Sample records for geothermal drill holes

  1. Core Hole Drilling And Testing At The Lake City, California Geothermal...

    Open Energy Info (EERE)

    Drilling And Testing At The Lake City, California Geothermal Field Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Core Hole Drilling And...

  2. Old Maid Flat geothermal exploratory hole No. 7A drilling and completion report

    SciTech Connect (OSTI)

    Not Available

    1981-02-01T23:59:59.000Z

    Drilling and testing efforts for a 6000-foot geothermal exploratory hole on the western approaches to Mount Hood, near Portland, Oregon were completed. The intent of the drilling was to encounter a hydrothermal reservoir in a postulated fracture system and confirm the existence of a moderate-temperature (200/sup 0/F) geothermal resource in the Old Main Flat (OMF) vicinity of Mount Hood. The exploratory hole, OMF No. 7A, was completed to a total depth of 6027 feet in 54 days using conventional rotary drilling techniques. The hole was found to be incapable of producing fluids with the desired temperatures. A maximum hole temperature of about 235/sup 0/F was recorded at total depth and a temperature gradient of about 3.3/sup 0/F/100 feet was exhibited over the lower 1000 feet of hole. A variety of technical data, including physical samples such as cores, cuttings, and borehole fluids, plus geophysical well logs were acquired. Data analyses are continuing, with results to be made available through future separate reports.

  3. Planning and drilling geothermal energy extraction hole EE-2: a precisely oriented and deviated hole in hot granitic rock

    SciTech Connect (OSTI)

    Helmick, C.; Koczan, S.; Pettitt, R.

    1982-04-01T23:59:59.000Z

    During the preceding work (Phase I) of the Hot Dry Rock (HDR) Geothermal Energy Project at Fenton Hill, two holes were drilled to a depth of nearly 3048 m (10,000 ft) and connected by a vertical hydraulic fracture. In this phase, water was pumped through the underground reservoir for approximately 417 days, producing an energy equivalent of 3 to 5 MW(t). Energy Extraction Hole No. 2 (EE-2) is the first of two deep holes that will be used in the Engineering-Resource Development System (Phase II) of the ongoing HDR Project of the Los Alamos National Laboratory. This phase of the work consists of drilling two parallel boreholes, inclined in their lower, open-hole sections at 35/sup 0/ to the vertical and separated by a vertical distance of 366 m (1200 ft) between the inclined parts of the drill holes. The holes will be connected by a series of vertical, hydraulically produced fractures in the Precambrian granitic rock complex. EE-2 was drilled to a depth of 4660 m (15,289 ft), where the bottom-hole temperature is approximately 320/sup 0/C (608/sup 0/F). Directional drilling techniques were used to control the azimuth and deviation of the hole. Upgrading of the temperature capability of existing hardware, and development of new equipment was necessary to complete the drilling of the hole in the extremely hot, hard, and abrasive granitic formation. The drilling history and the problems with bits, directional tools, tubular goods, cementing, and logging are described. A discussion of the problems and recommendations for overcoming them are also presented.

  4. Phase 2 and 3 Slim Hole Drilling and Testing at the Lake City, California Geothermal Field

    SciTech Connect (OSTI)

    Dick Benoit; David Blackwell; Joe Moore; Colin Goranson

    2005-10-27T23:59:59.000Z

    During Phases 2 and 3 of the Lake City GRED II project two slim holes were cored to depths of 1728 and 4727 ft. Injection and production tests with temperature and pressure logging were performed on the OH-1 and LCSH-5 core holes. OH-1 was permanently modified by cementing an NQ tubing string in place below a depth of 947 ft. The LCSH-1a hole was drilled in Quaternary blue clay to a depth of 1727 ft and reached a temperature of 193 oF at a depth of 1649 ft. This hole failed to find evidence of a shallow geothermal system east of the Mud Volcano but the conductive temperature profile indicates temperatures near 325 oF could be present below depth of 4000 ft. The LCSH-5 hole was drilled to a depth of 4727 ft and encountered a significant shallow permeability between depths of 1443 and 1923 ft and below 3955 ft. LCSH-5 drilled impermeable Quaternary fanglomerate to a depth of 1270 ft. Below 1270 ft the rocks consist primarily of Tertiary sedimentary rocks. The most significant formation deep in LCSH-5 appears to be a series of poikoilitic mafic lava flows below a depth of 4244 ft that host the major deep permeable fracture encountered. The maximum static temperature deep in LCSH-5 is 323 oF and the maximum flowing temperature is 329 oF. This hole extended the known length of the geothermal system by ľ of a mile toward the north and is located over ˝ mile north of the northernmost hot spring. The OH-1 hole was briefly flow tested prior to cementing the NQ rods in place. This flow test confirmed the zone at 947 ft is the dominant permeability in the hole. The waters produced during testing of OH-1 and LCSH-5 are generally intermediate in character between the deep geothermal water produced by the Phipps #2 well and the thermal springs. Geothermometers applied to deeper fluids tend to predict higher subsurface temperatures with the maximum being 382 oF from the Phipps #2 well. The Lake City geothermal system can be viewed as having shallow (elevation > 4000 ft and temperatures of 270 to 310 oF), intermediate (elevation 2800 to 3700 ft and temperatures 270 to 320 oF ) and deep (elevations < 1000 ft and temperatures 323 to 337 oF) components. In the south part of the field, near Phipps #2 the shallow and deep components are present. In the central part of the field, near OH-1 the shallow and intermediate components are present and presumably the deep component is also present. In the north part of the field, the intermediate and deep components are present. Most or all of the fractures in the core have dips between 45 degrees and vertical and no strong stratigraphic control on the resource has yet been demonstrated. Conceptually, the Lake City geothermal resource seems to be located along the north-south trending range front in a relatively wide zone of fractured rock. The individual fractures do not seem to be associated with any readily identifiable fault. In fact, no major hydraulically conductive faults were identified by the core drilling.

  5. Sandia National Laboratories: Geothermal Energy & Drilling Technology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    EnergyGeothermalGeothermal Energy & Drilling Technology Geothermal Energy & Drilling Technology Geothermal energy is an abundant energy resource that comes from tapping the natural...

  6. Temperatures, heat flow, and water chemistry from drill holes in the Raft River geothermal system, Cassia County, Idaho

    SciTech Connect (OSTI)

    Nathenson, M.; Urban, T.C.; Diment, W.H.; Nehring, N.L.

    1980-01-01T23:59:59.000Z

    The Raft River area of Idaho contains a geothermal system of intermediate temperatures (approx. = 150/sup 0/C) at depths of about 1.5 km. Outside of the geothermal area, temperature measurements in three intermediate-depth drill holes (200 to 400 m) and one deep well (1500 m) indicate that the regional conductive heat flow is about 2.5 ..mu..cal/cm/sup 2/ sec or slightly higher and that temperature gradients range from 50/sup 0/ to 60/sup 0/C/km in the sediments, tuffs, and volcanic debris that fill the valley. Within and close to the geothermal system, temperature gradients in intermediate-depth drill holes (100 to 350 m) range from 120/sup 0/ to more than 600/sup 0/C/km, the latter value found close to an artesian hot well that was once a hot spring. Temperatures measured in three deep wells (1 to 2 km) within the geothermal area indicate that two wells are in or near an active upflow zone, whereas one well shows a temperature reversal. Assuming that the upflow is fault controlled, the flow is estimated to be 6 liter/sec per kilometer of fault length. From shut-in pressure data and the estimated flow, the permeability times thickness of the fault is calculated to be 2.4 darcy m. Chemical analyses of water samples from old flowing wells, recently completed intermediate-depth drill holes, and deep wells show a confused pattern. Geothermometer temperatures of shallow samples suggest significant re-equilibration at temperatures below those found in the deep wells. Silica geothermometer temperatures of water samples from the deep wells are in reasonable agreement with measured temperatures, whereas Na-K-Ca temperatures are significantly higher than measured temperatures. The chemical characteristics of the water, as indicated by chloride concentration, are extremely variable in shallow and deep samples. Chloride concentrations of the deep samples range from 580 to 2200 mg/kg.

  7. Geothermal: Sponsored by OSTI -- A study of geothermal drilling...

    Office of Scientific and Technical Information (OSTI)

    A study of geothermal drilling and the production of electricity from geothermal energy Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search...

  8. Geothermal drilling in Cerro Prieto

    SciTech Connect (OSTI)

    Dominguez, B.; Sanchez, G.

    1981-01-01T23:59:59.000Z

    To date, 71 goethermal wells have been drilled in Cerro Prieto. The activity has been divided into several stages, and, in each stage, attempts have been made to correct deficiencies that were gradually detected. Some of these problems have been solved; others, such as those pertaining to well casing, cement, and cementing jobs, have persisted. The procedures for well completion - the most important aspect for the success of a well - that were based on conventional oil well criteria have been improved to meet the conditions of the geothermal reservoir. Several technical aspects that have improved should be further optimized, even though the resolutions are considered to be reasonably satisfactory. Particular attention has been given to the development of a high-temperature drilling fluid capable of being used in drilling through lost circulation zones. Conventional oil well drilling techniques have been used except where hole-sloughing is a problem. Sulfonate lignitic mud systems have been used with good results. When temperatures exceed 300/sup 0/C (572/sup 0/F), it has been necessary to use an organic polymer to stabilize the mud properties.

  9. Well descriptions for geothermal drilling

    SciTech Connect (OSTI)

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

    1981-01-01T23:59:59.000Z

    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.

  10. Geothermal: Sponsored by OSTI -- Deep Geothermal Drilling Using...

    Office of Scientific and Technical Information (OSTI)

    Deep Geothermal Drilling Using Millimeter Wave Technology Final Technical Research Report Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic...

  11. Geothermal drilling research in the United States

    SciTech Connect (OSTI)

    Varnado, S.G.; Maish, A.B.

    1980-01-01T23:59:59.000Z

    The high cost of drilling and completing geothermal wells is an impediment to the development of this resource. The Department of Energy (DOE), Division of Geothermal Energy (DGE), is conducting an R and D program directed at reducing well costs through improvements in geothermal drilling and completion technology. This program includes R and D activities in high temperature drilling hardware, drilling fluids, lost circulation control methods, completion technology, and advanced drilling systems. An overview of the program is presented.

  12. Recent Developments in Geothermal Drilling Fluids

    SciTech Connect (OSTI)

    Kelsey, J. R.; Rand, P. B.; Nevins, M. J.; Clements, W. R.; Hilscher, L. W.; Remont, L. J.; Matula, G. W.; Balley, D. N.

    1981-01-01T23:59:59.000Z

    In the past, standard drilling muds have been used to drill most geothermal wells. However, the harsh thermal and chemical environment and the unique geothermal formations have led to such problems as excessive thickening of the fluid, formation damage, and lost circulation. This paper describes three recent development efforts aimed at solving some of these drilling fluid problems. Each of the efforts is at a different stage of development. The Sandia aqueous foam studies are still in the laboratory phase, NL Baroid's polymeric deflocculant is soon to be field tested, and the Mudtech high-temperature mud was field tested several months ago. Low density and the capability to suspend particles at low relative velocities are two factors which make foam an attractive drilling fluid. The stability of these foams and their material properties at high temperatures are presently unknown and this lack of information has precluded their use as a geothermal drilling fluid. The aqueous foam studies being conducted at Sandia are aimed at screening available surfactants for temperature and chemical stability. Approximately 100 surfactants have been tested at temperatures of 260 and 310 C (500 and 590 F), and several of these candidates appear very promising. NL Baroid has developed a polymeric deflocculant for water-based muds which shows promise in retarding thermal degradation effects and associated gelation. Formulations containing this new polymer have shown good rheological properties up to 260 C (500 F) in laboratory testing. A high-temperature mud consisting primarily of sepiolite, bentonite, and brown coal has been developed by Mudtech, Inc. A field test of this mud was conducted in a geothermal well in the Imperial Valley of California in May 1980. The fluid exhibited good hole-cleaning characteristics and good rheological properties throughout the test.

  13. Temperatures, heat flow, and water chemistry from drill holes...

    Open Energy Info (EERE)

    Temperatures, heat flow, and water chemistry from drill holes in the Raft River geothermal system, Cassia County, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to...

  14. Geothermal drill pipe corrosion test plan

    SciTech Connect (OSTI)

    Caskey, B.C.; Copass, K.S.

    1980-12-01T23:59:59.000Z

    Plans are presented for conducting a field test of drill pipe corrosion, comparing air and nitrogen as drilling fluids. This test will provide data for evaluating the potential of reducing geothermal well drilling costs by extending drill pipe life and reducing corrosion control costs. The 10-day test will take place during fall 1980 at the Baca Location in Sandoval County, New Mexico.

  15. Odessa fabricator builds rig specifically for geothermal drilling...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Odessa fabricator builds rig specifically for geothermal drilling Odessa fabricator builds rig specifically for geothermal drilling August 3, 2008 - 2:59pm Addthis For 35 years, MD...

  16. Evaluation of Emerging Technology for Geothermal Drilling and...

    Broader source: Energy.gov (indexed) [DOE]

    Evaluation of Emerging Technology for Geothermal Drilling and Logging Applications Evaluation of Emerging Technology for Geothermal Drilling and Logging Applications Evaluation of...

  17. Geothermal drilling research in the United States

    SciTech Connect (OSTI)

    Varnado, S.G.

    1980-01-01T23:59:59.000Z

    Current research and development in the following areas are presented: geothermal roller cone bits, polycrystalline diamond compact bits, a continuous chain drill, drilling fluids test equipment, mud research, inert fluids, foam fluids, lost circulation control, completion technology, and advanced drilling and completion systems. (MHR)

  18. Cascade geothermal drilling/corehole N-1

    SciTech Connect (OSTI)

    Swanberg, C.A.; Combs, J. (Geothermal Resources International, Inc., San Mateo, CA (USA)); Walkey, W.C. (GEO Operator Corp., Bend, OR (USA))

    1988-07-19T23:59:59.000Z

    Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table. 28 refs., 15 figs., 2 tabs.

  19. Cascade geothermal drilling/corehole N-3

    SciTech Connect (OSTI)

    Swanberg, C.A.

    1988-07-19T23:59:59.000Z

    Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core holes GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commercial exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table.

  20. Evaluation of Emerging Technology for Geothermal Drilling and...

    Broader source: Energy.gov (indexed) [DOE]

    Evaluation of Emerging Technology for Geothermal Drilling and Logging Applications Georgia Bettin Doug Blankenship Presenter: Doug Blankenship Sandia National Laboratories...

  1. Geothermal drilling problems and their impact on cost

    SciTech Connect (OSTI)

    Carson, C.C.

    1982-01-01T23:59:59.000Z

    Historical data are presented that demonstrate the significance of unexpected problems. In extreme cases, trouble costs are the largest component of well costs or severe troubles can lead to abandonment of a hole. Drilling experiences from US geothermal areas are used to analyze the frequency and severity of various problems. In addition, average trouble costs are estimated based on this analysis and the relationship between trouble and depth is discussed. The most frequent drilling and completion problem in geothermal wells is lost circulation. This is especially true for resources in underpressured, fractured formations. Serious loss of circulation can occur during drilling - because of this, the producing portions of many wells are drilled with air or aerated drilling fluid and the resulting corrosion/erosion problems are tolerated - but it can also affect the cementing of well casing. Problems in bonding the casing to the formation result from many other causes as well, and are common in geothermal wells. Good bonds are essential because of the possibility of casing collapse due to thermal cycling during the life of the well. Several other problems are identified and their impacts are quantified and discussed.

  2. Recent developments in geothermal drilling fluids

    SciTech Connect (OSTI)

    Kelsey, J.R.; Rand, P.B.; Nevins, M.J.; Clements, W.R.; Hilscher, L.W.; Remont, L.J.; Matula, G.W.; Bailey, D.N.

    1981-01-01T23:59:59.000Z

    Three recent development efforts are described, aimed at solving some of these drilling fluid problems. The Sandia aqueous foam studies are still in the laboratory phase; NL Baroid's polymeric deflocculant is being field tested; and the Mudtech high temperature mud was field tested several months ago. The aqueous foam studies are aimed at screening available surfactants for temperture and chemical stability. Approximately 100 surfactants have been tested at temperatures of 260/sup 0/C and 310/sup 0/C and several of these candidates appear very promising. A polymeric deflocculant was developed for water-based muds which shows promise in laboratory tests of retarding thermal degradation effects and associated gelation. Formulations containing this new polymer have shown good rheological properties up to 500/sup 0/F. A high temperature mud consisting primarily of sepiolite, bentonite, and brown coal has been developed. A field test of this mud was conducted in a geothermal well in the Imperial Valley of California in May of last year. The fluid exhibited good hole-cleaning characteristics and good rheological properties throughout the test. (MHR)

  3. Use of Downhole Motors in Geothermal Drilling in the Philippines

    SciTech Connect (OSTI)

    Pyle, D. E.

    1981-01-01T23:59:59.000Z

    This paper describes the use of downhole motors in the Tiwi geothermal field in the Philippines, The discussion includes the application Of a Dyna-Drill with insert-type bits for drilling through surface alluvium. The economics of this type of drilling are compared to those of conventional rotary drilling. The paper also describes the use of a turbodrill that drills out scale as the well produces geothermal fluids.

  4. Geothermal wells: a forecast of drilling activity

    SciTech Connect (OSTI)

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

    1981-07-01T23:59:59.000Z

    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.

  5. Physical-Property Measurements on Core Samples from Drill-Holes...

    Open Energy Info (EERE)

    Physical-Property Measurements on Core Samples from Drill-Holes DB-1 and DB-2, Blue Mountain Geothermal Prospect, North-Central Nevada Jump to: navigation, search OpenEI Reference...

  6. Drill wear: its effect on the diameter of drilled holes

    E-Print Network [OSTI]

    Reichert, William Frederick

    1955-01-01T23:59:59.000Z

    genoa arrrZgg zo gaamWra gHZ. zo ZaaXm axz:gVm VZXgg DRILL WEhR: ITS EFFECT ON THE DlhEETER GF DRILLED HOLES h Thesis Villian Frederick Reiehert, Jr. hpproved as to style and oontent by: a rman o onn ee ea o par nen hugus t 1955 h.... I RTRONCTIOE ~ ~ ~ ~ ~ ~ e s ~ o e o o o ~ N I I DRILLS AND DRXLLXNG ~ ~ ~ ~ ~ o e ~ o ~ ~ Twist Drills Drill Presses Cutting Fluids . . . ~ Drill Pigs IIX DESCRIPTXOM OF EQUIPRERT AND PROCEXlIRE 6 13 19 23 27 Drilliag Eguipeeat...

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

    Open Energy Info (EERE)

    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...

  8. Title 11 Alaska Administrative Code 87 Geothermal Drilling and...

    Open Energy Info (EERE)

    Geothermal Drilling and Conservation Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: Title 11 Alaska Administrative Code 87...

  9. Geothermal: Sponsored by OSTI -- Vale exploratory slimhole: Drilling...

    Office of Scientific and Technical Information (OSTI)

    Vale exploratory slimhole: Drilling and testing Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New...

  10. 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 HomeBasic Search About Publications Advanced Search New Hot...

  11. Use of an inert drilling fluid to control geothermal drill pipe corrosion

    SciTech Connect (OSTI)

    Caskey, B.C.

    1981-04-01T23:59:59.000Z

    The results of a geothermal drill pipe corrosion field test are presented. When a low-density drilling fluid was required for drilling a geothermal well because of an underpressured, fractured formation, two drilling fluids were alternatively used to compare drill pipe corrosion rates. The first fluid was an air-water mist with corrosion control chemicals. The other fluid was a nitrogen-water mist without added chemicals. The test was conducted during November 1980 at the Baca Location in northern New Mexico, USA. Data from corrosion rings, corrosion probes, fluid samples, and flow line instrumentation are plotted for the ten day test period. It is shown that the inert drilling fluid (nitrogen) reduced corrosion rates by more than an order of magnitude. Test setup and procedures are also discussed. Development of an on-site inert gas generator could reduce the cost of drilling geothermal wells by extending drill pipe life and reducing corrosion control chemical costs.

  12. Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Zemach, Ezra

    Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

  13. Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

    SciTech Connect (OSTI)

    Zemach, Ezra

    2010-01-01T23:59:59.000Z

    Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

  14. Precision directional drilling of hot-dry-rock geothermal production well EE-3

    SciTech Connect (OSTI)

    Carden, R.S.; Rowley, J.C.; Helmick, C.

    1982-01-01T23:59:59.000Z

    The deviated directional drilling of the hot dry rock (HDR) geothermal production well EE-3 (Energy Extraction No. 3) was successfully completed on August 1981. The injection well, EE-2, previously had been drilled with its lower part at an inclination of 35/sup 0/ to the vertical. It reached an on-line depth of 15,292 feet and its bottom-hole temperature was 608/sup 0/F (320/sup 0/C). The production well EE-3 was required to be drilled 1200 feet (370 m) above and parallel to the injection well. This necessitated high precision, controlled-trajectory directional drilling operations. The directional drilling of EE-3 was accomplished within the required tolerances at a depth of 13,933 feet and a bottom-hole temperature of 580/sup 0/F (280/sup 0/C).

  15. Impact of common problems in geothermal drilling and completion

    SciTech Connect (OSTI)

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

    1982-01-01T23:59:59.000Z

    Problems that arise in geothermal drilling and completion account for a significant portion of geothermal well costs. In order to evaluate new technologies for combatting these problems, the relative frequencies and severities of different problems have been estimated. The estimates were based on both subjective judgements and analysis of available drilling records. The most common problems include lost circulation, stuck pipe and cementing, and their impact is to increase well cost by an average of at least 15%.

  16. Recent drilling activities at the earth power resources Tuscarora geothermal power project's hot sulphur springs lease area.

    SciTech Connect (OSTI)

    Goranson, Colin

    2005-03-01T23:59:59.000Z

    Earth Power Resources, Inc. recently completed a combined rotary/core hole to a depth of 3,813 feet at it's Hot Sulphur Springs Tuscarora Geothermal Power Project Lease Area located 70-miles north of Elko, Nevada. Previous geothermal exploration data were combined with geologic mapping and newly acquired seismic-reflection data to identify a northerly tending horst-graben structure approximately 2,000 feet wide by at least 6,000 feet long with up to 1,700 feet of vertical offset. The well (HSS-2) was successfully drilled through a shallow thick sequence of altered Tertiary Volcanic where previous exploration wells had severe hole-caving problems. The ''tight-hole'' drilling problems were reduced using drilling fluids consisting of Polymer-based mud mixed with 2% Potassium Chloride (KCl) to reduce Smectite-type clay swelling problems. Core from the 330 F fractured geothermal reservoir system at depths of 2,950 feet indicated 30% Smectite type clays existed in a fault-gouge zone where total loss of circulation occurred during coring. Smectite-type clays are not typically expected at temperatures above 300 F. The fracture zone at 2,950 feet exhibited a skin-damage during injection testing suggesting that the drilling fluids may have caused clay swelling and subsequent geothermal reservoir formation damage. The recent well drilling experiences indicate that drilling problems in the shallow clays at Hot Sulphur Springs can be reduced. In addition, average penetration rates through the caprock system can be on the order of 25 to 35 feet per hour. This information has greatly reduced the original estimated well costs that were based on previous exploration drilling efforts. Successful production formation drilling will depend on finding drilling fluids that will not cause formation damage in the Smectite-rich fractured geothermal reservoir system. Information obtained at Hot Sulphur Springs may apply to other geothermal systems developed in volcanic settings.

  17. Recommendations of the workshop on advanced geothermal drilling systems

    SciTech Connect (OSTI)

    Glowka, D.A.

    1997-12-01T23:59:59.000Z

    At the request of the U.S. Department of Energy, Office of Geothermal Technologies, Sandia National Laboratories convened a group of drilling experts in Berkeley, CA, on April 15-16, 1997, to discuss advanced geothermal drilling systems. The objective of the workshop was to develop one or more conceptual designs for an advanced geothermal drilling system that meets all of the criteria necessary to drill a model geothermal well. The drilling process was divided into ten essential functions. Each function was examined, and discussions were held on the conventional methods used to accomplish each function and the problems commonly encountered. Alternative methods of performing each function were then listed and evaluated by the group. Alternative methods considered feasible or at least worth further investigation were identified, while methods considered impractical or not potentially cost-saving were eliminated from further discussion. This report summarizes the recommendations of the workshop participants. For each of the ten functions, the conventional methods, common problems, and recommended alternative technologies and methods are listed. Each recommended alternative is discussed, and a description is given of the process by which this information will be used by the U.S. DOE to develop an advanced geothermal drilling research program.

  18. Geothermal Drilling and Completion Technology Development Program Annual Progress Report

    SciTech Connect (OSTI)

    Varnado, S. G.

    1981-03-01T23:59:59.000Z

    The high cost of drilling and completing geothermal wells is an impediment to the timely development of geothermal resources in the US. The Division of Geothermal Energy (DGE) of the Department of Energy (DOE) has initiated a development program aimed at reducing well costs through improvements in the technology used to drill and complete geothermal wells. Sandia National Laboratories (SNL) has been selected to manage this program for DOE/DGE. Based on analyses of existing well costs, cost reduction goals have been set for the program. These are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987. To meet these goals, technology development in a wide range of areas is required. The near-term goal will be approached by improvements in conventional, rotary drilling technology. The long-term goal will require the development of an advanced drilling and completion system. Currently, the program is emphasizing activities directed at the near-term cost reduction goal, but increased emphasis on advanced system development is anticipated as time progresses. The program is structured into six sub-elements: Drilling Hardware, Drilling Fluids, Completion Technology, Lost Circulation Control Methods, Advanced Drilling Systems, and Supporting Technology. Technology development in each of these areas is conducted primarily through contracts with private industries and universities. Some projects are conducted internally by Sandia. This report describes the program, status, and results of ongoing R and D within the program for the 1980 fiscal year.

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

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Deep drilling data, Raft River geothermal area, Idaho-Raft River geothermal exploration well...

  20. Thermal Gradient Holes At Neal Hot Springs Geothermal Area (U...

    Open Energy Info (EERE)

    U.S. Geothermal Inc. (2010) Idaho Public Utilities Commission Approves Neal Hot Springs Power Purchase Agreement U.S. Geothermal Inc. (2009) U.S. Geothermal Starts New Drilling...

  1. Geothermal drilling and completion technology development program plan

    SciTech Connect (OSTI)

    Varnado, S.G.; Kelsey, J.R.; Wesenberg, D.L.

    1981-02-01T23:59:59.000Z

    A long-range plan for the development of new technology that will reduce the cost of drilling and completing geothermal wells is presented. The role of this program in relation to the total Federal Geothermal Energy Program is defined and specific program goals are identified. Then, the current status of the program, initiated in FY 1978, is presented, and research and development activities planned through 1987 are described. Budget and milestone estimates for each task are provided. The management plan for implementing the program is also discussed. The goals of this program are to develop the technology required to reduce the cost of drilling and completing geothermal wells by 25% in the near term and by 50% in the long term. Efforts under this program to date have resulted in new roller bit designs that will reduce well costs by 2% to 4%, new drag bits that have demonstrated marked increases in penetration rate, and the field verification of the effectiveness of inert drilling fluids in reducing drill pipe corrosion. Activities planned for the next six years for achieving the program goals are described. Technical activities include work in the areas of drilling hardware, drilling fluids, lost circulation control methods, completion technology, advanced drilling systems, and supporting technology.

  2. Method and apparatus of assessing down-hole drilling conditions

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Pixton, David S. (Lehl, UT); Johnson, Monte L. (Orem, UT); Bartholomew, David B. (Springville, UT); Fox, Joe (Spanish Fork, UT)

    2007-04-24T23:59:59.000Z

    A method and apparatus for use in assessing down-hole drilling conditions are disclosed. The apparatus includes a drill string, a plurality of sensors, a computing device, and a down-hole network. The sensors are distributed along the length of the drill string and are capable of sensing localized down-hole conditions while drilling. The computing device is coupled to at least one sensor of the plurality of sensors. The data is transmitted from the sensors to the computing device over the down-hole network. The computing device analyzes data output by the sensors and representative of the sensed localized conditions to assess the down-hole drilling conditions. The method includes sensing localized drilling conditions at a plurality of points distributed along the length of a drill string during drilling operations; transmitting data representative of the sensed localized conditions to a predetermined location; and analyzing the transmitted data to assess the down-hole drilling conditions.

  3. Deep-hole drilling Fruit Flies & Zebrafish

    E-Print Network [OSTI]

    Li, Yi

    surface to purify air, employing existing technology in a new way. It is the brainchild of artistFEATURE Deep-hole drilling Fruit Flies & Zebrafish Björk FEATURE Academics & Industry: ResearchIScOvER mAGAZInE discover@sheffield.ac.uk Research and Innovation Services University of Sheffield New

  4. Geothermal Drilling and Completion Technology Development Program. Quarterly progress report, October 1980-December 1980

    SciTech Connect (OSTI)

    Kelsey, J.R. (ed.)

    1981-03-01T23:59:59.000Z

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development.

  5. Geothermal Drilling and Completion Technology Development Program. Quarterly progress report, January 1981-March 1981

    SciTech Connect (OSTI)

    Kelsey, J.R. (ed.)

    1981-06-01T23:59:59.000Z

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods as they apply to advanced drilling systems.

  6. Drilling, completing, and maintaining geothermal wells in Baca, New Mexico

    SciTech Connect (OSTI)

    Pye, S.

    1981-01-01T23:59:59.000Z

    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. Lost circulation control in mud drilling and its effort 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 turbodrill and attempts at chemical inhibition.

  7. MEMS Materials and Temperature Sensors for Down Hole Geothermal System Monitoring

    E-Print Network [OSTI]

    Wodin-Schwartz, Sarah

    2013-01-01T23:59:59.000Z

    Geothermal EnergyThe future of geothermal energy: Impact of enhanceddown-hole monitoring of geothermal energy systems. ASME 2011

  8. Thermal Gradient Holes At Waunita Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Zacharakis, 1981) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes At Waunita Hot Springs Geothermal Area (Zacharakis,...

  9. Thermal Gradient Holes At Blue Mountain Geothermal Area (Fairbank...

    Open Energy Info (EERE)

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes At Blue Mountain Geothermal Area (Fairbank & Ross, 1999) Exploration Activity Details Location...

  10. Thermal Gradient Holes At Blue Mountain Geothermal Area (Fairbank...

    Open Energy Info (EERE)

    Blue Mountain Geothermal Area (Fairbank & Niggemann, 2004) Exploration Activity Details Location Blue Mountain Geothermal Area Exploration Technique Thermal Gradient Holes Activity...

  11. Slim Holes At Blue Mountain Geothermal Area (Fairbank Engineering...

    Open Energy Info (EERE)

    Home Exploration Activity: Slim Holes At Blue Mountain Geothermal Area (Fairbank Engineering Ltd, 2003) Exploration Activity Details Location Blue Mountain Geothermal Area...

  12. Thermal Gradient Holes At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Geothermal Area (Farrar, Et Al., 2003) Exploration Activity Details Location Long Valley Caldera Geothermal Area Exploration Technique Thermal Gradient Holes Activity Date 1998 -...

  13. Thermal Gradient Holes At Lightning Dock Geothermal Area (Cunniff...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Lightning Dock Geothermal Area (Cunniff & Bowers, 2005) Exploration Activity Details Location Lightning Dock Geothermal Area Exploration Technique Thermal...

  14. Thermal Gradient Holes At North Brawley Geothermal Area (Matlick...

    Open Energy Info (EERE)

    Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes At North Brawley Geothermal Area (Matlick & Jayne, 2008) Exploration...

  15. Core Holes At Valles Caldera - Sulphur Springs Geothermal Area...

    Open Energy Info (EERE)

    of core holes were drilled from 1984 to 1988 as a part of the Continental Scientific Drilling Program (CSDP) to better understand the stratigraphy, structure, hydrothermal...

  16. Core Holes At Valles Caldera - Redondo Geothermal Area (Goff...

    Open Energy Info (EERE)

    of core holes were drilled from 1984 to 1988 as a part of the Continental Scientific Drilling Program (CSDP) to better understand the stratigraphy, structure, hydrothermal...

  17. Exploration geothermal gradient drilling, Platanares, Honduras, Central America

    SciTech Connect (OSTI)

    Goff, S.J.; Laughlin, A.W.; Ruefenacht, H.D.; Goff, F.E.; Heiken, G.; Ramos, N.

    1988-01-01T23:59:59.000Z

    This paper is a review and summary of the core drilling operations component of the Honduras Geothermal Resource Development Project at the Platanares geothermal prospect in Honduras, Central America. Three intermediate depth (428 to 679 m) coreholes are the first continuously cored geothermal exploration boreholes in Honduras. These coring operations are part of the Central America Energy Resource Project (CAERP) effort funded by the Agency for International Development (AID) and implemented by the Los Alamos National Laboratory (Los Alamos) in cooperation with the Empresa Nacional de Energia Electrica (ENEE) and the United States Geological Survey (USGS). This report emphasizes coring operations with reference to the stratigraphy, thermal gradient, and flow test data of the boreholes. The primary objectives of this coring effort were (1) to obtain quantitative information on the temperature distribution as a function of depth, (2) to recover fluids associated with the geothermal reservoir, (3) to recover 75% or better core from the subsurface rock units, and (4) to drill into the subsurface rock as deeply as possible in order to get information on potential reservoir rocks, fracture density, permeabilities, and alteration histories of the rock units beneath the site. The three exploration coreholes drilled to depths of 650, 428 and 679 m, respectively, encountered several hot water entries. Coring operations and associated testing began in mid-October 1986 and were completed at the end of June 1987.

  18. Sandia Energy - Geothermal Energy & Drilling Technology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatingsUltra-High-Voltage SiliconEnergyFailure ModeGeothermal

  19. Drilling Addendum to Resource Assessment of Low- and Moderate-Temperature Geothermal Waters in Calistoga, Napa County, California

    SciTech Connect (OSTI)

    Taylor, Gary C.; Bacon, C. Forrest; Chapman, Rodger H.; Chase, Gordon W.; Majmundar, Hasmukhrai H.

    1981-05-01T23:59:59.000Z

    This addendum report presents the results of the California Division of Mines and Geology (CDMG) drilling program at Calistoga, California, which was the final geothermal-resource assessment investigation performed under terms of the second year contract (1979-80) between the U.S. Department of Energy (DOE) and the CDMG under the State Coupled Program. This report is intended to supplement information presented in CDMG's technical report for the project year, ''Resource Assessment of Low- and Moderate-Temperature Geothermal Waters in Calistoga, Napa County, California''. During the investigative phase of the CDMG's Geothermal Project, over 200 well-driller's reports were obtained from the Department of Water Resources (DWR). It was hoped that the interpretation and correlation of these logs would reveal the subsurface geology of the Upper Napa Valley and also provide a check for the various geophysical surveys that were performed in the course of the study. However, these DWR driller logs proved to be inadequate due to the brief, non-technical, and erroneous descriptions contained on the logs. As a result of the lack of useable drill-hole data, and because information was desired from,deeper horizons, it became evident that drilling some exploratory holes would be necessary in order to obtain physical evidence of the stratigraphy and aquifers in the immediate Calistoga area. Pursuant to this objective, a total of twelve sites were selected--four under jurisdiction of Napa County and eight under jurisdiction of the City of Calistoga. A moratorium is currently in existence within Napa County on most geothermal drilling, and environmental and time constraints precluded CDMG from obtaining the necessary site permits within the county. However, a variance was applied for and obtained from the City of Calistoga to allow CDMG to drill within the city limits. With this areal constraint and also funding limits in mind, six drilling sites were selected on the basis of (1) proximity to areas where geophysical surveys had been performed, (2) accessibility of the site for drill rig setup, and (3) favorability for obtaining the maximum information possible concerning the geology and the resources. Necessary landowner permission and permits were secured for these sites, and actual drilling began on December 17, 1980. Drilling was terminated on February 4, 1981, with the completion of three holes that ranged in depth from 205 to 885 feet. Use of a relatively new drilling technique called the Dual Tube Method enabled the collection of precise subsurface data of a level of detail never before obtained in the Calistoga area. As a result, a totally new and unexpected picture of the geothermal reservoir conditions there has been obtained, and is outlined in this addendum report.

  20. Geothermal drilling and completion technology development program. Quarterly progress report, January-March 1980

    SciTech Connect (OSTI)

    Varnado, S.G. (ed.)

    1980-04-01T23:59:59.000Z

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

  1. Geothermal drilling and completion technology development program. Annual progress report, October 1979-September 1980

    SciTech Connect (OSTI)

    Varnado, S.G. (ed.)

    1980-11-01T23:59:59.000Z

    The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

  2. Geothermal drilling and completion technology development program. Quarterly progress report, October-December 1979

    SciTech Connect (OSTI)

    Varnado, S.G. (ed.)

    1980-01-01T23:59:59.000Z

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, and completion technology. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1982 and by 50% by 1986.

  3. Geothermal drilling and completion technology development program. Quarterly progress report, April-June 1980

    SciTech Connect (OSTI)

    Varnado, S.G.

    1980-07-01T23:59:59.000Z

    The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are reported. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

  4. Geothermal drilling ad completion technology development program. Semi-annual progress report, April-September 1979

    SciTech Connect (OSTI)

    Varnado, S.G. (ed.)

    1980-05-01T23:59:59.000Z

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, and completion technology. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1982 and by 50% by 1986.

  5. Geopressured geothermal drilling and completions technology development needs

    SciTech Connect (OSTI)

    Maish, A.B.

    1981-03-01T23:59:59.000Z

    Geopressured geothermal formations found in the Texas and Louisiana gulf coast region and elsewhere have the potential to supply large quantities of energy in the form of natural gas and warm brine (200 to 300/sup 0/F). Advances are needed, however, in hardware technology, well design technology, and drilling and completion practices to enable production and testing of exploratory wells and to enable economic production of the resource should further development be warranted. This report identifies needed technology for drilling and completing geopressured geothermal source and reinjection wells to reduce the cost and to accelerate commercial recovery of this resource. A comprehensive prioritized list of tasks to develop necessary technology has been prepared. Tasks listed in this report address a wide range of technology needs including new diagnostic techniques, control technologies, hardware, instrumentation, operational procedure guidelines and further research to define failure modes and control techniques. Tasks are organized into the functional areas of well design, drilling, casing installation, cementing, completions, logging, brine reinjection and workovers.

  6. Evaluation of aqueous-foam surfactants for geothermal drilling fluids

    SciTech Connect (OSTI)

    Rand, P.B.; Montoya, O.J.

    1983-07-01T23:59:59.000Z

    Aqueous foams are potentially useful drilling and cleanout fluids for geothermal applications. Successful use of foams requires surfactants (foaming agents) that can survive in the high-temperature geothermal environment. In this study, solutions of aqueous-foam-forming surfactants have been exposed to 260/sup 0/C (500/sup 0/F) and 310/sup 0/C (590/sup 0/F) in various chemical environments to determine if they can survive and make foams after exposure. Comparison of foams before and after exposure and the change in solution pH were used to evaluate their performance. Controlled liquid-volume-fraction foams, made in a packed-bed foam generator, were used for all tests. These tests have shown that many commercially available surfactants can survive short high-temperature cycles in mild acids, mild bases, and salt solutions as evidenced by their ability to make foams after exposure to high temperatures.

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

    SciTech Connect (OSTI)

    Mark Person, Lara Owens, James Witcher

    2010-02-17T23:59:59.000Z

    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.

  8. Selected Data from Continental Scientific Drilling Core Holes...

    Open Energy Info (EERE)

    Selected Data from Continental Scientific Drilling Core Holes VC-1 and VC-2A, Valles Caldera, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Report:...

  9. Thermal Gradient Holes At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Activity Details Location Long Valley Caldera Geothermal Area Exploration Technique Thermal Gradient Holes Activity Date 1991 - 1991 Usefulness not useful DOE-funding Unknown...

  10. Thermal Gradient Holes At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Activity Details Location Long Valley Caldera Geothermal Area Exploration Technique Thermal Gradient Holes Activity Date 1978 - 1985 Usefulness useful DOE-funding Unknown...

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

    SciTech Connect (OSTI)

    Satrape, J.V.

    1987-11-24T23:59:59.000Z

    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.

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

    Open Energy Info (EERE)

    hole with drill cuttings. The second test, on November 2, 1978, utilized a nitrogen-foam-water mixture to clean residual particles from bottom hole, following which nitrogen was...

  13. Systems study of drilling for installation of geothermal heat pumps

    SciTech Connect (OSTI)

    Finger, J.T.; Sullivan, W.N.; Jacobson, R.D.; Pierce, K.G.

    1997-09-01T23:59:59.000Z

    Geothermal, or ground-source, heat pumps (GHP) are much more efficient than air-source units such as conventional air conditioners. A major obstacle to their use is the relatively high initial cost of installing the heat-exchange loops into the ground. In an effort to identify drivers which influence installation cost, a number of site visits were made during 1996 to assess the state-of-the-art in drilling for GHP loop installation. As an aid to quantifying the effect of various drilling-process improvements, we constructed a spread-sheet based on estimated time and material costs for all the activities required in a typical loop-field installation. By substituting different (improved) values into specific activity costs, the effect on total project costs can be easily seen. This report contains brief descriptions of the site visits, key points learned during the visits, copies of the spread-sheet, recommendations for further work, and sample results from sensitivity analysis using the spread-sheet.

  14. Hydrothermal spallation drilling and advanced energy conversion technologies for Engineered Geothermal Systems

    E-Print Network [OSTI]

    Augustine, Chad R

    2009-01-01T23:59:59.000Z

    The purpose of this research was to study the various factors affecting the economic and technical feasibility of Engineered Geothermal Systems, with a special emphasis on advanced drilling technologies. The first part of ...

  15. IDAPA 37.03.04 - Drilling for Geothermal Resources | Open Energy...

    Open Energy Info (EERE)

    LibraryAdd to library Legal Document- RegulationRegulation: IDAPA 37.03.04 - Drilling for Geothermal ResourcesLegal Published NA Year Signed or Took Effect 2014 Legal...

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

    Open Energy Info (EERE)

    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...

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

    SciTech Connect (OSTI)

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

    1981-01-01T23:59:59.000Z

    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)

  18. High precision, rapid laser hole drilling

    DOE Patents [OSTI]

    Chang, Jim J.; Friedman, Herbert W.; Comaskey, Brian J.

    2013-04-02T23:59:59.000Z

    A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.

  19. High precision, rapid laser hole drilling

    DOE Patents [OSTI]

    Chang, Jim J.; Friedman, Herbert W.; Comaskey, Brian J.

    2007-03-20T23:59:59.000Z

    A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.

  20. High precision, rapid laser hole drilling

    DOE Patents [OSTI]

    Chang, Jim J.; Friedman, Herbert W.; Comaskey, Brian J.

    2005-03-08T23:59:59.000Z

    A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.

  1. Advanced geothermal foam drilling systems (AFS) -- Phase 1 final report, Part 1

    SciTech Connect (OSTI)

    W. C. Maurer

    1999-06-30T23:59:59.000Z

    An advanced coiled-tubing foam drilling system is being developed where two concentric strings of coiled tubing are used to convey water and air to the hole bottom where they are mixed together to produce foam for underbalanced drilling. This system has the potential to significantly reduce drilling costs by increasing drilling rates (due to the motor being powered by water), and reducing compressor and nitrogen costs (due to lower gas pressures and volumes).

  2. Down hole drilling motor with pressure balanced bearing seals

    SciTech Connect (OSTI)

    McDonald, W.J.

    1981-01-27T23:59:59.000Z

    A down hole drilling motor, e.g., A turbodrill, which is connected to a string of drill pipe has a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section has rotor and stator blades which are crescent shaped in cross section with each blade having an exit angle of 14*-23* for maximum turbine efficiency. The bearing shaft is provided with chevron rotary seals positioned below the rotary bearings carrying both radial and vertical thrust. Fluid lubricant fills the space from the rotary seals to a predetermined level above the bearings. A piston seals the lubricant chamber and is pressurized by drilling fluid (I.E. Mud) flowing through the tool. A layer of lubricant fluid overlies the first piston and has a second piston covering said fluid and transmitting pressure from the drilling fluid to the lubricant fluid surrounding the bearings. The drilling mud that causes the turbodrill to rotate is pumped away from the bearing seals by pump means operated by the drilling motor to balance the pressure on the upper and lower bearing seals.

  3. Thermal Gradient Holes At Lightning Dock Geothermal Area (Arnold...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis Known shallow hot spot in Animas Valley Notes Four thermal gradient holes were authorized to be drilled by AMEX, but no results were...

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

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    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.

  5. Historical Exploration And Drilling Data From Geothermal Prospects...

    Open Energy Info (EERE)

    in providing the necessary data for successful citing of geothermal exploration, production, and injection wells, which appears to be electrical geophysical surveys. Most...

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

    SciTech Connect (OSTI)

    Henkle, William R.; Ronne, Joel

    2008-06-15T23:59:59.000Z

    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.

  7. Google.org-Backed Potter Drilling Blazing Geothermal Trail |...

    Broader source: Energy.gov (indexed) [DOE]

    during World War II. During his time at the Los Alamos National Laboratory (LANL) in New Mexico, Potter discovered new ways to drill for materials found in the subsurface, which...

  8. Risk of damaging the wires by edges of laser drilled holes in the end plugs

    E-Print Network [OSTI]

    Staude, A; Trefzger, T M

    1998-01-01T23:59:59.000Z

    No sign of damage to the wire by edges of the laser drilled hole has been seen, based on a sample of four end plugs.

  9. Failure mechanisms of polycrystalline diamond compact drill bits in geothermal environments

    SciTech Connect (OSTI)

    Hoover, E.R.; Pope, L.E.

    1981-09-01T23:59:59.000Z

    Over the past few years the interest in polycrystalline diamond compact (PDC) drill bits has grown proportionately with their successful use in drilling oil and gas wells in the North Sea and the United States. This keen interest led to a research program at Sandia to develop PDC drill bits suitable for the severe drilling conditions encountered in geothermal fields. Recently, three different PDC drill bits were tested using either air or mud drilling fluids: one in the laboratory with hot air, one in the Geysers field with air, and one in the Geysers field with mud. All three tests were unsuccessful due to failure of the braze joint used to attach the PDC drill blanks to the tungsten carbide studs. A post-mortem failure analysis of the defective cutters identified three major failure mechanisms: peripheral nonbonding caused by braze oxidation during the brazing step, nonbonding between PDC drill blanks and the braze due to contamination prior to brazing, and hot shortness. No evidence was found to suggest that the braze failures in the Geysers field tests were caused by frictional heating. In addition, inspection of the PDC/stud cutter assemblies using ultrasonic techniques was found to be ineffective for detecting the presence of hot shortness in the braze joint.

  10. Exploration and drilling for geothermal heat in the Capital District, New York. Volume 4. Final report

    SciTech Connect (OSTI)

    Not Available

    1983-08-01T23:59:59.000Z

    The Capital District area of New York was explored to determine the nature of a hydrothermal geothermal system. The chemistry of subsurface water and gas, the variation in gravity, magnetism, seismicity, and temperature gradients were determined. Water and gas analyses and temperature gradient measurements indicate the existence of a geothermal system located under an area from Ballston Spa, southward to Altamont, and eastward toward Albany. Gravimetric and magnetic surveys provided little useful data but microseismic activity in the Altamont area may be significant. Eight wells about 400 feet deep, one 600 feet and one 2232 feet were drilled and tested for geothermal potential. The highest temperature gradients, most unusual water chemistries, and greatest carbon dioxide exhalations were observed in the vicinity of the Saratoga and McGregor faults between Saratoga Springs and Schenectady, New York, suggesting some fault control over the geothermal system. Depths to the warm fluids within the system range from 500 meters (Ballston Spa) to 2 kilometers (Albany).

  11. Exploration and drilling for geothermal heat in the Capital District, New York. Final report

    SciTech Connect (OSTI)

    Not Available

    1983-08-01T23:59:59.000Z

    The Capital District area of New York was explored to determine the nature of a hydrothermal geothermal system. The chemistry of subsurface water and gas, the variation in gravity, magnetism, seismicity, and temperature gradients were determined. Water and gas analyses and temperature gradient measurements indicate the existence of a geothermal system located under an area from Ballston Spa, southward to Altamont, and eastware toward Albany. Gravimetric and magnetic surveys provided little useful data but microseismic activity in the Altamont area may be significant. Eight wells about 400 feet deep, one 600 feet and one 2232 feet were drilled and tested for geothermal potential. The highest temperature gradients, most unusual water chemistries, and greatest carbon dioxide exhalations were observed in the vicinity of the Saratoga and McGregor faults between Saratoga Springs and Schenectady, New York, suggesting some fault control over the geothermal system. Depths to the warm fluids within the system range from 500 meters (Ballston Spa) to 2 kilometers (Albany).

  12. Dual-axis hole-drilling ESPI residual stress measurements

    SciTech Connect (OSTI)

    Steinzig, Michael [Los Alamos National Laboratory; Schajer, Gary [UNIV OF BRITISH COLUMBIA

    2008-01-01T23:59:59.000Z

    A novel dual-axis ESPI hole-drilling residual stress measurement method is presented. The method enables the evaluation of all the in-plane normal stress components with similar response to measurement errors, significantly lower than with single-axis measurements. A numerical method is described that takes advantage of, and compactly handles, the additional optical data that are available from the second measurement axis. Experimental tests were conducted on a calibrated specimen to demonstrate the proposed method, and the results supported theoretical expectations.

  13. Wear mechanisms for polycrystalline-diamond compacts as utilized for drilling in geothermal environments. Final report

    SciTech Connect (OSTI)

    Hibbs, L.E. Jr.; Sogoian, G.C.

    1983-05-01T23:59:59.000Z

    The work, which was performed in the period from 12/6/79 to 9/30/81 included: (1) rock cutting experiments with single point polycrystalline sintered diamond compact (PDC) cutters to quantitatively determine cutter wear rates and identify wear modes, (2) PDC rock cutting experiments to measure temperatures developed and examine the effects of tool wear, cutting parameters and coolant flow rates on temperature generation, (3) assisting in performing full scale laboratory drilling experiments with PDC bits, using preheated air to simulate geothermal drilling conditions, and in analyzing and reporting the experimental results, and (4) acting in a consulting role with the purpose of establishing design specifications for geothermal hard matrix PDC bits to be procured by Sandia Laboratories for test purposes.

  14. Exploratory Boreholes At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    core hole was drilled to 600 m depth approximately 2 km west of the geothermal power plants. The excellent quality of these core holes yielded considerable new information into...

  15. Mineralogy of drill hole UE-25p#1 at Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Chipera, S.J.; Bish, D.L.

    1988-05-01T23:59:59.000Z

    Drill hole UE-25p{number_sign}1 is located east of the candidate repository block at Yucca Mountain, Nevada, and as such provides information on the geology of the accessible environment. The hole was drilled to a depth of 1807 m (5923 ft) and is unique in that it penetrates tuffs that are older than any volcanic units previously encountered in drill holes at Yucca Mountain. In addition, it is the only hole drilled to date that penetrates the base of the tuff sequence and enters the underlying Paleozoic dolomite basement. We have examined the mineralogy of drill cuttings, core, and sidewall samples from drill hole UE-25p{number_sign}1 is similar to that in the other drill holes examined at Yucca Mountain. The only significant differences in mineralogy from other drill holes include the presence of dolomite in the Paleozoic carbonate rocks and the occurrence of up to 3% laumontite, a Ca-zeolite, in four samples of the Lithic Ridge Tuff. 15 refs., 5 figs., 4 tabs.

  16. Handbook of Best Practices for Geothermal Drilling Released | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEN TO THE HIGHWAYSProjectEnergy Handbook of

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

    SciTech Connect (OSTI)

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

    1983-01-01T23:59:59.000Z

    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.

  18. Drilling for Geothermal Resources Rules - Idaho | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, New Jersey: EnergyDrewDrilling FluidsIdaho Jump to:

  19. JOIDES Resolution Drill Ship Drill into Indian Ridge MOHO Hole Cleaning Study

    E-Print Network [OSTI]

    Lindanger, Catharina

    2014-05-03T23:59:59.000Z

    The Integrated Ocean Drilling Program (IODP) uses a variety of technology for use in its deep water scientific research, including the Joint Oceanographic Institutions for Deep Earth Sampling (JOIDES) Resolution (JR) drill ship. The JR drill ship...

  20. High-temperature directional drilling turbodrill

    SciTech Connect (OSTI)

    Neudecker, J.W.; Rowley, J.C.

    1982-02-01T23:59:59.000Z

    The development of a high-temperature turbodrill for directional drilling of geothermal wells in hard formations is summarized. The turbodrill may be used for straight-hole drilling but was especially designed for directional drilling. The turbodrill was tested on a dynamometer stand, evaluated in laboratory drilling into ambient temperature granite blocks, and used in the field to directionally drill a 12-1/4-in.-diam geothermal well in hot 200/sup 0/C (400/sup 0/F) granite at depths to 10,5000 ft.

  1. MICRON-SCALE DEEP HOLE DRILLING FOR BERYLLIUM CAPSULE FILL APPLICATIONS

    SciTech Connect (OSTI)

    Armstrong, J P; Rubenchik, A M; Gunther, J; Stuart, B C

    2005-11-29T23:59:59.000Z

    A laser processing system has been developed to drill high aspect ratio holes through the impermeable beryllium capsules envisioned for ignition shots on NIF. The drilling system was designed to produce holes with an entrance and exit diameter of approximately 5 {micro}m through the full 175 {micro}m thickness of the capsule. To meet these requirements, a frequency doubled femtosecond-class Ti:Sapphire laser is directed through a high numerical aperture lens to provide the spot geometry needed to drill the hole. The laser pulse is confined by the metallic walls of the hole, thereby maintaining the diameter of the channel well beyond the Rayleigh range of the optical system. Presented is the current state of this work-in-progress, including descriptions of the device and the technique used to produce the holes. The various means of characterizing the laser-drilled channels are also discussed.

  2. Probing embryonic tissue mechanics with laser hole-drilling

    E-Print Network [OSTI]

    Ma, Xiaoyan; Scully, Peter C; Hutson, M Shane

    2008-01-01T23:59:59.000Z

    We have used laser hole-drilling to assess mechanical changes in an embryonic epithelium during development - in vivo and with subcellular resolution. This method uses a single laser pulse to ablate a cylindrical hole (1 micron in diameter, 5-7 micron tall) clean through the epithelium, and tracks the subsequent recoil of adjacent cells (with ms time resolution). We investigate dorsal closure in the fruit fly with emphasis on apical constriction of amnioserosa cells. We find that substantial in-plane tension is carried across each cell surface and not just along cell-cell interfaces. In early phases of constriction, the tension is 1.6-fold greater along cell-cell interfaces. Later, the two tensions are indistinguishable. Other changes associated with constriction include a decrease in the characteristic recoil times and an increased anisotropy. The smaller time constants imply a more solid-like tissue. The anisotropy matches changes in the underlying quasi-hexagonal cellular mesh. The results of these laser h...

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

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    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.

  4. Field drilling tests on improved geothermal unsealed roller-cone bits. Final report

    SciTech Connect (OSTI)

    Hendrickson, R.R.; Jones, A.H.; Winzenried, R.W.; Maish, A.B.

    1980-05-01T23:59:59.000Z

    The development and field testing of a 222 mm (8-3/4 inch) unsealed, insert type, medium hard formation, high-temperature bit are described. Increased performance was gained by substituting improved materials in critical bit components. These materials were selected on bases of their high temperature properties, machinability and heat treatment response. Program objectives required that both machining and heat treating could be accomplished with existing rock bit production equipment. Six of the experimental bits were subjected to air drilling at 240/sup 0/C (460/sup 0/F) in Franciscan graywacke at the Geysers (California). Performances compared directly to conventional bits indicate that in-gage drilling time was increased by 70%. All bits at the Geysers are subjected to reaming out-of-gage hole prior to drilling. Under these conditions the experimental bits showed a 30% increase in usable hole drilled, compared with the conventional bits. The materials selected improved roller wear by 200%, friction per wear by 150%, and lug wear by 150%. These tests indicate a potential well cost savings of 4 to 8%. Savings of 12% are considered possible with drilling procedures optimized for the experimental bits.

  5. Trace-element geochemistry of gradient hole cuttings: Beowawe geothermal area, Nevada

    SciTech Connect (OSTI)

    Christensen, O.D.

    1980-12-01T23:59:59.000Z

    Multielement geochemical analysis of drill cuttings from 26 shallow temperature-gradient drill holes and of surface rock samples reveals trace element distributions developed within these rocks as a consequence of chemical interaction with thermal fluid within the Beowawe geothermal area. The presently discharging thermal fluids are dilute in all components except silica, suggesting that the residence time of these fluids within the thermal reservoir has been short and that chemical interaction with the reservoir rock minimal. Interaction between these dilute fluids and rocks within the system has resulted in the development of weak chemical signatures. The absence of stronger signatures in rocks associated with the present system suggests that fluids have had a similar dilute chemistry for some time. The spatial distribution of elements commonly associated with geothermal systems, such as As, Hg and Li, and neither laterally nor vertically continuous. This suggests that there is not now, nor has there been in the past, pervasive movement of thermal fluid throughout the sampled rock but, instead, that isolated chemical anomalies represent distinct fluid-flow chanels. Discontinuous As, Li and Hg concentrations near White Canyon to the east of the presently active surface features record the effects of chemical interaction of rocks with fluids chemically unlike the presently discharging fluids. The observed trace element distributions suggest that historically the Beowawe area has been the center of more than one hydrothermal event and that the near-surface portion of the present hot-water geothermal system is controlled by a single source fracture, the Malpais Fault, or an intersection of faults at the sinter terrace.

  6. Geothermal evaluation of Kansas: preliminary results

    SciTech Connect (OSTI)

    Steeples, D.W.; Ruscetta, C.A.; Foley, D. (eds.)

    1981-05-01T23:59:59.000Z

    Information from the literature and from four drill holes in Kansas is presented. Geothermal gradients and heat flow measurements are presented. An aeromagnetic map of Kansas is included. (MHR)

  7. Heat Flow From Four New Research Drill Holes In The Western Cascades...

    Open Energy Info (EERE)

    New Research Drill Holes In The Western Cascades, Oregon, Usa Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Heat Flow From Four New Research...

  8. Results Of An Experimental Drill Hole At The Summit Of Kilauea...

    Open Energy Info (EERE)

    Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano,...

  9. A fast method for morphological analysis of laser drilling holes M. Schneider, L. Berthe, M. Muller, and R. Fabbro

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A fast method for morphological analysis of laser drilling holes M. Schneider, L. Berthe, M. Muller, France This paper presents an original method for analyzing laser drilled holes. The so-called Direct easier, for quality control as well as process development in laser drilling. © 2010 Laser Institute

  10. Down hole drilling motor with pressure balanced bearing seals

    SciTech Connect (OSTI)

    Maurer, W.C.

    1980-09-30T23:59:59.000Z

    A downhole drilling motor, e.g., a turbodrill is described, which is connected to a string of drill pipe has a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section has rotor and stator blades which are crescent shaped in cross section with each blade having an exit angle of 14-23/sup 0/ for maximum turbine efficiency. The drilling motor may alternatively be a positive displacement motor. The bearing shaft is provided with chevron rotary seals positioned below the rotary bearings carrying both radial and vertical thrust. Fluid lubricant fills the space from the rotary seals to a predetermined level above the bearings. A piston seals the lubricant chamber and is pressurized by drilling fluid (i.e. mud) flowing through the tool. A layer of lubricant fluid overlies the first piston and has a second piston covering said fluid and transmitting pressure from the drilling fluid to the lubricant fluid surrounding the bearings. The drilling mud is divided into two streams, one of which rotates the drill bit, and the other of which passes through the drill bit. The pressure drop across the drilling motor equals the pressure drop across the drill bit, thus balancing the pressure on the bearing seals.

  11. Advanced Geothermal Turbodrill

    SciTech Connect (OSTI)

    W. C. Maurer

    2000-05-01T23:59:59.000Z

    Approximately 50% of the cost of a new geothermal power plant is in the wells that must be drilled. Compared to the majority of oil and gas wells, geothermal wells are more difficult and costly to drill for several reasons. First, most U.S. geothermal resources consist of hot, hard crystalline rock formations which drill much slower than the relatively soft sedimentary formations associated with most oil and gas production. Second, high downhole temperatures can greatly shorten equipment life or preclude the use of some technologies altogether. Third, producing viable levels of electricity from geothermal fields requires the use of large diameter bores and a high degree of fluid communication, both of which increase drilling and completion costs. Optimizing fluid communication often requires creation of a directional well to intersect the best and largest number of fracture capable of producing hot geothermal fluids. Moineau motor stators made with elastomers cannot operate at geothermal temperatures, so they are limited to the upper portion of the hole. To overcome these limitations, Maurer Engineering Inc. (MEI) has developed a turbodrill that does not use elastomers and therefore can operate at geothermal temperatures. This new turbodrill uses a special gear assembly to reduce the output speed, thus allowing a larger range of bit types, especially tri-cone roller bits, which are the bits of choice for drilling hard crystalline formations. The Advanced Geothermal Turbodrill (AGT) represents a significant improvement for drilling geothermal wells and has the potential to significantly reduce drilling costs while increasing production, thereby making geothermal energy less expensive and better able to compete with fossil fuels. The final field test of the AGT will prepare the tool for successful commercialization.

  12. Mechanism of laser drilling superhigh-aspect-ratio holes in polymers

    SciTech Connect (OSTI)

    Tokarev, V N, E-mail: tokarev@kapella.gpi.r [Natural Science Center, A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

    2006-07-31T23:59:59.000Z

    A brief review of recent theoretical and experimental studies of multipulse laser drilling keyholes in polymers is presented. The stationary keyhole profile is obtained after irradiation by a quite great number of laser pulses due to self-organisation processes and is a new more stable state of the surface irradiated by intense light. This concept together with ample experimental data obtained for various polymers form the basis of the analytical model of multipulse drilling holes with a superhigh depth - diameter ratio (300-600) (the so-called aspect ratio) by using UV excimer KrF laser radiation. The model reveals the main factors controlling the parameters of drilling holes by nanosecond UV pulses and, in particular, determines the conditions for drilling holes with virtually parallel side walls and very high aspect ratios. (special issue devoted to the 90th anniversary of a.m. prokhorov)

  13. Deep Geothermal Drilling Using Millimeter Wave Technology Final Technical Research Report

    SciTech Connect (OSTI)

    Oglesby, Kenneth [Impact Technologies LLC; Woskov, Paul [MIT; Einstein, Herbert [MIT

    2014-12-30T23:59:59.000Z

    Conventional drilling methods are very mature, but still have difficulty drilling through very deep,very hard and hot rocks for geothermal, nuclear waste entombment and oil and gas applications.This project demonstrated the capabilities of utilizing only high energy beams to drill such rocks,commonly called ‘Direct Energy Drilling’, which has been the dream of industry since the invention of the laser in the 1960s. A new region of the electromagnetic spectrum, millimeter wave (MMW) wavelengths at 30-300 giga-hertz (GHz) frequency was used to accomplish this feat. To demonstrate MMW beam drilling capabilities a lab bench waveguide delivery, monitoring and instrument system was designed, built and tested around an existing (but non-optimal) 28 GHz frequency, 10 kilowatt (kW) gyrotron. Low waveguide efficiency, plasma generation and reflected power challenges were overcome. Real-time monitoring of the drilling process was also demonstrated. Then the technical capability of using only high power intense millimeter waves to melt (with some vaporization) four different rock types (granite, basalt, sandstone, limestone) was demonstrated through 36 bench tests. Full bore drilling up to 2” diameter (size limited by the available MMW power) was demonstrated through granite and basalt samples. The project also demonstrated that MMW beam transmission losses through high temperature (260oC, 500oF), high pressure (34.5 MPa, 5000 psi) nitrogen gas was below the error range of the meter long path length test equipment and instruments utilized. To refine those transmission losses closer, to allow extrapolation to very great distances, will require a new test cell design and higher sensitivity instruments. All rock samples subjected to high peak temperature by MMW beams developed fractures due to thermal stresses, although the peak temperature was thermodynamically limited by radiative losses. Therefore, this limited drill rate and rock strength data were not able to be determined experimentally. New methods to encapsulate larger rock specimens must be developed and higher power intensities are needed to overcome these limitations. It was demonstrated that rock properties are affected (weakening then strengthened) by exposure to high temperatures. Since only MMW beams can economically reach rock temperatures of over 1650oC, even exceeding 3000oC, that can cause low viscosity melts or vaporization of rocks. Future encapsulated rock specimens must provide sufficiently large sizes of thermally impacted material to provide for the necessary rock strength, permeability and other analyzes required. Multiple MMW field systems, tools and methods for drilling and lining were identified. It was concluded that forcing a managed over-pressure drilling operation would overcome water influx and hot rock particulates handling problems, while simultaneously forming the conditions necessary to create a strong, sealing rock melt liner. Materials that contact hot rock surfaces were identified for further study. High power windows and gases for beam transmission under high pressures are critical paths for some of the MMW drilling systems. Straightness/ alignment can be a great benefit or a problem, especially if a MMW beam is transmitted through an existing, conventionally drilled bore.

  14. Sandia National Laboratories: Geothermal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Geothermal Geothermal Energy & Drilling Technology On November 10, 2010, in Geothermal energy is an abundant energy resource that comes from tapping the natural heat of molten rock...

  15. Feasibility study of tuned-resonator, pulsating cavitating water jet for deep-hole drilling

    SciTech Connect (OSTI)

    Johnson, V.E. Jr.; Lindenmuth, W.T.; Conn, A.F.; Frederick, G.S.

    1981-08-01T23:59:59.000Z

    This study presents the advantages of pulsing a submerged jet to increase its erosion capability (particularly as caused by cavitation) in augmenting deep-hole drill bits. Various methods of accomplishing the pulsation are presented and discussed. The most attractive systems uncovered are acoustic oscillators which passively accomplish pulsations in the flow at frequencies corresponding to a Strouhal number in the range of 0.2 to 1.0. Such passive oscillators are assessed to be feasible candidates for development into practical deep hole drill bit systems and a long range plan for this research and development is presented and discussed.

  16. Turbodrilling in the Geothermal Environment

    SciTech Connect (OSTI)

    Herbert, P.

    1981-01-01T23:59:59.000Z

    Geothermal drilling, historically, has presented what seemed to be insurmountable barriers to the efficient and extended use of downhole drilling motors, especially those containing elastomeric bearing or motor components. In addition to being damaging to rubber, the typical temperatures of 177 to 371 C (350 to 700 F) create other operating problems as well. Recent innovations, specifically in turbodrill design, have opened heretofore unrealized potentials and allowed, for the first time, extended downhole drilling of geothermal wells. A considerable amount of experience has been obtained both in The Geysers and Imperial County areas of California primarily in directional drilling applications using insert, diamond, and polycrystallines diamond compact bits. Other hot-hole applications are currently being drilled successfully or planned in other states, both onshore and offshore. The turbodrill is devoid of any elastomers or other temperature-sensitive materials, hence, its capabilities are closely matched to the requirements of the industry. The bearing assembly can withstand the rigors found in the drilling of typical geothermal formations and provide the performance necessary to stay in the hole, thus providing increased penetration rates and, hence, more economical drilling. This paper presents case histories of recent turbodrill performances in all areas where used. Furthermore, data will be presented showing the performance of insert, diamond, and polycrystalline diamond bits as they relate to the turbodrill, together with forecasts as to the potential that turbodrills have to offer in accelerating and controlling the drilling of geothermal wells.

  17. Turbodrilling in the geothermal environment

    SciTech Connect (OSTI)

    Herbert, P.

    1981-01-01T23:59:59.000Z

    Geothermal drilling, historically, has presented what seemed to be insurmountable barriers to the efficient and extended use of downhole drilling motors, especially those containing elastomeric bearing or motor components. In addition to being damaging to rubber, the typical temperatures of 177/sup 0/ to 371/sup 0/C (350/sup 0/ to 700/sup 0/F) create other operating problems as well. Recent innovations, specifically in turbodrill design, have opened heretofore unrealized potentials and allowed, for the first time, extended downhole drilling of geothermal wells. A considerable amount of experience has been obtained both in The Geysers and Imperial County areas of California primarily in directional drilling applications using insert, diamond, and polycrystallines diamond compact bits. Other hot-hole applications are currently being drilled successfully or planned in other states, both on- and off-shore. The turbodrill is devoid of any elastomers or other temperature-sensitive materials, hence, its capabilities are closely matched to the requirements of the industry. The bearing assembly can withstand the rigors found in the drilling of typical geothermal formations and provide the performance necessary to stay in the hole, thus providing increased penetration rates and, hence, more economical drilling. This paper will present case histories of recent turbodrill performances in all areas where used. Furthermore, data will be presented showing the performance of insert, diamond, and polycrystalline diamond bits as they relate to the turbodrill, together with forecasts as to the potential that turbodrills have to offer in accelerating and controlling the drilling of geothermal wells.

  18. Geothermal News | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    January 21, 2011 Handbook of Best Practices for Geothermal Drilling Released The Handbook of Best Practices for Geothermal Drilling, funded by the U.S. Department of Energy's...

  19. A Study To Determine Necessity of Pilot Holes When Drilling Shallow Gas Zones Using Top Hole Dual Gradient Drilling Technology

    E-Print Network [OSTI]

    King, Lauren

    2010-01-16T23:59:59.000Z

    Mud Weight OWM Old Weight Mud RBOP Rotating Blowout Preventer SICP Shut In Casing Pressure SIDPP Shut In Drillpipe Pressure SMD JIP SubSea MudLift Drilling Joint Industry Project TD Total Depth TVD True Vertical Depth vii TABLE... Geometry and Subsea Pump Data ............................................. 16 Figure 5- Kick and Formation Property Data...................................................... 17 Figure 6- Pump Data and Other Information...

  20. Laser-Mechanical Drilling for Geothermal Energy: Low-Contact Drilling Technology to Enable Economical EGS Wells

    SciTech Connect (OSTI)

    None

    2010-01-15T23:59:59.000Z

    Broad Funding Opportunity Announcement Project: Foro Energy is developing a unique capability and hardware system to transmit high power lasers over long distances via fiber optic cables. This laser power is integrated with a mechanical drilling bit to enable rapid and sustained penetration of hard rock formations too costly to drill with mechanical drilling bits alone. The laser energy that is directed at the rock basically softens the rock, allowing the mechanical bit to more easily remove it. Foro Energy’s laser-assisted drill bits have the potential to be up to 10 times more economical than conventional hard-rock drilling technologies, making them an effective way to access the U.S. energy resources currently locked under hard rock formations.

  1. INTEGRATED DRILLING SYSTEM USING MUD ACTUATED DOWN HOLE HAMMER AS PRIMARY ENGINE

    SciTech Connect (OSTI)

    John V. Fernandez; David S. Pixton

    2005-12-01T23:59:59.000Z

    A history and project summary of the development of an integrated drilling system using a mud-actuated down-hole hammer as its primary engine are given. The summary includes laboratory test results, including atmospheric tests of component parts and simulated borehole tests of the hammer system. Several remaining technical hurdles are enumerated. A brief explanation of commercialization potential is included. The primary conclusion for this work is that a mud actuated hammer can yield substantial improvements to drilling rate in overbalanced, hard rock formations. A secondary conclusion is that the down-hole mud actuated hammer can serve to provide other useful down-hole functions including generation of high pressure mud jets, generation of seismic and sonic signals, and generation of diagnostic information based on hammer velocity profiles.

  2. Idaho Geothermal Commercialization Program. Idaho geothermal handbook

    SciTech Connect (OSTI)

    Hammer, G.D.; Esposito, L.; Montgomery, M.

    1980-03-01T23:59:59.000Z

    The following topics are covered: geothermal resources in Idaho, market assessment, community needs assessment, geothermal leasing procedures for private lands, Idaho state geothermal leasing procedures - state lands, federal geothermal leasing procedures - federal lands, environmental and regulatory processes, local government regulations, geothermal exploration, geothermal drilling, government funding, private funding, state and federal government assistance programs, and geothermal legislation. (MHR)

  3. Precision Micron Hole Drilling using a Frequency Doubled, Diode Pumped Solid State Laser

    SciTech Connect (OSTI)

    Friedman, H W; Pierce, E L

    2004-04-21T23:59:59.000Z

    This work represents the second phase of a program to demonstrate precision laser drilling with minimal Heat Affected Zone. The technique uses a Diode Pumped Solid State Laser with two wavelengths and two modes of operation. The fundamental mode of the DPSSL at 1.06 microns is used to drill a hole with a diameter of a fraction of a millimeter diameter in a millimeter thick substrate quickly, but with low precision. This hole is then machined to precision dimensions using the second harmonic of the DPSSL Laser at 532 nm using a trepanning technique. Both lasers operate in the ablative mode with peak powers at or above a giga-watt per square centimeter and pulse durations in the 80 - 100 ns range. Under these conditions, the thermal diffusion distance is of the order of a micron or less and that fact coupled with the ablative nature of the process results in little or no HAZ (heat affected zone). With no HAZ, there isn't any change in the crystalline structure surrounding the hole and the strength of the substrate is maintained. Applications for these precision holes include cooling passages in turbine blades, ports for diesel injectors, suction holes for boundary layer control on wings and holes for dies in precision extrusion processes.

  4. Thermal Gradient Holes At Lightning Dock Geothermal Area (Cunniff...

    Open Energy Info (EERE)

    R.A. Cunniff, R.L. Bowers (2003) Final Report: Enhanced Geothermal Systems Technology Phase II: Animas Valley, New Mexico Additional References Retrieved from "http:...

  5. Thermal Gradient Holes At Mt Princeton Hot Springs Geothermal...

    Open Energy Info (EERE)

    the area References J. Held, F. Henderson (2012) New developments in Colorado geothermal energy projects Additional References Retrieved from "http:en.openei.orgw...

  6. Thermal Gradient Holes At North Brawley Geothermal Area (Edmunds...

    Open Energy Info (EERE)

    of the North Brawley, Heber, East Mesa, and Salton Sea Geothermal Areas. Notes Well logs, thermal gradient data, and magnetic data were correlated to form a better geologic...

  7. Laser drilling of superdeep micron holes in various materials with a programmable control of laser radiation parameters

    SciTech Connect (OSTI)

    Basiev, Tasoltan T; Osiko, Vyacheslav V [Laser Materials and Technology Research Center, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Gavrilov, A V; Smetanin, S N; Fedin, A V [V.A.Degtyarev Kovrov State Technological Academy, Kovrov, Vladimir region (Russian Federation)

    2007-01-31T23:59:59.000Z

    The possibilities of enhancing the efficiency of laser drilling of micron holes, increasing their depth, and eliminating their conic shape are studied by using a single-mode loop Nd:YAG laser with self-phase conjugation on the gain gratings and passive Q-switching by a scanned gradiently coloured F{sub 2}{sup -}:LiF crystal. Holes of diameters 15-150 {mu}m and depth up to 20 mm with the aspect ratio (ratio of the hole depth to its diameter) of 50-155 are drilled in various metals and alloys. It is shown that passive Q-switch scanning during drilling provides the increase in the depth and speed of the laser drilling of superdeep holes by a factor of 1.5-2. (laser technologies)

  8. Investigation of laser percussion hole drilling by use of speckle correlation

    SciTech Connect (OSTI)

    Yalukova, O.; Miroshnikova, N.; Gren, P.; Sarady, I.; Sjoedahl, M

    2005-10-20T23:59:59.000Z

    In this paper speckle correlation is introduced as a tool to investigate the heat-influenced area during material processing with laser light. Two materials were investigated, a pure silver sheet and a sheet of SiC-diamond composite. The processing laser used in the experiments was a diode-pumped acousto-opticalQ-switched Nd:YAG laser that allowed percussion hole drilling to be performed using green light through a second-harmonic crystal. The measurements were performed using a continuous-wave He-Ne laser and a digital camera. The experimental results show that the heat-influenced area is {approx}5000 times larger than the actual hole being drilled and that it reaches a steady-state condition toward the end of the processing cycle.

  9. Turbodrilling in the hot-hole environment

    SciTech Connect (OSTI)

    Herbert, P.

    1982-10-01T23:59:59.000Z

    Historically, geothermal and other types of hot-hole drilling have presented what seemed to be insurmountable barriers to efficient and extended use of downhole drilling motors, particularly those containing elastomeric bearing or motor components. Typical temperatures of 350 to 700/sup 0/F (177 to 371/sup 0/C) damage the elastomers and create other operating problems, reducing the life of the motors and their ability to drill efficiently. Recent innovations in turbodrill design have opened heretofore unrealized potentials and have allowed, for the first time, extended downhole drilling time in hot-hole conditions. The unique feature of this turbodrill is the lack of any elastomers or other temperature-sensitive materials. Its capabilities are matched closely to the requirements of drilling in elevated-temperature environments. The bearing assembly can withstand conditions encountered in typical geothermal formations and provides the performance necessary to stay in the hole. The result is increased rate of penetration (ROP) and more economical drilling.

  10. Core Holes At Long Valley Caldera Geothermal Area (Lachenbruch...

    Open Energy Info (EERE)

    Regime of Long Valley Caldera. Journal of Geophysical Research. 81(5):763-768. J.L. Smith,R.W. Rex. 1977. Drilling results from eastern Long Valley Caldera. () : American...

  11. Thermal Gradient Holes At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Regime of Long Valley Caldera. Journal of Geophysical Research. 81(5):763-768. J.L. Smith,R.W. Rex. 1977. Drilling results from eastern Long Valley Caldera. () : American...

  12. Archaeological studies at Drill Hole U20az Pahute Mesa, Nye county, Nevada. [Contains bibliography

    SciTech Connect (OSTI)

    Simmons, A.H.; Hemphill, M.L.; Henton, G.H.; Lockett, C.L.; Nials, F.L.; Pippin, L.C.; Walsh, L.

    1991-07-01T23:59:59.000Z

    During the summer of 1987, the Quaternary Sciences Center (formerly Social Science Center) of the Desert Research Institute (DRI), University of Nevada System, conducted data recovery investigations at five archaeological sites located near Drill Hole U20az on the Nevada Test Site in southern Nevada. These sites were among 12 recorded earlier during an archaeological survey of the drill hole conducted as part of the environmental compliance activities of the Department of Energy (DOE). The five sites discussed in this report were considered eligible for the National Register of Historic Places and were in danger of being adversely impacted by construction activities or by effects of the proposed underground nuclear test. Avoidance of these sites was not a feasible alternative; thus DRI undertook a data recovery program to mitigate expected adverse impacts. DRI's research plan included controlled surface collections and excavation of the five sites in question, and had the concurrence of the Nevada Division of Historic Preservation and Archaeology and the Advisory Council of Historic Preservation. Of the five sites investigated, the largest and most complex, 26Ny5207, consists of at least three discrete artifact concentrations. Sites 26Ny5211 and 26Ny5215, both yielded considerable assemblages. Site 26Ny5206 is very small and probably is linked to 26Ny5207. Site 26Ny5205 contained a limited artifact assemblage. All of the sites were open-air occurrences, and, with one exception contained no or limited subsurface cultural deposits. Only two radiocarbon dates were obtained, both from 26Ny5207 and both relatively recent. While the investigations reported in the volume mitigate most of the adverse impacts from DOE activities at Drill Hole U20az, significant archaeological sites may still exist in the general vicinity. Should the DOE conduct further activities in the region, additional cultural resource investigations may be required. 132 refs., 71 figs., 44 tabs.

  13. Method and apparatus for drilling horizontal holes in geological structures from a vertical bore

    DOE Patents [OSTI]

    Summers, David A. (Rolla, MO); Barker, Clark R. (Rolla, MO); Keith, H. Dean (Rolla, MO)

    1982-01-01T23:59:59.000Z

    This invention is directed to a method and apparatus for drilling horizontal holes in geological strata from a vertical position. The geological structures intended to be penetrated in this fashion are coal seams, as for in situ gasification or methane drainage, or in oil-bearing strata for increasing the flow rate from a pre-existing well. Other possible uses for this device might be for use in the leaching of uranium ore from underground deposits or for introducing horizontal channels for water and steam injections.

  14. Greening PCB Drilling Process: Burr Minimization and Other Strategies

    E-Print Network [OSTI]

    Huang, Yu-Chu; Linke, Barbara; Bhandari, Binayak; Ahn, Sung-Hoon; Dornfeld, David

    2011-01-01T23:59:59.000Z

    Multi-layer PWB by LASER Direct Drilling,” The proceedingsresearch about using laser direct drilling to drill hole in

  15. Paradigm Shift: Burning Coal to Geothermal

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    F. Senator Richard Lugar Geothermal Groundbreaking Ceremony, May 9, 2009 Borehole Drilling Drilling Rigs Drilling Process Borehole Construction Installation of Pipe...

  16. Core Holes At Valles Caldera - Sulphur Springs Geothermal Area...

    Open Energy Info (EERE)

    Dennis L. Nielson, Pisto Larry, C.W. Criswell, R. Gribble, K. Meeker, J.A. Musgrave, T. Smith, D. Wilson (1989) Scientific Core Hole Valles Caldera No. 2B (VC-2B), New Mexico:...

  17. Geothermal Program Review XI: proceedings. Geothermal Energy - The Environmental Responsible Energy Technology for the Nineties

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    These proceedings contain papers pertaining to current research and development of geothermal energy in the USA. The seven sections of the document are: Overview, The Geysers, Exploration and Reservoir Characterization, Drilling, Energy Conversion, Advanced Systems, and Potpourri. The Overview presents current DOE energy policy and industry perspectives. Reservoir studies, injection, and seismic monitoring are reported for the geysers geothermal field. Aspects of geology, geochemistry and models of geothermal exploration are described. The Drilling section contains information on lost circulation, memory logging tools, and slim-hole drilling. Topics considered in energy conversion are efforts at NREL, condensation on turbines and geothermal materials. Advanced Systems include hot dry rock studies and Fenton Hill flow testing. The Potpourri section concludes the proceedings with reports on low-temperature resources, market analysis, brines, waste treatment biotechnology, and Bonneville Power Administration activities. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

  18. Influence of laser pulse duration on laser drilled hole quality in nickel based super alloy

    SciTech Connect (OSTI)

    Rockstroh, T.J. [GE Aircraft Engines, Cincinnati, OH (United States); Chen, Xiangli; Lotshaw, W.T. [GE Corporate Research and Development, Schenectady, NY (United States)

    1996-12-31T23:59:59.000Z

    Studies on the title subject have been performed using different commercial and research Nd:YAG laser systems. These systems represent a large range of pulse durations from sub-nanosecond to millisecond (conventional YAG {open_quotes}driller{close_quotes} pulse durations). Correspondingly, the peak powers range from a few kilowatts to over 1 megawatt, which dramatically affect processing times, hole quality and preservation of parent material properties. The different laser systems used to generate the data have similar beam qualities ({le}3X diffraction limited), and were selected primarily to contrast peak power effects in a nominally conventional drilling application. The results show that hole quality (taper, recast, and parent metal damage) is significantly affected by the laser pulse duration as varied in these tests. The pulse energy and repetition rate also vary between the test lasers on account of their operational designs, and the effects of these parameters must also be reckoned. However, many of the marked affects can be reasonably attributed to peak power or pulse duration uniquely, and these will be discussed in greater detail below. Depending upon the thermophysical properties of the workpiece material and the design specifications for finished parts, there is probably a pulse duration/repetition rate saddle region where specifications for hole quality and process speed are simultaneously satisfied. In drilling the GE Aircraft Engines (GEAE) N5 alloy an upper bound on the pulsewidth range of {approximately}300 nanoseconds is so identified. In this paper the authors present results and photomicrographs of these tests, and review the processing potential of {open_quotes}high-performance{close_quotes} lamp and diode pumped Nd:YAG laser devices.

  19. Geothermal pump down-hole energy regeneration system

    DOE Patents [OSTI]

    Matthews, Hugh B. (Boylston, MA)

    1982-01-01T23:59:59.000Z

    Geothermal deep well energy extraction apparatus is provided of the general kind in which solute-bearing hot water is pumped to the earth's surface from a subterranean location by utilizing thermal energy extracted from the hot water for operating a turbine motor for driving an electrical power generator at the earth 3 s surface, the solute bearing water being returned into the earth by a reinjection well. Efficiency of operation of the total system is increased by an arrangement of coaxial conduits for greatly reducing the flow of heat from the rising brine into the rising exhaust of the down-well turbine motor.

  20. A COMPILATION OF DATA ON FLUIDS FROM GEOTHERMAL RESOURCES IN THE UNITED STATES

    E-Print Network [OSTI]

    Cosner, S.R.

    2010-01-01T23:59:59.000Z

    EXCHANGERS; GEOTHERMAL ENERGY: GEOTHERMAL SPACE HEATING;Well INFORMATION OWNER-- GEOTHERMAL ENERGY AND tUNERAL CORP.ION OhNEf. -- GEOTHERMAL ENERGY AND MINERAL CORP. DRILLING

  1. Temporary Bridging Agents for use in Drilling and Completion of Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Watters, Larry; Watters, Jeff; Sutton, Joy; Combs, Kyle; Bour, Daniel; Petty, Susan; Rose, Peter; Mella, Michael

    2011-12-21T23:59:59.000Z

    CSI Technologies, in conjunction with Alta Rock Energy and the University of Utah have undergone a study investigating materials and mechanisms with potential for use in Enhanced Geothermal Systems wells as temporary diverters or lost circulation materials. Studies were also conducted with regards to particle size distribution and sealing effectiveness using a lab-scale slot testing apparatus to simulate fractures. From the slot testing a numerical correlation was developed to determine the optimal PSD for a given fracture size. Field trials conducted using materials from this study were also successful.

  2. NMAC 19.14.21 Geothermal Power Drilling Permit | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania: Energy Resources JumpNEF Advisors LLC JumpNF-Capacity up

  3. Alphine 1/Federal: Drilling report. Final report, Part 1

    SciTech Connect (OSTI)

    Witcher, J.C. [New Mexico State Univ., Las Cruces, NM (United States). Southwest Technology Development Inst.; Pisto, L. [Tonto Drilling Services, Inc., Salt Lake City, UT (United States); Hahman, W.R. [Hahman (W. Richard), Las Cruces, NM (United States); Swanberg, C.A. [Swanberg (Chandler A.), Phoenix, AZ (United States)

    1994-06-01T23:59:59.000Z

    Regional geologic and geophysical surveys, shallow temperature-gradient drilling, and published reconnaissance geothermal studies infer possible hot dry rock (HDR) geothermal resources in the Alpine-Springerville area. This report discusses the results of a State of Arizona and US Department of Energy funded drilling project designed to gather the deep temperature and stratigraphic data necessary to determine if near-term HDR geothermal potential actually exists in this portion of the White Mountains region of Arizona. A 4505 feet deep slim-hole exploratory well, Alpiner/Federal, was drilled within the Apache-Sitgreaves National Forest at Alpine Divide near the Alpine Divide Camp Ground about 5 miles north of Alpine, Arizona in Apache County (Figure 1).

  4. The Geysers Geothermal Field Update1990/2010

    E-Print Network [OSTI]

    Brophy, P.

    2012-01-01T23:59:59.000Z

    H. ,  2005.   Drilling  horizontal  wells  in  The G.M. ,  1992.   Drilling  geothermal  wells  at  The H. ,  2005.   Drilling  horizontal  wells in The Geysers.   

  5. Distributed downhole drilling network

    DOE Patents [OSTI]

    Hall, David R.; Hall, Jr., H. Tracy; Fox, Joe; Pixton, David S.

    2006-11-21T23:59:59.000Z

    A high-speed downhole network providing real-time data from downhole components of a drilling strings includes a bottom-hole node interfacing to a bottom-hole assembly located proximate the bottom end of a drill string. A top-hole node is connected proximate the top end of the drill string. One or several intermediate nodes are located along the drill string between the bottom-hole node and the top-hole node. The intermediate nodes are configured to receive and transmit data packets transmitted between the bottom-hole node and the top-hole node. A communications link, integrated into the drill string, is used to operably connect the bottom-hole node, the intermediate nodes, and the top-hole node. In selected embodiments, a personal or other computer may be connected to the top-hole node, to analyze data received from the intermediate and bottom-hole nodes.

  6. Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada.

    SciTech Connect (OSTI)

    Donald S. Sweetkind; Ronald M. Drake II

    2007-01-22T23:59:59.000Z

    Yucca Flat is a topographic and structural basin in the northeastern part of the Nevada Test Site (NTS) in Nye County, Nevada, that has been the site of numerous underground nuclear tests; many of these tests occurred within the young alluvial basin-fill deposits. The migration of radionuclides to the Paleozoic carbonate aquifer involves passage through this thick, heterogeneous section of Tertiary and Quaternary rock. An understanding of the lateral and vertical changes in the material properties of young alluvial basin-fill deposits will aid in the further development of the hydrogeologic framework and the delineation of hydrostratigraphic units and hydraulic properties required for simulating ground-water flow in the Yucca Flat area. This report by the U.S. Geological Survey, in cooperation with the U.S. Department of Energy, presents data and interpretation regarding the three-dimensional variability of the shallow alluvial aquifers in areas of testing at Yucca Flat, data that are potentially useful in the understanding of the subsurface flow system. This report includes a summary and interpretation of alluvial basin-fill stratigraphy in the Yucca Flat area based on drill hole data from 285 selected drill holes. Spatial variations in lithology and grain size of the Neogene basin-fill sediments can be established when data from numerous drill holes are considered together. Lithologic variations are related to different depositional environments within the basin including alluvial fan, channel, basin axis, and playa deposits.

  7. Development of a micro-drilling burr-control chart for PCB drilling

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    single- or double-sided). Drilling provides the holes forstandard conditions. Fig. 4. Drilling experimental setup.a standard procedure in PCB drilling). These were clamped

  8. Geothermal COMPAX drill bit development. Final technical report, July 1, 1976-September 30, 1982

    SciTech Connect (OSTI)

    Hibbs, L.E. Jr.; Sogoian, G.C.; Flom, D.G.

    1984-04-01T23:59:59.000Z

    The objective was to develop and demonstrate the performance of new drill bit designs utilizing sintered polycrystalline diamond compacts for the cutting edges. The scope included instrumented rock cutting experiments under ambient conditions and at elevated temperature and pressure, diamond compact wear and failure mode analysis, rock removal modeling, bit design and fabrication, full-scale laboratory bit testing, field tests, and performance evaluation. A model was developed relating rock cutting forces to independent variables, using a statistical test design and regression analysis. Experiments on six rock types, covering a range of compressive strengths from 8 x 10/sup 3/ psi to 51 x 10/sup 3/ psi, provided a satisfactory test of the model. Results of the single cutter experiments showed that the cutting and thrust (penetration) forces, and the angle of the resultant force, are markedly affected by rake angle, depth of cut, and speed. No unusual force excursions were detected in interrupted cutting. Wear tests on two types of diamond compacts cutting Jack Fork Sandstone yielded wear rates equivalent at high cutting speeds, where thermal effects are probably operative. At speeds below approx. 400 surface feet per minute (sfm), the coarser sintered diamond product was superior. 28 refs., 235 figs., 55 tabs.

  9. Deep drilling technology for hot crystalline rock

    SciTech Connect (OSTI)

    Rowley, J.C.

    1984-01-01T23:59:59.000Z

    The development of Hot Dry Rock (HDR) geothermal systems at the Fenton Hill, New Mexico site has required the drilling of four deep boreholes into hot, Precambrian granitic and metamorphic rocks. Thermal gradient holes, four observation wells 200 m (600 ft) deep, and an exploration core hole 800 m (2400 ft) deep guided the siting of the four deep boreholes. Results derived from the exploration core hole, GT-1 (Granite Test No. 1), were especially important in providing core from the granitic rock, and establishing the conductive thermal gradient and heat flow for the granitic basement rocks. Essential stratigraphic data and lost drilling-fluid zones were identified for the volcanic and sedimentary rocks above the contact with the crystalline basement. Using this information drilling strategies and well designs were then devised for the planning of the deeper wells. The four deep wells were drilled in pairs, the shallowest were planned and drilled to depths of 3 km in 1975 at a bottom-hole temperature of nearly 200/sup 0/C. These boreholes were followed by a pair of wells, completed in 1981, the deepest of which penetrated the Precambrian basement to a vertical depth of 4.39 km at a temperature of 320/sup 0/C.

  10. Drilling equipment to shrink

    SciTech Connect (OSTI)

    Silverman, S.

    2000-01-01T23:59:59.000Z

    Drilling systems under development will take significant costs out of the well construction process. From small coiled tubing (CT) drilling rigs for North Sea wells to microrigs for exploration wells in ultra-deepwater, development projects under way will radically cut the cost of exploratory holes. The paper describes an inexpensive offshore system, reeled systems drilling vessel, subsea drilling rig, cheap exploration drilling, laser drilling project, and high-pressure water jets.

  11. Radical improvements to blast hole drilling cost and productivity thru integrated teams

    SciTech Connect (OSTI)

    Thomas, R.W. [Baker Hughes Mining Tools, Inc., Grand Prairie, TX (United States)

    1996-12-31T23:59:59.000Z

    This paper explores the possibilities of generating radical improvements in the drilling costs and productivity of blastholes through the efforts of integrated teams as opposed to traditional customer/vendor relationships. The formation and operation of teams comprising both mine operations personnel and key vendors will be presented and explained. Further, the author will present an expanded Total Drilling Cost Formula, followed by a hypothetical example of how the formula and teams can be applied to a mining project to produce significant improvement in value and drilling/producing efficiency. The primary driving force to achieve the aforementioned benefits is the rate of production, or in drilling vernacular, the rate of penetration (ROP). For the purpose of this paper, ROP will refer to the net production rate of footage drilled, rather than the instantaneous rate of penetration achieved during the drilling process. This definition opens up an array of issues that can be addressed to improve actual production rates.

  12. Geothermal Basics

    Broader source: Energy.gov [DOE]

    Geothermal energy is thermal energy generated and stored in the Earth. Geothermal energy can manifest on the surface of the Earth, or near the surface of the Earth, where humankind may harness it to serve our energy needs. Geothermal resources are reservoirs of hot water that exist at varying temperatures and depths below the Earth's surface. Wells can be drilled into these underground reservoirs to tap steam and very hot water that can be brought to the surface for a variety of uses.

  13. Environmental Assessment: Geothermal Energy Geopressure Subprogram. Gulf Coast Well Drilling and Testing Activity (Frio, Wilcox, and Tuscaloosa Formations, Texas and Louisiana)

    SciTech Connect (OSTI)

    None

    1981-09-01T23:59:59.000Z

    The Department of Energy (DOE) has initiated a program to evaluate the feasibility of developing the geothermal-geopressured energy resources of the Louisiana-Texas Gulf Coast. As part of this effort, DOE is contracting for the drilling of design wells to define the nature and extent of the geopressure resource. At each of several sites, one deep well (4000-6400 m) will be drilled and flow tested. One or more shallow wells will also be drilled to dispose of geopressured brines. Each site will require about 2 ha (5 acres) of land. Construction and initial flow testing will take approximately one year. If initial flow testing is successful, a continuous one-year duration flow test will take place at a rate of up to 6400 m{sup 3} (40,000 bbl) per day. Extensive tests will be conducted on the physical and chemical composition of the fluids, on their temperature and flow rate, on fluid disposal techniques, and on the reliability and performance of equipment. Each project will require a maximum of three years to complete drilling, testing, and site restoration.

  14. GEOTHERMAL POWER GENERATION PLANT

    Broader source: Energy.gov (indexed) [DOE]

    confidential, or otherwise restricted information. Insert photo of your choice Drilling on the OIT campus Feb. 2009 2 | US DOE Geothermal Program eere.energy.gov * Timeline:...

  15. APPLICATION OF WATER-JET HORIZONTAL DRILLING TECHNOLOGY TO DRILL AND ACIDIZE HORIZONTAL DRAIN HOLES, TEDBIT (SAN ANDRES) FIELD, GAINES COUNTY, TEXAS

    SciTech Connect (OSTI)

    Michael W. Rose

    2005-09-22T23:59:59.000Z

    The San Andres Formation is one of the major hydrocarbon-producing units in the Permian Basin, with multiple reservoirs contained within the dolomitized subtidal portions of upward shoaling carbonate shelf cycles. The test well is located in Tedbit (San Andres) Field in northeastern Gaines County, Texas, in an area of scattered San Andres production associated with local structural highs. Selected on the basis of geological and historical data, the Oil and Gas Properties Wood No. 1 well is considered to be typical of a large number of San Andres stripper wells in the Permian Basin. Thus, successful completion of horizontal drain holes in this well would demonstrate a widely applicable enhanced recovery technology. Water-jet horizontal drilling is an emerging technology with the potential to provide significant economic benefits in marginal wells. Forecast benefits include lower recompletion costs and improved hydrocarbon recoveries. The technology utilizes water under high pressure, conveyed through small-diameter coiled tubing, to jet horizontal drain holes into producing formations. Testing of this technology was conducted with inconclusive results. Paraffin sludge and mechanical problems were encountered in the wellbore, initially preventing the water-jet tool from reaching the kick-off point. After correcting these problems and attempting to cut a casing window with the water-jet milling assembly, lateral jetting was attempted without success.

  16. Microhole Arrays Drilled With Advanced Abrasive Slurry Jet Technology...

    Open Energy Info (EERE)

    Microhole Arrays Drilled With Advanced Abrasive Slurry Jet Technology To Efficiently Exploit Enhanced Geothermal Systems Geothermal Project Jump to: navigation, search Last...

  17. Core Hole Drilling And Testing At The Lake City, California Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.pngRoofs and Heat Islands Jump|Information Dobson,Field |

  18. The 1983 Temperature Gradient and Heat Flow Drilling Project for the State of Washington

    SciTech Connect (OSTI)

    Korosec, Michael A.

    1983-11-01T23:59:59.000Z

    During the Summer of 1983, the Washington Division of Geology and Earth Resources carried out a three-hole drilling program to collect temperature gradient and heat flow information near potential geothermal resource target areas. The project was part of the state-coupled US Department of Energy Geothermal Program. Richardson Well Drilling of Tacoma, Washington was subcontracted through the State to perform the work. The general locations of the project areas are shown in figure 1. The first hole, DNR 83-1, was located within the Green River valley northwest of Mount St. Helens. This site is near the Green River Soda Springs and along the projection of the Mount St. Helens--Elk Lake seismic zone. The other two holes were drilled near Mount Baker. Hole DNR 83-3 was sited about 1/4 km west of the Baker Hot Springs, 10.5 km east of Mount Baker, while hole DNR 83-5 was located along Rocky Creek in the Sulphur Creek Valley. The Rocky Creek hole is about 10 km south-southwest of the peak. Two other holes, DNR 83-2 and DNR 83-4, were located on the north side of the Sulphur Creek Valley. Both holes were abandoned at early stages of drilling because of deep overburden and severe caving problems. The sites were apparently located atop old landslide deposits.

  19. Temporary Bridging Agents for Use in Drilling and Completions...

    Broader source: Energy.gov (indexed) [DOE]

    Temporary Bridging Agents for Use in Drilling and Completions of EGS Temporary Bridging Agents for Use in Drilling and Completions of EGS DOE Geothermal Peer Review 2010 -...

  20. Geologic Map and Cross Sections of the McGinness Hills Geothermal Area - GIS Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    Geologic map data in shapefile format that includes faults, unit contacts, unit polygons, attitudes of strata and faults, and surficial geothermal features. 5 cross?sections in Adobe Illustrator format. Comprehensive catalogue of drill?hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. 3D model constructed with EarthVision using geologic map data, cross?sections, drill?hole data, and geophysics.

  1. Geologic Map and Cross Sections of the McGinness Hills Geothermal Area - GIS Data

    SciTech Connect (OSTI)

    Faulds, James E.

    2013-12-31T23:59:59.000Z

    Geologic map data in shapefile format that includes faults, unit contacts, unit polygons, attitudes of strata and faults, and surficial geothermal features. 5 cross?sections in Adobe Illustrator format. Comprehensive catalogue of drill?hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. 3D model constructed with EarthVision using geologic map data, cross?sections, drill?hole data, and geophysics.

  2. Drill pipe corrosion control using an inert drilling fluid

    SciTech Connect (OSTI)

    Caskey, B.C.; Copass, K.S.

    1981-01-01T23:59:59.000Z

    The results of a geothermal drill pipe corrosion field test are presented. When a low-density drilling fluid was required for drilling a geothermal well because of an underpressured, fractured formation, two drilling fluids were alternately used to compare drill pipe corrosion rates. The first fluid was an air-water mist with corrosion control chemicals. The other fluid was a nitrogen-water mist without added chemicals. The test was conducted during November 1980 at the Baca Location in northern New Mexico. Data from corrosion rings, corrosion probes, fluid samples and flow line instrumentation are plotted for the ten day test period. It is shown that the inert drilling fluid, nitrogen, reduced corrosion rates by more than an order of magnitude. Test setup and procedures are also discussed. Development of an onsite inert gas generator could reduce the cost of drilling geothermal wells by extending drill pipe life and reducing corrosion control chemical costs.

  3. GEOTHERMAL EXPLORATION OF NEWBERRY VOLCANO, OREGON

    SciTech Connect (OSTI)

    Waibel, Albert F [Columbia Geoscience; Frone, Zachary S [Southern Methodist University; Blackwell, David D [Southern Methodist University

    2014-12-01T23:59:59.000Z

    Davenport Newberry (Davenport) has completed 8 years of exploration for geothermal energy on Newberry Volcano in central Oregon. Two deep exploration test wells were drilled by Davenport on the west flank of the volcano, one intersected a hydrothermal system; the other intersected isolated fractures with no hydrothermal interconnection. Both holes have bottom-hole temperatures near or above 315°C (600°F). Subsequent to deep test drilling an expanded exploration and evaluation program was initiated. These efforts have included reprocessing existing data, executing multiple geological, geophysical, geochemical programs, deep exploration test well drilling and shallow well drilling. The efforts over the last three years have been made possible through a DOE Innovative Exploration Technology (IET) Grant 109, designed to facilitate innovative geothermal exploration techniques. The combined results of the last 8 years have led to a better understanding of the history and complexity of Newberry Volcano and improved the design and interpretation of geophysical exploration techniques with regard to blind geothermal resources in volcanic terrain.

  4. A COMPILATION OF DATA ON FLUIDS FROM GEOTHERMAL RESOURCES IN THE UNITED STATES

    E-Print Network [OSTI]

    Cosner, S.R.

    2010-01-01T23:59:59.000Z

    P. DESCRIPTCRS- GEOTHERMAL WELLS; DRILLING; VALLES CALDERA19641. SAL TGN SE A KGRA; WELL DRILLING. REFERENCE- CHEMICALWELLS: NATURAL STEAM; WELL DRILLING: DATA; CALIFORNIA. /!.

  5. A COMPILATION OF DATA ON FLUIDS FROM GEOTHERMAL RESOURCES IN THE UNITED STATES

    E-Print Network [OSTI]

    Cosner, S.R.

    2010-01-01T23:59:59.000Z

    19641. SAL TGN SE A KGRA; WELL DRILLING. REFERENCE- CHEMICALWELLS: NATURAL STEAM; WELL DRILLING: DATA; CALIFORNIA. /!.GEOTHERMAL FIELO; WEll DRILLING. RESERVGIR. ENGINEER-lNG;

  6. Technology Development and Field Trials of EGS Drilling Systems

    Broader source: Energy.gov [DOE]

    Project objective: Development of drilling systems based upon rock penetration technologies not commonly employed in the geothermal industry.

  7. Pumpernickel Valley Geothermal Project Thermal Gradient Wells

    SciTech Connect (OSTI)

    Z. Adam Szybinski

    2006-01-01T23:59:59.000Z

    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

  8. MEMS Materials and Temperature Sensors for Down Hole Geothermal System Monitoring

    E-Print Network [OSTI]

    Wodin-Schwartz, Sarah

    2013-01-01T23:59:59.000Z

    models will help reduce exploration costs, which is a large percentage of geothermal electric power generation system

  9. Geothermal heating

    SciTech Connect (OSTI)

    Aureille, M.

    1982-01-01T23:59:59.000Z

    The aim of the study is to demonstrate the viability of geothermal heating projects in energy and economic terms and to provide nomograms from which an initial estimate may be made without having to use data-processing facilities. The effect of flow rate and temperature of the geothermal water on drilling and on the network, and the effect of climate on the type of housing are considered.

  10. Idaho Geological Survey and University of Idaho Explore for Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    to offering insight into the region's geothermal energy potential. A key part of the drilling project's success has been the ongoing geothermal data compilation effort for the...

  11. Sandia National Laboratories: percussive drilling with compressed...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    percussive drilling with compressed air Sandia and Atlas-Copco Secoroc Advance to Phase 2 in Their Geothermal Energy Project On July 31, 2013, in Energy, Geothermal, News, News &...

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

    SciTech Connect (OSTI)

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

    1996-01-24T23:59:59.000Z

    The Tatapani Geothermal field, located on the Son-Narmada mega lineament is one of the most intense geothermal manifestation, with hot spring temperature of 98°c. 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 110°c in upper 350 m of geothermal system and their possible continuation to deeper reservoir of anticipated temperature of 160 ± 10°c. 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 112.5°c 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.

  13. Ultrasonic drilling apparatus

    DOE Patents [OSTI]

    Duran, E.L.; Lundin, R.L.

    1988-06-20T23:59:59.000Z

    Apparatus attachable to an ultrasonic drilling machine for drilling deep holes in very hard materials, such as boron carbide, is provided. The apparatus utilizes a hollow spindle attached to the output horn of the ultrasonic drilling machine. The spindle has a hollow drill bit attached at the opposite end. A housing surrounds the spindle, forming a cavity for holding slurry. In operation, slurry is provided into the housing, and into the spindle through inlets while the spindle is rotating and ultrasonically reciprocating. Slurry flows through the spindle and through the hollow drill bit to cleanse the cutting edge of the bit during a drilling operation. 3 figs.

  14. Ultrasonic drilling apparatus

    DOE Patents [OSTI]

    Duran, Edward L. (Santa Fe, NM); Lundin, Ralph L. (Los Alamos, NM)

    1989-01-01T23:59:59.000Z

    Apparatus attachable to an ultrasonic drilling machine for drilling deep holes in very hard materials, such as boron carbide, is provided. The apparatus utilizes a hollow spindle attached to the output horn of the ultrasonic drilling machine. The spindle has a hollow drill bit attached at the opposite end. A housing surrounds the spindle, forming a cavity for holding slurry. In operation, slurry is provided into the housing, and into the spindle through inlets while the spindle is rotating and ultrasonically reciprocating. Slurry flows through the spindle and through the hollow drill bit to cleanse the cutting edge of the bit during a drilling operation.

  15. Geothermal Direct Use Engineering and Design Guidebook - Chapter...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Book Section: Geothermal Direct Use Engineering and Design Guidebook - Chapter 6 - Drilling and Well Construction Abstract Drilling...

  16. Driltac (Drilling Time and Cost Evaluation)

    SciTech Connect (OSTI)

    None

    1986-08-01T23:59:59.000Z

    The users manual for the drill tech model for estimating the costs of geothermal wells. The report indicates lots of technical and cost detail. [DJE-2005

  17. High Temperature Tools and Sensors, Down-hole Pumps and Drilling |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e p p a a r r t t m m e e n nDepartment

  18. U.S. Average Depth of Dry Holes Exploratory Wells Drilled (Feet per Well)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease Separation,ProductionMarketed18,736RevisionExploratory Wells Drilled

  19. ESMERALDA ENERGY COMPANY FINAL SCIENTIFIC TECHNICAL REPORT, January 2008, EMIGRANT SLIMHOLE DRILLING PROJECT, DOE GRED III (DE-FC36-04GO14339)

    SciTech Connect (OSTI)

    John Deymonaz, Jeffrey G. Hulen, Gregory D. Nash, Alex Schriener

    2008-01-22T23:59:59.000Z

    The Emigrant Slimhole Drilling Project (“ESDP”) was a highly successful, phased resource evaluation program designed to evaluate the commercial geothermal potential of the eastern margin of the northern Fish Lake Valley pull-apart basin in west-central Nevada. The program involved three phases: (1) Resource evaluation; (2) Drilling and resource characterization; and (3) Resource testing and assessment. Efforts included detailed geologic mapping; 3-D modeling; compilation of a GIS database; and production of a conceptual geologic model followed by the successful drilling of the 2,938 foot deep 17-31 slimhole (core hole), which encountered commercial geothermal temperatures (327? F) and exhibits an increasing, conductive, temperature gradient to total depth; completion of a short injection test; and compilation of a detailed geologic core log and revised geologic cross-sections. Results of the project greatly increased the understanding of the geologic model controlling the Emigrant geothermal resource. Information gained from the 17-31 core hole revealed the existence of commercial temperatures beneath the area in the Silver Peak Core Complex which is composed of formations that exhibit excellent reservoir characteristics. Knowledge gained from the ESDP may lead to the development of a new commercial geothermal field in Nevada. Completion of the 17-31 core hole also demonstrated the cost-effectiveness of deep core drilling as an exploration tool and the unequaled value of core in understanding the geology, mineralogy, evolutional history and structural aspects of a geothermal resource.

  20. Exploration ofr geothermal resources in Dixie Valley, Nevada

    SciTech Connect (OSTI)

    Parchman, W.L.; Knox, J.W.

    1981-06-01T23:59:59.000Z

    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)

  1. Directional Drilling and Equipment for Hot Granite Wells

    SciTech Connect (OSTI)

    Williams, R. E.; Neudecker, J. W.; Rowley, J.C.; Brittenham, T. L.

    1981-01-01T23:59:59.000Z

    Directional drilling technology was extended and modified to drill the first well of a subsurface geothermal energy extraction system at the Fenton Hill, New Mexico, hot dry rock (HDR) experimental site. Borehole geometries, extremely hard and abrasive granite rock, and high formation temperatures combined to provide a challenging environment for directional drilling tools and instrumentation. Completing the first of the two-wellbore HDR system resulted in the definition of operation limitations of -many conventional directional drilling tools, instrumentation, and techniques. The successful completion of the first wellbore, Energy Extraction Well No. 2 (EE-21), to a measured depth of 4.7 km (15,300 ft) in granite reservoir rock with a bottomhole temperature of 320 C (610 F) required the development of a new high-temperature downhole motor and modification of existing wireline-conveyed steering tool systems. Conventional rotary-driven directional assemblies were successfully modified to accommodate the very hard and abrasive rock encountered while drilling nearly 2.6 km (8,500 ft) of directional hole to a final inclination of 35{sup o} from the vertical at the controlled azimuthal orientation. Data were collected to optimize the drilling procedures far the programmed directional drilling of well EE-3 parallel to, and 370 metres (1,200 ft) above, Drilling equipment and techniques used in drilling wellbores for extraction of geothermal energy from hot granite were generally similar to those that are standard and common to hydrocarbon drilling practices. However, it was necessary to design some new equipment for this program: some equipment was modified especially for this program and some was operated beyond normal ratings. These tools and procedures met with various degrees of success. Two types of shock subs were developed and tested during this project. However, downhole time was limited, and formations were so varied that analysis of the capabilities of these items is not conclusive. Temperature limits of the tools were exceeded. EE-2. Commercial drilling and fishing jars were improved during the drilling program. Three-cone, tungsten-carbide insert bit performance with downhole motors was limited by rapid gauge wear. Rotary drilling was optimized for wells EE-2 and EE-3 using softer (IADS 635 code) bits and provided a balance between gauge,. cutting structure, and bearing life. Problems of extreme drill string drag, drill string twist-off, and corrosion control are discussed.

  2. Method of deep drilling

    DOE Patents [OSTI]

    Colgate, Stirling A. (4616 Ridgeway, Los Alamos, NM 87544)

    1984-01-01T23:59:59.000Z

    Deep drilling is facilitated by the following steps practiced separately or in any combination: (1) Periodically and sequentially fracturing zones adjacent the bottom of the bore hole with a thixotropic fastsetting fluid that is accepted into the fracture to overstress the zone, such fracturing and injection being periodic as a function of the progression of the drill. (2) Casing the bore hole with ductile, pre-annealed casing sections, each of which is run down through the previously set casing and swaged in situ to a diameter large enough to allow the next section to run down through it. (3) Drilling the bore hole using a drill string of a low density alloy and a high density drilling mud so that the drill string is partially floated.

  3. Geothermal reservoir assessment case study: Northern Dixie Valley, Nevada

    SciTech Connect (OSTI)

    Denton, J.M.; Bell, E.J.; Jodry, R.L.

    1980-11-01T23:59:59.000Z

    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.

  4. Geothermal energy abstract sets. Special report No. 14

    SciTech Connect (OSTI)

    Stone, C. (comp.)

    1985-01-01T23:59:59.000Z

    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)

  5. OM300 Direction Drilling Module

    SciTech Connect (OSTI)

    MacGugan, Doug

    2013-08-22T23:59:59.000Z

    OM300 – Geothermal Direction Drilling Navigation Tool: Design and produce a prototype directional drilling navigation tool capable of high temperature operation in geothermal drilling Accuracies of 0.1° Inclination and Tool Face, 0.5° Azimuth Environmental Ruggedness typical of existing oil/gas drilling Multiple Selectable Sensor Ranges High accuracy for navigation, low bandwidth High G-range & bandwidth for Stick-Slip and Chirp detection Selectable serial data communications Reduce cost of drilling in high temperature Geothermal reservoirs Innovative aspects of project Honeywell MEMS* Vibrating Beam Accelerometers (VBA) APS Flux-gate Magnetometers Honeywell Silicon-On-Insulator (SOI) High-temperature electronics Rugged High-temperature capable package and assembly process

  6. Exotic drilling: contractor drills pipelines

    SciTech Connect (OSTI)

    McReynolds, L.

    1980-04-01T23:59:59.000Z

    Drilling of pipelines has been technologically developed for applications such as river crossings, tunnelling through tar-sand or oil-shale strata for more effective in situ combustion production projects, and drilling inside rather than through heavy oil pays to create extensive horizontal well bores suitable for steam heating the formation. The horizontal drilling concept for river crossing involves installation of pipelines in an inverted arc 25 to 100 ft below a river bed. The directional control required to produce a curved hole is maintained by rotating the bit without rotating the pipe. When the drill string is activated by a forward thrust, it creates a reactive subsurface pressure against the front surface of the bent sub, thus causing the bend. The bit then deviates in the direction of the bend. Little disruption of the environment occurs, and the directionally drilled crossings offer improved pipeline security, maintenance of year-round construction schedules, easier permitting, no navigational hazards or interruption for waterway traffic, elimination of bank restoration costs and most repair costs, and a maintenance-free crossing section.

  7. Computation modeling of drill bits : a new method for reproducing bottom hole geometry and a second-order explicit integrator via composition for coupled rotating rigid bodies

    E-Print Network [OSTI]

    Endres, Lanson Adam

    2007-01-01T23:59:59.000Z

    rotary drilling. A method of drilling wells where the bit isin drilling to remove cuttings from a borehole as well asDrilling System The bit is just one part of a complex system required to drill a well.

  8. Geological interpretation of Mount Ciremai geothermal system from remote sensing and magneto-teluric analysis

    E-Print Network [OSTI]

    Sumintadireja, Prihadi; Irawan, Dasapta E; Irawan, Diky; Fadillah, Ahmad

    2015-01-01T23:59:59.000Z

    The exploration of geothermal system at Mount Ciremai has been started since the early 1980s and has just been studied carefully since the early 2000s. Previous studies have detected the potential of geothermal system and also the groundwater mechanism feeding the system. This paper will discuss the geothermal exploration based on regional scale surface temperature analysis with Landsat image to have a more detail interpretation of the geological setting and magneto-telluric or MT survey at prospect zones, which identified by the previous method, to have a more exact and in depth local scale structural interpretation. Both methods are directed to pin point appropriate locations for geothermal pilot hole drilling and testing. We used four scenes of Landsat Enhanced Thematic Mapper or ETM+ data to estimate the surface manifestation of a geothermal system. Temporal analysis of Land Surface Temperature or LST was applied and coupled with field temperature measurement at seven locations. By combining the TTM with ...

  9. Chemical logging of geothermal wells

    DOE Patents [OSTI]

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

    1981-01-01T23:59:59.000Z

    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.

  10. Heat flow and geothermal studies in the state of Washington

    SciTech Connect (OSTI)

    Blackwell, D.D.; Steele, J.L.; Kelley, S.A.

    1985-08-01T23:59:59.000Z

    Existing geothermal gradient and heat flow data for the state of Washington are summarized. In addition, information on mean-annual ground surface temperatures is included. The data consist of accurate, detailed temperature-depth measurements in selected available holes throughout the state of Washington made between 1979 and 1982. Measurements of thermal conductivity on selected rock samples from these drill holes and ancillary information required to assess the significance of the data and calculate heat flow values were obtained as well. Information is presented on the mean-annual ground-surface temperatures throughout the state of Washington. 32 refs., 15 figs., 4 tabs.

  11. Advanced drilling systems study.

    SciTech Connect (OSTI)

    Pierce, Kenneth G.; Livesay, Billy Joe; Finger, John Travis (Livesay Consultants, Encintas, CA)

    1996-05-01T23:59:59.000Z

    This report documents the results of a study of advanced drilling concepts conducted jointly for the Natural Gas Technology Branch and the Geothermal Division of the U.S. Department of Energy. A number of alternative rock cutting concepts and drilling systems are examined. The systems cover the range from current technology, through ongoing efforts in drilling research, to highly speculative concepts. Cutting mechanisms that induce stress mechanically, hydraulically, and thermally are included. All functions necessary to drill and case a well are considered. Capital and operating costs are estimated and performance requirements, based on comparisons of the costs for alternative systems to conventional drilling technology, are developed. A number of problems common to several alternatives and to current technology are identified and discussed.

  12. Washington: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Bloomquist, R.G.; Basescu, N.; Higbee, C.; Justus, D.; Simpson, S.

    1980-06-01T23:59:59.000Z

    Washington's geothermal potential is discussed. The following topics are covered: exploration, drilling, utilization, legal and institutional setting, and economic factors of direct use projects. (MHR)

  13. Alaska: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Basescu, N.; Bloomquist, R.G.; Higbee, C.; Justus, D.; Simpson, S.

    1980-06-01T23:59:59.000Z

    Alaska's geothermal potential, exploration, drilling, utilization, and legal and institutional setting are covered. Economic factors of direct use projects are discussed. (MHR)

  14. Oregon: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Justus, D.; Basescu, N.; Bloomquist, R.G.; Higbee, C.; Simpson, S.

    1980-06-01T23:59:59.000Z

    Oregon's geothermal potential, exploration, drilling, utilization, legal and institutional setting are covered. Economic factors of direct use projects are discussed. (MHR)

  15. Proposed scientific activities for the Salton Sea Scientific Drilling Project

    SciTech Connect (OSTI)

    Not Available

    1984-05-01T23:59:59.000Z

    The Salton Sea Scientific Drilling Project (SSSDP) has been organized for the purpose of investigating a hydrothermal system at depths and temperatures greater than has been done before. Plans are to deepen an existing well or to drill a new well for research purposes for which temperatures of 300/sup 0/C will be reached at a depth of less than 3.7 km and then deepen that well a further 1.8 km. This report recounts the Congressional history of the appropriation to drill the hole and other history through March 1984, gives a review of the literature on the Salton Sea Geothermal Field and its relationship to other geothermal systems of the Salton Trough, and describes a comprehensive series of investigations that have been proposed either in the well or in conjunction with the SSSDP. Investigations in geophysics, geochemistry and petrology, tectonics and rock mechanics, and geohydrology are given. A tabulation is given of current commercial and state-of-the-art downhole tools and their pressure, temperature, and minimum hole size limitations.

  16. Livingston Campus Geothermal Project The Project

    E-Print Network [OSTI]

    Delgado, Mauricio

    Livingston Campus Geothermal Project The Project: Geothermal power is a cost effective, reliable is a Closed Loop Geothermal System involving the removal and storage of approximately four feet of dirt from the entire Geothermal Field and the boring of 321 vertical holes reaching a depth of 500 feet. These holes

  17. Recent Drilling Activities At The Earth Power Resources Tuscarora...

    Open Energy Info (EERE)

    Drilling Activities At The Earth Power Resources Tuscarora Geothermal Power Project'S Hot Sulphur Springs Lease Area Jump to: navigation, search OpenEI Reference LibraryAdd to...

  18. OCEAN DRILLING PROGRAM LEG 118 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 118 SCIENTIFIC PROSPECTUS FRACTURE ZONE DRILLING ON THE SOUTHWEST INDIAN Oceanographic Institution Woods Hole, MA 02543 Andrew C. Adamson Staff Scientist, Leg 118 Ocean Drilling Program the written consent of the Director, Ocean Drilling Program, Texas A&M University Research Park, 1000

  19. Drilling and thermal gradient measurements at US Marine Corps Air Ground Combat Center, Twentynine Palms, California. Final report, October 1, 1983-March 31, 1984

    SciTech Connect (OSTI)

    Trexler, D.T.; Flynn, T.; Ghusn, G. Jr.

    1984-01-01T23:59:59.000Z

    Seven temperature gradient holes were drilled at the Marine Corps Air Ground Combat Center, Twentynine Palms, California, as part of a cooperative research and development program, jointly funded by the Navy and Department of Energy. The purpose of this program was to assess geothermal resources at selected Department of Defense installations. Drill site selection was based on geophysical anomalies delineated by combined gravity, ground magnetic and aeromagnetic surveys. Temperature gradients ranged from 1.3/sup 0/C/100 m (1/sup 0/F/100 ft.) in hole No. 1 to 15.3/sup 0/C/100 m (8.3/sup 0/F/100 ft.) in temperature gradient hole No. 6. Large, positive geothermal gradients in temperature gradient holes 5 and 6, combined with respective bottom hole temperatures of 51.6/sup 0/C (125/sup 0/F) and 67/sup 0/C (153/sup 0/F), indicate that an extensive, moderate-temperature geothermal resource is located on the MCAGCC. The geothermal reservoir appears to be situated in old, unconsolidated alluvial material and is structurally bounded on the east by the Mesquite Lake fault and on the west by the Surprise Spring fault. If measured temperature gradients continue to increase at the observed rate, temperatures in excess of 80/sup 0/C (178/sup 0/F) can be expected at a depth of 2000 feet.

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio: EnergyProjects/Search

  1. Application of a New Structural Model & Exploration Technologies to Define a Blind Geothermal System: A Viable Alternative to Grid Drilling for Geothermal Exploration: McCoy, Churchill County, NV

    Broader source: Energy.gov [DOE]

    DOE Geothermal Technologies Peer Review 2010 - Presentation. Relevance of research: Improve exploration technologies for range-hosted geothermal systems:Employ new concept models and apply existing methods in new ways; Breaking geothermal exploration tasks into new steps, segmenting the problem differently; Testing new models for dilatent structures; Utilizing shallow thermal aquifer model to focus exploration; Refining electrical interpretation methods to map shallow conductive featuresIdentifying key faults as fluid conduits; and Employ soil gas surveys to detect volatile elements and gases common to geothermal systems.

  2. Geothermal low-temperature reservoir assessment in Dona Ana County, New Mexico. Final report

    SciTech Connect (OSTI)

    Icerman, L.; Lohse, R.L.

    1983-04-01T23:59:59.000Z

    Sixty-four shallow temperature gradient holes were drilled on the Mesilla Valley East Mesa (east of Interstate Highways 10 and 25), stretching from US Highway 70 north of Las Cruces to NM Highway 404 adjacent to Anthony, New Mexico. Using these data as part of the site selection process, Chaffee Geothermal, Ltd. of Denver, Colorado, drilled two low-temperature geothermal production wells to the immediate north and south of Tortugas Mountain and encountered a significant low-temperature reservoir, with a temperature of about 150{sup 0}F and flow rates of 750 to 1500 gallons per minute at depths from 650 to 1250 feet. These joint exploration activities resulted in the discovery and confirmation of a 30-square-mile low-temperature geothermal anomaly just a few miles to the east of Las Cruces that has been newly named as the Las Cruces east Mesa Geothermal Field. Elevated temperature and heat flow data suggest that the thermal anomaly is fault controlled and extends southward to the Texas border covering a 100-square-mile area. With the exception of some localized perturbations, the anomaly appears to decrease in temperature from the north to the south. Deeper drilling is required in the southern part of the anomaly to confirm the existence of commercially-exploitable geothermal waters.

  3. Formation damage studies of lubricants used with drill-in fluids systems on horizontal open-hole wells

    E-Print Network [OSTI]

    Gutierrez, Fernando A

    2000-01-01T23:59:59.000Z

    of variables including drill solids content (2%-6%), hydrochloric acid concentration (2%-10%), and temperature (110°F-160°F) were changed during the testing procedure. A matrix design was used to determine the behavior in regain permeability and break through...

  4. Workshop on geothermal drilling fluids

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    Thirteen papers and abstracts are included. Seven papers were abstracted and six abstracts were listed by title. (MHR)

  5. Monitoring temperature conditions in recently drilled nonproductive industry boreholes in Oklahoma

    SciTech Connect (OSTI)

    Harrison, W.E.; Luza, K.V.

    1985-06-01T23:59:59.000Z

    Temperature conditions were monitored in seven industry petroleum-test wells (called holes-of-opportunity in this report) that were drilled in central and eastern Oklahoma. Five of these wells provided useful temperature information, and two wells were used to determine the length of time needed for the borehole-fluid temperature to achieve thermal equilibrium with the formation rocks. Four wells were used to verify the validity of a geothermal-gradient map of Oklahoma. Temperature surveys in two wells indicated a gradient lower than the predicted gradients on the geothermal-gradient map. When deep temperature data, between 5000 and 13,000 feet, are adjusted for mud-circulation effects, the adjusted gradients approximate the gradients on the geothermal-gradient map. The temperature-confirmation program appears to substantiate the geographic distribution of the high- and low-thermal-gradient regimes in Oklahoma. 13 refs., 18 figs., 7 tabs.

  6. Gamma Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    of core holes were drilled from 1984 to 1988 as a part of the Continental Scientific Drilling Program (CSDP) to better understand the stratigraphy, structure, hydrothermal...

  7. Slim Holes At Flint Geothermal Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |RippeyInformation Slim Holes Activity Date

  8. Slim Holes At International Geothermal Area, Japan (Combs, Et Al., 1999) |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |RippeyInformation Slim Holes ActivityNotes 2Open Energy

  9. Geothermal progress monitor. Progress report No. 7

    SciTech Connect (OSTI)

    Not Available

    1983-04-01T23:59:59.000Z

    A state-by-state review of major geothermal-development activities during 1982 is presented. It also inlcudes a summary of recent drilling and exploration efforts and the results of the 1982 leasing program. Two complementary sections feature an update of geothermal direct-use applications and a site-by-site summary of US geothermal electric-power development.

  10. Template:GeothermalResourceArea | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <Maintained ByManagement IncDrill HoleGeothermalResourceArea Jump to:

  11. Journal of Volcanology and Geothermal Research 65 ( 1995 ) 119-133 The Hengill geothermal area, Iceland: Variation of temperature

    E-Print Network [OSTI]

    Foulger, G. R.

    Journal of Volcanology and Geothermal Research 65 ( 1995 ) 119-133 The Hengill geothermal area. These conditions are approached at the Hengill geothermal area, S. Iceland, a dominantly basaltic area. The likely measurements from four drill sites within the area indicate average, near-surface geothermal gradients of up

  12. Oregon: a guide to geothermal energy development. [Includes glossary

    SciTech Connect (OSTI)

    Justus, D.; Basescu, N.; Bloomquist, R.G.; Higbee, C.; Simpson, S.

    1980-06-01T23:59:59.000Z

    The following subjects are covered: Oregons' geothermal potential, exploration methods and costs, drilling, utilization methods, economic factors of direct use projects, and legal and institutional setting. (MHR)

  13. Exploratory Well At Long Valley Caldera Geothermal Area (Sorey...

    Open Energy Info (EERE)

    395. Notes Among these wells were exploration and monitoring wells drilled near the Fish Hatchery Springs in preparation for the siting of a second binary geothermal power...

  14. Finding Large Aperture Fractures in Geothermal Resource Areas...

    Broader source: Energy.gov (indexed) [DOE]

    Seismic Survey DOE Geothermal Peer Review 2010 - Presentation. Project summary: Drilling into large aperture open fractures (LAFs) typically yield production wells with...

  15. Making Buildings Better: Indie Energy & the Geothermal Breakthrough...

    Broader source: Energy.gov (indexed) [DOE]

    Strategist, Office of Public Affairs How does it work? By combining innovative drilling methods and the cost-effective, user-friendly Smart Geothermal Network, Indie Energy...

  16. U.S. and Australian Advanced Geothermal Projects Face Setbacks...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of hot water embedded in hot rock or expanding an existing geothermal reservoir. But drilling into hard rock at high temperatures and pressures has always presented a technical...

  17. An Updated Conceptual Model Of The Travale Geothermal Field Based...

    Open Energy Info (EERE)

    Conceptual Model Of The Travale Geothermal Field Based On Recent Geophysical And Drilling Data Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal...

  18. A Resource Conceptual Model for the Ngatamariki Geothermal Field...

    Open Energy Info (EERE)

    Conceptual Model for the Ngatamariki Geothermal Field Based on Recent Exploration Well Drilling and 3D MT Resistivity Imaging Jump to: navigation, search OpenEI Reference...

  19. A History of Geothermal Energy Research and Development in the...

    Broader source: Energy.gov (indexed) [DOE]

    geothermalhistory3engineering.pdf More Documents & Publications A History or Geothermal Energy Research and Development in the United States: Drilling 1976-2006...

  20. Geothermal: Sponsored by OSTI -- ESMERALDA ENERGY COMPANY FINAL...

    Office of Scientific and Technical Information (OSTI)

    ESMERALDA ENERGY COMPANY FINAL SCIENTIFIC TECHNICAL REPORT, January 2008, EMIGRANT SLIMHOLE DRILLING PROJECT, DOE GRED III (DE-FC36-04GO14339) Geothermal Technologies Legacy...

  1. Microseismicity and 3-D Mapping of an Active Geothermal Field...

    Open Energy Info (EERE)

    during drilling. Authors Catherine Lewis Kenedi, Eylon Shalev, Alan Lucas and Peter Malin Conference Proceedings World Geothermal Congress 2010; Bali, Indonesia; 042010 Published...

  2. U.S. Department of Energy, Geothermal Program Review VII, Critique of the Geothermal Exploration R&D Program

    SciTech Connect (OSTI)

    Koenig, James B.

    1989-03-21T23:59:59.000Z

    Exploration can be described as consisting of two components: finding something worth drilling and testing; and defining and constraining that system after it has been drilled and tested. To date, geothermal exploration in the United States has concentrated on the drilling and testing of rather obvious targets--places where steam and boiling water issue from the ground. Relatively little has been done in the exploration of concealed or blind systems, probably because there have been so many obvious targets. However, these largely have been drilled, tested and constrained by boundaries, and almost entirely are committed to development schemes. The need now is to develop an exploration methodology for the '90s and thereafter that will be effective in the search for blind geothermal systems. Such work is being done currently in Japan; my company was privileged to have served the New Energy Development Organization and the Electric Power Development Company, both Japanese government companies, in the design of a methodology to assess concealed heat sources in 4 different terrains: recent volcanic with abundant thermal manifestations; volcanic outflow; volcanic or non-volcanic with few surface manifestations; and non-volcanic with background-level heat flow. work was based on the application of existing exploration techniques. The Japanese agencies now are attempting to develop new techniques specifically for the task of applying the methodology. Two important observations can be made about this quest for a methodology to explore (and find) concealed geothermal systems: First, most geothermal systems are dominated by ground-water hydrology; and very little is done to systematically investigate or define the effects of hydrology. The Cascade ''rain curtain'' is an example of the importance of hydrologic effects in geothermal exploration. We at GeothermEx first encountered this effect in 1975-76, when we drilled a 2,000-foot-deep hole west of Klamath Lake for Weyerhauser Company. Very little has been done since then to utilize the knowledge of this ''rain curtain'' in exploration in the Cascades or elsewhere.

  3. Geothermal program overview: Fiscal years 1993--1994

    SciTech Connect (OSTI)

    NONE

    1995-11-01T23:59:59.000Z

    The DOE Geothermal Energy Program is involved in three main areas of research: finding and tapping the resource; power generation; and direct use of geothermal energy. This publication summarizes research accomplishments for FY 1993 and 1994 for the following: geophysical and geochemical technologies; slimhole drilling for exploration; resource assessment; lost circulation control; rock penetration mechanics; instrumentation; Geothermal Drilling Organization; reservoir analysis; brine injection; hot dry rock; The Geysers; Geothermal Technology Organization; heat cycle research; advanced heat rejection; materials development; and advanced brine chemistry.

  4. Directional drilling equipment and techniques for deep hot granite wells

    SciTech Connect (OSTI)

    Brittenham, T.L.; Sursen, G.; Neudecker, J.W.; Rowley, J.C.; Williams, R.E.

    1980-01-01T23:59:59.000Z

    Conventional directional drilling technology has been extended and modified to drill the first well of a subsurface geothermal energy extraction system at the Fenton Hill, New Mexico, Hot dry Rock (HDR) experimental site. Completing the first of a two-wellbore HDR system has resulted in the definition of operational limitations of many conventional directional drilling tools, instrumentation and techniques. The successful completion of the first wellbore, Energy Extraction Well No. 2 (EE-2), to a measured depth of 15,300 ft (4.7 km) in granite reservoir rock with a bottomhole temperature of 530/sup 0/F (275/sup 0/C) required the development of a new high temperature downhole motor and modification of existing wireline-conveyed steering tool systems. Conventional rotary-driven directional assemblies were successfully modified to accommodate the very hard and abrasive rock encountered while drilling nearly 8500 ft (2.6 km) of directional hole to a final inclination of 35/sup 0/ from the vertical at a controlled azimuthal orientation.

  5. OCEAN DRILLING PROGRAM LEG 140 PRELIMINARY REPORT

    E-Print Network [OSTI]

    OCEAN DRILLING PROGRAM LEG 140 PRELIMINARY REPORT HOLE 504B Dr. Henry Dick Dr. Jörg Erzinger Co Giessen Federal Republic of Germany Dr. Laura Stokking Staff Scientist, Leg 140 Ocean Drilling Program Copies of this publication may be obtained from the Director, Ocean Drilling Program, Texas A

  6. Sweet lake geopressured-geothermal project, Magma Gulf-Technadril/DOE Amoco Fee. Annual report, December 1, 1979-February 27, 1981. Volume I. Drilling and completion test well and disposal well

    SciTech Connect (OSTI)

    Rodgers, R.W. (ed.)

    1982-06-01T23:59:59.000Z

    The Sweet lake site is located approximately 15 miles southeast of Lake Charles in Cameron Parish, Louisiana. A geological study showed that the major structure in this area is a graben. The dip of the beds is northwesterly into the basin. A well drilled into the deep basin would find the target sand below 18,000', at high pressures and temperatures. However, since there is no well control in the basin, the specific site was chosen on the 15,000' contour of the target sand in the eastern, more narrow part of the garben. Those key control wells are present within one mile of the test well. The information acquired by drilling the test well confirmed the earlier geologic study. The target sand was reached at 15,065', had a porosity of over 20% and a permeability to water of 300 md. The original reservoir pressure was 12,060 psi and the bottom hole temperature 299{sup 0}F. There are approximately 250 net feet of sand available for the perforation. The disposal well was drilled to a total depth of 7440'.

  7. Proposed Drill Sites

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Proposed drill sites for intermediate depth temperature gradient holes and/or deep resource confirmation wells. Temperature gradient contours based on shallow TG program and faults interpreted from seismic reflection survey are shown, as are two faults interpreted by seismic contractor Optim but not by Oski Energy, LLC.

  8. Proposed Drill Sites

    SciTech Connect (OSTI)

    Lane, Michael

    2013-06-28T23:59:59.000Z

    Proposed drill sites for intermediate depth temperature gradient holes and/or deep resource confirmation wells. Temperature gradient contours based on shallow TG program and faults interpreted from seismic reflection survey are shown, as are two faults interpreted by seismic contractor Optim but not by Oski Energy, LLC.

  9. Turbodrilling in the geothermal environment

    SciTech Connect (OSTI)

    Herbert, P.

    1981-01-01T23:59:59.000Z

    Geothermal drilling, historically, has presented what seemed to be insurmountable barriers to the efficient and extended use of downhole drilling motors, especially those containing elastomeric bearing or motor components. In addition to being damaging to rubber, the typical temperatures of 350-700/degree/ F create other operating problems as well. Recent innovations, specifically in the Turbodrill design, have opened unrealized potentials and allowed, for the first time, extended downhole drilling of geothermal wells. A presentation is made of the case histories of recent Turbodrill performances in all areas where used. Furthermore, data is presented showing the performance of insert, diamond, and Stratapax bits as they relate to the Turbodrill, together with forecasts as to the potential that turbodrills have to offer in accelerating and controlling the drilling of geothermal and hot petroleum wells. 1 ref.

  10. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    is an important parameter in geothermal drilling since it affects drilling fluid, operations and equipment THE INLET AND OUTLET MUD TEMPERATURES WHILE DRILLING GEOTHERMAL FORMATIONS Sema Tekin1 and Serhat Akin2 1-Omerbeyli field were estimated by using mud inlet and outlet temperatures obtained during drilling. GTEMP wellbore

  11. Exploration Of The Upper Hot Creek Ranch Geothermal Resource...

    Open Energy Info (EERE)

    planned but higher than anticipated drilling and permitting costs within a fixed budget reduced the number of holes to five. Four of the five holes drilled to depths of 300...

  12. ERRATA SHEET for ''Lithology and Stratigraphy of Holes Drilled in LANL-Use Areas of the Nevada Test Site''

    SciTech Connect (OSTI)

    L. B. Prothro; S. L. Drellack, Jr.; B. M. Allen

    2001-12-01T23:59:59.000Z

    A conversion error has been discovered in the physical property data table for Emplacement Hole U-19bg (Supplemental Data) presented on Page 89. Data in the column labeled ''Bulk Density (g/cc)'' are actually presented in pounds per cubic foot rather than grams per cubic centimeter. The following table presents the bulk density values for U-19bg in pounds per cubic foot and grams per cubic centimeter.

  13. El Paso County Geothermal Project at Fort Bliss

    Broader source: Energy.gov (indexed) [DOE]

    GIS database development * Conceptual geologicgeothermal system modeling - Slim-hole drilling & Resource testing * Corecuttings analysis including XRD * Integrated wellbore...

  14. Black Warrior: Sub-soil gas and fluid inclusion exploration and slim well drilling

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project Objectives: Discover a blind, low-moderate temperature resource: Apply a combination of detailed sub-soil gas, hydrocarbon, and isotope data to define possible upflow areas; Calibrate the sub-soil chemistry with down-hole fluid inclusion stratigraphy and fluid analyses to define a follow-up exploration drilling target; Create short term jobs and long term employment through resource exploration, development and power plant operation; Extend and adapt the DOE sub-soil 2 meter probe technology to gas sampling.

  15. Corrosion reference for geothermal downhole materials selection

    SciTech Connect (OSTI)

    Ellis, P.F. II, Smith, C.C.; Keeney, R.C.; Kirk, D.K.; Conover, M.F.

    1983-03-01T23:59:59.000Z

    Geothermal downhole conditions that may affect the performance and reliability of selected materials and components used in the drilling, completion, logging, and production of geothermal wells are reviewed. The results of specific research and development efforts aimed at improvement of materials and components for downhole contact with the hostile physicochemical conditions of the geothermal reservoir are discussed. Materials and components covered are tubular goods, stainless steels and non-ferrous metals for high-temperature downhole service, cements for high-temperature geothermal wells, high-temperature elastomers, drilling and completion tools, logging tools, and downhole pumps. (MHR)

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

    SciTech Connect (OSTI)

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

    1983-12-01T23:59:59.000Z

    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.

  17. Directional drilling sub

    SciTech Connect (OSTI)

    Benoit, L.F.

    1980-09-02T23:59:59.000Z

    A directional drilling ''sub'' provides a shifting end portion which allows the sub to be rotated from a first in-line axially straight orientation with the drill string to a second angled or ''bent'' position which second position is normally associated with conventional bent ''subs'' which are permanently structured in the bent position. The device shifts from the first (In-line) position to the second (Bent) position upon the application of torsional force thereto which torsional force can be applied, for example, by the actuation of a ''turbodrill'' (Normally attached thereto in operation). The device can be manufactured or machined to provide varying angles to the sub in its bent position to satisfy differing directional drilling situations. The axially aligned first position allows easy entry of the drill string, sub , and turbodrill into the well hole, while the second bend position is used to commence directional drilling. The sub will return gradually to its original axially aligned position when the device is withdrawn from the wellhole, as such position is the path of minimum resistance for the withdrawing drill string and torsion is not present to hold the sub in the bent position.

  18. Development of a geothermal resource in a fractured volcanic formation: Case study of the Sumikawa Geothermal Field, Japan. Final report, May 1, 1995--November 30, 1997

    SciTech Connect (OSTI)

    Garg, S.K.; Combs, J.; Pritchett, J.W. [and others

    1997-07-01T23:59:59.000Z

    The principal purpose of this case study of the Sumikawa Geothermal Field is to document and to evaluate the use of drilling logs, surface and downhole geophysical measurements, chemical analyses and pressure transient data for the assessment of a high temperature volcanic geothermal field. This comprehensive report describes the work accomplished during FY 1993-1996. A brief review of the geological and geophysical surveys at the Sumikawa Geothermal Field is presented (Section 2). Chemical data, consisting of analyses of steam and water from Sumikawa wells, are described and interpreted to indicate compositions and temperatures of reservoir fluids (Section 3). The drilling information and downhole pressure, temperature and spinner surveys are used to determine feedzone locations, pressures and temperatures (Section 4). Available injection and production data from both slim holes and large-diameter wells are analyzed to evaluate injectivity/productivity indices and to investigate the variation of discharge rate with borehole diameter (Section 5). New interpretations of pressure transient data from several wells are discussed (Section 6). The available data have been synthesized to formulate a conceptual model for the Sumikawa Geothermal Field (Section 7).

  19. Proceedings of the symposium on the Long Valley Caldera: A pre-drilling data review

    SciTech Connect (OSTI)

    Goldstein, N.E. (ed.)

    1987-09-01T23:59:59.000Z

    This proceedings volume contains papers or abstracts of papers presented at a two-day symposium held at the Lawrence Berkeley Laboratory (LBL) on 17 and 18 March 1987. Speakers presented a large body of new scientific results and geologic-hydrogeoloic interpretations for the Long Valley caldera. The talks and the discussions that followed focused on concepts and models for the present-day magmatic-hydrothermal system. Speakers at the symposium also addressed the topic of where to site future scientific drill holes in the caldera. Deep scientific drilling projects such as those being contemplated by the DOE Division of Geothermal Technology (DGT), under the Magma Energy Program, and by the DOE Office of Energy Research, Division of Engineering and Geosciences (DEG), along with the USGS and NSE, under the Continental Scientific Drilling Program (CSDP), will be major and expensive national undertakings. DOE/DEG is sponsoring a program of relatively shallow coreholes in the caldera, and DOE/DGT is considering the initiation of a multiphase program to drill a deep hole for geophysical observations and sampling of the ''near magmatic'' environment as early as FY 1988, depending on the DOE budget. Separate abstracts have been prepared for the individual papers.

  20. Southwest Alaska Regional Geothermal Energy Project

    Broader source: Energy.gov (indexed) [DOE]

    the world. Project Overview 3 | US DOE Geothermal Program eere.energy.gov * Drilling to target depth of 12,000 to 14,000 feet is extremely expensive. * High existing...

  1. Newberry exploratory slimhole: Drilling and testing

    SciTech Connect (OSTI)

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

    1997-11-01T23:59:59.000Z

    During July--November, 1995, Sandia National Laboratories, in cooperation with CE Exploration, drilled a 5,360 feet exploratory slimhole (3.895 inch 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. 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.

  2. Exploration of the Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada

    SciTech Connect (OSTI)

    Dick Benoit; David Blackwell

    2006-01-01T23:59:59.000Z

    The Upper Hot Creek Ranch (UHCR) geothermal system had seen no significant exploration activity prior to initiation of this GRED III project. Geochemical geothermometers calculated from previously available but questionable quality analyses of the UHCR hot spring waters indicated possible subsurface temperatures of +320 oF. A complex Quaternary and Holocene faulting pattern associated with a six mile step over of the Hot Creek Range near the UHCR also indicated that this area was worthy of some exploration activity. Permitting activities began in Dec. 2004 for the temperature-gradient holes but took much longer than expected with all drilling permits finally being received in early August 2005. The drilling and geochemical sampling occurred in August 2005. Ten temperature gradient holes up to 500’ deep were initially planned but higher than anticipated drilling and permitting costs within a fixed budget reduced the number of holes to five. Four of the five holes drilled to depths of 300 to 400’ encountered temperatures close to the expected regional thermal background conditions. These four holes failed to find any evidence of a large thermal anomaly surrounding the UHCR hot springs. The fifth hole, located within a narrow part of Hot Creek Canyon, encountered a maximum temperature of 81 oF at a depth of 105’ but had cooler temperatures at greater depth. Temperature data from this hole can not be extrapolated to greater depths. Any thermal anomaly associated with the UHCR geothermal system is apparently confined to the immediate vicinity of Hot Creek Canyon where challenges such as topography, a wilderness study area, and wetlands issues will make further exploration time consuming and costly. Ten water samples were collected for chemical analysis and interpretation. Analyses of three samples of the UHCR thermal give predicted subsurface temperatures ranging from 317 to 334 oF from the Na-K-Ca, silica (quartz), and Na-Li geothermometers. The fact that all three thermometers closely agree gives the predictions added credibility. Unfortunately, the final result of this exploration is that a moderate temperature geothermal resource has been clearly identified but it appears to be restricted to a relatively small area that would be difficult to develop.

  3. PDM vs. Turbodrill: A drilling comparison

    SciTech Connect (OSTI)

    De Lucia, F.; Herbert, P.

    1984-09-01T23:59:59.000Z

    This study was undertaken to investigate and compare the two most prevalent down-hole motor types, Positive-Displacement and Turbodrill. The intent of this comparison was to evaluate the technical and operational performance characteristics and present them in a manner to aid the drilling contractor or drilling engineer in determining the best down-hole motor for a specific drilling application. Each type of drilling tool utilizing either power source possesses unique characteristics which can be tailored to the overall system to optimize the target objective; increase ROP at less cost.

  4. GRAIN-SCALE FAILURE IN THERMAL SPALLATION DRILLING

    SciTech Connect (OSTI)

    Walsh, S C; Lomov, I; Roberts, J J

    2012-01-19T23:59:59.000Z

    Geothermal power promises clean, renewable, reliable and potentially widely-available energy, but is limited by high initial capital costs. New drilling technologies are required to make geothermal power financially competitive with other energy sources. One potential solution is offered by Thermal Spallation Drilling (TSD) - a novel drilling technique in which small particles (spalls) are released from the rock surface by rapid heating. While TSD has the potential to improve drilling rates of brittle granitic rocks, the coupled thermomechanical processes involved in TSD are poorly described, making system control and optimization difficult for this drilling technology. In this paper, we discuss results from a new modeling effort investigating thermal spallation drilling. In particular, we describe an explicit model that simulates the grain-scale mechanics of thermal spallation and use this model to examine existing theories concerning spalling mechanisms. We will report how borehole conditions influence spall production, and discuss implications for macro-scale models of drilling systems.

  5. Innovative Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project Summary: Locate and drill two exploration wells that will be used to define the nature and extent of the geothermal resources on Jemez Pueblo in the Indian Springs area.

  6. GRED STUDIES AND DRILLING OF AMERICULTURE STATE 2, AMERICULTURE TILAPIA FARM LIGHTNING DOCK KGRA, ANIMAS VALLEY, NM

    SciTech Connect (OSTI)

    Witcher, James

    2006-08-01T23:59:59.000Z

    This report summarizes the GRED drilling operations in the AmeriCulture State 2 well with an overview of the preliminary geologic and geothermal findings, from drill cuttings, core, geophysical logs and water geochemical sampling.

  7. The Preston Geothermal Resources; Renewed Interest in a Known Geothermal Resource Area

    SciTech Connect (OSTI)

    Thomas R Wood; Wade Worthing; Cody Cannon; Carl Palmer; Ghanashyam Neupane; Travis L McLing; Earl Mattson; Patric Dobson; Mark Conrad

    2015-01-01T23:59:59.000Z

    The Preston Geothermal prospect is located in northern Cache Valley approximately 8 kilometers north of the city of Preston, in southeast Idaho. The Cache Valley is a structural graben of the northern portion of the Basin and Range Province, just south of the border with the Eastern Snake River Plain (ESRP). This is a known geothermal resource area (KGRA) that was evaluated in the 1970's by the State of Idaho Department of Water Resources (IDWR) and by exploratory wells drilled by Sunedco Energy Development. The resource is poorly defined but current interpretations suggest that it is associated with the Cache Valley structural graben. Thermal waters moving upward along steeply dipping northwest trending basin and range faults emanate in numerous hot springs in the area. Springs reach temperatures as hot as 84° C. Traditional geothermometry models estimated reservoir temperatures of approximately 125° C in the 1970’s study. In January of 2014, interest was renewed in the areas when a water well drilled to 79 m (260 ft) yielded a bottom hole temperature of 104° C (217° F). The well was sampled in June of 2014 to investigate the chemical composition of the water for modeling geothermometry reservoir temperature. Traditional magnesium corrected Na-K-Ca geothermometry estimates this new well to be tapping water from a thermal reservoir of 227° C (440° F). Even without the application of improved predictive methods, the results indicate much higher temperatures present at much shallower depths than previously thought. This new data provides strong support for further investigation and sampling of wells and springs in the Northern Cache Valley, proposed for the summer of 2015. The results of the water will be analyzed utilizing a new multicomponent equilibrium geothermometry (MEG) tool called Reservoir Temperature Estimate (RTEst) to obtain an improved estimate of the reservoir temperature. The new data suggest that other KGRAs and overlooked areas may need to be investigated using improved geothermal exploration methods.

  8. Geothermal programs at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Kasameyer, P.W.; Younker, L.W.

    1987-07-10T23:59:59.000Z

    Lawrence Livermore National Laboratory has a number of geothermal programs supported through two offices in the Department of Energy: the Office of Renewable Technologies, Geothermal Technologies Division, and the Office of Basic Energy Sciences, Division of Engineering, Mathematics and Geosciences. Within these programs, we are carrying out research in injection monitoring, optical instrumentation for geothermal wells, seismic imaging methods, geophysical and drilling investigations of young volcanic systems in California, and fundamental studies of the rock and mineral properties.

  9. Program for the improvement of downhole drilling-motor bearings and seals. Final report: Phase III, Part 1

    SciTech Connect (OSTI)

    Not Available

    1980-03-01T23:59:59.000Z

    A systematic laboratory testing and evaluation program to select high-temperature seals, bearings, and lubricants for geothermal downhole drilling motors is summarized.

  10. Geothermal Literature Review At Long Valley Caldera Geothermal...

    Open Energy Info (EERE)

    1998 of a 3000-m-deep drill hole on the resurgent dome has provided useful information on present and past periods of circulation of water at temperatures of 100-200C within the...

  11. Geothermal: Sponsored by OSTI -- Recovery Act: Sub?Soil Gas and...

    Office of Scientific and Technical Information (OSTI)

    and Fluid Inclusion Exploration and Slim Well Drilling, Pumpernickel Valley, Nevada Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search...

  12. Precision micro drilling with copper vapor lasers

    SciTech Connect (OSTI)

    Chang, J.J.; Martinez, M.W.; Warner, B.E.; Dragon, E.P.; Huete, G.; Solarski, M.E.

    1994-09-02T23:59:59.000Z

    The authors have developed a copper vapor laser based micro machining system using advanced beam quality control and precision wavefront tilting technologies. Micro drilling has been demonstrated through percussion drilling and trepanning using this system. With a 30 W copper vapor laser running at multi-kHz pulse repetition frequency, straight parallel holes with size varying from 500 microns to less than 25 microns and with aspect ratio up to 1:40 have been consistently drilled on a variety of metals with good quality. For precision trepanned holes, the hole-to-hole size variation is typically within 1% of its diameter. Hole entrance and exit are both well defined with dimension error less than a few microns. Materialography of sectioned holes shows little (sub-micron scale) recast layer and heat affected zone with surface roughness within 1--2 microns.

  13. Comprehensive Ocean Drilling

    E-Print Network [OSTI]

    Comprehensive Ocean Drilling Bibliography containing citations related to the Deep Sea Drilling Project, Ocean Drilling Program, Integrated Ocean Drilling Program, and International Ocean Discovery Program Last updated: May 2014 #12;Comprehensive Bibliography Comprehensive Ocean Drilling Bibliography

  14. Geothermal heating for Caliente, Nevada

    SciTech Connect (OSTI)

    Wallis, F.; Schaper, J.

    1981-02-01T23:59:59.000Z

    Utilization of geothermal resources in the town of Caliente, Nevada (population 600) has been the objective of two grants. The first grant was awarded to Ferg Wallis, part-owner and operator of the Agua Caliente Trailer Park, to assess the potential of hot geothermal water for heating the 53 trailers in his park. The results from test wells indicate sustainable temperatures of 140/sup 0/ to 160/sup 0/F. Three wells were drilled to supply all 53 trailers with domestic hot water heating, 11 trailers with space heating and hot water for the laundry from the geothermal resource. System payback in terms of energy cost-savings is estimated at less than two years. The second grant was awarded to Grover C. Dils Medical Center in Caliente to drill a geothermal well and pipe the hot water through a heat exchanger to preheat air for space heating. This geothermal preheater served to convert the existing forced air electric furnace to a booster system. It is estimated that the hospital will save an average of $5300 in electric bills per year, at the current rate of $.0275/KWH. This represents a payback of approximately two years. Subsequent studies on the geothermal resource base in Caliente and on the economics of district heating indicate that geothermal may represent the most effective supply of energy for Caliente. Two of these studies are included as appendices.

  15. Status Report A Review of Slimhole Drilling

    SciTech Connect (OSTI)

    Zhu, Tao; Carroll, Herbert B.

    1994-09-01T23:59:59.000Z

    This 1994 report reviews the various applications of slimhole technology including for exploration in remote areas, low-cost development wells, reentering existing wells, and horizontal and multilateral drilling. Advantages of slimholes to regular holes are presented. Limitations and disadvantages of slimholes are also discussed. In 1994, slimhole drilling was still an ongoing development technology. (DJE 2005)

  16. OCEAN DRILLING PROGRAM LEG 111 SCIENTIFIC PROSPECTUS

    E-Print Network [OSTI]

    under the international Ocean Drilling Program which is managed by Joint Oceanographic Institutions, Inc by the following agencies: Department of Energy, Mines and Resources (Canada) Deutsche ForschungsgemeinschaftOCEAN DRILLING PROGRAM LEG 111 SCIENTIFIC PROSPECTUS DSDP HOLE 504B REVISITED Keir Becker

  17. Environmental Assessment Lakeview Geothermal Project

    SciTech Connect (OSTI)

    Treis, Tania

    2012-04-30T23:59:59.000Z

    The Town of Lakeview is proposing to construct and operate a geothermal direct use district heating system in Lakeview, Oregon. The proposed project would be in Lake County, Oregon, within the Lakeview Known Geothermal Resources Area (KGRA). The proposed project includes the following elements: � Drilling, testing, and completion of a new production well and geothermal water injection well � Construction and operation of a geothermal production fluid pipeline from the well pad to various Town buildings (i.e., local schools, hospital, and Lake County Industrial Park) and back to a geothermal water injection well This EA describes the proposed project, the alternatives considered, and presents the environmental analysis pursuant to the National Environmental Policy Act. The project would not result in adverse effects to the environment with the implementation of environmental protection measures.

  18. Geothermal Progress Monitor report No. 8. Progress report

    SciTech Connect (OSTI)

    Not Available

    1983-11-01T23:59:59.000Z

    Geothermal Progress Monitor (GPM) Report Number 8 presents information concerning ongoing technology transfer activities and the mechanisms used to support these activities within geothermal R and D programs. A state-by-state review of major geothermal development activities for the reporting period 1 February 1983 through 31 July 1983 is provided. Recent drilling and exploration efforts and the current status of geothermal electric power plant development in the United States are summarized.

  19. Caldera processes and magma-hydrothermal systems continental scientific drilling program: thermal regimes, Valles caldera research, scientific and management plan

    SciTech Connect (OSTI)

    Goff, F.; Nielson, D.L. (eds.)

    1986-05-01T23:59:59.000Z

    Long-range core-drilling operations and initial scientific investigations are described for four sites in the Valles caldera, New Mexico. The plan concentrates on the period 1986 to 1993 and has six primary objectives: (1) study the origin, evolution, physical/chemical dynamics of the vapor-dominated portion of the Valles geothermal system; (2) investigate the characteristics of caldera fill and mechanisms of caldera collapse and resurgence; (3) determine the physical/chemical conditions in the heat transfer zone between crystallizing plutons and the hydrothermal system; (4) study the mechanism of ore deposition in the caldera environment; (5) develop and test high-temperature drilling techniques and logging tools; and (6) evaluate the geothermal resource within a large silicic caldera. Core holes VC-2a (500 m) and VC-2b (2000 m) are planned in the Sulphur Springs area; these core holes will probe the vapor-dominated zone, the underlying hot-water-dominated zone, the boiling interface and probable ore deposition between the two zones, and the deep structure and stratigraphy along the western part of the Valles caldera fracture zone and resurgent dome. Core hole VC-3 will involve reopening existing well Baca number12 and deepening it from 3.2 km (present total depth) to 5.5 km, this core hole will penetrate the deep-crystallized silicic pluton, investigate conductive heat transfer in that zone, and study the evolution of the central resurgent dome. Core hole VC-4 is designed to penetrate deep into the presumably thick caldera fill in eastern Valles caldera and examine the relationship between caldera formation, sedimentation, tectonics, and volcanism. Core hole VC-5 is to test structure, stratigraphy, and magmatic evolution of pre-Valles caldera rocks, their relations to Valles caldera, and the influences of regional structure on volcanism and caldera formation.

  20. Geothermal materials development activities

    SciTech Connect (OSTI)

    Kukacka, L.E.

    1993-06-01T23:59:59.000Z

    This ongoing R&D program is a part of the Core Research Category of the Department of Energy/Geothermal Division initiative to accelerate the utilization of geothermal resources. High risk materials problems that if successfully solved will result in significant reductions in well drilling, fluid transport and energy conversion costs, are emphasized. The project has already developed several advanced materials systems that are being used by the geothermal industry and by Northeastern Electric, Gas and Steam Utilities. Specific topics currently being addressed include lightweight C0{sub 2}-resistant well cements, thermally conductive scale and corrosion resistant liner systems, chemical systems for lost circulation control, elastomer-metal bonding systems, and corrosion mitigation at the Geysers. Efforts to enhance the transfer of the technologies developed in these activities to other sectors of the economy are also underway.

  1. Geothermal Resource Analysis and Structure of Basin and Range Systems, Especially Dixie Valley Geothermal Field, Nevada

    SciTech Connect (OSTI)

    David Blackwell; Kenneth Wisian; Maria Richards; Mark Leidig; Richard Smith; Jason McKenna

    2003-08-14T23:59:59.000Z

    Publish new thermal and drill data from the Dizie Valley Geothermal Field that affect evaluation of Basin and Range Geothermal Resources in a very major and positive way. Completed new geophysical surveys of Dizie Valley including gravity and aeromagnetics and integrated the geophysical, seismic, geological and drilling data at Dizie Valley into local and regional geologic models. Developed natural state mass and energy transport fluid flow models of generic Basin and Range systems based on Dizie Valley data that help to understand the nature of large scale constraints on the location and characteristics of the geothermal systems. Documented a relation between natural heat loss for geothermal and electrical power production potential and determined heat flow for 27 different geothermal systems. Prepared data set for generation of a new geothermal map of North American including industry data totaling over 25,000 points in the US alone.

  2. Geothermal program review 16: Proceedings. A strategic plan for geothermal research

    SciTech Connect (OSTI)

    NONE

    1998-12-31T23:59:59.000Z

    The proceedings contain 21 papers arranged under the following topical sections: Exploration technology (4 papers); Reservoir technology (5 papers); Energy conversion technology (8 papers); Drilling technology (2 papers); and Direct use and geothermal heat pump technology (2 papers). An additional section contains a report on a workshop on dual-use technologies for hydrothermal and advanced geothermal reservoirs.

  3. Continuous injection of an inert gas through a drill rig for drilling into potentially hazardous areas

    DOE Patents [OSTI]

    McCormick, S.H.; Pigott, W.R.

    1997-12-30T23:59:59.000Z

    A drill rig for drilling in potentially hazardous areas includes a drill having conventional features such as a frame, a gear motor, gear box, and a drive. A hollow rotating shaft projects through the drive and frame. An auger, connected to the shaft is provided with a multiplicity of holes. An inert gas is supplied to the hollow shaft and directed from the rotating shaft to the holes in the auger. The inert gas flows down the hollow shaft, and then down the hollow auger and out through the holes in the bottom of the auger into the potentially hazardous area. 3 figs.

  4. Continuous injection of an inert gas through a drill rig for drilling into potentially hazardous areas

    DOE Patents [OSTI]

    McCormick, Steve H. (Idaho Falls, ID); Pigott, William R. (Idaho Falls, ID)

    1997-01-01T23:59:59.000Z

    A drill rig for drilling in potentially hazardous areas includes a drill having conventional features such as a frame, a gear motor, gear box, and a drive. A hollow rotating shaft projects through the drive and frame. An auger, connected to the shaft is provided with a multiplicity of holes. An inert gas is supplied to the hollow shaft and directed from the rotating shaft to the holes in the auger. The inert gas flows down the hollow shaft, and then down the hollow auger and out through the holes in the bottom of the auger into the potentially hazardous area.

  5. Drilling optimization using drilling simulator software 

    E-Print Network [OSTI]

    Salas Safe, Jose Gregorio

    2004-09-30T23:59:59.000Z

    al. 8 ) Select Bits and Operational Parameters Determine The Drilling Cost Drilling Data Recorded(Offset Well) Drilling ROP Model Labs Test and Correlations GDL (Unconfined Rock Strength) Drilling ROP Model New Set Operational Parameters and Bits... ROP PredictionsBits Wear DeterminationCost per Foot Drilling Data Recorded(Offset Well) Drilling ROP Model Labs Test and Correlations GDL (Unconfined Rock Strength) Drilling ROP Model New Set Operational Parameters and Bits ROP PredictionsBits Wear...

  6. ResonantSonic drilling. Innovative technology summary report

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    The technology of ResonantSonic drilling is described. This technique has been demonstrated and deployed as an innovative tool to access the subsurface for installation of monitoring and/or remediation wells and for collection of subsurface materials for environmental restoration applications. The technology uses no drilling fluids, is safe and can be used to drill slant holes.

  7. Geothermal power development in Hawaii. Volume I. Review and analysis

    SciTech Connect (OSTI)

    Not Available

    1982-06-01T23:59:59.000Z

    The history of geothermal exploration in Hawaii is reviewed briefly. The nature and occurrences of geothermal resources are presented island by island. An overview of geothermal markets is presented. Other topies covered are: potential markets of the identified geothermal areas, well drilling technology, hydrothermal fluid transport, overland and submarine electrical transmission, community aspects of geothermal development, legal and policy issues associated with mineral and land ownership, logistics and infrastructure, legislation and permitting, land use controls, Regulation 8, Public Utilities Commission, political climate and environment, state plans, county plans, geothermal development risks, and business planning guidelines.

  8. Geothermal Energy Association Recognizes the National Geothermal...

    Energy Savers [EERE]

    Geothermal Energy Association Recognizes the National Geothermal Data System Geothermal Energy Association Recognizes the National Geothermal Data System July 29, 2014 - 8:20am...

  9. US Geothermal, Inc. | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc. US Geothermal, Inc....

  10. drilling.indd

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DRILLING PROGRAM Objective R MOTC's Drilling Program provides opportuni- ties for testing and demonstrating a broad range of new drilling technologies. Background RMOTC is a U.S....

  11. Observation Wells At Fenton Hill HDR Geothermal Area (Shevenell...

    Open Energy Info (EERE)

    Basis Geophone emplacement holes PC-1 and PC-2 were drilled at Fenton Hill by Maness Drilling Company of Farmington, NM for Los Alamos National Laboratory in 1984. These wells...

  12. Thermal Gradient Holes At Upper Hot Creek Ranch Area (Benoit...

    Open Energy Info (EERE)

    planned but higher than anticipated drilling and permitting costs within a fixed budget reduced the number of holes to five. Four of the five holes drilled to depths of 300...

  13. Geothermal Case Studies

    SciTech Connect (OSTI)

    Young, Katherine

    2014-09-30T23:59:59.000Z

    The US Geological Survey (USGS) resource assessment (Williams et al., 2009) outlined a mean 30GWe of undiscovered hydrothermal resource in the western US. One goal of the Geothermal Technologies Office (GTO) is to accelerate the development of this undiscovered resource. The Geothermal Technologies Program (GTP) Blue Ribbon Panel (GTO, 2011) recommended that DOE focus efforts on helping industry identify hidden geothermal resources to increase geothermal capacity in the near term. Increased exploration activity will produce more prospects, more discoveries, and more readily developable resources. Detailed exploration case studies akin to those found in oil and gas (e.g. Beaumont, et al, 1990) will give operators a single point of information to gather clean, unbiased information on which to build geothermal drilling prospects. To support this effort, the National Renewable Energy laboratory (NREL) has been working with the Department of Energy (DOE) to develop a template for geothermal case studies on the Geothermal Gateway on OpenEI. In fiscal year 2013, the template was developed and tested with two case studies: Raft River Geothermal Area (http://en.openei.org/wiki/Raft_River_Geothermal_Area) and Coso Geothermal Area (http://en.openei.org/wiki/Coso_Geothermal_Area). In fiscal year 2014, ten additional case studies were completed, and additional features were added to the template to allow for more data and the direct citations of data. The template allows for: Data - a variety of data can be collected for each area, including power production information, well field information, geologic information, reservoir information, and geochemistry information. Narratives ? general (e.g. area overview, history and infrastructure), technical (e.g. exploration history, well field description, R&D activities) and geologic narratives (e.g. area geology, hydrothermal system, heat source, geochemistry.) Exploration Activity Catalog - catalog of exploration activities conducted in the area (with dates and references.) NEPA Analysis ? a query of NEPA analyses conducted in the area (that have been catalogued in the OpenEI NEPA database.) In fiscal year 2015, NREL is working with universities to populate additional case studies on OpenEI. The goal is to provide a large enough dataset to start conducting analyses of exploration programs to identify correlations between successful exploration plans for areas with similar geologic occurrence models.

  14. Offshore application of a novel technology for drilling vertical boreholes

    SciTech Connect (OSTI)

    Foster, P.E. [Elf Enterprise Caldeonia Ltd., Aberdeen (United Kingdom); Aitken, A. [Baker Hughes INTEQ, Aberdeen (United Kingdom)

    1996-03-01T23:59:59.000Z

    A new concept for automatically drilling vertical boreholes was recently implemented by Elf Enterprise Caledonia called the vertical drilling system (VDS). The VDS was used to drill the 16-in. hole section of a North Sea exploration well. This was the first time this technology had been used offshore, drilling from a semisubmersible drilling unit. The VDS was shown to have an application in penetrating a drilling target that required a near-vertical wellbore. Technical functioning of the tool and field experience is reported along with performance comparisons to offset wells.

  15. A Method for Estimating Undiscovered Geothermal Resources in...

    Open Energy Info (EERE)

    was estimated using digital maps of geothermal wells, temperature gradient holes, oil wells, water wells, and depth to the water table. The resulting resource estimate does...

  16. Geothermal Development and the Use of Categorical Exclusions (Poster)

    SciTech Connect (OSTI)

    Levine, A.; Young, K. R.

    2014-09-01T23:59:59.000Z

    The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs;Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONSI's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.

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

    SciTech Connect (OSTI)

    Erdlac, Richard J., Jr.

    2006-10-12T23:59:59.000Z

    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 10’s 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 100’s 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

  18. Away from the Range Front- Intra-Basin Geothermal Exploration

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project highlights: Escalate mechanical and structural methods to build on; Push-core may optimize shallow drilling; & Over-coring stress measurement may reveal local stress.

  19. Geothermal Energy Research and Development Program; Project Summaries

    SciTech Connect (OSTI)

    None

    1994-03-01T23:59:59.000Z

    This is an internal DOE Geothermal Program document. This document contains summaries of projects related to exploration technology, reservoir technology, drilling technology, conversion technology, materials, biochemical processes, and direct heat applications. [DJE-2005

  20. GEOTHERMAL POWER GENERATION PLANT

    SciTech Connect (OSTI)

    Boyd, Tonya

    2013-12-01T23:59:59.000Z

    Oregon Institute of Technology (OIT) drilled a deep geothermal well on campus (to 5,300 feet deep) which produced 196oF resource as part of the 2008 OIT Congressionally Directed Project. OIT will construct a geothermal power plant (estimated at 1.75 MWe gross output). The plant would provide 50 to 75 percent of the electricity demand on campus. Technical support for construction and operations will be provided by OIT’s Geo-Heat Center. The power plant will be housed adjacent to the existing heat exchange building on the south east corner of campus near the existing geothermal production wells used for heating campus. Cooling water will be supplied from the nearby cold water wells to a cooling tower or air cooling may be used, depending upon the type of plant selected. Using the flow obtained from the deep well, not only can energy be generated from the power plant, but the “waste” water will also be used to supplement space heating on campus. A pipeline will be construction from the well to the heat exchanger building, and then a discharge line will be construction around the east and north side of campus for anticipated use of the “waste” water by facilities in an adjacent sustainable energy park. An injection well will need to be drilled to handle the flow, as the campus existing injection wells are limited in capacity.

  1. Federal Geothermal Research Program Update - Fiscal Year 2004

    SciTech Connect (OSTI)

    Patrick Laney

    2005-03-01T23:59:59.000Z

    The Department of Energy (DOE) and its predecessors have conducted research and development (R&D) in geothermal energy since 1971. The Geothermal Technologies Program (GTP) works in partnership with industry to establish geothermal energy as an economically competitive contributor to the U.S. energy supply. Geothermal energy production, a $1.5 billion a year industry, generates electricity or provides heat for direct use applications. The technologies developed by the Geothermal Technologies Program will provide the Nation with new sources of electricity that are highly reliable and cost competitive and do not add to America's air pollution or the emission of greenhouse gases. Geothermal electricity generation is not subject to fuel price volatility and supply disruptions from changes in global energy markets. Geothermal energy systems use a domestic and renewable source of energy. The Geothermal Technologies Program develops innovative technologies to find, access, and use the Nation's geothermal resources. These efforts include emphasis on Enhanced Geothermal Systems (EGS) with continued R&D on geophysical and geochemical exploration technologies, improved drilling systems, and more efficient heat exchangers and condensers. The Geothermal Technologies Program is balanced between short-term goals of greater interest to industry, and long-term goals of importance to national energy interests. The program's research and development activities are expected to increase the number of new domestic geothermal fields, increase the success rate of geothermal well drilling, and reduce the costs of constructing and operating geothermal power plants. These improvements will increase the quantity of economically viable geothermal resources, leading in turn to an increased number of geothermal power facilities serving more energy demand. These new geothermal projects will take advantage of geothermal resources in locations where development is not currently possible or economical.

  2. Federal Geothermal Research Program Update Fiscal Year 2004

    SciTech Connect (OSTI)

    Not Available

    2005-03-01T23:59:59.000Z

    The Department of Energy (DOE) and its predecessors have conducted research and development (R&D) in geothermal energy since 1971. The Geothermal Technologies Program (GTP) works in partnership with industry to establish geothermal energy as an economically competitive contributor to the U.S. energy supply. Geothermal energy production, a $1.5 billion a year industry, generates electricity or provides heat for direct use applications. The technologies developed by the Geothermal Technologies Program will provide the Nation with new sources of electricity that are highly reliable and cost competitive and do not add to America's air pollution or the emission of greenhouse gases. Geothermal electricity generation is not subject to fuel price volatility and supply disruptions from changes in global energy markets. Geothermal energy systems use a domestic and renewable source of energy. The Geothermal Technologies Program develops innovative technologies to find, access, and use the Nation's geothermal resources. These efforts include emphasis on Enhanced Geothermal Systems (EGS) with continued R&D on geophysical and geochemical exploration technologies, improved drilling systems, and more efficient heat exchangers and condensers. The Geothermal Technologies Program is balanced between short-term goals of greater interest to industry, and long-term goals of importance to national energy interests. The program's research and development activities are expected to increase the number of new domestic geothermal fields, increase the success rate of geothermal well drilling, and reduce the costs of constructing and operating geothermal power plants. These improvements will increase the quantity of economically viable geothermal resources, leading in turn to an increased number of geothermal power facilities serving more energy demand. These new geothermal projects will take advantage of geothermal resources in locations where development is not currently possible or economical.

  3. High-Temperature-High-Volume Lifting for Enhanced Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    Turnquist GE Global Research High Temperature Tools and Sensors, Down-hole Pumps and Drilling May 19, 2010 This presentation does not contain any proprietary confidential, or...

  4. Geologic Map and GIS Data for the Tuscarora Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    - 3D model constructed with EarthVision using geologic map data, cross?sections, drill?hole data, and geophysics (model not in the ESRI geodatabase).

  5. Finding Large Aperture Fractures in Geothermal Resource Areas...

    Open Energy Info (EERE)

    -Significantly reduced number of dry holes, fewer wells drilled and higher per-well productivity for a given wellfield power output -Significantly reduce parasitic loads for...

  6. Salton Sea Scientific Drilling Project: A summary of drilling and engineering activities and scientific results

    SciTech Connect (OSTI)

    Ross, H.P.; Forsgren, C.K. (eds.)

    1992-04-01T23:59:59.000Z

    The Salton Sea Scientific g Project (SSSDP) completed the first major well in the United States Continental Scientific Drilling Program. The well (State 2-14) was drilled to 10,W ft (3,220 m) in the Salton Sea Geothermal Field in California's Imperial Valley, to permit scientific study of a deep, high-temperature portion of an active geothermal system. The program was designed to investigate, through drilling and testing, the subsurface thermal, chemical, and mineralogical environments of this geothermal area. Extensive samples and data, including cores, cuttings, geothermal fluids and gases, and geophysical logs, were collected for future scientific analysis, interpretation, and publication. Short duration flow tests were conducted on reservoirs at a depth of approximately 6,120 ft (1,865 m) and at 10,136 ft (3,089 m). This report summarizes all major activities of the SSSDP, from project inception in the fall of 1984 through brine-pond cleanup and site restoration, ending in February 1989. This report presents a balanced summary of drilling, coring, logging, and flow-test operations, and a brief summary of technical and scientific results. Frequent reference is made to original records, data, and publication of results. The report also reviews the proposed versus the final well design, and operational summaries, such as the bit record, the casing and cementing program, and the coring program. Summaries are and the results of three flow tests. Several teamed during the project.

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

    SciTech Connect (OSTI)

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

    1981-08-01T23:59:59.000Z

    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.

  8. DRILLED HYDROTHERMAL ENERGY Drilling for seawater

    E-Print Network [OSTI]

    DRILLED HYDROTHERMAL ENERGY Drilling for seawater An "ALL of the ABOVE" Approach to Ocean Thermal-Arsène d'Arsonval in 1881 conceptualized producing electricity from ocean temperature difference DRILLED HYDROTHERMAL ENERGY BACKGROUND #12;DRILLED HYDROTHERMAL ENERGY BACKGROUND French Inventor Georges Claude

  9. Washington Environmental Permit Handbook - Geothermal Drilling Permit |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown ofNationwide PermitInformationIsland: Energy ResourcesProcess |Open Energy

  10. Salt Wells Geothermal Exploratory Drilling Program EA

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to:WY)

  11. Alpine Geothermal Drilling | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place: Wayne,Energy Information JumpCore Complex Of

  12. Geothermal Energy

    SciTech Connect (OSTI)

    Steele, B.C.; Harman, G.; Pitsenbarger, J. [eds.] [eds.

    1996-02-01T23:59:59.000Z

    Geothermal Energy Technology (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production.

  13. Proceedings World Geothermal Congress 2010 Bali, Indonesia, 25-29 April 2010

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Proceedings World Geothermal Congress 2010 Bali, Indonesia, 25-29 April 2010 1 3D-hydromechanical Behavior of a Stimulated Fractured Rock Mass Xavier Rachez and Sylvie Gentier BRGM, Geothermal Department) were drilled down to 5 km depths. Heat is extracted from this geothermal borehole triplet by injecting

  14. Geothermal energy geopressure subprogram

    SciTech Connect (OSTI)

    Not Available

    1981-02-01T23:59:59.000Z

    The proposed action will consist of drilling one geopressured-geothermal resource fluid well for intermittent production testing over the first year of the test. During the next two years, long-term testing of 40,000 BPD will be flowed. A number of scenarios may be implemented, but it is felt that the total fluid production will approximate 50 million barrels. The test well will be drilled with a 22 cm (8.75 in.) borehole to a total depth of approximately 5185 m (17,000 ft). Up to four disposal wells will provide disposal of the fluid from the designated 40,000 BPD test rate. The following are included in this assessment: the existing environment; probable environmental impacts-direct and indirect; probable cumulative and long-term environmental impacts; accidents; coordination with federal, state, regional, and local agencies; and alternative actions. (MHR)

  15. Industrial food processing and space heating with geothermal heat. Final report, February 16, 1979-August 31, 1982

    SciTech Connect (OSTI)

    Kunze, J.F.; Marlor, J.K.

    1982-08-01T23:59:59.000Z

    A competitive aware for a cost sharing program was made to Madison County, Idaho to share in a program to develop moderate-to-low temperature geothermal energy for the heating of a large junior college, business building, public shcools and other large buildings in Rexburg, Idaho. A 3943 ft deep well was drilled at the edge of Rexburg in a region that had been probed by some shallower test holes. Temperatures measured near the 4000 ft depth were far below what was expected or needed, and drilling was abandoned at that depth. In 1981 attempts were made to restrict downward circulation into the well, but the results of this effort yielded no higher temperatures. The well is a prolific producer of 70/sup 0/F water, and could be used as a domestic water well.

  16. Representative well models for eight geothermal-resource areas

    SciTech Connect (OSTI)

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

    1983-02-01T23:59:59.000Z

    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.

  17. GRC Workshop: The Power of the National Geothermal Data System

    Office of Energy Efficiency and Renewable Energy (EERE)

    Drilling Down: How Legacy and New Research Data Can Advance Geothermal Development—The Power of the National Geothermal Data System (NGDS) A workshop at the Geothermal Resources Council Annual Meeting in Las Vegas, Nevada Abstract: The National Geothermal Data System's (NGDS) launch in 2014 will provide open access to millions of datasets, sharing technical geothermal-relevant data across the geosciences to propel geothermal development and production forward. By aggregating findings from the Energy Department's RD&D projects and consistent, reliable geological and geothermal information from all 50 states, this free, interactive tool can shorten project development timelines and facilitate scientific discovery and best practices. Stop by our workshop for an overview of how your company can benefit from implementing, and participating in this open-source based, distributed network. To register for the GRC Annual Meeting, visit the GRC Annual Meeting and GEA Geothermal Energy Expo event website.

  18. Drill string enclosure

    DOE Patents [OSTI]

    Jorgensen, D.K.; Kuhns, D.J.; Wiersholm, O.; Miller, T.A.

    1993-03-02T23:59:59.000Z

    The drill string enclosure consists of six component parts, including; a top bracket, an upper acrylic cylinder, an acrylic drill casing guide, a lower acrylic cylinder, a bottom bracket, and three flexible ducts. The upper acrylic cylinder is optional based upon the drill string length. The drill string enclosure allows for an efficient drill and sight operation at a hazardous waste site.

  19. HP-41CV applied drilling engineering manual

    SciTech Connect (OSTI)

    Chenevert, M.; Williams, F.; Hekimian, H.

    1983-01-01T23:59:59.000Z

    Contents of this manual are as follows: average diameter of an open hole; pump cycle, pump factor, and annulus capacity; drilling-time and penetration rate predictions; nozzle selection; direction well survey; viscosity of drilling fluids; barite requirements with solids dilution; solids analysis and recommended flow properties; evaluation of hydrocyclones; frictional pressure loss; surge and swab pressures; pressure and average density of a gas column; cement additive requirements; kick tolerance, severity, length and density; and pump pressure schedule for well control operations.

  20. Stanford Geothermal Workshop - Geothermal Technologies Office...

    Broader source: Energy.gov (indexed) [DOE]

    by Geothermal Technologies Director Doug Hollett at the Stanford Geothermal Workshop on February 11-13, 2013. stanford2013hollett.pdf More Documents & Publications Geothermal...

  1. Assessment of the geothermal resources of Kansas. Final report

    SciTech Connect (OSTI)

    Steeples, D.W.; Stavnes, S.A.

    1982-06-01T23:59:59.000Z

    The following regional geological and geophysical studies are reported: establishment of a geothermal gradient data base from approximately 45,000 bottom hole temperatures recorded from well logs and interpretation of this data in terms of regional geology and establishment and interpretation of a second data base of geothermal gradients from thermal logging data from 144 holes of opportunity in the state. (MHR)

  2. Computational Approach to Photonic Drilling of Silicon Carbide

    SciTech Connect (OSTI)

    Samant, Anoop N [University of Tennessee, Knoxville (UTK); Daniel, Claus [ORNL; Chand, Ronald H [ORNL; Blue, Craig A [ORNL; Dahotre, Narendra B [University of Tennessee, Knoxville (UTK)

    2009-01-01T23:59:59.000Z

    The ability of lasers to carry out drilling processes in silicon carbide ceramic was investigated in this study. A JK 701 pulsed Nd:YAG laser was used for drilling through the entire depth of silicon carbide plates of different thicknesses. The laser parameters were varied in different combinations for a well controlled drilling through the entire thickness of the SiC plates. A drilling model incorporating effects of various physical phenomena such as decomposition, evaporation induced recoil pressure, and surface tension was developed. Such comprehensive model was capable of advance prediction of the energy and time required for drilling a hole through any desired depth of material.

  3. Validation of Innovative Exploration Technologies for Newberry Volcano: Drill Site Location Map 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    Newberry project drill site location map 2010. Once the exploration mythology is validated, it can be applied throughout the Cascade Range and elsewhere to locate and develop “blind” geothermal resources.

  4. Oregon: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Justus, D.; Basescu, N.; Bloomquist, R.G.; Higbee, C.; Simpson, S.

    1980-06-01T23:59:59.000Z

    A brief overview is given of the geological characteristics of each region of the state as they relate to potential geothermal development. Those exploration methods which can lead to the siting of a deep exploration well are described. Requirements and techniques needed for drilling deeper higher temperature exploration and production wells are presented. Electrical generation, direct utilization, and indirect utilization are reviewed. Economic factors of direct use projects are presented. A general guide to the regulatory framework affecting geothermal energy development is provided. The general steps necessary to gain access to explore, develop, distribute, and use geothermal resources are outlined. (MHR)

  5. Alaska: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Basescu, N.; Bloomquist, R.G.; Higbee, C.; Justus, D.; Simpson, S.

    1980-06-01T23:59:59.000Z

    A brief overview is given of the geological characteristics of each region of the state as they relate to potential geothermal development. Those exploration methods which can lead to the siting of a deep exploration well are described. Requirements and techniques needed for drilling deeper higher temperature exploration and production wells are presented. Electrical generation, direct utilization, and indirect utilization are reviewed. Economic factors of direct use projects are presented. A general guide to the regulatory framework affecting geothermal energy development is provided. The general steps necessary to gain access to explore, develop, distribute, and use geothermal resources are outlined. (MHR)

  6. Washington: a guide to geothermal energy development

    SciTech Connect (OSTI)

    Bloomquist, R.G.; Basescu, N.; Higbee, C.; Justus, D.; Simpson, S.

    1980-01-01T23:59:59.000Z

    A brief overview is given of the geological characteristics of each region of the state as they relate to potential geothermal development. Those exploration methods which can lead to the siting of a deep exploration well are described. Requirements and techniques needed for drilling deeper higher temperature exploration and production wells are presented. Electrical generation, direct utilization, and indirect utilization are reviewed. Economic factors of direct use projects are presented. A general guide to the regulatory framework affecting geothermal energy development is provided. The general steps necessary to gain access to explore, develop, distribute, and use geothermal resources are outlined. (MHR)

  7. Ice Drilling Gallonmilkjugs

    E-Print Network [OSTI]

    Saffman, Mark

    Ice Drilling Materials · Gallonmilkjugs · Syringes,largeand small · Pitchers · Spraybottles · 13x9? ·Isitbettertosquirtthewaterslowlyorasquicklyaspossible? ·Doestherateatwhichyousquirtthewaterchangethediameteroftheholes? ·Doesthetypeof`drill

  8. Drilling optimization using drilling simulator software

    E-Print Network [OSTI]

    Salas Safe, Jose Gregorio

    2004-09-30T23:59:59.000Z

    the results of using drilling simulator software called Drilling Optimization Simulator (DROPS®) in the evaluation of the Aloctono block, in the Pirital field, eastern Venezuela. This formation is characterized by very complex geology, containing faulted...

  9. Geothermal Heat Flow and Existing Geothermal Plants | Department...

    Energy Savers [EERE]

    Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Plants With plants in development. Click...

  10. Characterization of the geothermal resource at Lackland AFB, San Antonio, Texas. Phase I report

    SciTech Connect (OSTI)

    Lawford, T.W.; Malone, C.R.; Allman, D.W.; Zeisloft, J.; Foley, D.

    1983-06-01T23:59:59.000Z

    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.

  11. Optimizing drilling performance using a selected drilling fluid

    DOE Patents [OSTI]

    Judzis, Arnis (Salt Lake City, UT); Black, Alan D. (Coral Springs, FL); Green, Sidney J. (Salt Lake City, UT); Robertson, Homer A. (West Jordan, UT); Bland, Ronald G. (Houston, TX); Curry, David Alexander (The Woodlands, TX); Ledgerwood, III, Leroy W. (Cypress, TX)

    2011-04-19T23:59:59.000Z

    To improve drilling performance, a drilling fluid is selected based on one or more criteria and to have at least one target characteristic. Drilling equipment is used to drill a wellbore, and the selected drilling fluid is provided into the wellbore during drilling with the drilling equipment. The at least one target characteristic of the drilling fluid includes an ability of the drilling fluid to penetrate into formation cuttings during drilling to weaken the formation cuttings.

  12. Deep Drilling Basic Research: Volume 5 - System Evaluations. Final Report, November 1988--August 1990

    SciTech Connect (OSTI)

    None

    1990-06-01T23:59:59.000Z

    This project is aimed at decreasing the costs and increasing the efficiency of drilling gas wells in excess of 15,000 feet. This volume presents a summary of an evaluation of various drilling techniques. Drilling solutions were compared quantitatively against typical penetration rates derived from conventional systems. A qualitative analysis measured the impact of a proposed system on the drilling industry. The evaluations determined that the best candidates f o r improving the speed and efficiency of drilling deep gas wells include: PDC/TSD bits, slim-hole drilling, roller-cone bits, downhole motors, top-driven systems, and coiled-tubing drilling.

  13. Field testing advanced geothermal turbodrill (AGT). Phase 1 final report

    SciTech Connect (OSTI)

    Maurer, W.C.; Cohen, J.H.

    1999-06-01T23:59:59.000Z

    Maurer Engineering developed special high-temperature geothermal turbodrills for LANL in the 1970s to overcome motor temperature limitations. These turbodrills were used to drill the directional portions of LANL`s Hot Dry Rock Geothermal Wells at Fenton Hill, New Mexico. The Hot Dry Rock concept is to drill parallel inclined wells (35-degree inclination), hydraulically fracture between these wells, and then circulate cold water down one well and through the fractures and produce hot water out of the second well. At the time LANL drilled the Fenton Hill wells, the LANL turbodrill was the only motor in the world that would drill at the high temperatures encountered in these wells. It was difficult to operate the turbodrills continuously at low speed due to the low torque output of the LANL turbodrills. The turbodrills would stall frequently and could only be restarted by lifting the bit off bottom. This allowed the bit to rotate at very high speeds, and as a result, there was excessive wear in the bearings and on the gauge of insert roller bits due to these high rotary speeds. In 1998, Maurer Engineering developed an Advanced Geothermal Turbodrill (AGT) for the National Advanced Drilling and Excavation Technology (NADET) at MIT by adding a planetary speed reducer to the LANL turbodrill to increase its torque and reduce its rotary speed. Drilling tests were conducted with the AGT using 12 1/2-inch insert roller bits in Texas Pink Granite. The drilling tests were very successful, with the AGT drilling 94 ft/hr in Texas Pink Granite compared to 45 ft/hr with the LANL turbodrill and 42 ft/hr with a rotary drill. Field tests are currently being planned in Mexico and in geothermal wells in California to demonstrate the ability of the AGT to increase drilling rates and reduce drilling costs.

  14. Conoco cuts North Sea drilling time by 40%

    SciTech Connect (OSTI)

    Shute, J.; Alldredge, G.

    1982-07-01T23:59:59.000Z

    The record-breaking Murchison platform has slashed development drilling time by an average of 20 days and in the process has attracted the interest of oil men over the world. This article details each aspect of the operation how the rig was modified for speed, mud and casing programs and how they were changed, computer-aided MWD directional program, special conductor pipe and the way straight-hole turbo drilling complemented conventional rotary drilling.

  15. Geothermal energy for American Samoa

    SciTech Connect (OSTI)

    Not Available

    1980-03-01T23:59:59.000Z

    The geothermal commercialization potential in American Samoa was investigated. With geothermal energy harnessed in American Samoa, a myriad of possibilities would arise. Existing residential and business consumers would benefit from reduced electricity costs. The tuna canneries, demanding about 76% of the island's process heat requirements, may be able to use process heat from a geothermal source. Potential new industries include health spas, aquaculture, wood products, large domestic and transhipment refrigerated warehouses, electric cars, ocean nodule processing, and a hydrogen economy. There are no territorial statutory laws of American Samoa claiming or reserving any special rights (including mineral rights) to the territorial government, or other interests adverse to a land owner, for subsurface content of real property. Technically, an investigation has revealed that American Samoa does possess a geological environment conducive to geothermal energy development. Further studies and test holes are warranted.

  16. Geothermal progress monitor: Report No. 10

    SciTech Connect (OSTI)

    Not Available

    1987-07-01T23:59:59.000Z

    This issue synthesizes information on all aspects of geothermal development in this country and abroad to permit identification and quantification of trends in the use of this source of energy. The contents include: (1) the Federal Beat; (2) The Industry Scene; (3) Financing; (4) Development Status; (5) Leasing and Drilling; (6) State and Local; (7) International; and (8) Technology Transfer. (ACR)

  17. Geothermal Reservoir Well Stimulation Program: technology transfer

    SciTech Connect (OSTI)

    Not Available

    1980-05-01T23:59:59.000Z

    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)

  18. Scientific Drilling at Sulphur Springs, Valles Caldera, New Mexico...

    Open Energy Info (EERE)

    navigation, search OpenEI Reference LibraryAdd to library Journal Article: Scientific Drilling at Sulphur Springs, Valles Caldera, New Mexico- Core Hole VC-2A Abstract A scientific...

  19. Geothermal: News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    News Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New Hot Docs News Related Links News DOE...

  20. Geothermal: Publications

    Office of Scientific and Technical Information (OSTI)

    Influences on Geochemical Temperature Indicators: Final Report Earl Mattson ; Robert Smith ; Yoshiko Fujita ; et.al. INLEXT-14-33959 2015 04 07 2015 Mar 01 Deep Geothermal:...

  1. Geothermal energy

    SciTech Connect (OSTI)

    Renner, J.L. [Idaho National Engineering Laboratory, Idaho Fall, ID (United States); Reed, M.J. [Dept. of Energy, Washington, DC (United States)

    1993-12-31T23:59:59.000Z

    Use of geothermal energy (heat from the earth) has a small impact on the environmental relative to other energy sources; avoiding the problems of acid rain and greenhouse emissions. Geothermal resources have been utilized for centuries. US electrical generation began at The Geysers, California in 1960 and is now about 2300 MW. The direct use of geothermal heat for industrial processes and space conditioning in the US is about 1700 MW of thermal energy. Electrical production occurs in the western US and direct uses are found throughout the US. Typical geothermal power plants produce less than 5% of the CO{sub 2} released by fossil plants. Geothermal plants can now be configured so that no gaseous emissions are released. Sulfurous gases are effectively removed by existing scrubber technology. Potentially hazardous elements produced in geothermal brines are injected back into the producing reservoir. Land use for geothermal wells, pipelines, and power plants is small compared to land use for other extractive energy sources like oil, gas, coal, and nuclear. Per megawatt produced, geothermal uses less than one eighth the land that is used by a typical coal mine and power plant system. Geothermal development sites often co-exist with agricultural land uses like crop production or grazing.

  2. Federal Geothermal Research Program Update Fiscal Year 1998

    SciTech Connect (OSTI)

    Keller, J.G.

    1999-05-01T23:59:59.000Z

    This report reviews the specific objectives, status, and accomplishments of DOE's Geothermal Research Program for Fiscal Year 1998. The Exploration Technology research area focuses on developing instruments and techniques to discover hidden hydrothermal systems and to expose the deep portions of known systems. The Reservoir Technology research combines laboratory and analytical investigations with equipment development and field testing to establish practical tools for resource development and management for both hydrothermal and hot dry rock reservoirs. The Drilling Technology projects focus on developing improved, economic drilling and completion technology for geothermal wells. The Conversion Technology research focuses on reducing costs and improving binary conversion cycle efficiency, to permit greater use of the more abundant moderate-temperature geothermal resource, and on the development of materials that will improve the operating characteristics of many types of geothermal energy equipment. Direct use research covers the direct use of geothermal energy sources for applications in other than electrical production.

  3. DRILLING MACHINES GENERAL INFORMATION

    E-Print Network [OSTI]

    Gellman, Andrew J.

    TC 9-524 Chapter 4 DRILLING MACHINES GENERAL INFORMATION PURPOSE This chapter contains basic information pertaining to drilling machines. A drilling machine comes in many shapes and sizes, from small hand-held power drills to bench mounted and finally floor-mounted models. They can perform operations

  4. INTEGRATED OCEAN DRILLING PROGRAM 2011 OCEAN DRILLING CITATION REPORT

    E-Print Network [OSTI]

    INTEGRATED OCEAN DRILLING PROGRAM 2011 OCEAN DRILLING CITATION REPORT covering citations related to the Deep Sea Drilling Project, Ocean Drilling Program, and Integrated Ocean Drilling Program from Geo Drilling Program Publication Services September 2011 #12;OVERVIEW OF THE OCEAN DRILLING CITATION DATABASE

  5. Ground Magnetics At Neal Hot Springs Geothermal Area (U.S. Geothermal...

    Open Energy Info (EERE)

    Hot Springs. Data from these surveys will be integrated with older data from Chevron Minerals 1979 drill hole. Notes At the time of this report the magnetic survey had not been...

  6. Pueblo of Jemez Geothermal Feasibility Study Fianl Report

    SciTech Connect (OSTI)

    S.A. Kelley; N. Rogers; S. Sandberg; J. Witcher; J. Whittier

    2005-03-31T23:59:59.000Z

    This project assessed the feasibility of developing geothermal energy on the Pueblo of Jemez, with particular attention to the Red Rocks area. Geologic mapping of the Red Rocks area was done at a scale of 1:6000 and geophysical surveys identified a potential drilling target at a depth of 420 feet. The most feasible business identified to use geothermal energy on the reservation was a greenhouse growing culinary and medicinal herbs. Space heating and a spa were identified as two other likely uses of geothermal energy at Jemez Pueblo. Further geophysical surveys are needed to identify the depth to the Madera Limestone, the most likely host for a major geothermal reservoir.

  7. Design of a diesel exhaust-gas purification system for inert-gas drilling

    SciTech Connect (OSTI)

    Caskey, B.C.

    1982-01-01T23:59:59.000Z

    To combat the serious oxygen corrosion of drill pipe when a low density drilling fluid (air or mist) is used in geothermal drilling, a system has been designed that produces an inert gas (essentially nitrogen) to be substituted for air. The system fits on three flatbed trailers, is roadable and produces 2000 scfm of gas. The projected cost for gas is slightly less than $2.00 per thousand standard cubic feet.

  8. Geothermal Energy

    SciTech Connect (OSTI)

    Steele, B.C.; Pichiarella, L.S. [eds.; Kane, L.S.; Henline, D.M.

    1995-01-01T23:59:59.000Z

    Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past two months.

  9. Laboratory testing and modeling to evaluate perfluorocarbon compounds as tracers in geothermal systems

    SciTech Connect (OSTI)

    Reimus, Paul W [Los Alamos National Laboratory

    2011-01-21T23:59:59.000Z

    The thermal stability and adsorption characteristics of three perfluorinated hydrocarbon compounds were evaluated under geothermal conditions to determine the potential to use these compounds as conservative or thermally-degrading tracers in Engineered (or Enhanced) Geothermal Systems (EGS). The three compounds tested were perfluorodimethyl-cyclobutane (PDCB), perfluoromethylcyclohexane (PMCH), and perfluorotrimethylcyclohexane (PTCH), which are collectively referred to as perfluorinated tracers, or PFTs. Two sets of duplicate tests were conducted in batch mode in gold-bag reactors, with one pair of reactors charged with a synthetic geothermal brine containing the PFTs and a second pair was charged with the brine-PFT mixture plus a mineral assemblage chosen to be representative of activated fractures in an EGS reservoir. A fifth reactor was charged with deionized water containing the three PFTs. The experiments were conducted at {approx}100 bar, with temperatures ranging from 230 C to 300 C. Semi-analytical and numerical modeling was also conducted to show how the PFTs could be used in conjunction with other tracers to interrogate surface area to volume ratios and temperature profiles in EGS reservoirs. Both single-well and cross-hole tracer tests are simulated to illustrate how different suites of tracers could be used to accomplish these objectives. The single-well tests are especially attractive for EGS applications because they allow the effectiveness of a stimulation to be evaluated without drilling a second well.

  10. Determining root causes of drilling problems by combining cases and general knowledge

    E-Print Network [OSTI]

    Aamodt, Agnar

    Determining root causes of drilling problems by combining cases and general knowledge Samad well drilling is a complex process which frequently leads to operational problems. In order to deal. An important problem in drilling is hole cleaning, in which a high number of observed parameters and other

  11. Gas investigation for laser drilling Matthieu Schneidera), Laurent Berthe, Rmy Fabbro, Maryse Muller, and Mariette Nivard

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Gas investigation for laser drilling Matthieu Schneidera), Laurent Berthe, RĂ©my Fabbro, Maryse L'HĂ´pital 75013 Paris, France This article deals with the gas effect on percussion laser drilling and facilitates the deposition of metallic liquid around the front surface holes. Key words: laser drilling

  12. Sandia National Laboratories: Geothermal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Geothermal Sandia Wins DOE Geothermal Technologies Office Funding Award On December 15, 2014, in Advanced Materials Laboratory, Capabilities, Energy, Facilities, Geothermal,...

  13. Drilling Report- First CSDP (Continental Scientific Drilling...

    Open Energy Info (EERE)

    the hydrogeochemistry of a subsurface geothermal outflow zone of the caldera near the source of convective upflow, (2) to obtain structural and stratigraphic information from...

  14. California Geothermal Energy Collaborative

    E-Print Network [OSTI]

    California Geothermal Energy Collaborative Geothermal Education and Outreach Guide of California Davis, and the California Geothermal Energy Collaborative. We specifically would like to thank support of the California Geothermal Energy Collaborative. We also thank Charlene Wardlow of Ormat for her

  15. Geothermal direct use engineering and design guidebook

    SciTech Connect (OSTI)

    Lienau, P.J.; Lunis, B.C. (eds.)

    1991-01-01T23:59:59.000Z

    The Geothermal Direct Use Engineering and Design Guidebook is designed to be a comprehensive, thoroughly practical reference guide for engineers and designers of direct heat projects. These projects could include the conversion of geothermal energy into space heating and cooling of buildings, district heating, greenhouse heating, aquaculture and industrial processing. The Guidebook is directed at understanding the nature of geothermal resources and the exploration of the resources, fluid sampling techniques, drilling, and completion of geothermal wells through well testing, and reservoir evaluation. It presents information useful to engineers on the specification of equipment including well pumps, piping, heat exchangers, space heating equipment, heat pumps and absorption refrigeration. A compilation of current information about greenhouse aquaculture and industrial applications is included together with a discussion of engineering cost analysis, regulation requirements, and environmental consideration. The purpose of the Guidebook is to provide an integrated view for the development of direct use projects for which there is a very large potential in the United States.

  16. Development of a geothermal acoustic borehole televiewer

    SciTech Connect (OSTI)

    Heard, F.E.; Bauman, T.J.

    1983-08-01T23:59:59.000Z

    Most geothermal wells are drilled in hard rock formations where fluid flow is through systems of open fractures. Productivity of these wells is usually determined by the extent of intersection of the wellbore with the fracture system. A need exists for fracture mapping methods and tools which can operate in a geothermal environment. In less hostile environments, the acoustic borehole televiewer has been shown to be a useful tool for determining location, orientation, and characterization of fractures as they intersect the borehole and for general wellbore and casing inspection. The development conducted at Sandia National Laboratories to adapt an acoustic borehole televiewer for operation in a geothermal environment is described. The modified instrument has been successfully tested at temperatures as high as 280/sup 0/C and pressures up to 5000 psi, and used successfully to map fractures and casing damage in geothermal wells.

  17. Geothermal direct use engineering and design guidebook

    SciTech Connect (OSTI)

    Bloomquist, R.G.; Culver, G.; Ellis, P.F.; Higbee, C.; Kindle, C.; Lienau, P.J.; Lunis, B.C.; Rafferty, K.; Stiger, S.; Wright, P.M.

    1989-03-01T23:59:59.000Z

    The Geothermal Direct Use Engineering and Design Guidebook is designed to be a comprehensive, thoroughly practical reference guide for engineers and designers of direct heat projects. These projects could include the conversion of geothermal energy into space heating cooling of buildings, district heating, greenhouse heating, aquaculture and industrial processing. The Guidebook is directed at understanding the nature of geothermal resources and the exploration of these resources, fluid sampling techniques, drilling, and completion of geothermal wells through well testing, and reservoir evaluation. It presents information useful to engineers on the specification of equipment including well pumps, piping, heat exchangers, space heating equipment, heat pumps and absorption refrigeration. A compilation of current information about greenhouse, aquaculture and industrial applications is included together with a discussion of engineering cost analysis, regulation requirements, and environmental considerations. The purpose of the Guidebook is to provide an integrated view for the development of direct use projects for which there is a very potential in the United States.

  18. Geothermal Brief: Market and Policy Impacts Update

    SciTech Connect (OSTI)

    Speer, B.

    2012-10-01T23:59:59.000Z

    Utility-scale geothermal electricity generation plants have generally taken advantage of various government initiatives designed to stimulate private investment. This report investigates these initiatives to evaluate their impact on the associated cost of energy and the development of geothermal electric generating capacity using conventional hydrothermal technologies. We use the Cost of Renewable Energy Spreadsheet Tool (CREST) to analyze the effects of tax incentives on project economics. Incentives include the production tax credit, U.S. Department of Treasury cash grant, the investment tax credit, and accelerated depreciation schedules. The second half of the report discusses the impact of the U.S. Department of Energy's (DOE) Loan Guarantee Program on geothermal electric project deployment and possible reasons for a lack of guarantees for geothermal projects. For comparison, we examine the effectiveness of the 1970s DOE drilling support programs, including the original loan guarantee and industry-coupled cost share programs.

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

    SciTech Connect (OSTI)

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

    1983-12-15T23:59:59.000Z

    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.

  20. Geothermal technology publications and related reports: A bibliography, January 1986 through December 1987

    SciTech Connect (OSTI)

    Tolendino, C.D. (ed.)

    1988-08-01T23:59:59.000Z

    Sandia publications resulting from DOE programs in Geothermal Technologies, Magma Energy and Continental Scientific Drilling are listed for reference. The RandD includes borehole-related technologies, in situ processes, and wellbore diagnostics.

  1. Geophysical imaging methods for analysis of the Krafla Geothermal Field, NE Iceland

    E-Print Network [OSTI]

    Parker, Beatrice Smith

    2012-01-01T23:59:59.000Z

    Joint geophysical imaging techniques have the potential to be reliable methods for characterizing geothermal sites and reservoirs while reducing drilling and production risks. In this study, we applied a finite difference ...

  2. Discovery and geology of the Desert Peak geothermal field: a case history. Bulletin 97

    SciTech Connect (OSTI)

    Benoit, W.R.; Hiner, J.E.; Forest, R.T.

    1982-09-01T23:59:59.000Z

    A case history of the exploration, development (through 1980), and geology of the Desert Peak geothermal field is presented. Sections on geochemistry, geophysics, and temperature-gradient drilling are included.

  3. 2007 OCEAN DRILLING CITATION REPORT Covering Deep Sea Drilling Project-

    E-Print Network [OSTI]

    2007 OCEAN DRILLING CITATION REPORT Covering Deep Sea Drilling Project- and Ocean Drilling Program Services on behalf of the Integrated Ocean Drilling Program September 2007 #12;#12;OVERVIEW OF THE OCEAN DRILLING CITATION DATABASE The Ocean Drilling Citation Database, which in February 2007 contained

  4. Core Drilling Demonstration

    Broader source: Energy.gov [DOE]

    Tank Farms workers demonstrate core drilling capabilities for Hanford single-shell tanks. Core drilling is used to determine the current condition of each tank to assist in the overall assessment...

  5. Counter-Rotating Tandem Motor Drilling System

    SciTech Connect (OSTI)

    Kent Perry

    2009-04-30T23:59:59.000Z

    Gas Technology Institute (GTI), in partnership with Dennis Tool Company (DTC), has worked to develop an advanced drill bit system to be used with microhole drilling assemblies. One of the main objectives of this project was to utilize new and existing coiled tubing and slimhole drilling technologies to develop Microhole Technology (MHT) so as to make significant reductions in the cost of E&P down to 5000 feet in wellbores as small as 3.5 inches in diameter. This new technology was developed to work toward the DOE's goal of enabling domestic shallow oil and gas wells to be drilled inexpensively compared to wells drilled utilizing conventional drilling practices. Overall drilling costs can be lowered by drilling a well as quickly as possible. For this reason, a high drilling rate of penetration is always desired. In general, high drilling rates of penetration (ROP) can be achieved by increasing the weight on bit and increasing the rotary speed of the bit. As the weight on bit is increased, the cutting inserts penetrate deeper into the rock, resulting in a deeper depth of cut. As the depth of cut increases, the amount of torque required to turn the bit also increases. The Counter-Rotating Tandem Motor Drilling System (CRTMDS) was planned to achieve high rate of penetration (ROP) resulting in the reduction of the drilling cost. The system includes two counter-rotating cutter systems to reduce or eliminate the reactive torque the drillpipe or coiled tubing must resist. This would allow the application of maximum weight-on-bit and rotational velocities that a coiled tubing drilling unit is capable of delivering. Several variations of the CRTDMS were designed, manufactured and tested. The original tests failed leading to design modifications. Two versions of the modified system were tested and showed that the concept is both positive and practical; however, the tests showed that for the system to be robust and durable, borehole diameter should be substantially larger than that of slim holes. As a result, the research team decided to complete the project, document the tested designs and seek further support for the concept outside of the DOE.

  6. Geothermal innovative technologies catalog

    SciTech Connect (OSTI)

    Kenkeremath, D. (ed.)

    1988-09-01T23:59:59.000Z

    The technology items in this report were selected on the basis of technological readiness and applicability to current technology transfer thrusts. The items include technologies that are considered to be within 2 to 3 years of being transferred. While the catalog does not profess to be entirely complete, it does represent an initial attempt at archiving innovative geothermal technologies with ample room for additions as they occur. The catalog itself is divided into five major functional areas: Exploration; Drilling, Well Completion, and Reservoir Production; Materials and Brine Chemistry; Direct Use; and Economics. Within these major divisions are sub-categories identifying specific types of technological advances: Hardware; Software; Data Base; Process/Procedure; Test Facility; and Handbook.

  7. Geothermal Data Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Geothermal Technologies Office (GTO) has designed and tested a comprehensive, federated information system that will make geothermal data widely available. This new National Geothermal Data System (NGDS) will provide access to all types of geothermal data to enable geothermal analysis and widespread public use, thereby reducing the risk of geothermal energy development.

  8. EA-1925: Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon

    Broader source: Energy.gov [DOE]

    This EA evaluates Ormat Nevada, Inc.’s (Ormat’s) proposed geothermal project consists of drilling up to 16 wells for geothermal exploration approximately 70 miles southeast of Bend, Oregon and 50 miles northwest of Burns, Oregon just south of U.S. Highway 20. The proposed project includes three distinct drilling areas. Up to three wells would be drilled on lands managed by the Bureau of Land Management (BLM) Prineville District (Mahogany), up to ten wells would be drilled on lands managed by the BLM Burns District (Midnight Point), and up to three wells would be drilled on private land located adjacent to the federal geothermal leases west of Glass Butte (Private Lands). DOE funding would be associated with three of the sixteen proposed wells. BLM is the lead agency and DOE is participating as a cooperating agency.

  9. Geothermal br Resource br Area Geothermal br Resource br Area...

    Open Energy Info (EERE)

    Zone Mesozoic granite granodiorite Aurora Geothermal Area Aurora Geothermal Area Walker Lane Transition Zone Geothermal Region MW Beowawe Hot Springs Geothermal Area Beowawe Hot...

  10. Geothermal: Sponsored by OSTI -- State geothermal commercialization...

    Office of Scientific and Technical Information (OSTI)

    State geothermal commercialization programs in seven Rocky Mountain states. Semiannual progress report, July-December 1980 Geothermal Technologies Legacy Collection HelpFAQ | Site...

  11. Iceland Geothermal Conference 2013 - Geothermal Policies and...

    Broader source: Energy.gov (indexed) [DOE]

    Iceland Geothermal Conference presentation on March 7, 2013 by Chief Engineer Jay Nathwani of the U.S. Department of Energys Geothermal Technologies Office. icelandgeothermalco...

  12. SMU Geothermal Conference 2011 - Geothermal Technologies Program...

    Broader source: Energy.gov (indexed) [DOE]

    DOE Geothermal Technologies Program presentation at the SMU Geothermal Conference in June 2011. gtpsmuconferencereinhardt2011.pdf More Documents & Publications Low Temperature...

  13. Federal Geothermal Research Program Update Fiscal Year 2000

    SciTech Connect (OSTI)

    Renner, J.L.

    2001-08-15T23:59:59.000Z

    The Department of Energy's Geothermal Program serves two broad purposes: (1) to assist industry in overcoming near-term barriers by conducting cost-shared research and field verification that allows geothermal energy to compete in today's aggressive energy markets; and (2) to undertake fundamental research with potentially large economic payoffs. The four categories of work used to distinguish the research activities of the Geothermal Program during FY 2000 reflect the main components of real-world geothermal projects. These categories form the main sections of the project descriptions in this Research Update. Exploration Technology research focuses on developing instruments and techniques to discover hidden hydrothermal systems and to explore the deep portions of known systems. Research in geophysical and geochemical methods is expected to yield increased knowledge of hidden geothermal systems. Reservoir Technology research combines laboratory and analytical investigations with equipment development and field testing to establish practical tools for resource development and management for both hydrothermal reservoirs and enhanced geothermal systems. Research in various reservoir analysis techniques is generating a wide range of information that facilitates development of improved reservoir management tools. Drilling Technology focuses on developing improved, economic drilling and completion technology for geothermal wells. Ongoing research to avert lost circulation episodes in geothermal drilling is yielding positive results. Conversion Technology research focuses on reducing costs and improving binary conversion cycle efficiency, to permit greater use of the more abundant moderate-temperature geothermal resource, and on the development of materials that will improve the operating characteristics of many types of geothermal energy equipment. Increased output and improved performance of binary cycles will result from investigations in heat cycle research.

  14. Geothermal Progress Monitor. Report No. 18

    SciTech Connect (OSTI)

    NONE

    1996-12-31T23:59:59.000Z

    The near-term challenges of the US geothermal industry and its long-range potential are dominant themes in this issue of the US Department of Energy (DOE) Geothermal Progress Monitor which summarizes calendar-year 1996 events in geothermal development. Competition is seen as an antidote to current problems and a cornerstone of the future. Thus, industry's cost-cutting strategies needed to increase the competitiveness of geothermal energy in world markets are examined. For example, a major challenge facing the US industry today is that the sales contracts of independent producers have reached, or soon will, the critical stage when the prices utilities must pay them drop precipitously, aptly called the cliff. However, Thomas R. Mason, President and CEO of CalEnergy told the DOE 1996 Geothermal Program Review XIV audience that while some of his company's plants have ''gone over the cliff, the world is not coming to an end.'' With the imposition of severe cost-cutting strategies, he said, ''these plants remain profitable... although they have to be run with fewer people and less availability.'' The Technology Development section of the newsletter discusses enhancements to TOUGH2, the general purpose fluid and heat flow simulator and the analysis of drill cores from The Geysers, but the emphasis is on advanced drilling technologies.

  15. Hot Dry Rock; Geothermal Energy

    SciTech Connect (OSTI)

    None

    1990-01-01T23:59:59.000Z

    The commercial utilization of geothermal energy forms the basis of the largest renewable energy industry in the world. More than 5000 Mw of electrical power are currently in production from approximately 210 plants and 10 000 Mw thermal are used in direct use processes. The majority of these systems are located in the well defined geothermal generally associated with crustal plate boundaries or hot spots. The essential requirements of high subsurface temperature with huge volumes of exploitable fluids, coupled to environmental and market factors, limit the choice of suitable sites significantly. The Hot Dry Rock (HDR) concept at any depth originally offered a dream of unlimited expansion for the geothermal industry by relaxing the location constraints by drilling deep enough to reach adequate temperatures. Now, after 20 years intensive work by international teams and expenditures of more than $250 million, it is vital to review the position of HDR in relation to the established geothermal industry. The HDR resource is merely a body of rock at elevated temperatures with insufficient fluids in place to enable the heat to be extracted without the need for injection wells. All of the major field experiments in HDR have shown that the natural fracture systems form the heat transfer surfaces and that it is these fractures that must be for geothermal systems producing from naturally fractured formations provide a basis for directing the forthcoming but, equally, they require accepting significant location constraints on HDR for the time being. This paper presents a model HDR system designed for commercial operations in the UK and uses production data from hydrothermal systems in Japan and the USA to demonstrate the reservoir performance requirements for viable operations. It is shown that these characteristics are not likely to be achieved in host rocks without stimulation processes. However, the long term goal of artificial geothermal systems developed by systematic engineering procedures at depth may still be attained if high temperature sites with extensive fracturing are developed or exploited. [DJE -2005

  16. Thermal Gradient Holes At Breitenbush Hot Springs Area (Ingebritsen...

    Open Energy Info (EERE)

    (1993) Heat Flow From Four New Research Drill Holes In The Western Cascades, Oregon, Usa Additional References Retrieved from "http:en.openei.orgwindex.php?titleThermalGr...

  17. Parcperdue geopressure-geothermal project. Study a geopressured reservoir by drilling and producing a well in a limited geopressured water sand. Final technical report, September 28, 1979-December 31, 1983

    SciTech Connect (OSTI)

    Hamilton, J.R.; Stanley, J.G. (eds.) [eds.

    1984-01-15T23:59:59.000Z

    The behavior of geopressured reservoirs was investigated by drilling and producing a well in small, well defined, geopressured reservoir; and performing detailed pressure transient analysis together with geological, geophysical, chemical, and physical studies. The Dow-DOE L. R. Sweezy No. 1 well was drilled to a depth of 13,600 feet in Parcperdue field, just south of Lafayette, Louisiana, and began production in April, 1982. The production zone was a poorly consolidated sandstone which constantly produced sand into the well stream, causing damage to equipment and causing other problems. The amount of sand production was kept manageable by limiting the flow rate to below 10,000 barrels per day. Reservoir properties of size, thickness, depth, temperature, pressure, salinity, porosity, and permeability were close to predicted values. The reservoir brine was undersaturated with respect to gas, containing approximately 20 standard cubic feet of gas per barrel of brine. Shale dewatering either did not occur or was insignificant as a drive mechanism. Production terminated when the gravel-pack completion failed and the production well totally sanded in, February, 1983. Total production up to the sanding incident was 1.94 million barrels brine and 31.5 million standard cubic feet gas.

  18. Fairbanks Geothermal Energy Project Final Report

    SciTech Connect (OSTI)

    Karl, Bernie [CHSR,LLC Owner] [CHSR,LLC Owner

    2013-05-31T23:59:59.000Z

    The primary objective for the Fairbanks Geothermal Energy Project is to provide another source of base-load renewable energy in the Fairbanks North Star Borough (FNSB). To accomplish this, Chena Hot Springs Resort (Chena) drilled a re-injection well to 2700 feet and a production well to 2500 feet. The re-injection well allows a greater flow of water to directly replace the water removed from the warmest fractures in the geothermal reservoir. The new production will provide access to warmer temperature water in greater quantities.

  19. Hole cleaning requirements with seabed returns

    E-Print Network [OSTI]

    Nordt, David Paul

    1988-01-01T23:59:59.000Z

    of different non-Newtonian fluids 56 INTRODUCTION A drilling fluid is used for removing cuttings from the hole, controlling subsurface pressures, preventing caving-in of the formations, suspension of cuttings, weighting materials, and many other uses... of the hole. The drilling problems related to hole cleaning can occur at low as well as high annular velocities. Cuttings can travel no faster than the fluid in which they are transported; however, they can travel more slowly. Their fall (slip) rate...

  20. Expanding Geothermal Resource Utilization in Nevada through Directed Research and Public Outreach

    Broader source: Energy.gov [DOE]

    This project entails finding and assessing geothermal systems to: Increase geothermal development through research and outreach; Reduce risk in drill target selection, thus reducing project development costs; and Recent research includes development of shallow temperature surveys, seismic methods, aerial photography, field structural geology.

  1. Geological and geophysical analysis of Coso Geothermal Exploration...

    Open Energy Info (EERE)

    analysis of Coso Geothermal Exploration Hole No. 1 (CGEH-1), Coso Hot Springs KGRA, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geological...

  2. Geothermal Progress Monitor report No. 5. Progress report, June 1981

    SciTech Connect (OSTI)

    Not Available

    1981-01-01T23:59:59.000Z

    Updated information is presented on activities and progress in the areas of electric power plants, direct heat applications, deep well drilling, leasing of federal lands, legislative and regulatory actions, research and development, and others. Special attention is given in this report to 1980 highlights, particularly in the areas of electric and direct heat uses, drilling, and the Federal lands leasing program. This report also includes a summary of the DOE FY 1982 geothermal budget request to Congress.

  3. Geothermal development of the Madison group aquifer: a case study

    SciTech Connect (OSTI)

    Martinez, J.A.

    1981-01-01T23:59:59.000Z

    A geothermal well has been drilled at the St. Mary's Hospital in Pierre, South Dakota. The well is 2176 feet deep and artesian flows 375 gpm at 106/sup 0/F. The well is producing fluids from the Mississippian Madison Group, a sequence of carbonate rocks deposited over several western states. The project was funded to demonstrate the goethermal potential of this widespread aquifer. This case study describes the development of the project through geology, drilling, stimulation, and testing.

  4. Assessing geothermal energy potential in upstate New York. Final report

    SciTech Connect (OSTI)

    Hodge, D.S. [SUNY, Buffalo, NY (United States)

    1996-08-01T23:59:59.000Z

    The potential of geothermal energy for future electric power generation in New York State is evaluated using estimates of temperatures of geothermal reservoir rocks. Bottom hole temperatures from over 2000 oil and gas wells in the region were integrated into subsurface maps of the temperatures for specific geothermal reservoirs. The Theresa/Potsdam formation provides the best potential for extraction of high volumes of geothermal fluids. The evaluation of the Theresa/Potsdam geothermal reservoir in upstate New York suggests that an area 30 miles east of Elmira, New York has the highest temperatures in the reservoir rock. The Theresa/Potsdam reservoir rock should have temperatures about 136 {degrees}C and may have as much as 450 feet of porosity in excess of 8%. Estimates of the volumes of geothermal fluids that can be extracted are provided and environmental considerations for production from a geothermal well is discussed.

  5. The objectives for deep scientific drilling in Yellowstone National Park

    SciTech Connect (OSTI)

    Not Available

    1987-01-01T23:59:59.000Z

    The western area of the United Stated contains three young silicic calderas, all of which contain attractive targets for scientific drilling. Of the three, the Yellowstone caldera complex is the largest, has the most intense geothermal anomalies, and is the most seismically active. On the basis of scientific objectives alone. it is easily the first choice for investigating active hydrothermal processes. This report briefly reviews what is known about the geology of Yellowstone National Park and highlights unique information that could be acquired by research drilling only in Yellowstone. However, it is not the purpose of this report to recommend specific drill sites or to put forth a specific drilling proposal. 175 refs., 9 figs., 2 tabs.

  6. Superhard nanophase cutter materials for rock drilling applications

    SciTech Connect (OSTI)

    Voronov, O.; Tompa, G.; Sadangi, R.; Kear, B.; Wilson, C.; Yan, P.

    2000-06-23T23:59:59.000Z

    The Low Pressure-High Temperature (LPHT) System has been developed for sintering of nanophase cutter and anvil materials. Microstructured and nanostructured cutters were sintered and studied for rock drilling applications. The WC/Co anvils were sintered and used for development of High Pressure-High Temperature (HPHT) Systems. Binderless diamond and superhard nanophase cutter materials were manufactured with help of HPHT Systems. The diamond materials were studied for rock machining and drilling applications. Binderless Polycrystalline Diamonds (BPCD) have high thermal stability and can be used in geothermal drilling of hard rock formations. Nanophase Polycrystalline Diamonds (NPCD) are under study in precision machining of optical lenses. Triphasic Diamond/Carbide/Metal Composites (TDCC) will be commercialized in drilling and machining applications.

  7. Calculator program optimizes bit weight, rotary speed, reducing drilling cost

    SciTech Connect (OSTI)

    Simpson, M.A.

    1984-04-23T23:59:59.000Z

    Bit selection, bit weight, and rotary speed have repeatedly proven to be the most important and commonly overlooked alterable factors which control penetration rate, footage, and overall drilling cost. This is particularly true in offshore operations where drilling costs are highest and the greatest cost savings stand to be achieved through implementation of proven optimization techniques. The myth that bit weights and rotary speeds cannot be optimized in directional holes has hindered the industry from using this virtually cost-free method for reducing drilling cost. The use of optimized bit weights and rotary speeds in conjunction with minimum cost bit programs based on cost per foot analysis of previous bit runs in the area was implemented on a five-well platform in the Grand Isle Block 20 field, offshore Louisiana. Each of the directional wells was drilled substantially faster and cheaper than the discovery well, which was a straight hole. Average reductions in footage cost of 31.3%, based on daily operating cost of $30,000/day, and increase in average daily footage drilled of 45.2% were effected by ''collectively optimizing'' drilling performance. The ''Optimizer'' program is an HP-41CV adaptation of the Bourgoyne and Young drilling model. It was used to calculate the optimum bit weights and rotary speeds based on field drilling tests; historical bit and bearing wear data; and current operating conditions, cost, and constraints.

  8. Crosswell Imaging Technology & Advanced DSR Navigation for Horizontal Directional Drilling

    SciTech Connect (OSTI)

    Larry Stolarczyk

    2008-08-08T23:59:59.000Z

    The objective of Phase II is to develop and demonstrate real-time measurement-while-drilling (MWD) for guidance and navigation of drill strings during horizontal drilling operations applicable to both short and long holes. The end product of Phase II is a functional drill-string assembly outfitted with a commercial version of Drill String Radar (DSR). Project Objectives Develop and demonstrate a dual-phase methodology of in-seam drilling, imaging, and structure confirmation. This methodology, illustrated in Figure 1, includes: (1) Using RIM to image between drill holes for seam thickness estimates and in-seam structures detection. Completed, February 2005; and (2) Using DSR for real-time MWD guidance and navigation of drillstrings during horizontal drilling operations. Completed, November 2008. As of November 2008, the Phase II portion of Contract DE-FC26-04NT42085 is about 99% complete, including milestones and tasks original outlined as Phase II work. The one percent deficiency results from MSHA-related approvals which have yet to be granted (at the time of reporting). These approvals are pending and are do not negatively impact the scope of work or project objectives.

  9. System design and field results of closed loop guided directional drilling system

    SciTech Connect (OSTI)

    Calderoni, A.; Donati, F.; Ligrone, A. [AGIP S.p.A., Milan (Italy); Oppelt, J.; Ragnitz, D. [Baker Hughes INTEQ GmbH, Celle (Germany)

    1996-09-01T23:59:59.000Z

    A new family of automatic directional drilling tools has been introduced to the field. The development process started with an automated vertical drilling system, followed by a more generally applicable straight hole drilling device. Now a fully directional closed loop system has been established comprising a rotary steering device, a two-way communication link and an intelligent surface system. The downhole tool includes a modular electronic control and measurement system with directional and formation evaluation sensors and can operate at temperatures up to 185 C with full functionality. The paper presents system and tool design and reports about field results and experience in terms of performance, reliability, directional behavior etc. The vertical drilling system was a breakthrough in vertical drilling technology for the German deep drilling project, the straight hole drilling device has been successfully run in various oilfield applications in Europe. The fully directional system is looking forward for early field testing by the end of 1995.

  10. Geothermal Technologies Program Overview Presentation at Stanford...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Overview Presentation at Stanford Geothermal Workshop Geothermal Technologies Program Overview Presentation at Stanford Geothermal Workshop General overview of Geothermal...

  11. New oilfield air bit improves drilling economics in Appalachian Basin

    SciTech Connect (OSTI)

    Brannon, K.C.; Grimes, R.E. [Hughes Christensen Co., Houston, TX (United States); Vietmeier, W.R. [Hughes Christensen Co., Imperial, PA (United States)

    1994-12-31T23:59:59.000Z

    Petroleum exploration in the Appalachian Basin of the northeastern United States has traditionally relied on compressed air, rather than drilling fluid, for its circulating medium. When compared to drilling mud, compressed air provides such advantages as increased rates of penetration, longer bit life, decreased formation damage, no lost circulation and saves the expense associated with mud handling equipment. Throughout the 1970s and early 1980s, roller cone mining bits and surplus oilfield bits were used to drill these wells. While the cutting structures of mining bits were well-suited for air drilling, the open roller bearings invariably shortened the useful life of the bit, particularly when water was present in the hole. This paper will highlight the development of a new IADC Class 539Y oilfield roller cone bit that is establishing performance records in air drilling applications throughout the Appalachian Basin. Essentially, the latest generation evolved from a roller cone bit successfully introduced in 1985 that combined a specialized non-offset cutting structure with a premium oilfield journal bearing package. Since its introduction, several sizes and types of oilfield air bits have been developed that have continually decreased drilling costs through enhanced performance and reliability. The design and evolution of rock bit cutting structures and bearing packages for high-performance oilfield air drilling applications will be detailed. Laboratory drilling test data will demonstrate the difference in drilling efficiencies between air drilling and conventional fluid drilling. Case studies taken from throughout the Appalachian Basin will be presented to illustrate the improvements in cost per foot, penetration rate, total footage drilled, drilling hours, and bit dull grades.

  12. Department of Industrial Engineering Spring 2012 Project Name Quaker Chemical Effects of Tool Wear In Drilling of

    E-Print Network [OSTI]

    Demirel, Melik C.

    of Tool Wear In Drilling of Compacted Graphite Iron, Grey Cast Iron, and High Molybdenum Grey Cast Iron Quakercool (old fluid) does Approach 276 holes drilled and reamed in each metal with each fluid using a CNC machining center Flank wear area on drills measured Thrust and torque forces collected Measurements

  13. Microwave Drilling of Ceramic Thermal-Barrier Coatings Faculty of Engineering, Tel Aviv University, Ramat Aviv 69978, Israel

    E-Print Network [OSTI]

    Jerby, Eli

    Microwave Drilling of Ceramic Thermal-Barrier Coatings Eli Jerby Faculty of Engineering, Tel Aviv, Schenectady, New York 12301 The microwave drill is a novel process for creating shaped holes in nonconductive materials. Its inherent material selec- tivity makes the microwave drill ideally suited for the con- trolled

  14. Drilling deep through the ocean crust into the upper mantle Benot Ildefonse (1) and Mission Moho proponents (2)

    E-Print Network [OSTI]

    Demouchy, Sylvie

    Drilling deep through the ocean crust into the upper mantle Benoît Ildefonse (1) and Mission Moho the inventory of global thermal, chemical and associated biological fluxes. Drilling an ultra-deep hole, and into the uppermost mantle is a long-standing goal of scientific ocean drilling; it remains critical to answer many

  15. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University extent of the Doughnut Hole, to image concurrent changes in the local velocity structure, and to describe

  16. Geothermal Development and the Use of Categorical Exclusions Under the National Environmental Policy Act of 1969 (Presentation)

    SciTech Connect (OSTI)

    Levine, A.; Young, K. R.

    2014-09-01T23:59:59.000Z

    The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we: Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs; Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONS's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.

  17. Ground Gravity Survey At Neal Hot Springs Geothermal Area (U...

    Open Energy Info (EERE)

    Hot Springs. Data from these surveys will be integrated with older data from Chevron Minerals 1979 drill hole. Notes The gravity survey covered an area of approximately 34 km2...

  18. Power Plays: Geothermal Energy In Oil and Gas Fields

    Broader source: Energy.gov [DOE]

    The SMU Geothermal Lab is hosting their 7th international energy conference and workshop Power Plays: Geothermal Energy in Oil and Gas Fields May 18-20, 2015 on the SMU Campus in Dallas, Texas. The two-day conference brings together leaders from the geothermal, oil and gas communities along with experts in finance, law, technology, and government agencies to discuss generating electricity from oil and gas well fluids, using the flare gas for waste heat applications, and desalinization of the water for project development in Europe, China, Indonesia, Mexico, Peru and the US. Other relevant topics include seismicity, thermal maturation, and improved drilling operations.

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

    SciTech Connect (OSTI)

    Goodman, M.A.

    1981-07-01T23:59:59.000Z

    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.

  20. Geothermal Exploration Policy Mechanisms: Lessons for the United States from International Applications

    SciTech Connect (OSTI)

    Speer, B.; Economy, R.; Lowder, T.; Schwabe, P.; Regenthal, S.

    2014-05-01T23:59:59.000Z

    This report focuses on five of the policy types that are most relevant to the U.S. market and political context for the exploration and confirmation of conventional hydrothermal (geothermal) resources in the United States: (1) drilling failure insurance, (2) loan guarantees, (3) subsidized loans, (4) capital subsidies, and (5) government-led exploration. It describes each policy type and its application in other countries and regions. It offers policymakers a guide for drafting future geothermal support mechanisms for the exploration-drilling phase of geothermal development.

  1. Training and Drills

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-08-21T23:59:59.000Z

    The volume offers a framework for effective management of emergency response training and drills. Canceled by DOE G 151.1-3.

  2. Microhole Wireless Steering While Drilling System

    SciTech Connect (OSTI)

    John Macpherson; Thomas Gregg

    2007-12-31T23:59:59.000Z

    A background to Coiled Tubing Bottom Hole Assemblies (CT-BHA) is given, and the development of a bi-directional communications and power module (BCPM)component is described. The successful operation of this component in both the laboratory and field environment is described. The primary conclusion of this development is that the BCPM component operates as anticipated within the CT-BHA, and significantly extends the possibility of drilling with coiled tubing in the microhole environment.

  3. Conoco cuts North Sea drilling time by 40%

    SciTech Connect (OSTI)

    Shute, J.; Alldredge, G.

    1982-07-01T23:59:59.000Z

    The record-breaking Murchison platform has slashed development drilling time by an average of 20 days and in the process has attracted the interest of oil men over the world. This study details each aspect of the operation - how the rig was modified for speed, mud and casing programs and how they were changed, computer-aided MWD directional program, special conductor pipe and the way straight-hole turbodrilling complemented conventional rotary drilling.

  4. Development and Manufacture of Cost-Effective Composite Drill Pipe

    SciTech Connect (OSTI)

    James C. Leslie

    2008-12-31T23:59:59.000Z

    Advanced Composite Products and Technology, Inc. (ACPT) has developed composite drill pipe (CDP) that matches the structural and strength properties of steel drill pipe, but weighs less than 50 percent of its steel counterpart. Funding for the multiyear research and development of CDP was provided by the U.S. Department of Energy Office of Fossil Energy through the Natural Gas and Oil Projects Management Division at the National Energy Technology Laboratory (NETL). Composite materials made of carbon fibers and epoxy resin offer mechanical properties comparable to steel at less than half the weight. Composite drill pipe consists of a composite material tube with standard drill pipe steel box and pin connections. Unlike metal drill pipe, composite drill pipe can be easily designed, ordered, and produced to meet specific requirements for specific applications. Because it uses standard joint connectors, CDP can be used in lieu of any part of or for the entire steel drill pipe section. For low curvature extended reach, deep directional drilling, or ultra deep onshore or offshore drilling, the increased strength to weight ratio of CDP will increase the limits in all three drilling applications. Deceased weight will reduce hauling costs and increase the amount of drill pipe allowed on offshore platforms. In extreme extended reach areas and high-angle directional drilling, drilling limits are associated with both high angle (fatigue) and frictional effects resulting from the combination of high angle curvature and/or total weight. The radius of curvature for a hole as small as 40 feet (12.2 meters) or a build rate of 140 degrees per 100 feet is within the fatigue limits of specially designed CDP. Other properties that can be incorporated into the design and manufacture of composite drill pipe and make it attractive for specific applications are corrosion resistance, non-magnetic intervals, and abrasion resistance coatings. Since CDP has little or no electromagnetic force fields up to 74 kilohertz (KHz), a removable section of copper wire can be placed inside the composite pipe to short the tool joints electrically allowing electromagnetic signals inside the collar to induce and measure the same within the rock formation. By embedding a pair of wires in the composite section and using standard drill pipe box and pin ends equipped with a specially developed direct contact joint electrical interface, power can be supplied to measurement-while-drilling (MWD) and logging-while-drilling (LWD) bottom hole assemblies. Instantaneous high-speed data communications between near drill bit and the surface are obtainable utilizing this 'smart' drilling technology. The composite drill pipe developed by ACPT has been field tested successfully in several wells nationally and internationally. These tests were primarily for short radius and ultra short radius directional drilling. The CDP in most cases performed flawlessly with little or no appreciable wear. ACPT is currently marketing a complete line of composite drill collars, subs, isolators, casing, and drill pipe to meet the drilling industry's needs and tailored to replace metal for specific application requirements.

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

    SciTech Connect (OSTI)

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

    2012-08-01T23:59:59.000Z

    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).

  6. Interactive Maps from the Great Basin Center for Geothermal Energy

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Great Basin Center for Geothermal Energy, part of the University of Nevada, Reno, conducts research towards the establishment of geothermal energy as an economically viable energy source within the Great Basin. The Center specializes in collecting and synthesizing geologic, geochemical, geodetic, geophysical, and tectonic data, and using Geographic Information System (GIS) technology to view and analyze this data and to produce favorability maps of geothermal potential. The interactive maps are built with layers of spatial data that are also available as direct file downloads (see DDE00299). The maps allow analysis of these many layers, with various data sets turned on or off, for determining potential areas that would be favorable for geothermal drilling or other activity. They provide information on current exploration projects and leases, Bureau of Land Management land status, and map presentation of each type of scientific spatial data: geothermal, geophysical, geologic, geodetic, groundwater, and geochemical.

  7. Five-megawatt geothermal-power pilot-plant project

    SciTech Connect (OSTI)

    Not Available

    1980-08-29T23:59:59.000Z

    This is a report on the Raft River Geothermal-Power Pilot-Plant Project (Geothermal Plant), located near Malta, Idaho; the review took place between July 20 and July 27, 1979. The Geothermal Plant is part of the Department of Energy's (DOE) overall effort to help commercialize the operation of electric power plants using geothermal energy sources. Numerous reasons were found to commend management for its achievements on the project. Some of these are highlighted, including: (a) a well-qualified and professional management team; (b) effective cost control, performance, and project scheduling; and (c) an effective and efficient quality-assurance program. Problem areas delineated, along with recommendations for solution, include: (1) project planning; (2) facility design; (3) facility construction costs; (4) geothermal resource; (5) drilling program; (6) two facility construction safety hazards; and (7) health and safety program. Appendices include comments from the Assistant Secretary for Resource Applications, the Controller, and the Acting Deputy Director, Procurement and Contracts Management.

  8. Geothermal studies of seven interior salt domes

    SciTech Connect (OSTI)

    Not Available

    1983-06-01T23:59:59.000Z

    This report defines and compares the geothermal environments of eight selected Gulf Coast salt domes. The thermal regimes in and around Gulf Coast salt domes are not well documented. The data base used for this study is an accumulation of bottom-hole temperature readings from oil and gas exploration wells and temperature logs run for the National Waste Terminal Storage (NWTS) program. The bottom-hole tempreatures were corrected in order to estimate the actual geothermal environments. Prior thermal studies and models indicate temperatures in and around salt domes are elevated above the norm by 1/sup 0/F to 25/sup 0/F. Using existing geothermal data and accepted theory, geothermal gradients for the selected domes and surrounding sediments were estimated. This study concludes that salt domes within a given basin have similar geothermal gradients, but that the basins differ in average geothermal gradients. This relationship is probably controlled by deep basement structural trends. No evidence of residual heat of emplacement was found associated with any of the selected domes.

  9. Structural investigations of Great Basin geothermal fields: Applications and implications

    SciTech Connect (OSTI)

    Faulds, James E [Nevada Bureau of Mines and Geology, Univ. of Nevada, Reno, NV (United States); Hinz, Nicholas H. [Nevada Bureau of Mines and Geology, Univ. of Nevada, Reno, NV (United States); Coolbaugh, Mark F [Great Basin Center for Geothermal Energy, Univ. of Nevada, Reno, NV (United States)

    2010-11-01T23:59:59.000Z

    Because fractures and faults are commonly the primary pathway for deeply circulating hydrothermal fluids, structural studies are critical to assessing geothermal systems and selecting drilling targets for geothermal wells. Important tools for structural analysis include detailed geologic mapping, kinematic analysis of faults, and estimations of stress orientations. Structural assessments are especially useful for evaluating geothermal fields in the Great Basin of the western USA, where regional extension and transtension combine with high heat flow to generate abundant geothermal activity in regions having little recent volcanic activity. The northwestern Great Basin is one of the most geothermally active areas in the USA. The prolific geothermal activity is probably due to enhanced dilation on N- to NNE-striking normal faults induced by a transfer of NW-directed dextral shear from the Walker Lane to NW-directed extension. Analysis of several geothermal fields suggests that most systems occupy discrete steps in normal fault zones or lie in belts of intersecting, overlapping, and/or terminating faults. Most fields are associated with steeply dipping faults and, in many cases, with Quaternary faults. The structural settings favoring geothermal activity are characterized by subvertical conduits of highly fractured rock along fault zones oriented approximately perpendicular to the WNW-trending least principal stress. Features indicative of these settings that may be helpful in guiding exploration for geothermal resources include major steps in normal faults, interbasinal highs, groups of relatively low discontinuous ridges, and lateral jogs or terminations of mountain ranges.

  10. Laser bottom hole assembly

    DOE Patents [OSTI]

    Underwood, Lance D; Norton, Ryan J; McKay, Ryan P; Mesnard, David R; Fraze, Jason D; Zediker, Mark S; Faircloth, Brian O

    2014-01-14T23:59:59.000Z

    There is provided for laser bottom hole assembly for providing a high power laser beam having greater than 5 kW of power for a laser mechanical drilling process to advance a borehole. This assembly utilizes a reverse Moineau motor type power section and provides a self-regulating system that addresses fluid flows relating to motive force, cooling and removal of cuttings.

  11. Incentive drilling contracts; A logical approach for enhancement of drilling efficiency

    SciTech Connect (OSTI)

    Moomjian, C.A. Jr. (Santa Fe Drilling Co. (US))

    1992-03-01T23:59:59.000Z

    Incentive drilling contracts historically have been based on the footage and turnkey concepts. Because these concepts have not been used widely in the international and offshore arenas, this paper discusses other innovative approaches to incentive contracts. Case studies of recently completed or current international and offshore contracts are presented to describe incentive projects based on a performance bonus (Case 1), lump sum per well (Case 2), target time and cap for a specified hole section (Case 3), and per-well target time (Case 4). This paper concludes with a review and comparison of the case studies and a general discussion of factors that produce successful innovative incentive programs that enhance drilling efficiency.

  12. Geothermal probabilistic cost study

    SciTech Connect (OSTI)

    Orren, L.H.; Ziman, G.M.; Jones, S.C.; Lee, T.K.; Noll, R.; Wilde, L.; Sadanand, V.

    1981-08-01T23:59:59.000Z

    A tool is presented to quantify the risks of geothermal projects, the Geothermal Probabilistic Cost Model (GPCM). The GPCM model is used to evaluate a geothermal reservoir for a binary-cycle electric plant at Heber, California. Three institutional aspects of the geothermal risk which can shift the risk among different agents are analyzed. The leasing of geothermal land, contracting between the producer and the user of the geothermal heat, and insurance against faulty performance are examined. (MHR)

  13. An engineering approach to characterizing synthetic-based drilling fluids for deepwater and extended reach drilling applications

    SciTech Connect (OSTI)

    Dye, W.M. [Baker Hughes INTEQ, Houston, TX (United States); Robinson, G.; Mullen, G.A.

    1998-12-31T23:59:59.000Z

    Rheological techniques currently employed to characterize drilling fluids are based upon models and instrumentation that were in existence over forty years ago. A great deal of literature exists that questions the degree to which these techniques address the requirements placed on drilling muds in today`s drilling environment. The solution to many of the problems facing companies operating in deepwater requires an in-depth understanding of the rheological properties of synthetic-based drilling muds. These problems include lost circulation, hole cleaning and barite sag. This paper discusses the application of sophisticated rheological instrumentation and techniques that specifically address the needs of deepwater drilling operations. Focus has been placed on studying the gel structure of synthetics, particularly at low temperatures, in order to provide engineered solutions to get strength-related problems encountered in deepwater.

  14. A Geological and Geophysical Study of the Geothermal Energy Potential of Pilgrim Springs, Alaska

    SciTech Connect (OSTI)

    Turner, Donald L.; Forbes, Robert B. [eds.

    1980-01-01T23:59:59.000Z

    The Pilgrim Springs geothermal area, located about 75 km north of Nome, was the subject of an intensive, reconnaissance-level geophysical and geological study during a 90-day period in the summer of 1979. The thermal springs are located in a northeast-oriented, oval area of thawed ground approximately 1.5 km{sup 2} in size, bordered on the north by the Pilgrim River. A second, much smaller, thermal anomaly was discovered about 3 km northeast of the main thawed area. Continuous permafrost in the surrounding region is on the order of 100 m thick. Present surface thermal spring discharge is {approx} 4.2 x 10{sup -3} m{sup 3} s{sup -1} (67 gallons/minute) of alkali-chloride-type water at a temperature of 81 C. The reason for its high salinity is not yet understood because of conflicting evidence for seawater vs. other possible water sources. Preliminary Na-K-Ca geothermometry suggests deep reservoir temperatures approaching 150 C, but interpretation of these results is difficult because of their dependence on an unknown water mixing history. Based on these estimates, and present surface and drill hole water temperatures, Pilgrim Springs would be classified as an intermediate-temperature, liquid-dominated geothermal system.

  15. Rotation-Enabled 7-Degree of Freedom Seismometer for Geothermal Resource Development Phase 1 Final Report

    SciTech Connect (OSTI)

    Pierson, Bob; Laughlin, Darren

    2013-10-29T23:59:59.000Z

    Under this Department of Energy (DOE) grant, A-Tech Corporation d.b.a. Applied Technology Associates (ATA), seeks to develop a seven-degree-of-freedom (7-DOF) seismic measurement tool for high-temperature geothermal applications. The Rotational-Enabled 7-DOF Seismometer includes a conventional tri-axial accelerometer, a conventional pressure sensor or hydrophone, and a tri-axial rotational sensor. The rotational sensing capability is novel, based upon ATA?s innovative research in rotational sensing technologies. The geothermal industry requires tools for high-precision seismic monitoring of crack formation associated with Enhanced Geothermal System (EGS) stimulation activity. Currently, microseismic monitoring is conducted by deploying many seismic tools at different depth levels along a ?string? within drilled observation wells. Costs per string can be hundreds of thousands of dollars. Processing data from the spatial arrays of linear seismometers allows back-projection of seismic wave states. In contrast, a Rotational-Enabled 7-DOF Seismometer would simultaneously measure p-wave velocity, s-wave velocity, and incident seismic wave direction all from a single point measurement. In addition, the Rotational-Enabled 7-DOF Seismometer will, by its nature, separate p- and s-waves into different data streams, simplifying signal processing and facilitating analysis of seismic source signatures and geological characterization. By adding measurements of three additional degrees-of-freedom at each level and leveraging the information from this new seismic observable, it is likely that an equally accurate picture of subsurface seismic activity could be garnered with fewer levels per hole. The key cost savings would come from better siting of the well due to increased information content and a decrease in the number of confirmation wells drilled, also due to the increase in information per well. Improved seismic tools may also increase knowledge, understanding, and confidence, thus removing some current blocks to feasibility and significantly increasing access to potential geothermal sites. During the Phase 1 effort summarized in this final report, the ATA Team modeled and built two TRL 3 proof-of-concept test units for two competing rotational sensor technologies. The two competing technologies were based on ATA?s angular rate and angular displacement measurement technologies: ? Angular rate: ATA?s Magnetohydrodynamic Angular Rate Sensor (Seismic MHD) ? Angular displacement: ATA?s Low Frequency Improved Torsional Seismometer (LFITS) In order to down-select between these two technologies and formulate a go / no go decision, the ATA Team analyzed and traded scientific performance requirements and market constraints against sensor characteristics and components, acquiring field data where possible to validate the approach and publishing results from these studies of rotational technology capability. Based on the results of Phase 1, the ATA Team finds that the Seismic MHD (SMHD) technology is the best choice for enabling rotational seismometry and significant technical potential exists for micro-seismic monitoring using a downhole 7-DOF device based on the SMHD. Recent technical papers and field data confirm the potential of rotational sensing for seismic mapping, increasing confidence that cost-reduction benefits are achievable for EGS. However, the market for geothermal rotational sensing is small and undeveloped. As a result, this report recommends modifying the Phase 2 plan to focus on prototype development aimed at partnering with early adopters within the geothermal industry and the scientific research community. The highest public benefit will come from development and deployment of a science-grade SMHD rotational seismometer engineered for geothermal downhole conditions and an integrated test tool for downhole measurements at active geothermal test sites.

  16. Crump Geyser: High Precision Geophysics & Detailed Structural Exploration & Slim Well Drilling

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Discover new 260F and 300F geothermal reservoirs in Oregon. To demonstrate the application of high precision geophysics for well targeting. Demonstrate a combined testing approach to Flowing Differential Self Potential (FDSP) and electrical tomography resistivity as a guide to exploration and development. Demonstrate utility and benefits of sump-less drilling for a low environmental impact. Create both short and long term employment through exploration, accelerated development timeline and operation.

  17. Geothermal Resources and Technologies

    Broader source: Energy.gov [DOE]

    This page provides a brief overview of geothermal energy resources and technologies supplemented by specific information to apply geothermal systems within the Federal sector.

  18. Geothermal Technologies Legacy Collection

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    programmatic reports Geothermal resource maps International journal citations DOEOSTI--C126 0811 A valuable source of DOE-sponsored geothermal information at your fingertips...

  19. Director, Geothermal Technologies Office

    Broader source: Energy.gov [DOE]

    The mission of the Geothermal Technologies Office (GTO) is to accelerate the development and deployment of clean, domestic geothermal resources that will promote a stronger, more productive economy...

  20. Geothermal Technologies Subject Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Programmatic Reports Geothermal Resource Maps International journal citations DOEOSTI--C126 1008 A valuable source of DOE-sponsored geothermal information at your fingertips Hot...

  1. Geothermal Technologies Program Overview

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Jay Nathwani Acting Program Manager Geothermal Technologies Program Office of Energy Efficiency and Renewable Energy The Geothermal Technologies Program Overview May 18 2010 Energy...

  2. Mining earth's heat: development of hot-dry-rock geothermal reservoirs

    SciTech Connect (OSTI)

    Pettitt, R.A.; Becker, N.M.

    1983-01-01T23:59:59.000Z

    The energy-extraction concept of the Hot Dry Rock (HDR) Geothermal Program, as initially developed by the Los Alamos National Laboratory, is to mine this heat by creating a man-made reservoir in low-permeability, hot basement rock. This concept has been successfully proven at Fenton Hill in northern New Mexico by drilling two holes to a depth of approximately 3 km (10,000 ft) and a bottom temperature of 200/sup 0/C (392/sup 0/F), then connecting the boreholes with a large-diametervertical hydraulic fracture. Water is circulated down one borehole, heated by the hot rock, and rises up the second borehole to the surface where the heat is extracted and the cooled water is reinjected into the underground circulation loop. This system has operated for a cumulative 416 days during engineering and reservoir testing. An energy equivalent of 3 to 5 MW(t) was produced without adverse environmental problems. During one test, a generator was installed in the circulation loop and produced 60 kW of electricity. A second-generation system, recently drilled to 4.5 km (15,000 ft) and temperatures of 320/sup 0/C (608/sup 0/F), entails creating multiple, parallel fractures between a pair of inclined boreholes. This system should produce 5 to 10 MW(e) for 20 years. Significant contributions to underground technology have been made through the development of the program.

  3. Disposal of drilling fluids

    SciTech Connect (OSTI)

    Bryson, W.R.

    1983-06-01T23:59:59.000Z

    Prior to 1974 the disposal of drilling fluids was not considered to be much of an environmental problem. In the past, disposal of drilling fluids was accomplished in various ways such as spreading on oil field lease roads to stabilize the road surface and control dust, spreading in the base of depressions of sandy land areas to increase water retention, and leaving the fluid in the reserve pit to be covered on closure of the pit. In recent years, some states have become concerned over the indescriminate dumping of drilling fluids into pits or unauthorized locations and have developed specific regulations to alleviate the perceived deterioration of environmental and groundwater quality from uncontrolled disposal practices. The disposal of drilling fluids in Kansas is discussed along with a newer method or treatment in drilling fluid disposal.

  4. Geothermal Tomorrow

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), Geothermal Technologies ProgramDemonstration

  5. Air emissions from laser drilling of printed wiring board materials. Report for May 1995--July 1997

    SciTech Connect (OSTI)

    Darvin, C.H.; Kershner, C.J.

    1999-05-01T23:59:59.000Z

    The paper gives results of a study to characterize gases generated during laser drilling of printed wiring board (PWB) material and identifies the pollutants and generation rates found during the drilling process. The electronics packaging industry has traditionally relied on mechanical drilling systems to prepare holes in PWB material. Recently, however, a potentially new and innovative application for laser technology was developed for drilling PWB holes. This application of lasers has the potential to significantly reduce the time and cost of producing PWBs. The process is also predicted to reduce the volume of solid waste product generated during PWB manufacture. The continuing question presented on the use of laser drilling is its potential for producing air pollution which may be generated from thermal decomposition at the laser drilling site.

  6. Geothermal Today: 2005 Geothermal Technologies Program Highlights

    SciTech Connect (OSTI)

    Not Available

    2005-09-01T23:59:59.000Z

    This DOE/EERE Geothermal Technologies Program publication highlights accomplishments and activities of the program during the last two years.

  7. Advanced Mud System for Microhole Coiled Tubing Drilling

    SciTech Connect (OSTI)

    Kenneth Oglesby

    2008-12-01T23:59:59.000Z

    An advanced mud system was designed and key components were built that augment a coiled tubing drilling (CTD) rig that is designed specifically to drill microholes (less than 4-inch diameter) with advanced drilling techniques. The mud system was tailored to the hydraulics of the hole geometries and rig characteristics required for microholes and is capable of mixing and circulating mud and removing solids while being self contained and having zero discharge capability. Key components of this system are two modified triplex mud pumps (High Pressure Slurry Pumps) for advanced Abrasive Slurry Jetting (ASJ) and a modified Gas-Liquid-Solid (GLS) Separator for well control, flow return and initial processing. The system developed also includes an additional component of an advanced version of ASJ which allows cutting through most all materials encountered in oil and gas wells including steel, cement, and all rock types. It includes new fluids and new ASJ nozzles. The jetting mechanism does not require rotation of the bottom hole assembly or drill string, which is essential for use with Coiled Tubing (CT). It also has low reactive forces acting on the CT and generates cuttings small enough to be easily cleaned from the well bore, which is important in horizontal drilling. These cutting and mud processing components and capabilities compliment the concepts put forth by DOE for microhole coiled tubing drilling (MHTCTD) and should help insure the reality of drilling small diameter holes quickly and inexpensively with a minimal environmental footprint and that is efficient, compact and portable. Other components (site liners, sump and transfer pumps, stacked shakers, filter membranes, etc.. ) of the overall mud system were identified as readily available in industry and will not be purchased until we are ready to drill a specific well.

  8. Geothermal: Sponsored by OSTI -- National Geothermal Data System...

    Office of Scientific and Technical Information (OSTI)

    National Geothermal Data System: Case Studies on Exploration and Development of Potential Geothermal Sites Through Distributed Data Sharing Geothermal Technologies Legacy...

  9. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Lienau, 1990) Exploration Activity Details Location Lightning Dock Geothermal Area...

  10. Geothermal: Sponsored by OSTI -- Development of a geothermal...

    Office of Scientific and Technical Information (OSTI)

    Development of a geothermal resource in a fractured volcanic formation: Case study of the Sumikawa Geothermal Field, Japan Geothermal Technologies Legacy Collection HelpFAQ | Site...

  11. Geothermal: Sponsored by OSTI -- Recovery Act: Geothermal Data...

    Office of Scientific and Technical Information (OSTI)

    Recovery Act: Geothermal Data Aggregation: Submission of Information into the National Geothermal Data System, Final Report DOE Project DE-EE0002852 June 24, 2014 Geothermal...

  12. Geothermal: Sponsored by OSTI -- Calpine geothermal visitor center...

    Office of Scientific and Technical Information (OSTI)

    Calpine geothermal visitor center upgrade project An interactive approach to geothermal outreach and education at The Geysers Geothermal Technologies Legacy Collection HelpFAQ |...

  13. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Lightning Dock Geothermal Area (Smith, 1978) Exploration Activity Details Location Lightning Dock Geothermal Area Exploration Technique Geothermal Literature Review Activity Date...

  14. National Geothermal Data System (NGDS) Geothermal Data Domain...

    Open Energy Info (EERE)

    NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: National Geothermal...

  15. Geothermal: Sponsored by OSTI -- The Preston Geothermal Resources...

    Office of Scientific and Technical Information (OSTI)

    The Preston Geothermal Resources; Renewed Interest in a Known Geothermal Resource Area Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search...

  16. Geothermal: Sponsored by OSTI -- GEOTHERMAL / SOLAR HYBRID DESIGNS...

    Office of Scientific and Technical Information (OSTI)

    GEOTHERMAL SOLAR HYBRID DESIGNS: USE OF GEOTHERMAL ENERGY FOR CSP FEEDWATER HEATING Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On...

  17. Geothermal Literature Review At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    Rafferty, 1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Rafferty, 1997)...

  18. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    of the flowing fluid at the 9 newly drilled deep wells in Kizildere Geothermal Field. Figure 1 Location map as the dynamic properties of the fluid flowing both through the wellbore and the reservoir. It is known that Petroleum and Geothermal fluids have similar properties in terms of well testing. In this regard, almost

  19. Report of the Offset Drilling Workshop Ocean Drilling Program

    E-Print Network [OSTI]

    Report of the Offset Drilling Workshop held at Ocean Drilling Program Texas A&M University College Need for an Engineering Leg 35 Realistic Strategies for Offset Drilling 37 Appendix 1 Workshop (Leg 153) 21 Figure 4 "Rig Floor Perception" of Generic Boreholes Drilled During Leg 153 22 Figure 5

  20. Cranial Drilling Tool with Retracting Drill Bit Upon Skull Penetration

    E-Print Network [OSTI]

    Cranial Drilling Tool with Retracting Drill Bit Upon Skull Penetration Paul Loschak1 , Kechao Xiao1 is required to perform the drilling w devices on the market. Although frequent monitoring has been correlated of a sufficient number of neurosurgeons [3]. The cranial drilling device described in this paper designed to allow

  1. Thermal Gradient Holes At Salt Wells Area (Bureau of Land Management...

    Open Energy Info (EERE)

    Salt Wells Area (Bureau of Land Management, 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes At Salt Wells Area...

  2. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    or direct use applications after drilling and well testing. INTRODUCTION The Pueblo of Jemez is located, approximately one mile south of the main village of Jemez Pueblo. A 240-foot deep well was drilled in 1991 at the Indian Springs fault zone to test for the geothermal reservoir (Figure 2). The well is located right next

  3. PROCEEDINGS, Thirty-Fourth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 9-11, 2009

    E-Print Network [OSTI]

    Stanford University

    Company, Salt Lake City, UT 84104 3 ORMAT Nevada Inc., Reno NV 89511 4 Schlumberger, Data and Consulting mineral grains, drilling induced fractures, and natural fractures. This paper describes selected geologic was drilled and then logged and analyzed using a multi-disciplinary approach to help evaluate the geothermal

  4. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    , Stanford, California, January 31 - February 2, 2011 SGP-TR-191 DIRECTIONAL WELLS AT THE PAILAS GEOTHERMAL Costa Rica. Since 2009, the Costa Rican Electricity Company (ICE) has drilled 7 deep directional boreholes (in addition to the 9 existing vertical boreholes). The purpose of directional drilling has been

  5. Geothermal Direct Heat Applications Program Summary

    SciTech Connect (OSTI)

    None

    1981-09-25T23:59:59.000Z

    Because of the undefined risk in the development and use of geothermal energy as a thermal energy source, the Department of Energy Division of Geothermal Energy solicited competitive proposals for field experiments in the direct use of geothermal energy. Twenty-two proposals were selected for cost-shared funding with one additional project co-funded by the State of New Mexico. As expected, the critical parameter was developing a viable resource. So far, of the twenty resources drilled, fourteen have proved to be useful resources. These are: Boise, Idaho; Elko heating Company in Nevada; Pagosa Springs, Colorado; Philip School, Philip, South Dakota; St. Mary's Hospital, Pierre, South Dakota; Utah Roses near Salt Lake City; Utah State Prison, Utah; Warm Springs State Hospital, Montana; T-H-S Hospital, Marlin, Texas; Aquafarms International in the Cochella Valley, California; Klamath County YMCA and Klamath Falls in Oregon; Susanville, California and Monroe, utah. Monroe's 164 F and 600 gpm peak flow was inadequate for the planned project, but is expected to be used in a private development. Three wells encountered a resource insufficient for an economical project. These were Madison County at Rexburg, Idaho; Ore-Ida Foods at Ontario, Oregon and Holly Sugar at Brawley, California. Three projects have yet to confirm their resource. The Navarro College well in Corsicana, Texas is being tested; the Reno, Moana, Nevada well is being drilled and the El Centro, California well is scheduled to be drilled in January 1982. The agribusiness project at Kelly Hot Springs was terminated because a significant archeological find was encountered at the proposed site. The Diamond Ring Ranch in South Dakota, and the additional project, Carrie Tingley Hospital in Truth or Consequences, New Mexico both used existing wells. The projects that encountered viable resources have proceeded to design, construct, and in the most advanced projects, to operate geothermal systems for district heating, space heating, grain drying and aquaculture.

  6. Alaska geothermal bibliography

    SciTech Connect (OSTI)

    Liss, S.A.; Motyka, R.J.; Nye, C.J. (comps.)

    1987-05-01T23:59:59.000Z

    The Alaska geothermal bibliography lists all publications, through 1986, that discuss any facet of geothermal energy in Alaska. In addition, selected publications about geology, geophysics, hydrology, volcanology, etc., which discuss areas where geothermal resources are located are included, though the geothermal resource itself may not be mentioned. The bibliography contains 748 entries.

  7. Geothermal Tomorrow 2008

    SciTech Connect (OSTI)

    Not Available

    2008-09-01T23:59:59.000Z

    Brochure describing the recent activities and future research direction of the DOE Geothermal Program.

  8. Geothermal Prospects in Colorado

    Broader source: Energy.gov [DOE]

    Geothermal Prospects in Colorado presentation at the April 2013 peer review meeting held in Denver, Colorado.

  9. Geothermal Technologies Newsletter

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Geothermal Technologies Newsletter features the latest information about its geothermal research and development efforts. The Geothermal Resources Council (GRC)— a tax-exempt, non-profit, geothermal educational association — publishes quarterly as an insert in its GRC Bulletin.

  10. GEOTHERMAL SUBSIDENCE RESEARCH PROGRAM PLAN

    E-Print Network [OSTI]

    Lippmann, Marcello J.

    2010-01-01T23:59:59.000Z

    Administration, Division of Geothermal Energy. Two teams ofassociated with geothermal energy development. These g o a lthe division of Geothermal Energy. TASK 1 Identify Areas for

  11. GEOTHERMAL SUBSIDENCE RESEARCH PROGRAM PLAN

    E-Print Network [OSTI]

    Lippmann, Marcello J.

    2010-01-01T23:59:59.000Z

    associated with geothermal energy development. These g o a lthe division of Geothermal Energy. TASK 1 Identify Areas forLaboratory, NSF Geothermal Energy Conference, Pasadena,

  12. GEOTHERMAL SUBSIDENCE RESEARCH PROGRAM PLAN

    E-Print Network [OSTI]

    Lippmann, Marcello J.

    2010-01-01T23:59:59.000Z

    of Subsiding Areas and Geothermal Subsidence Potential25 Project 2-Geothermal Subsidence Potential Maps . . . . .Subsidence Caused by a Geothermal Project and Subsidence Due

  13. Video Resources on Geothermal Technologies

    Broader source: Energy.gov [DOE]

    Geothermal video offerings at the Department of Energy include simple interactive illustrations of geothermal power technologies and interviews on initiatives in the Geothermal Technologies Office.

  14. Retrospective examination of geothermal environmental assessments

    SciTech Connect (OSTI)

    Webb, J.W.; Eddlemon, G.K.; Reed, A.W.

    1984-03-01T23:59:59.000Z

    Since 1976, the Department of Energy (DOE) has supported a variety of programs and projects dealing with the exploration, development, and utilization of geothermal energy. This report presents an overview of the environmental impacts associated with these efforts. Impacts that were predicted in the environmental analyses prepared for the programs and projects are reviewed and summarized, along with measures that were recommended to mitigate these impacts. Also, for those projects that have gone forward, actual impacts and implemented mitigation measures are reported, based on telephone interviews with DOE and project personnel. An accident involving spills of geothermal fluids was the major environmental concern associated with geothermal development. Other important considerations included noise from drilling and production, emissions of H/sub 2/S and cooling tower drift, disposal of solid waste (e.g., from H/sub 2/S control), and the cumulative effects of geothermal development on land use and ecosystems. Mitigation measures were frequently recommended and implemented in conjunction with noise reduction; drift elimination; reduction of fugitive dust, erosion, and sedimentation; blowout prevention; and retention of wastes and spills. Monitoring to resolve uncertainties was often implemented to detect induced seismicity and subsidence, noise, drift deposition, concentrations of air and water pollutants, and effects on groundwater. The document contains an appendix, based on these findings, which outlines major environmental concerns, mitigation measures, and monitoring requirements associated with geothermal energy. Sources of information on various potential impacts are also listed.

  15. Managed Pressure Drilling Candidate Selection

    E-Print Network [OSTI]

    Nauduri, Anantha S.

    2010-07-14T23:59:59.000Z

    Managed Pressure Drilling now at the pinnacle of the 'Oil Well Drilling' evolution tree, has itself been coined in 2003. It is an umbrella term for a few new drilling techniques and some preexisting drilling techniques, all of them aiming to solve...

  16. November 2002 OCEAN DRILLING PROGRAM

    E-Print Network [OSTI]

    November 2002 OCEAN DRILLING PROGRAM LEG 209 SCIENTIFIC PROSPECTUS DRILLING MANTLE PERIDOTITE ALONG Drilling Program Texas A&M University 1000 Discovery Drive College Station TX 77845-9547 USA -------------------------------- Dr. D. Jay Miller Leg Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University

  17. January 2003 OCEAN DRILLING PROGRAM

    E-Print Network [OSTI]

    January 2003 OCEAN DRILLING PROGRAM LEG 210 SCIENTIFIC PROSPECTUS DRILLING THE NEWFOUNDLAND HALF OF THE NEWFOUNDLAND­IBERIA TRANSECT: THE FIRST CONJUGATE MARGIN DRILLING IN A NON-VOLCANIC RIFT Brian E. Tucholke Co Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University 1000 Discovery

  18. December 2001 OCEAN DRILLING PROGRAM

    E-Print Network [OSTI]

    December 2001 OCEAN DRILLING PROGRAM LEG 203 SCIENTIFIC PROSPECTUS DRILLING AT THE EQUATORIAL -------------------------------- Dr. Jack Bauldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University. Acton Leg Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery

  19. Validation of Multicomponent Equilibrium Geothermometry at Four Geothermal Power Plants

    SciTech Connect (OSTI)

    Ghanashyam Neupane; Jeffrey S Baum; Earl D Mattson; Gregory L Mines; Carl D Palmer; Robert W Smith

    2001-01-01T23:59:59.000Z

    This paper evaluates our ability to predict geothermal reservoir temperatures using water compositions measured from surface hot springs or shallow subsurface wells at four geothermal sites prior to the startup of geothermal energy production using RTEst, a multicomponent equilibrium geothermometer we have developed and are testing. The estimated reservoir temperatures of these thermal expressions are compared to measured bottom-hole temperatures of production wells at Raft River, ID; Neal Hot Springs, OR; Roosevelt Hot Springs, UT; and Steamboat Springs, NV geothermal sites. In general, temperatures of the producing reservoir estimated from the composition of water from surface expressions/shallow wells using RTEst are similar to the measured bottom-hole temperatures. For example, estimates for the Neal Hot Springs system are within ±10 şC of the production temperatures. However, some caution must be exercised in evaluating RTEst predictions. Estimated temperature for a shallow Raft River well (Frazier well) is found to be slightly lower (ca. 15 şC) than the bottom-hole temperatures from the geothermal plant production wells. For the Raft River system, local geology and fluid mixing model indicate that the fluid source for this shallow well may not have originated from the production reservoir. Similarly, RTEst results for Roosevelt Hot springs and Steamboat Springs geothermal areas were found consistent with the reservoir temperatures obtained from deep wells. These results suggest that the RTEst could be a valuable tool for estimating temperatures and evaluation geothermal resources.

  20. Geothermal Energy R&D Program Annual Progress Report for Fiscal Year 1992

    SciTech Connect (OSTI)

    None

    1993-07-01T23:59:59.000Z

    Geothermal budget actual amounts are shown for FY 1989 -1992, broken down by about 15 categories. Here, the main Program categories are: Exploration Technology, Drilling Technology, Reservoir Technology, Conversion Technology (power plants and materials), Industry-Coupled Drilling, Drilling Applications, Reservoir Engineering Applications, Direct Heat, Geopressured Wells Operation, and Hot Dry Rock Research. Here the title--Industry-Coupled Drilling--covered case studies of the Coso, CA, and Dixie Valley, NV, fields, and the Long Valley Exploratory Well (which had started as a magma energy exploration project, but reported here as a hydrothermal prospect evaluation well). (DJE 2005)

  1. Application of high powered lasers to drilling and completing deep walls.

    SciTech Connect (OSTI)

    Reed, C. B.; Xu, Z.; Parker, R. A.; Gahan, B. C.; Batarseh, S.; Graves, R. M.; Figueroa, H.; Deeg, W.

    2003-07-30T23:59:59.000Z

    High powered laser rock drilling was studied as a revolutionary method for drilling and completing deep gas and oil wells. The objectives of this 2002 to 2003 fiscal year research were to study the concept that large diameter holes can be created by multiple overlapping small beam spots, to determine the ability of lasers to drill rock submerged to some depth in water, to demonstrate the possibilities of lasers for perforating application, and to determine the wavelength effects on rock removal. Laser technology applied to well drilling and completion operations is attractive because it has the potential to reduce drilling time, create a ceramic lining that may eliminate the need for steel casing, provide additional monitor-on-drilling laser sensors and improve well performance through improved perforation. The results from this research will help engineering design on a laser-based well drilling system.

  2. Future Technologies to Enhance Geothermal Energy Recovery

    SciTech Connect (OSTI)

    Roberts, J J; Kaahaaina, N; Aines, R; Zucca, J; Foxall, B; Atkins-Duffin, C

    2008-07-25T23:59:59.000Z

    Geothermal power is a renewable, low-carbon option for producing base-load (i.e., low-intermittency) electricity. Improved technologies have the potential to access untapped geothermal energy sources, which experts estimate to be greater than 100,000 MWe. However, many technical challenges in areas such as exploration, drilling, reservoir engineering, and energy conversion must be addressed if the United States is to unlock the full potential of Earth's geothermal energy and displace fossil fuels. (For example, see Tester et al., 2006; Green and Nix, 2006; and Western Governors Association, 2006.) Achieving next-generation geothermal power requires both basic science and applied technology to identify prospective resources and effective extraction strategies. Lawrence Livermore National Laboratory (LLNL) has a long history of research and development work in support of geothermal power. Key technologies include advances in scaling and brine chemistry, economic and resource assessment, direct use, exploration, geophysics, and geochemistry. For example, a high temperature, multi-spacing, multi-frequency downhole EM induction logging tool (GeoBILT) was developed jointly by LLNL and EMI to enable the detection and orientation of fractures and conductive zones within the reservoir (Figure 1). Livermore researchers also conducted studies to determine how best to stave off increased salinity in the Salton Sea, an important aquatic ecosystem in California. Since 1995, funding for LLNL's geothermal research has decreased, but the program continues to make important contributions to sustain the nation's energy future. The current efforts, which are highlighted in this report, focus on developing an Engineered Geothermal System (EGS) and on improving technologies for exploration, monitoring, characterization, and geochemistry. Future research will also focus on these areas.

  3. Advanced Seismic While Drilling System

    SciTech Connect (OSTI)

    Robert Radtke; John Fontenot; David Glowka; Robert Stokes; Jeffery Sutherland; Ron Evans; Jim Musser

    2008-06-30T23:59:59.000Z

    A breakthrough has been discovered for controlling seismic sources to generate selectable low frequencies. Conventional seismic sources, including sparkers, rotary mechanical, hydraulic, air guns, and explosives, by their very nature produce high-frequencies. This is counter to the need for long signal transmission through rock. The patent pending SeismicPULSER{trademark} methodology has been developed for controlling otherwise high-frequency seismic sources to generate selectable low-frequency peak spectra applicable to many seismic applications. Specifically, we have demonstrated the application of a low-frequency sparker source which can be incorporated into a drill bit for Drill Bit Seismic While Drilling (SWD). To create the methodology of a controllable low-frequency sparker seismic source, it was necessary to learn how to maximize sparker efficiencies to couple to, and transmit through, rock with the study of sparker designs and mechanisms for (a) coupling the sparker-generated gas bubble expansion and contraction to the rock, (b) the effects of fluid properties and dynamics, (c) linear and non-linear acoustics, and (d) imparted force directionality. After extensive seismic modeling, the design of high-efficiency sparkers, laboratory high frequency sparker testing, and field tests were performed at the University of Texas Devine seismic test site. The conclusion of the field test was that extremely high power levels would be required to have the range required for deep, 15,000+ ft, high-temperature, high-pressure (HTHP) wells. Thereafter, more modeling and laboratory testing led to the discovery of a method to control a sparker that could generate low frequencies required for deep wells. The low frequency sparker was successfully tested at the Department of Energy Rocky Mountain Oilfield Test Center (DOE RMOTC) field test site in Casper, Wyoming. An 8-in diameter by 26-ft long SeismicPULSER{trademark} drill string tool was designed and manufactured by TII. An APS Turbine Alternator powered the SeismicPULSER{trademark} to produce two Hz frequency peak signals repeated every 20 seconds. Since the ION Geophysical, Inc. (ION) seismic survey surface recording system was designed to detect a minimum downhole signal of three Hz, successful performance was confirmed with a 5.3 Hz recording with the pumps running. The two Hz signal generated by the sparker was modulated with the 3.3 Hz signal produced by the mud pumps to create an intense 5.3 Hz peak frequency signal. The low frequency sparker source is ultimately capable of generating selectable peak frequencies of 1 to 40 Hz with high-frequency spectra content to 10 kHz. The lower frequencies and, perhaps, low-frequency sweeps, are needed to achieve sufficient range and resolution for realtime imaging in deep (15,000 ft+), high-temperature (150 C) wells for (a) geosteering, (b) accurate seismic hole depth, (c) accurate pore pressure determinations ahead of the bit, (d) near wellbore diagnostics with a downhole receiver and wired drill pipe, and (e) reservoir model verification. Furthermore, the pressure of the sparker bubble will disintegrate rock resulting in an increased overall rates of penetration. Other applications for the SeismicPULSER{trademark} technology are to deploy a low-frequency source for greater range on a wireline for Reverse Vertical Seismic Profiling (RVSP) and Cross-Well Tomography. Commercialization of the technology is being undertaken by first contacting stakeholders to define the value proposition for rig site services utilizing SeismicPULSER{trademark} technologies. Stakeholders include national oil companies, independent oil companies, independents, service companies, and commercial investors. Service companies will introduce a new Drill Bit SWD service for deep HTHP wells. Collaboration will be encouraged between stakeholders in the form of joint industry projects to develop prototype tools and initial field trials. No barriers have been identified for developing, utilizing, and exploiting the low-frequency SeismicPULSER{trademark} source in a

  4. Geothermal direct heat applications program summary

    SciTech Connect (OSTI)

    None

    1982-08-01T23:59:59.000Z

    In 1978, the Department of Energy Division of Geothermal and Hydropower Technologies initiated a program to accelerate the direct use of geothermal energy, in which 23 projects were selected. The projects, all in the western part of the US, cover the use of geothermal energy for space conditioning (heating and cooling) and agriculture (aquaculture and greenhouses). Initially, two projects were slated for industrial processing; however, because of lack of geothermal resources, these projects were terminated. Of the 23 projects, seven were successfully completed, ten are scheduled for completion by the end of 1983, and six were terminated for lack of resources. Each of the projects is being documented from its inception through planning, drilling, and resource confirmation, design, construction, and one year of monitoring. The information is being collected, evaluated, and will be reported. Several reports will be produced, including detailed topical reports on economics, institutional and regulatory problems, engineering, and a summary final report. To monitor progress and provide a forum for exchange of information while the program is progressing, semiannual or annual review meetings have been held with all project directors and lead engineers for the past four years. This is the sixth meeting in that series. Several of the projects which have been terminated are not included this year. Overall, the program has been very successful. Valuable information has been gathered. problems have been encountered and resolved concerning technical, regulatory, and institutional constraints. Most projects have been proven to be economical with acceptable pay-back periods. Although some technical problems have emerged, they were resolved with existing off-the-shelf technologies and equipment. The risks involved in drilling for the resource, the regulatory constraints, the high cost of finance, and large front-end cost remain the key obstacles to the broad development of geothermal direct use applications.

  5. Geothermal: Sponsored by OSTI -- Telephone Flat Geothermal Development...

    Office of Scientific and Technical Information (OSTI)

    Telephone Flat Geothermal Development Project Environmental Impact Statement Environmental Impact Report. Final: Comments and Responses to Comments Geothermal Technologies Legacy...

  6. STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY

    E-Print Network [OSTI]

    Stanford University

    STANFORD GEOTHERMAL PROGRAM STANFORD UNIVERSITY STANFORD, CALIFORNIA 94105 SGP-TR- 61 GEOTHERMAL APPENDIX A: PARTICIPANTS IN THE STANFORD GEOTHERMAL PROGRAM '81/'82 . 60 APPENDIX B: PAPERS PRESENTED through September 30, 1982. The Stanford Geothermal Program conducts interdisciplinary research

  7. Stanford Geothermal Program Final Report

    E-Print Network [OSTI]

    Stanford University

    1 Stanford Geothermal Program Final Report July 1990 - June 1996 Stanford Geothermal Program. THE EFFECTS OF ADSORPTION ON VAPOR-DOMINATED GEOTHERMAL FIELDS.1 1.1 SUMMARY? ..............................................................................................2 1.4 ADSORPTION IN GEOTHERMAL RESERVOIRS ........................................................3

  8. Assessment of the geothermal resources of Carson-Eagle valleys and Big Smoky Valley, Nevada. First annual report, May 1, 1979-May 30, 1980

    SciTech Connect (OSTI)

    Trexler, D.T.; Koenig, B.A.; Flynn, T.; Bruce, J.L.

    1980-01-01T23:59:59.000Z

    Two geothermal investigations were completed in three Nevada locations. The regions studied were selected from areas outlined as having direct utilization potential (Trexler and others, 1979) and included the Carson-Eagle Valley, Bis Smoky Valley and Caliente. Studies were organized around the completion of a group of tasks in each area. These tasks included: geologic reconnaissance, gravity surveys, aerial photography, fluid sampling and analysis, shallow depth temperature probe surveys, soil mercury surveys, shallow electrical resistivity measurements, and temperature gradient hole drilling. Goals of the project were to provide regional information about the nature and extent of the resources and to offer a critical evaluation of the techniques employed. Results from the work in the Carson-Eagle Valley and Big Smoky Valley are presented. (MHR)

  9. Temporary Bridging Agents for Use in Drilling and Completions of EGS

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop materials or systems that bridge to seal or divert flow from fractures existing while drilling EGS wells or in injection formation and that eventually decompose thereby leaving the fractures unsealed and undamaged.

  10. PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011

    E-Print Network [OSTI]

    Stanford University

    geochemical and geophysical surveys as well as drilling temperature gradient holes (Sudarman et al, 1986 at Wayang Windu including 17 active production wells, two active reinjection wells and five slim holes and boundary conditions were defined based on available data from the drilled area. The distribution

  11. Finite Element Modeling of Drilling Using DEFORM

    E-Print Network [OSTI]

    Gardner, Joel D.; Dornfeld, David

    2006-01-01T23:59:59.000Z

    Vijayaraghavan, A. (2005), “Drilling of Fiber- ReinforcedFINITE ELEMENT MODELING OF DRILLING USING DEFORM J. Gardner,of Comprehensive Drilling Simulation Tool” ABSTRACT DEFORM-

  12. Guidebook to Geothermal Finance

    SciTech Connect (OSTI)

    Salmon, J. P.; Meurice, J.; Wobus, N.; Stern, F.; Duaime, M.

    2011-03-01T23:59:59.000Z

    This guidebook is intended to facilitate further investment in conventional geothermal projects in the United States. It includes a brief primer on geothermal technology and the most relevant policies related to geothermal project development. The trends in geothermal project finance are the focus of this tool, relying heavily on interviews with leaders in the field of geothermal project finance. Using the information provided, developers and investors may innovate in new ways, developing partnerships that match investors' risk tolerance with the capital requirements of geothermal projects in this dynamic and evolving marketplace.

  13. Geothermal: Sponsored by OSTI -- Geothermal Power Generation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Power Generation - A Primer on Low-Temperature, Small-Scale Applications Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About...

  14. Geothermal: Sponsored by OSTI -- Geothermal Greenhouse Information...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Greenhouse Information Package Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New Hot Docs News...

  15. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    Hvalfjordur Fjord area, re: Heat flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples...

  16. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    Latera area, Tuscany, re: Heat Flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples...

  17. Geothermal Literature Review At International Geothermal Area...

    Open Energy Info (EERE)

    Taupo, North Island, re: Heat Flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples...

  18. Geothermal Well and Heat Flow Data for the United States (Southern Methodist University (SMU) Geothermal Laboratory)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Blackwell, D.D. and others

    Southern Methodist University makes two databases and several detailed maps available. The Regional Heat Flow Database for the United States contains information on primarily regional or background wells that determine the heat flow for the United States; temperature gradients and conductivity are used to generate heat flow measurements. Information on geology of the location, porosity, thermal conductivity, water table depth, etc. are also included when known. There are usually three data files for each state or region. The first files were generated in 1989 for the data base creating the Decade of North America Geology (DNAG) Geothermal Map. The second set is from 1996 when the data base was officially updated for the Department of Energy. The third set is from 1999 when the Western U.S. High Temperature Geothermal data base was completed. As new data is received, the files continue to be updated. The second major resource is the Western Geothermal Areas Database, a database of over 5000 wells in primarily high temperature geothermal areas from the Rockies to the Pacific Ocean. The majority of the data are from company documents, well logs, and publications with drilling dates ranging from 1960 to 2000. Many of the wells were not previously accessible to the public. Users will need to register, but will then have free, open access to the databases. The contents of each database can be viewed and downloaded as Excel spreadsheets. See also the heat flow maps at http://www.smu.edu/geothermal/heatflow/heatflow.htm

  19. Inventory of geothermal resources in Nebraska. Final report

    SciTech Connect (OSTI)

    Gosnold, W.D.; Eversoll, D.A.

    1983-06-30T23:59:59.000Z

    The goal of the State Coupled Resource Assessment Program is to identify and evaluate geothermal resources in the state, particularly low-temperature potential. Eight tasks were identified and documented in this report as follows: bottom-hole temperature survey, heat flow and temperature gradient survey, data translation studies, gravity data, substate regions, information dissemination, state geothermal map, and reports. The project had three major products: (1) a map, Geothermal Resources of Nebraska; (2) a significant amount of thermal data collected and documented within the state; and (3) a series of publications, presentations and meetings (documented as an Appendix).

  20. GEOTHERM Data Set

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    DeAngelo, Jacob

    GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey.

  1. Geothermal Technologies Newsletter Archives

    Broader source: Energy.gov [DOE]

    Here you'll find past issues of the U.S. Department of Energy's (DOE) Geothermal Technologies program newsletter, which features information about its geothermal research and development efforts....

  2. Managed pressure drilling techniques and tools 

    E-Print Network [OSTI]

    Martin, Matthew Daniel

    2006-08-16T23:59:59.000Z

    The economics of drilling offshore wells is important as we drill more wells in deeper water. Drilling-related problems, including stuck pipe, lost circulation, and excessive mud cost, show the need for better drilling ...

  3. Combination drilling and skiving tool

    DOE Patents [OSTI]

    Stone, William J. (Kansas City, MO)

    1989-01-01T23:59:59.000Z

    A combination drilling and skiving tool including a longitudinally extending hollow skiving sleeve slidably and concentrically mounted on a right-handed twist drill. Dogs or pawls provided on the internal periphery of the skiving sleeve engage with the helical grooves of the drill. During a clockwise rotation of the tool, the drill moves downwardly and the sleeve translates upwardly, so that the drill performs a drilling operation on a workpiece. On the other hand, the drill moves upwardly and the sleeve translates downwardly, when the tool is rotated in a counter-clockwise direction, and the sleeve performs a skiving operation. The drilling and skiving operations are separate, independent and exclusive of each other.

  4. RECIPIENT:Potter Drilling Inc

    Broader source: Energy.gov (indexed) [DOE]

    Potter Drilling Inc u.s. DEPARTUEN T OF ENERG EERE PROJECT MANAGEMENT CENT ER NEPA DEIERlIINATION PROJECr TITLE: Development of a Hydrothermal Spallation Drilling System for EGS...

  5. Completion and testing report: INEL Geothermal Exploratory Well One (INEL-1)

    SciTech Connect (OSTI)

    Prestwich, S.M.; Bowman, J.A.

    1980-02-01T23:59:59.000Z

    INEL Geothermal Exploratory Well One (INEL-1) was drilled in search of a goethermal resource beneath the Snake River Plain for use at the Chemical Processing Plant (CPP) on the Idaho National Engineering Laboratory Site. The drilling site was selected as the most promising location within reasonable distance of the CPP. The resource was thought to be located at a depth near 7500 ft (2300 m). Neither significant production nor high temperatures were noted at that depth, and the well was then drilled to 10,333 ft (3150 m) with similar findings. Rock cores, geophysical logs, and hydrologic tests of the well to date indicate that no useful geothermal resource exists at this location. Information is presented on the drilling, completion, and testing of INEL-1.

  6. Geopressured geothermal bibliography. Volume III. (Geopressure thesaurus). Second edition

    SciTech Connect (OSTI)

    Sepehrnoori, K.; Carter, F.; Schneider, R.; Street, S.; McGill, K.

    1985-05-01T23:59:59.000Z

    This thesaurus of terminology associated with the geopressured geothermal energy field has been developed as a part of the Geopressured Geothermal Information System data base. The subject scope includes: (1) geopressure resource assessment; (2) geology, hydrology, and geochemistry of geopressured systems; (3) geopressure exploration and exploration technology; (4) geopressured reservoir engineering and drilling technology; (5) economic aspects; (6) environmental aspects; (7) legal, institutional, and sociological aspects; (8) electrical and nonelectrical utilization; and (9) other energy sources, especially methane and other fossil fuel reserves, associated with geopressured reservoirs.

  7. Geothermal resources of Sao Miguel Island, Azores, Portugal

    SciTech Connect (OSTI)

    Duffield, W.A.; Muffler, L.J.P.

    1984-01-01T23:59:59.000Z

    Geothermal studies were carried out on the island of Sao Miguel, Azores to characterize the nature of the resource, to estimate its magnitude, and to identify target areas toward which exploration and developmental drilling might be directed. The main geothermal resource areas are Furnas, Agua de Pau, and Sete Cidades, three Quaternary silicic volcanic centers characterized by summit calderas beneath which magmatic heat sources provide thermal energy to overlying hydrothermal convection systems. For each of the systems, the studies have defined the size of the system, the subsurface temperature, the thermodynamic state of fluid in the system, the chemical composition of the fluid, and permeable parts of the system. 8 figs. (ACR)

  8. South Dakota geothermal handbook

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    The sources of geothermal fluids in South Dakota are described and some of the problems that exist in utilization and materials selection are described. Methods of heat extraction and the environmental concerns that accompany geothermal fluid development are briefly described. Governmental rules, regulations and legislation are explained. The time and steps necessary to bring about the development of the geothermal resource are explained in detail. Some of the federal incentives that encourage the use of geothermal energy are summarized. (MHR)

  9. Geothermal Industry Partnership Opportunities

    Broader source: Energy.gov [DOE]

    Here you'll find links to information about partnership opportunities and programs for the geothermal industry.

  10. Other Geothermal Energy Publications

    Broader source: Energy.gov [DOE]

    Here you'll find links to other organization's publications — including technical reports, newsletters, brochures, and more — about geothermal energy.

  11. Methods and apparatus for removal and control of material in laser drilling of a borehole

    DOE Patents [OSTI]

    Rinzler, Charles C; Zediker, Mark S; Faircloth, Brian O; Moxley, Joel F

    2014-01-28T23:59:59.000Z

    The removal of material from the path of a high power laser beam during down hole laser operations including drilling of a borehole and removal of displaced laser effected borehole material from the borehole during laser operations. In particular, paths, dynamics and parameters of fluid flows for use in conjunction with a laser bottom hole assembly.

  12. Geothermal technology publications and related reports: a bibliography, January 1984-December 1985

    SciTech Connect (OSTI)

    Cooper, D.L. (ed.)

    1986-09-01T23:59:59.000Z

    Technological limitations restrict the commercial availability of US geothermal resources and prevent effective evaluation of large resources, as magma, to meet future US needs. The US Department of Energy has asked Sandia to serve as the lead laboratory for research in Geothermal Technologies and Magma Energy Extraction. In addition, technology development and field support has been provided to the US Continental Scientific Drilling Program. Published results for this work from January 1984 through December 1985 are listed in this bibliography.

  13. Geothermal progress monitor. Progress report No. 3, March-April 1980

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    Progress is reviewed in the following areas: electric uses; direct heat uses; drilling activities; exploration; leases; outreach and technical assistance; feasibility studies and application demonstrations; geothermal loan guarantee program; general activities; R and D activities; legal, institutional, and regulatory activities; environmental activities; and state, local, and private sector activities. Also included are a list of reports and publications and a directory of individuals in the geothermal community. (MHR)

  14. Summary of geothermal exploration activity in the State of Washington from 1978 to 1983. Final report

    SciTech Connect (OSTI)

    Korosec, M.A.

    1984-01-01T23:59:59.000Z

    Project activity is summarized with references to the publications produced. Project findings are reported as they relate to specific geothermal resource target areas. Some major projects of the goethermal exploration program are: thermal and mineral spring chemistry, heat flow drilling, temperature gradient measurements, Cascade Range regional gravity, geohydrology study of the Yakima area, low temperature geothermal resources, geology, geochemistry of Cascade Mountains volcanic rocks, and soil mercury studies. (MHR)

  15. Geothermal energy in Nevada

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    The nature of goethermal resources in Nevada and resource applications are discussed. The social and economic advantages of utilizing geothermal energy are outlined. Federal and State programs established to foster the development of geothermal energy are discussed. The names, addresses, and phone numbers of various organizations actively involved in research, regulation, and the development of geothermal energy are included. (MHR)

  16. November 2002 OCEAN DRILLING PROGRAM

    E-Print Network [OSTI]

    November 2002 OCEAN DRILLING PROGRAM LEG 208 SCIENTIFIC PROSPECTUS EARLY CENOZOIC EXTREME CLIMATES -------------------------------- Dr. Jack Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University Leg Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery

  17. Laser Drilling - Drilling with the Power of Light

    SciTech Connect (OSTI)

    Iraj A. Salehi; Brian C. Gahan; Samih Batarseh

    2007-02-28T23:59:59.000Z

    Gas Technology Institute (GTI) has been the leading investigator in the field of high power laser applications research for well construction and completion applications. Since 1997, GTI (then as Gas Research Institute- GRI) has investigated several military and industrial laser systems and their ability to cut and drill into reservoir type rocks. In this report, GTI continues its investigation with a 5.34 kW ytterbium-doped multi-clad high power fiber laser (HPFL). When compared to its competitors; the HPFL represents a technology that is more cost effective to operate, capable of remote operations, and requires considerably less maintenance and repair. Work performed under this contract included design and implementation of laboratory experiments to investigate the effects of high power laser energy on a variety of rock types. All previous laser/rock interaction tests were performed on samples in the lab at atmospheric pressure. To determine the effect of downhole pressure conditions, a sophisticated tri-axial cell was designed and tested. For the first time, Berea sandstone, limestone and clad core samples were lased under various combinations of confining, axial and pore pressures. Composite core samples consisted of steel cemented to rock in an effort to represent material penetrated in a cased hole. The results of this experiment will assist in the development of a downhole laser perforation or side tracking prototype tool. To determine how this promising laser would perform under high pressure in-situ conditions, GTI performed a number of experiments with results directly comparable to previous data. Experiments were designed to investigate the effect of laser input parameters on representative reservoir rock types of sandstone and limestone. The focus of the experiments was on laser/rock interaction under confining pressure as would be the case for all drilling and completion operations. As such, the results would be applicable to drilling, perforation, and side tracking applications. In the past, several combinations of laser and rock variables were investigated at standard conditions and reported in the literature. More recent experiments determined the technical feasibility of laser perforation on multiple samples of rock, cement and steel. The fiber laser was capable of penetrating these materials under a variety of conditions, to an appropriate depth, and with reasonable energy requirements. It was determined that fiber lasers are capable of cutting rock without causing damage to flow properties. Furthermore, the laser perforation resulted in permeability improvements on the exposed rock surface. This report has been prepared in two parts and each part may be treated as a stand-alone document. Part 1 (High Energy Laser Drilling) includes the general description of the concept and focuses on results from experiments under the ambient lab conditions. Part 2 (High Energy Laser Perforation and Completion Techniques) discusses the design and development of a customized laser pressure cell; experimental design and procedures, and the resulting data on pressure-charged samples exposed to the laser beam. An analysis provides the resulting effect of downhole pressure conditions on the laser/rock interaction process.

  18. Well drilling tool

    SciTech Connect (OSTI)

    Fox, F.K.

    1981-04-07T23:59:59.000Z

    There is disclosed a turbodrill having an axial thrust bearing section which is contained within a lubricant chamber arranged within an annular space between the case and shaft of the turbodrill above the turbine section, and which is defined between means sealing between the shaft and the case which, in use of the turbodrill, are above the drilling fluid circulating therethrough.

  19. Drilling subsurface wellbores with cutting structures

    DOE Patents [OSTI]

    Mansure, Arthur James (Alburquerque, NM); Guimerans, Rosalvina Ramona (The Woodlands, TX)

    2010-11-30T23:59:59.000Z

    A system for forming a wellbore includes a drill tubular. A drill bit is coupled to the drill tubular. One or more cutting structures are coupled to the drill tubular above the drill bit. The cutting structures remove at least a portion of formation that extends into the wellbore formed by the drill bit.

  20. Development of a high-temperature diagnostics-while-drilling tool.

    SciTech Connect (OSTI)

    Chavira, David J.; Huey, David (Stress Engineering Services, Inc.); Hetmaniak, Chris (Stress Engineering Services, Inc.); Polsky, Yarom; King, Dennis K.; Jacobson, Ronald David; Blankenship, Douglas Alan; Knudsen, Steven Dell; Henfling, Joseph Anthony; Mansure, Arthur James

    2009-01-01T23:59:59.000Z

    The envisioned benefits of Diagnostics-While-Drilling (DWD) are based on the principle that high-speed, real-time information from the downhole environment will promote better control of the drilling process. Although in practice a DWD system could provide information related to any aspect of exploration and production of subsurface resources, the current DWD system provides data on drilling dynamics. This particular set of new tools provided by DWD will allow quicker detection of problems, reduce drilling flat-time and facilitate more efficient drilling (drilling optimization) with the overarching result of decreased drilling costs. In addition to providing the driller with an improved, real-time picture of the drilling conditions downhole, data generated from DWD systems provides researchers with valuable, high fidelity data sets necessary for developing and validating enhanced understanding of the drilling process. Toward this end, the availability of DWD creates a synergy with other Sandia Geothermal programs, such as the hard-rock bit program, where the introduction of alternative rock-reduction technologies are contingent on the reduction or elimination of damaging dynamic effects. More detailed descriptions of the rationale for the program and early development efforts are described in more detail by others [SAND2003-2069 and SAND2000-0239]. A first-generation low-temperature (LT) DWD system was fielded in a series of proof-of-concept tests (POC) to validate functionality. Using the LT system, DWD was subsequently used to support a single-laboratory/multiple-partner CRADA (Cooperative Research and Development Agreement) entitled Advanced Drag Bits for Hard-Rock Drilling. The drag-bit CRADA was established between Sandia and four bit companies, and involved testing of a PDC bit from each company [Wise, et al., 2003, 2004] in the same lithologic interval at the Gas Technology Institute (GTI) test facility near Catoosa, OK. In addition, the LT DWD system has been fielded in cost-sharing efforts with an industrial partner to support the development of new generation hard-rock drag bits. Following the demonstrated success of the POC DWD system, efforts were initiated in FY05 to design, fabricate and test a high-temperature (HT) capable version of the DWD system. The design temperature for the HT DWD system was 225 C. Programmatic requirements dictated that a HT DWD tool be developed during FY05 and that a working system be demonstrated before the end of FY05. During initial design discussions regarding a high-temperature system it was decided that, to the extent possible, the HT DWD system would maintain functionality similar to the low temperature system, that is, the HT DWD system would also be designed to provide the driller with real-time information on bit and bottom-hole-assembly (BHA) dynamics while drilling. Additionally, because of time and fiscal constraints associated with the HT system development, the design of the HT DWD tool would follow that of the LT tool. The downhole electronics package would be contained in a concentrically located pressure barrel and the use of externally applied strain gages with thru-tool connectors would also be used in the new design. Also, in order to maximize the potential wells available for the HT DWD system and to allow better comparison with the low-temperature design, the diameter of the tool was maintained at 7-inches. This report discusses the efforts associated with the development of a DWD system capable of sustained operation at 225 C. This report documents work performed in the second phase of the Diagnostics-While-Drilling (DWD) project in which a high-temperature (HT) version of the phase 1 low-temperature (LT) proof-of-concept (POC) DWD tool was built and tested. Descriptions of the design, fabrication and field testing of the HT tool are provided. Background on prior phases of the project can be found in SAND2003-2069 and SAND2000-0239.

  1. The Geysers Geothermal Field Update1990/2010

    E-Print Network [OSTI]

    Brophy, P.

    2012-01-01T23:59:59.000Z

    in Geysers geothermal cooling towers.   Geothermal in  Geysers  Geothermal  Cooling  Towers.   Aminzadeh, processes  –  Geothermal  resources  near  cooling 

  2. The Snake River Geothermal Drilling Project - Innovative Approaches...

    Open Energy Info (EERE)

    a complete record of the volcanic stratigraphy that can be used in complementary science projects. This project will function in tandem with Project Hotspot, a continental...

  3. Percussive Hammer Enables Geothermal Drilling | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM5Parabolic Trough Parabolic TroughofPennsylvaniaPercussive

  4. Geothermal Drilling Success at Blue Mountain, Nevada | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI Reference LibraryAdd to library WebWestern United

  5. Laser Drills Could Relight Geothermal Energy Dreams | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLEDControlDepartment

  6. Odessa fabricator builds rig specifically for geothermal drilling |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferAprilOverviewEfficiency ImprovementsOctober XX, 2009Drew BittnerDepartment

  7. Handbook of Best Practices for Geothermal Drilling | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopmentHEADQUARTERSOutreachApril 23,handbook focuses on

  8. Percussive Hammer Enables Geothermal Drilling | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEWResponse(Expired) |CERCLACompensation »Percussive Hammer Enables

  9. Bureau of Land Management - Geothermal Drilling Permit | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LP Biomass Facility Jump to:Brunei:HillBureau of

  10. Handbook of Best Practices for Geothermal Drilling | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI ReferenceJumpEnergyStrategy | OpenHalf HollowRoadsCounty Wind

  11. Historical Exploration And Drilling Data From Geothermal Prospects And

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel Jump to: navigation,Jersey: EnergySpain) Jump to: navigation,

  12. EUROPEAN GEOTHERMAL DRILLING EXPERIENCE- PROBLEM AREAS AND CASE STUDIES

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found The itemAIR57451 CleanFOR IMMEDIATEDurable 19 14

  13. DOE and Navy Collaborate on Geothermal Drilling Technology | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractionsMaterials |Production |DistribuTECH |DOE and

  14. Safety Measures a hinder for Geothermal Drilling | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey Jump to:WY) JumpLandSRT JumpSMUDSafesky

  15. Development of a Hydrothermal Spallation Drilling System for EGS Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:DetroitOpenSystemMEQ in EGSProject |

  16. The Snake River Geothermal Drilling Project - Innovative Approaches to

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolarTharaldson Ethanol LLC Jump to:Uncertainty

  17. Title 11 Alaska Administrative Code 87 Geothermal Drilling and Conservation

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolarTharaldson EthanolTillson, New5661°,Open Energy| Open Energy

  18. The Iea'S Role In Advanced Geothermal Drilling | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with formSoutheasternInformationPolicy |EnvironmentalInformationThe Iea'S

  19. Evaluation of Emerging Technology for Geothermal Drilling and Logging

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisoryStandardGeneration |10 DOEGoalsEvaluation Report:fromApplications |

  20. Geothermal Drilling of New England | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGermanFifeGEXAGarnetInformation District Heating