979-01-01T23:59:59.000Z

388

Geothermal Power Production from Brine Co-Produced from Oil and Gas Wells  

Science Conference Proceedings (OSTI)

Millions of barrels of water (brine) per day are co-produced from oil and gas wells. Currently, the oil and gas industry views this as a waste stream that costs millions of dollars per year to manage, through either treatment or disposal/reinjection. A significant percentage of the co-produced brine, however, flows at sufficient rate and temperature to generate power using a binary power plant, and this is viewed by some as a potential value stream. The value lies in that the co-produced water is "free" ...

2012-04-30T23:59:59.000Z

389

Evaluation of NEPA-based environmental commitments at four geopressured geothermal design wells  

DOE Green Energy (OSTI)

This study verifies the implementation and effectiveness of environmental mitigation and monitoring commitments made by the US Department of Energy in National Environmental Policy Act documents (Environmental Assessments (EAs)) prepared for four geopressure design well projects, one in Texas and three in Louisiana. The evaluation was based on visits to the project sites conducted by Oak Ridge National Laboratory staff in August 1982 and April 1983, and on a review of monitoring and project activity reports provided by DOE subcontractors. Subcontractors responsible for drilling and testing activities at the well sites adequately implemented most of the mitigation measures described in each project's EA. Exceptions included the lack of impermeable liners for drilling mud pits at three sites and the lack of a ring levee at one site. Water quality, noise, and air monitoring were not performed as strictly as outlined in the EAs. A review of the data collected to date indicates that no significant environmental degradation has occurred. Additional or future monitoring needs, especially with regard to subsidence, microseismicity, and groundwater and soil sampling were recommended.

Reed, A.W.; Hunsaker, D.B. Jr.; Roop, R.D.; Webb, J.W.

1983-01-01T23:59:59.000Z

390

Gulf Coast geopressured-geothermal program summary report compilation. Volume 2-A: Resource description, program history, wells tested, university and company based research, site restoration  

DOE Green Energy (OSTI)

The US Department of Energy established a geopressured-geothermal energy program in the mid 1970`s as one response to America`s need to develop alternate energy resources in view of the increasing dependence on imported fossil fuel energy. This program continued for 17 years and approximately two hundred million dollars were expended for various types of research and well testing to thoroughly investigate this alternative energy source. This volume describes the following studies: Geopressured-geothermal resource description; Resource origin and sediment type; Gulf Coast resource extent; Resource estimates; Project history; Authorizing legislation; Program objectives; Perceived constraints; Program activities and structure; Well testing; Program management; Program cost summary; Funding history; Resource characterization; Wells of opportunity; Edna Delcambre No. 1 well; Edna Delcambre well recompletion; Fairfax Foster Sutter No. 2 well; Beulah Simon No. 2 well; P.E. Girouard No. 1 well; Prairie Canal No. 1 well; Crown Zellerbach No. 2 well; Alice C. Plantation No. 2 well; Tenneco Fee N No. 1 well; Pauline Kraft No. 1 well; Saldana well No. 2; G.M. Koelemay well No. 1; Willis Hulin No. 1 well; Investigations of other wells of opportunity; Clovis A. Kennedy No. 1 well; Watkins-Miller No. 1 well; Lucien J. Richard et al No. 1 well; and the C and K-Frank A. Godchaux, III, well No. 1.

John, C.J.; Maciasz, G.; Harder, B.J.

1998-06-01T23:59:59.000Z

391

Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Details Activities (5) Areas (2) Regions (0) Abstract: Studies of the geology, geochemistry of thermal waters, and of one exploratory geothermal well show that two related hot spring systems discharge in Canon de San Diego at Soda Dam (48°C) and Jemez Springs (72°C). The hot springs discharge from separate strands of the Jemez fault zone which trends northeastward towards the center of Valles Caldera. Exploration drilling to Precambrian basement beneath Jemez Springs

392

Advanced high-temperature lightweight foamed cements for geothermal well completions  

DOE Green Energy (OSTI)

Foamed cement slurries that were prepared by mixing a cementitious material having a Class H cement-to-silica flour ratio of 1.0 in conjunction with a alpha-olefin sulfate foam surfactant and a coconut diethanolamide foam stabilizer were exposed in an autoclave at a temperature of 300/sup 0/C and a hydrostatic pressure of 2000 psi (13.79 MPa). One lightweight slurry having a density of 9.61 lb/gal (1.15 g/cc) yielded a cellular cement having a compressive strength at 24 hr of >1000 psi (6.9 MPa) and a water permeability of approx.10/sup -3/ darcys. The factors responsible for the attainment of these mechanical and physical properties were identified to be well-crystallized truscottite phases and a uniform distribution of discrete fine bubbles. The addition of graphite fiber reinforcement for the cement matrix significantly suppressed any segregation of foam caused by thermal expansion of the air bubbles and further improved the mechanical characteristics of the cured cements.

Sugama, T.; Kukacka, L.E.; Galen, B.G.

1986-04-01T23:59:59.000Z

393

Session: Geopressured-Geothermal  

SciTech Connect

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Overview of Geopressured-Geothermal'' by Allan J. Jelacic; ''Geothermal Well Operations and Automation in a Competitive Market'' by Ben A. Eaton; ''Reservoir Modeling and Prediction at Pleasant Bayou Geopressured-Geothermal Reservoir'' by G. Michael Shook; ''Survey of California Geopressured-Geothermal'' by Kelly Birkinshaw; and ''Technology Transfer, Reaching the Market for Geopressured-Geothermal Resources'' by Jane Negus-de Wys.

Jelacic, Allan J.; Eaton, Ben A.; Shook, G. Michael; Birkinshaw, Kelly; Negus-de Wys, Jane

1992-01-01T23:59:59.000Z

394

Development of improved gaskets, sealants and cables for use in geothermal well logging equipment. Final summary report  

DOE Green Energy (OSTI)

The inventigation of materials which could be used for fabricating elastomeric seals for geothermal well logging equipment is described. The seals were to be made either from a methylphenylcarborane-siloxane base gum stock, or from new fluoroelastomer compounds synthesized at Hughes Aircraft Company. A literature search was made to obtain data on carborane-siloxane polymers, synthesis routes for fluorinated elastomers and high temperature hydrolytic stability tests of elastomers. Information was obtained on the first two topics, but very little was available on hydrolysis testing. A number of compounds, based on carborane-siloxane, were formulated and cured. Compression set, hardness and shrinkage tests with postcure variations were made on the most promising formulations. A simple hydrolytic stability test at 275/sup 0/C (525/sup 0/F) and 830 psi was developed which indicated that both the carborane and siloxane bonds were easily broken after short exposure periods. Thermodynamic calculatons indicated that this result could be expected. Because of the agreement between empirical and theoretical data, work on the carborane-siloxanes was discontinued after approximately the first year. Synthesis efforts to produce a highly fluorinated elastomer based on perfluorolkylene oxide were continued through the entrie program. None of these routes produced a satisfactory elastomer.

Schwartz, S.; Basiulis, D.; Leyden, R.; Landis, A.

1978-10-01T23:59:59.000Z

395

Geothermal Outreach and Project Financing  

DOE Green Energy (OSTI)

The ?Geothermal Outreach and Project Financing? project substantially added to the understanding of geothermal resources, technology, and small business development by both the general public as well as those in the geothermal community.

Elizabeth Battocletti

2006-04-06T23:59:59.000Z

396

A study of production/injection data from slim holes and large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan  

DOE Green Energy (OSTI)

Production and injection data from nine slim holes and sixteen large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan were analyzed in order to establish relationships (1) between injectivity and productivity indices, (2) between productivity/injectivity index and borehole diameter, and (3) between discharge capacity of slim holes and large-diameter wells. Results are compared with those from the Oguni and Sumikawa fields. A numerical simulator (WELBOR) was used to model the available discharge rate from Takigami boreholes. The results of numerical modeling indicate that the flow rate of large-diameter geothermal production wells with liquid feedzones can be predicted using data from slim holes. These results also indicate the importance of proper well design.

Garg, S.K. [Maxwell Federal Div., Inc., San Diego, CA (United States)] [Maxwell Federal Div., Inc., San Diego, CA (United States); Combs, J. [Geo-Hills Associates, Los Altos Hills, CA (United States)] [Geo-Hills Associates, Los Altos Hills, CA (United States); Azawa, Fumio [Idemitsu Kosan Co. Ltd., Tokyo (Japan)] [Idemitsu Kosan Co. Ltd., Tokyo (Japan); Gotoh, Hiroki [Idemitsu Oita Geothermal Co. Ltd., Oita (Japan)] [Idemitsu Oita Geothermal Co. Ltd., Oita (Japan)

1996-11-01T23:59:59.000Z

397

Ratio of produced gas to produced water from DOE's EDNA Delcambre No. 1 geopressured-geothermal aquifer gas well test  

DOE Green Energy (OSTI)

A paper presented by the Institute of Gas Technology (IGT) at the Third Geopressured-Geothermal Energy Conference hypothesized that the high ratio of produced gas to produced water from the No. 1 sand in the Edna Delcambre No. 1 well was due to free gas trapped in pores by imbibition over geological time. This hypothesis was examined in relation to preliminary test data which reported only average gas to water ratios over the roughly 2-day steps in flow rate. Subsequent public release of detailed test data revealed substantial departures from the previously reported computer simulation results. Also, data now in the public domain reveal the existence of a gas cap on the aquifier tested. This paper describes IGT's efforts to match the observed gas/water production with computer simulation. Two models for the occurrence and production of gas in excess of that dissolved in the brine have been used. One model considers the gas to be dispersed in pores by imbibition, and the other model considers the gas as a nearby free gas cap above the aquifier. The studies revealed that the dispersed gas model characteristically gave the wrong shape to plots of gas production on the gas/water ratio plots such that no reasonable match to the flow data could be achieved. The free gas cap model gave a characteristically better shape to the production plots and could provide an approximate fit to the data of the edge of the free gas cap is only about 400 feet from the well.Because the geological structure maps indicate the free gas cap to be several thousand feet away and the computer simulation results match the distance to the nearby Delcambre Nos. 4 and 4A wells, it appears that the source of the excess free gas in the test of the No. 1 sand may be from these nearby wells. The gas source is probably a separate gas zone and is brought into contact with the No. 1 sand via a conduit around the No. 4 well.

Rogers, L.A.; Randolph, P.L.

1979-01-01T23:59:59.000Z

398

Be in the Salton Sea Geothermal System, California (USA): Salton Sea Scientific Drilling Project, California State 2-14 well: Final report  

DOE Green Energy (OSTI)

The Salton Sea Geothermal System lies in the old Colorado River Delta, where sediments have been metamorphosed by hydrothermal processes. Fluids, from well Fee No. 5 and deep hole SSSDP California State 2-14, as well as rocks from the deep hole were studied for /sup 10/Be and /sup 9/Be. In the solid samples /sup 10/Be concentration ranges from 29 to 259 /times/ 10/sup 6/ atom/g and /sup 9/Be from 0.49 to 2.52 ppM. The /sup 10/Be concentration in the geothermal waters ranges from 2 /times/ 10/sup 3/ to 2.9 /times/ 10/sup 6/ atom/g and /sup 9/Be from 0.7 to 16.6 ppB. Compared to the steady-state inventory which represents the quantity of /sup 10/Be expected from rain deposition alone (/approximately/1 /times/ 10/sup 12/ atom/cm/sup 2/), the /sup 10/Be inventory in the deep core is 3 orders of magnitude higher (>1 /times/ 10/sup 15/ atom/cm/sup 2/). This indicates that most /sup 10/Be is inherited and that the sediments hosting the geothermal field down to 3250m are young, less than few million year old. /sup 10/Be and /sup 9/Be Kds decrease from surface to bottom (3333 to 48 and 727 to 393, respectively) expressing the strong leaching effect of the solid material by the geothermal waters. This process is more active at depth where pH is <5.3 and salinity high (approx. =25%). Compared to other natural systems, Salton Sea Geothermal fluids are strongly enriched in /sup 10/Be and /sup 9/Be. Finally, contamination has been observed in the fluids samples and we developed a tool that is helping in detecting which samples are contaminated.

Valette-Silver, N.J.

1988-06-01T23:59:59.000Z

399

Geothermal reservoir assessment case study: Northern Dixie Valley, Nevada  

DOE Green Energy (OSTI)

Two 1500 foot temperature gradient holes and two deep exploratory wells were drilled and tested. Hydrologic-hydrochemical, shallow temperature survey, structural-tectonic, petrologic alteration, and solid-sample geochemistry studies were completed. Eighteen miles of high resolution reflection seismic data were gathered over the area. The study indicates that a geothermal regime with temperatures greater than 400/sup 0/F may exist at a depth of approximately 7500' to 10,000' over an area more than ten miles in length.

Denton, J.M.; Bell, E.J.; Jodry, R.L.

1980-11-01T23:59:59.000Z

400

Numerical simulation study of silica and calcite dissolution around a geothermal well by injecting high pH solutions with chelating agent.  

SciTech Connect

Dissolution of silica, silicate, and calcite minerals in the presence of a chelating agent (NTA) at a high pH has been successfully performed in the laboratory using a high-temperature flow reactor. The mineral dissolution and porosity enhancement in the laboratory experiment has been reproduced by reactive transport simulation using TOUGHREACT. The chemical stimulation method has been applied by numerical modeling to a field geothermal injection well system, to investigate its effectiveness. Parameters from the quartz monzodiorite unit at the Enhanced Geothermal System (EGS) site at Desert Peak (Nevada) were used. Results indicate that the injection of a high pH chelating solution results in dissolution of both calcite and plagioclase minerals, and avoids precipitation of calcite at high temperature conditions. Consequently reservoir porosity and permeability can be enhanced especially near the injection well.

Xu, Tianfu; Rose, Peter; Fayer, Scott; Pruess, Karsten

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Geothermal/Exploration | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Exploration Geothermal/Exploration < Geothermal(Redirected from Exploration) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Exploration General Techniques Tree Techniques Table Regulatory Roadmap NEPA (120) Geothermal springs along Yellowstone National Park's Firehole River in the cool air of autumn. The world's most environmentally sensitive geothermal features are protected by law. Geothermal Exploration searches the earth's subsurface for geothermal resources that can be extracted for the purpose of electricity generation. A geothermal resource is as commonly a volume of hot rock and water, but in the case of EGS, is simply hot rock. Geothermal exploration programs

402

Correlation of the Na/K ratio in geothermal well waters with the thermodynamic properties of low albite and potash feldspar  

DOE Green Energy (OSTI)

The Na/K ratio in geothermal well waters provides a better estimate of the relative stability of low albite and potash feldspar than do predictions from calorimetry and high temperature phase equilibria. The calculated saturation indices from field data for low albite, potash feldspar suggest that [Delta]G[sub f,298][sup o] for the latter should be revised to [minus]3748.6[plus minus]3.7 kJ.mol[sup [minus]1].

Apps, J.A.; Chang, G.M.

1992-03-01T23:59:59.000Z

403

Steamboat Hills exploratory slimhole: Drilling and testing  

DOE Green Energy (OSTI)

During July-September, 1993, Sandia National Laboratories, in cooperation with Far West Capital, drilled a 4000 feet exploratory slimhole (3.9 inch diameter) in the Steamboat Hills geothermal field near Reno, Nevada. This well was part of Sandia`s program to evaluate slimholes as a geothermal exploration tool. During and after drilling the authors performed four series of production and injection tests while taking downhole (pressure-temperature-spinner) and surface (wellhead pressure and temperature, flow rate) data. In addition to these measurements, the well`s data set includes: continuous core (with detailed log); borehole televiewer images of the wellbore`s upper 500 feet; daily drilling reports from Sandia and from drilling contractor personnel; daily drilling fluid record; numerous temperature logs; and comparative data from production and injection wells in the same field. This report contains: (1) a narrative account of the drilling and testing, (2) a description of equipment used, (3) a brief geologic description of the formation drilled, (4) a summary and preliminary interpretation of the data, and (5) recommendations for future work.

Finger, J.T.; Jacobson, F.D.; Hickox, C.E.; Eaton, R.R.

1994-10-01T23:59:59.000Z

404

California Division of Oil, Gas, and Geothermal Resources - GIS...  

Open Energy Info (EERE)

Division of Oil, Gas, and Geothermal Resources - GIS and Well data The California Division of Oil, Gas, and Geothermal Resources contains oil, gas, and geothermal data for the...

405

Property:GeothermalDevelopmentPhases | Open Energy Information  

Open Energy Info (EERE)

GeothermalDevelopmentPhases GeothermalDevelopmentPhases Jump to: navigation, search Property Name GeothermalDevelopmentPhases Property Type Page Pages using the property "GeothermalDevelopmentPhases" Showing 25 pages using this property. (previous 25) (next 25) B BLM-NV-WN-ES-08-01-1310, NV-020-08-01 + Geothermal/Power Plant + C CA-017-05-051 + Geothermal/Well Field + CA-170-02-15 + Geothermal/Exploration + CA-650-2005-086 + Geothermal/Exploration + CA-670-2010-CX + Geothermal/Exploration + CA-96062042 + Geothermal/Power Plant +, Geothermal/Well Field +, Geothermal/Transmission + D DOE-EA-1116 + Geothermal/Power Plant +, Geothermal/Well Field +, Geothermal/Transmission + DOE-EA-1621 + Geothermal/Power Plant + DOE-EA-1676 + Geothermal/Power Plant + DOE-EA-1733 + Geothermal/Well Field +

406

Characterization of the geothermal resource at Lackland AFB, San Antonio, Texas. Phase I report  

DOE Green Energy (OSTI)

The geothermal resource under Lackland Air Force Base (AFB), San Antonio, Texas was studied. It is the conclusion of the investigators that a geothermal well drilled at the site recommended by this study has a high probability of delivering geothermal fluids in sufficient quantity and at adequate temperatures to support a projected space and domestic hot water heating system. An exploratory production well location is recommended in the southwest sector of the base, based upon geologic conditions and the availability of sufficient open space to support the drilling operation. It is projected that a production well drilled at the recommended location would produce geothermal fluid of 130 to 145/sup 0/F at a rate of approximately 1000 gpm with reasonable fluid drawdowns. The Environmental Assessment for the drilling portion of the project has been completed, and no irreversible or irretrievable impacts are anticipated as a result of this drilling program. The permitting process is proceeding smoothly.

Lawford, T.W.; Malone, C.R.; Allman, D.W.; Zeisloft, J.; Foley, D.

1983-06-01T23:59:59.000Z

407

Mono County geothermal activity  

SciTech Connect

Three geothermal projects have been proposed or are underway in Mono County, California. The Mammoth/Chance geothermal development project plans to construct a 10-MW geothermal binary power plant which will include 8 production and 3 injection wells. Pacific Lighting Energy Systems is also planning a 10-MW binary power plant consisting of 5 geothermal wells and up to 4 injection wells. A geothermal research project near Mammoth Lakes has spudded a well to provide a way to periodically measure temperature gradient, pressure, and chemistry of the thermal waters and to investigate the space-heating potential of the area in the vicinity of Mammoth Lakes. All three projects are briefly described.

Lyster, D.L.

1986-01-01T23:59:59.000Z

408

Petrology and stable isotope geochemistry of three wells in the Buttes area of the Salton Sea Geothermal Field, Imperial Valley, California, USA  

DOE Green Energy (OSTI)

A detailed investigation is reported of cuttings recovered from three wells in the Salton Sea geothermal field located at the southeast end of the Salton Sea, California. The wells, Magmamax No. 2, Magmamax No. 3, and Woolsey No. 1 penetrate 1340 m, 1200 m, and 730 m, respectively, of altered sandstones, siltstones, and shales of the Colorado River delta. The wells are located at the crest of a thermal anomaly, reach a maximum of 320/sup 0/C at 1070 m, and produce a brine containing approximately 250,000 mg/1 of dissolved solids.

Kendall, C.

1976-12-01T23:59:59.000Z

409

Connecticut Wells | Open Energy Information  

Open Energy Info (EERE)

Connecticut Wells Jump to: navigation, search Name Connecticut Wells Place Bethlehem, Connecticut Zip 6751 Sector Geothermal energy Product A Connecticut-based geothermal heat pump...

410

Technology for Increasing Geothermal Energy Productivity. Computer Models to Characterize the Chemical Interactions of Goethermal Fluids and Injectates with Reservoir Rocks, Wells, Surface Equiptment  

DOE Green Energy (OSTI)

This final report describes the results of a research program we carried out over a five-year (3/1999-9/2004) period with funding from a Department of Energy geothermal FDP grant (DE-FG07-99ID13745) and from other agencies. The goal of research projects in this program were to develop modeling technologies that can increase the understanding of geothermal reservoir chemistry and chemistry-related energy production processes. The ability of computer models to handle many chemical variables and complex interactions makes them an essential tool for building a fundamental understanding of a wide variety of complex geothermal resource and production chemistry. With careful choice of methodology and parameterization, research objectives were to show that chemical models can correctly simulate behavior for the ranges of fluid compositions, formation minerals, temperature and pressure associated with present and near future geothermal systems as well as for the very high PT chemistry of deep resources that is intractable with traditional experimental methods. Our research results successfully met these objectives. We demonstrated that advances in physical chemistry theory can be used to accurately describe the thermodynamics of solid-liquid-gas systems via their free energies for wide ranges of composition (X), temperature and pressure. Eight articles on this work were published in peer-reviewed journals and in conference proceedings. Four are in preparation. Our work has been presented at many workshops and conferences. We also considerably improved our interactive web site (geotherm.ucsd.edu), which was in preliminary form prior to the grant. This site, which includes several model codes treating different XPT conditions, is an effective means to transfer our technologies and is used by the geothermal community and other researchers worldwide. Our models have wide application to many energy related and other important problems (e.g., scaling prediction in petroleum production systems, stripping towers for mineral production processes, nuclear waste storage, CO2 sequestration strategies, global warming). Although funding decreases cut short completion of several research activities, we made significant progress on these abbreviated projects.

Nancy Moller Weare

2006-07-25T23:59:59.000Z

411

Preliminary test results and geology of the DOE/Superior Hulin. number sign. 1 geopressured-geothermal well, Vermillion Parish, Louisiana  

Science Conference Proceedings (OSTI)

The DOE/Superior Hulin {number sign}1 well is the most recent of the current three geopressured-geothermal prospects being tested by the Department of Energy (DOE) under its geopressured-geothermal program initiated in 1975. The other prospects under evaluation are Gladys McCall {number sign}1 (Cameron Parish, LA) and Pleasant Bayou {number sign}2 (Brazoria County, TX). The main objective of this research program is to evaluate the commercial viability of energy production from high temperature (275{degrees}+F.), geopressured, natural-gas-saturated brine sandstone aquifers occur-ring in the Gulf Coast area. The DOE/Superior Hulin {number sign}1 well is located 7.5 mi (12 km) south of the town of Erath, Louisiana. It was originally drilled and later sidetracked as an exploration well by Superior Oil Company to a depth of 21,549 ft (6,568 m) and completed in 1979. The well produced 0.3 bcf gas in 19 months from the interval between 21,059 and 21,094 ft (6,419-6,429 m). Later, owing to production problems caused by tubing/casing failure, Superior abandoned production and transferred the well to DOE for testing under the geopressured-geothermal program. The well has recently been cleaned and recompleted by Eaton Operating Company, Houston, Texas, and plugged back to 20,725 ft (6,317 m). This well penetrates the deepest known Gulf Coast geopressured-geothermal reservoir and has a maximum recorded temperature of 338{degrees}F with a 560 ft (171 m) thick sandstone. Regional geologic work indicates that the Hulin sandstone represents either a submarine canyon or an unstable shelf delta type of environment. The well is presently perforated at the bottom of the sandstone from 20,610 to 20,690 ft (6282-6306 m) for preliminary short-term testing now in progress. Initial testing indicates the gas-brine ratio to be 31 SCF/STB.

John, C.J.; Stevenson, D.A.; Groat, C.G. (Louisiana Geological Survey, Baton Rouge (USA))

1990-09-01T23:59:59.000Z

412

Gulf Coast geopressured-geothermal program summary report compilation. Volume 2-B: Resource description, program history, wells tested, university and company based research, site restoration  

DOE Green Energy (OSTI)

The US Department of Energy established a geopressured-geothermal energy program in the mid 1970`s as one response to America`s need to develop alternate energy resources in view of the increasing dependence on imported fossil fuel energy. This program continued for 17 years and approximately two hundred million dollars were expended for various types of research and well testing to thoroughly investigate this alternative energy source. This volume describes the following studies: Design well program; LaFourche Crossing; MG-T/DOE Amoco Fee No. 1 (Sweet Lake); Environmental monitoring at Sweet Lake; Air quality; Water quality; Microseismic monitoring; Subsidence; Dow/DOE L.R. Sweezy No. 1 well; Reservoir testing; Environmental monitoring at Parcperdue; Air monitoring; Water runoff; Groundwater; Microseismic events; Subsidence; Environmental consideration at site; Gladys McCall No. 1 well; Test results of Gladys McCall; Hydrocarbons in production gas and brine; Environmental monitoring at the Gladys McCall site; Pleasant Bayou No. 2 well; Pleasant Bayou hybrid power system; Environmental monitoring at Pleasant Bayou; and Plug abandonment and well site restoration of three geopressured-geothermal test sites. 197 figs., 64 tabs.

John, C.J.; Maciasz, G.; Harder, B.J.

1998-06-01T23:59:59.000Z

413

Geothermal power plants of Japan: a technical survey of existing and planned installations. Report No. CATMEC/9  

SciTech Connect

The technical features of the existing and planned geothermal power plants in Japan are surveyed. A description is given of the Geothermal Energy Research and Development Co., Ltd. (GERD) which has capabilities in all areas of geothermal power development, from exploratory geological activities through construction and operation of the plants. The survey includes reports on four types of plants: natural, dry steam; separated steam or ''single flash;'' separated steam/flash or ''double flash;'' and binary fluid. For each geothermal power plant, the following are included or discussed: exploration and geology of the site; wells and gathering system; turbine-generator; condenser, gas extractor and cooling tower; economic data; environmental effects; and plant operations. Many tables and figures are included, and a summary is given of the geothermal resource utilization efficiency for each operating plant. Promising areas of new development are listed with estimates of potential capacity.

DiPippo, R.

1978-03-01T23:59:59.000Z

414

Geothermal power plants of Japan: a technical survey of existing and planned installations. Report No. CATMEC/9  

DOE Green Energy (OSTI)

The technical features of the existing and planned geothermal power plants in Japan are surveyed. A description is given of the Geothermal Energy Research and Development Co., Ltd. (GERD) which has capabilities in all areas of geothermal power development, from exploratory geological activities through construction and operation of the plants. The survey includes reports on four types of plants: natural, dry steam; separated steam or ''single flash;'' separated steam/flash or ''double flash;'' and binary fluid. For each geothermal power plant, the following are included or discussed: exploration and geology of the site; wells and gathering system; turbine-generator; condenser, gas extractor and cooling tower; economic data; environmental effects; and plant operations. Many tables and figures are included, and a summary is given of the geothermal resource utilization efficiency for each operating plant. Promising areas of new development are listed with estimates of potential capacity.

DiPippo, R.

1978-03-01T23:59:59.000Z

415

Geothermal well site restoration and plug and abandonment of wells, DOE Gladys McCall test site, Cameron Parish, Louisiana and DOE Willis Hulin test site, Vermillion Parish, Louisiana  

DOE Green Energy (OSTI)

A report is presented on the final phase of an energy research program conducted by the U.S. Department of Energy (DOE) involving two geothermal well sites in the State of Louisiana--the Gladys McCall site and the Willis Hulin site. The research program was intended to improve geothermal technology and to determine the efficacy of producing electricity commercially from geopressured resource sites. The final phase of the program consisted of plug and abandonment (P&A) of the wells and restoration of the well sites. Restoration involved (a) initial soil and water sampling and analysis; (b) removal and disposal of well pads, concrete, utility poles, and trash; (c) plugging of monitor and freshwater wells; and (d) site leveling and general cleanup. Restoration of the McCall site required removal of naturally occurring radioactive material (NORM), which was costly and time-consuming. Exhibits are included that provide copies of work permits and authorizations, P&A reports, and cost and salvage reports. Site locations, grid maps, and photographs are provided.

Rinehart, Ben N.

1994-08-01T23:59:59.000Z

416

Geopressured-geothermal drilling and testing plan. General Crude Oil--Dept. of Energy Pleasant Bayou No. 1 well, Brazoria County, Texas  

DOE Green Energy (OSTI)

As a result of geopressured resource assessment studies in the Gulf Coast region, the Brazoria fairway, located in Brazoria County, Texas was determined to be an optimum area for additional studies. A plan is presented for drilling, completion, and testing of one geopressured-geothermal well and two disposal wells in Brazoria County, Texas. The objectives of the well drilling and testing program are to determine the following parameters: reservoir permeability, porosity, thickness, rock material properties, depth, temperature, and pressure; reservoir fluid content, specific gravity, resistivity, viscosity, and hydrocarbons in solution; reservoir fluid production rates, pressure, temperature, production decline, and pressure decline; geopressured well and surface equipment design requirements for high-volume production and possible sand production; specific equipment design for surface operations, hydrocarbons distribution, and effluent disposal; and possibilities of reservoir compaction and/or surface subsidence. (JGB)

Not Available

1978-05-01T23:59:59.000Z

417

Environmental baseline monitoring in the area of general crude oil - Department of Energy Pleasant Bayou Number 2: a geopressured geothermal test well, 1979. Annual report, Volume I  

DOE Green Energy (OSTI)

A program to monitor baseline air and water quality, subsidence, microseismic activity, and noise in the vicinity of Brazoria County geopressured geothermal test wells, Pleasant Bayou No. 1 and No. 2, has been underway since March 1978. The initial report on environmental baseline monitoring at the test well contained descriptions of baseline air and water quality, a noise survey, an inventory of microseismic activity, and a discussion of the installation of a liquid tilt meter (Gustavson, 1979). The following report continues the description of baseline air and water quality of the test well site, includes an inventory of microseismic activity during 1979 with interpretations of the origin of the events, and discusses the installation and monitoring of a liquid tilt meter at the test well site. In addition, a brief description of flooding at the test site is presented.

Gustavson, T.C.; Howard, R.C.; McGookey, D.

1980-01-01T23:59:59.000Z

418

Geothermal resource areas database for monitoring the progress of development in the United States  

DOE Green Energy (OSTI)

The Geothermal Resource Areas Database (GRAD) and associated data system provide broad coverage of information on the development of geothermal resources in the United States. The system is designed to serve the information requirements of the National Progress Monitoring System. GRAD covers development from the initial exploratory phase through plant construction and operation. Emphasis is on actual facts or events rather than projections and scenarios. The selection and organization of data are based on a model of geothermal development. Subjects in GRAD include: names and addresses, leases, area descriptions, geothermal wells, power plants, direct use facilities, and environmental and regulatory aspects of development. Data collected in the various subject areas are critically evaluated, and then entered into an on-line interactive computer system. The system is publically available for retrieval and use. The background of the project, conceptual development, software development, and data collection are described here. Appendices describe the structure of the database in detail.

Lawrence, J.D.; Lepman, S.R.; Leung, K.; Phillips, S.L.

1981-01-01T23:59:59.000Z

419

Geothermal energy abstract sets. Special report No. 14  

DOE Green Energy (OSTI)

This bibliography contains annotated citations in the following areas: (1) case histories; (2) drilling; (3) reservoir engineering; (4) injection; (5) geothermal well logging; (6) environmental considerations in geothermal development; (7) geothermal well production; (8) geothermal materials; (9) electric power production; (10) direct utilization of geothermal energy; (11) economics of geothermal energy; and (12) legal, regulatory and institutional aspects. (ACR)

Stone, C. (comp.)

1985-01-01T23:59:59.000Z

420

Geothermal Development Phases | Open Energy Information  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Phases of a Geothermal Development...

Note: This page contains sample records for the topic "geothermal exploratory wells" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Geothermal Development Phases | Open Energy Information  

Open Energy Info (EERE)

Page Edit History Facebook icon Twitter icon Geothermal Development Phases Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field...

422

Geothermal test-well drilling program for the Village of Jemez Springs, New Mexico. Final technical report, January 1, 1979-June 30, 1981  

DOE Green Energy (OSTI)

The geothermal resources located during test drilling at Jemez Springs, New Mexico are described and the feasibility of utilizing this low-temperature resource for a space heating demonstration project at the Town Hall and Fire Department Building is discussed. A test well was drilled to a depth of 824 feet that penetrated water-producing zones at 80 feet with a water temperature of approximately 150 to 155/sup 0/F and at 500 feet with waters of approximately 120 to 125/sup 0/F. After a number of repairs to the Jemez Springs Well Number 1, the project was ended having completed a well capable of producing a flow of approximately 20 gpm at 150 to 155/sup 0/F. A follow-up demonstration heating project is planned.

Armenta, E.; Icerman, L.; Starkey, A.H.

1981-09-01T23:59:59.000Z

423

Sourcebook on the production of electricity from geothermal energy. Chapter 2 (draft). Resource characteristics: reservoirs, wellheads and delivery systems. Part 3. Analysis of the flow in the reservoir: well system. [Includes glossary  

DOE Green Energy (OSTI)

This report is a preliminary version of material assembled for insertion in the Sourcebook on the Production of Electricity from Geothermal Energy currently being composed under ERDA (now DOE). An attempt has been made to develop the theory of the geothermal well in an ordered stepwise manner beginning from the three basic continuities and introducing each new idea systematically. A formal textbook approach is used.

Ryley, D.J.

1978-06-01T23:59:59.000Z

424

Geothermal Technologies Office: Geothermal Maps  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Renewable Energy EERE Home | Programs & Offices | Consumer Information Geothermal Technologies Office Search Search Help Geothermal Technologies Office HOME ABOUT...

425

Geology, hydrothermal petrology, stable isotope geochemistry, and fluid inclusion geothermometry of LASL geothermal test well C/T-1 (Mesa 31-1), East Mesa, Imperial Valley, California, USA  

DOE Green Energy (OSTI)

Borehole Mesa 31-1 (LASL C/T-1) is an 1899-m (6231-ft) deep well located in the northwestern part of the East Mesa Geothermal Field. Mesa 31-1 is the first Calibration/Test Well (C/T-1) in the Los Alamos Scientific Laboratory (LASL), Geothermal Log Interpretation Program. The purpose of this study is to provide a compilation of drillhole data, drill cuttings, well lithology, and formation petrology that will serve to support the use of well LASL C/T-1 as a calibration/test well for geothermal logging. In addition, reviews of fluid chemistry, stable isotope studies, isotopic and fluid inclusion geothermometry, and the temperature log data are presented. This study provides the basic data on the geology and hydrothermal alteration of the rocks in LASL C/T-1 as background for the interpretation of wireline logs.

Miller, K.R.; Elders, W.A.

1980-08-01T23:59:59.000Z

426

Attitudinal survey of citizens in a potential Gulf Coast geopressured-geothermal test-well locality. Final report  

DOE Green Energy (OSTI)

The results of a mail survey used to tap the opinions of the public at large in the study area are described. Attention in that section is focused on awareness of the resource, favorability toward the impending development, concerns about the development, attitudes regarding how the development should take place, levels of community satisfaction, and perceived future problems due to community growth. An analysis is given of the 33 interviews conducted with local representatives of the financial and commercial sectors, government, industry, agriculture, and environmental groups. The main foci here are perceived problems and benefits associated with geothermal development and the local capacity for coping with strains on community services resulting from any population growth which may be generated by resource development. A comparison and synthesis of the results from the general survey and the sector interviews is included. In conclusion, policy recommendations are made for means through which to consolidate goals and to achieve resource development objectives with minimal antagonism of and problems for local citizens and community sectors.

Lopreato, S.C.; Blissett, M.

1977-05-01T23:59:59.000Z

427

Geopressurized/geothermal project, Pleasant Bayou well no. 2, Brazoria County, Texas: Workover summary, February 15, 1986-April 3, 1986  

DOE Green Energy (OSTI)

A workover of the Pleasant Bayou well No. 2 to clear debris from the well and replace leaking 5.5'' production tubing is described. (ACR)

Not Available

1986-01-01T23:59:59.000Z

428

Exploration ofr geothermal resources in Dixie Valley, Nevada  

Science Conference Proceedings (OSTI)

A case history of SUNEDCO's exploratory efforts, which ultimately led to the drilling and discovery of the Dixie Valley goethermal field, is presented. The geochemistry from three active lot springs in the area: Dixie Hot Springs, South Hot Springs, and Hyder Hot Springs, was examined. Two heat flow drilling programs were conducted at Dixie Hot Springs consisting of 45 temperature gradient holes ranging in depth from 30 to 1500 ft. From this program a heat-flow anomaly was mapped extending along the Stillwater Range front in which temperature gradients are greater than 100/sup 0/c/Km. in 1978, the number 1 SW Lamb well was drilled on a 152 acre farmout from Chevron. The well was completed as a geothermal producer in a zone of fractured volcanic rocks. Since then, five additional geothermal producing wells were completed within the anomalous area. (MJF)

Parchman, W.L.; Knox, J.W.

1981-06-01T23:59:59.000Z

429

Geothermal/Exploration | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Exploration Geothermal/Exploration < Geothermal Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Exploration General Techniques Tree Techniques Table Regulatory Roadmap NEPA (120) Geothermal springs along Yellowstone National Park's Firehole River in the cool air of autumn. The world's most environmentally sensitive geothermal features are protected by law. Geothermal Exploration searches the earth's subsurface for geothermal resources that can be extracted for the purpose of electricity generation. A geothermal resource is as co