Sample records for microresistivity log modeling

  1. Log-Linear Models, MEMMs, and CRFs Michael Collins

    E-Print Network [OSTI]

    Yang, Junfeng

    labeled examples, {(xi, yi)}n i=1. The log-likelihood function is L(w) = n i=1 log p(yi|xi; w) We can think of L(w) as being a function that for a given w measures how well w explains the labeled examples a high value for L(w). The maximum-likelihood estimates are w = arg max wRd n i=1 log p(yi|xi; w

  2. Forward Modeling of the Induction Log Response of a Fractured Geologic Formation

    E-Print Network [OSTI]

    Bray, Steven Hunter

    2013-05-02T23:59:59.000Z

    3.1 Layered Earth Model The environment used for the induction log simulations is a layered Earth model. The model consists of six layers that are assigned different thicknesses and conductivities based on the desired induction log... Tx-Rx pair has a fixed separation and is moved along a vertical profile through the subsurface taking measurements at predetermined logging points. 20 The second change to the original Seatem code involves the surrounding environment. The code...

  3. Forward Modeling of the Induction Log Response of a Fractured Geologic Formation 

    E-Print Network [OSTI]

    Bray, Steven Hunter

    2013-05-02T23:59:59.000Z

    3.1 Layered Earth Model The environment used for the induction log simulations is a layered Earth model. The model consists of six layers that are assigned different thicknesses and conductivities based on the desired induction log... Tx-Rx pair has a fixed separation and is moved along a vertical profile through the subsurface taking measurements at predetermined logging points. 20 The second change to the original Seatem code involves the surrounding environment. The code...

  4. Log-domain circuit models of chemical reactions

    E-Print Network [OSTI]

    Mandal, Soumyajit

    We exploit the detailed similarities between electronics and chemistry to develop efficient, scalable bipolar or subthreshold log-domain circuits that are dynamically equivalent to networks of chemical reactions. Our ...

  5. Proposed geologic model based on geophysical well logs

    SciTech Connect (OSTI)

    Diaz C, S.; Puente C, I.; de la Pena L, A.

    1981-01-01T23:59:59.000Z

    An investigation of the subsurface based on a qualitative interpretation of well logs was carried out at Cerro Prieto to obtain information on the distribution of the different lithofacies that make up a deltaic depositional system. The sedimentological interpretation derived from the resistivity and spontaneous potential are shown in several cross-sections of the field. In addition to the sedimentological interpretation, a map of the structural geology of the region based on well logs and available geophysical information was prepared, including the results of gravity and seismic refraction surveys. The depth to the zone of hydrothermal alteration described by Elders (1980) was found by means of temperature, electrical, and radioactive logs. Two maps showing the configuration of the top of this anomaly show a clear correlation with the gravity anomalies found in the area.

  6. Change Log

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

    Log NERSC-8 Trinity Benchmarks Change Log 09032013 Correction applied to MiniDFT web-page (to remove inconsistency with MiniDFT README). Capability Improvement measurements...

  7. Modeling of capillary pressure behavior using standard open hole wireline log data: Demonstrated on carbonates from the Middle East

    SciTech Connect (OSTI)

    Ross, C.M. [Rice Univ., Houston, TX (United States); Callender, C.A.; Turbeville, J.B. [and others

    1995-12-31T23:59:59.000Z

    A new technique was developed to model capillary pressure behavior from wireline log data and applied to carbonate reservoir rock from a Saudi Aramco field. The method utilizes image analysis of petrographic thin sections, capillary pressure measurements, and neural network analysis of standard open hole wireline log data. Twenty capillary pressure curves and their associated pore type proportions (identified in thin section) are the basis for the capillary pressure predictive model for the reservoir interval under study. Neural network analysis of the wireline log data was used to continuously predict pore type proportions downhole. The neural network-derived pore proportions were than applied in constructing wireline log-based capillary pressure curves using the capillary pressure predictive model. This method provides an accurate means of determining capillary pressure behavior from wireline log data and extends the applicability of the limited number of available capillary pressure curves. Once trained, the neural network may be applied to other wells in the field as long as the training set (both rock samples and wireline log types) is representative within the study area. The capillary pressure curves predicted from wireline log data can be used for the same purposes as capillary pressure curves measured on core samples, such as determining water saturation in intervals above and within the transition zone.

  8. State-Of-The-Art in Permeability Determination From Well Log Data: Part 2-Verifiable, Accurate Permeability Predictions, the Touch-Stone of All Models

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 30979 State-Of-The-Art in Permeability Determination From Well Log Data: Part 2- Verifiable prediction from well log data, is accurate and verifiable prediction of permeability for wells from which only the well log data is available. So far all the available models and techniques have been tried

  9. Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling

    SciTech Connect (OSTI)

    Mukhopadhyay, S.; Tsang, Y.; Finsterle, S.

    2009-01-15T23:59:59.000Z

    A simple conceptual model has been recently developed for analyzing pressure and temperature data from flowing fluid temperature logging (FFTL) in unsaturated fractured rock. Using this conceptual model, we developed an analytical solution for FFTL pressure response, and a semianalytical solution for FFTL temperature response. We also proposed a method for estimating fracture permeability from FFTL temperature data. The conceptual model was based on some simplifying assumptions, particularly that a single-phase airflow model was used. In this paper, we develop a more comprehensive numerical model of multiphase flow and heat transfer associated with FFTL. Using this numerical model, we perform a number of forward simulations to determine the parameters that have the strongest influence on the pressure and temperature response from FFTL. We then use the iTOUGH2 optimization code to estimate these most sensitive parameters through inverse modeling and to quantify the uncertainties associated with these estimated parameters. We conclude that FFTL can be utilized to determine permeability, porosity, and thermal conductivity of the fracture rock. Two other parameters, which are not properties of the fractured rock, have strong influence on FFTL response. These are pressure and temperature in the borehole that were at equilibrium with the fractured rock formation at the beginning of FFTL. We illustrate how these parameters can also be estimated from FFTL data.

  10. High-energy photon transport modeling for oil-well logging

    E-Print Network [OSTI]

    Johnson, Erik D., Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    Nuclear oil well logging tools utilizing radioisotope sources of photons are used ubiquitously in oilfields throughout the world. Because of safety and security concerns, there is renewed interest in shifting to ...

  11. Can reductions in logging damage increase carbon storage over time? Evaluation of a simulation model for a pilot carbon offset project in Malaysia

    SciTech Connect (OSTI)

    Pinard, M.A. [Univ. of Florida, Gainesville, FL (United States)

    1995-09-01T23:59:59.000Z

    Selective timber harvesting operations, if uncontrolled, can severely degrade a forest. Although techniques for reducing logging damage are well-known and inexpensive to apply, incentives to adopt these techniques are generally lacking. Power companies and other emitters of {open_quotes}greenhouse{close_quotes} gases soon may be forced to reduce or otherwise offset their net emissions; one offset option is to fund programs aimed at reducing logging damage. To investigate the consequences of reductions in logging damage for ecosystem carbon storage, I constructed a model to simulate changes in biomass and carbon pools following logging of primary dipterocarp forests in southeast Asia. I adapted a physiologically-driven, tree-based model of natural forest gap dynamics (FORMIX) to simulate forest recovery following logging. Input variables included stand structure, volume extracted, stand damage (% stems), and soil disturbance (% area compacted). Output variables included total biomass, tree density, and total carbon storage over time. Assumptions of the model included the following: (1) areas with soil disturbances have elevated probabilities of vine colonization and reduced rates of tree establishment, (2) areas with broken canopy but no soil disturbance are colonized initially by pioneer tree species and 20 yr later by persistent forest species, (3) damaged trees have reduced growth and increased mortality rates. Simulation results for two logging techniques, conventional and reduced-impact logging, are compared with data from field studies conducted within a pilot carbon offset project in Sabah, Malaysia.

  12. Change Log

    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 for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamos LaboratoryCertified Reference MaterialsChange Log

  13. ILLEGAL LOGGING IN INDONESIA

    E-Print Network [OSTI]

    ILLEGAL LOGGING IN INDONESIA THE ENVIRONMENTAL, ECONOMIC AND SOCIAL COSTS #12;ILLEGAL LOGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 II. Environmental Impacts of Illegal Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 #12;ILLEGAL LOGGING IN INDONESIA | 2 Executive Summary Indonesia's rainforests are the third

  14. SSC dipole log manget model cryostat design and initial production experience

    SciTech Connect (OSTI)

    Niemann, R.C.; Carson, J.A.; Engler, N.H.; Gonczy, J.D.; Nicol, T.H.

    1986-06-01T23:59:59.000Z

    The SSC dipole magnet development program includes the design and construction of full length magnet models for heat leak and magnetic measurements and for the evaluation of the performance of strings of magnets. The design of the model magnet cryostat is presented and the production experiences for the initial long magnet model, a heat leak measurement device, are related.

  15. A simulation model for determining the productivity and costs associated with a mobile small-log sawmill

    E-Print Network [OSTI]

    Rogers, Kenneth E

    1975-01-01T23:59:59.000Z

    accepts small logs and reduces them to a rectangular cant by m ans of a series of cutterheads. The cant is immediately reduced to one-inch or two ? inch lumber with a gangsaw. If the log is of sufficient size to produce a crosstie, the option exists... D ) ? !O. DQ MIB. SHOR1EST 2:M TO MOVE(TLVLQN) - 8. 00 MZU. LOG CHARACTERIS IC INPUT DIAMETER MEAN(DIMELN) ? 7. 00 I!ICHES DIAMETER STD. DEV. (D STDE) - 1. 00 INCHES SMALLEST POSSIBLE DIA. LTER(DILOV) - 6. 00 INCHES LARGEST POSSZBL DIMKTER( I...

  16. Modeling Mud-Filtrate Invasion Effects on Resistivity Logs to Estimate Permeability of Vuggy and Fractured Carbonate Formations

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    measurements with conventional and non- conventional well logs to calculate static and dynamic petrophysical/or fractures in the displacement of hydrocarbons by mud filtrate. Introduction Permeability estimation is one

  17. model.log

    E-Print Network [OSTI]

    ... interlingua, ibycus, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish, portuguese, pinyin, romanian, russian, slovene, uppersorbian, serbian, ...

  18. SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale M. O. Eshkalak, SPE, S. D of production from shale gas reservoirs. In this study, synthetic geomechanical logs (Including following-driven models are developed that are capable of generating synthetic geomechanical logs from conventional logs

  19. Wireline logging tool catalog

    SciTech Connect (OSTI)

    Verdier, M.

    1986-01-01T23:59:59.000Z

    This book provides discussions on wireline logging tools. The contents are resistivity, radioactivity, acoustic, formation dip and borehold geometry, formation sampling, and auxiliary services.

  20. Coal-log pipeline system development

    SciTech Connect (OSTI)

    Liu, H.

    1991-12-01T23:59:59.000Z

    Project tasks include: (1) Perform the necessary testing and development to demonstrate that the amount of binder in coal logs can be reduced to 8% or lower to produce logs with adequate strength to eliminate breakage during pipeline transportation, under conditions experienced in long distance pipeline systems. Prior to conducting any testing and demonstration, grantee shall perform an information search and make full determination of all previous attempts to extrude or briquette coal, upon which the testing and demonstration shall be based. (2) Perform the necessary development to demonstrate a small model of the most promising injection system for coal-logs, and tests the logs produced. (3) Conduct economic analysis of coal-log pipeline, based upon the work to date. Refine and complete the economic model. (VC)

  1. Logging in to Hopper

    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 Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to FranklinLogging in

  2. G8 Illegal Logging Dialogue G8 Illegal Logging Dialogue

    E-Print Network [OSTI]

    G8 Illegal Logging Dialogue G8 Illegal Logging Dialogue A global legislator partnership for legal International http://www.illegal-logging.info/item_single.php?item=presentation&item_id=133&approach_id=8 #12;G8 Illegal Logging Dialogue Presentation purpose · role of GLOBE International · aim and objectives of the G8

  3. NMR logging apparatus

    DOE Patents [OSTI]

    Walsh, David O; Turner, Peter

    2014-05-27T23:59:59.000Z

    Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

  4. Modes of log gravity

    SciTech Connect (OSTI)

    Bergshoeff, Eric A.; Rosseel, Jan [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands); Hohm, Olaf [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Townsend, Paul K. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2011-05-15T23:59:59.000Z

    The physical modes of a recently proposed D-dimensional 'critical gravity', linearized about its anti-de Sitter vacuum, are investigated. All 'log mode' solutions, which we categorize as 'spin-2' or 'Proca', arise as limits of the massive spin-2 modes of the noncritical theory. The linearized Einstein tensor of a spin-2 log mode is itself a 'nongauge' solution of the linearized Einstein equations whereas the linearized Einstein tensor of a Proca mode takes the form of a linearized general coordinate transformation. Our results suggest the existence of a holographically dual logarithmic conformal field theory.

  5. Logging in to Franklin

    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 Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to Franklin

  6. ,"_' ",',-i_~ :FORESTRY AND LOGGING

    E-Print Network [OSTI]

    ":~I> ", .' '. ,"_' ",',-i_~ . :FORESTRY AND LOGGING Hcscarch on Plantation Species A Positive in plantation forestry. par- ticularly in the tropics and the Southern Hemisphere. in the past 30 years plantation forestry. Indeed, one could list many exam- ples of such problems that have plagued exotic

  7. Outcrop gamma-ray logging applied to subsurface petroleum geology

    SciTech Connect (OSTI)

    Slatt, R.M.; Borer, J.M.; Horn, B.W. [Colorado School of Mines, Golden, CO (United States)] [and others

    1995-10-01T23:59:59.000Z

    Developing a gamma-ray log profile of an outcrop with a hand-held scintillometer has many applications to subsurface petroleum geology. The outcrop gamma-ray log provides a readily understandable bridge between what is observed in outcrop and what is to be interpreted on well logs and seismic records. Several examples are presented in this paper that demonstrate major applications. An outcrop from the Cretaceous Mesaverde Group in Colorado provides an excellent example of the use of outcrop gamma-ray logs to better visualize spatial variability of depositional settings for improved well log correlations. Out crops from the Cretaceous Almond Formation, Niobrara Formation, and Graneros Shale in Colorado serve as examples of outcrop gamma-ray logging used to correlate outcrops with their subsurface equivalents for improved lithologic and stratigraphic interpretation of well logs. Outcrops of the Cretaceous Sharon Springs Member of the Pierre Shale in Colorado and the Eocene Green River Formation in Wyoming provide examples of the application of outcrop-gamma ray logging to identify and characterize organic-rich shales in outcrops and on well logs. Outcrops of the Pennsylvanian Jackfork Formation in Arkansas demonstrate the use of outcrop logging to yield improved interpretation of reservoir quality on well logs and for one- and two-dimensional seismic modeling. An outcrop of Precambrian and Cambro-Ordovician rocks from Algeria provides an example of outcrop logging to recognize unconformities and other major surfaces on well logs. An outcrop of the Niobrara Formation in Colorado is used as an example for improved understanding of horizontal gamma-ray log response. The example logs presented are all drived with a hand-held scintillometer. This technique is simple, quick, and relatively inexpensive, so is recommended for any outcrop work that is intended to be applied t;o subsurface well logs or seismic interpretation.

  8. Density Log | 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 Facility DatabaseMichigan: Energy ResourcesDenair,Dennis Port,1987) |FishLog

  9. University of Connecticut Daily Temperature Log Specimen Refrigerator Log

    E-Print Network [OSTI]

    Oliver, Douglas L.

    University of Connecticut Daily Temperature Log ­ Specimen Refrigerator Log Month / Year Clinical ___ Fac. Mgmt. Resolution: 31 ___ Fac. Mgmt. Resolution: If the refrigerator temperature falls out refrigerator. This record must be kept for one year and then destroyed per State requirement

  10. NERSC Job Logs and Analytics

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

    For Users Job Logs & Analytics Job Logs & Analytics Queue Status A listing of jobs running and waiting in the queues (NERSC login required). Queue Wait Times Batch Queue Wait...

  11. Log data comparison and quantification

    SciTech Connect (OSTI)

    Mathews, M.; LaDelfe, C.

    1981-01-01T23:59:59.000Z

    Two geothermal wells were logged with similar wireline logs by several logging companies in a period of five years (1974 to 1979). The results of these equivalent logs are quantitatively different and in some cases qualitatively different. This difference also occurs between the same type of logs recorded at different time intervals by the same logging company. These various log data are related and qualified when logging equipment has not been properly calibrated. All depths referred to for either well are from their respective kelly bushing (KB). The first well (Mesa 31-1) is in the Imperial Valley of California and penetrates a sand, shale, and clay sedimentary lithology with a maximum temperature of 165/sup 0/C (330/sup 0/F) and a total depth of 1882 m (6175 ft). The second well (Phillips 9-1) is in the Roosevelt Hot Springs known geothermal resource areas (KGRA) of southwestern Utah and penetrates hydrothermally altered (low-grade metamorphic) and igneous lithology with a maximum temperature of 225/sup 0/C (440/sup 0/F) and a toatl depth of 2098.5 m (6885 ft). During that period (1974 to 1979) calibration of logging equipment in metamorphic and igneous lithologies could not be done. The logging data from this well is not qualitatively comparable in all cases and indicates the need for calibration. The open-hole log data acquired from Mesa 31-1 and Phillips 9-1 wells were compared to core data from these wells and comparison factors were calculated to better quantify the open-hole log data. Then open-hole log data were compared to the cased-hole log data from various companies and additional comparison factors were calculated for the cased-hole log data. These comparison factors allow for some quantification of these uncalibrated log data.

  12. Grid Logging: Best Practices Guide

    SciTech Connect (OSTI)

    Tierney, Brian L; Tierney, Brian L; Gunter, Dan

    2008-04-01T23:59:59.000Z

    The purpose of this document is to help developers of Grid middleware and application software generate log files that will be useful to Grid administrators, users, developers and Grid middleware itself. Currently, most of the currently generated log files are only useful to the author of the program. Good logging practices are instrumental to performance analysis, problem diagnosis, and security auditing tasks such as incident tracing and damage assessment. This document does not discuss the issue of a logging API. It is assumed that a standard log API such as syslog (C), log4j (Java), or logger (Python) is being used. Other custom logging API or even printf could be used. The key point is that the logs must contain the required information in the required format. At a high level of abstraction, the best practices for Grid logging are: (1) Consistently structured, typed, log events; (2) A standard high-resolution timestamp; (3) Use of logging levels and categories to separate logs by detail and purpose; (4) Consistent use of global and local identifiers; and (5) Use of some regular, newline-delimited ASCII text format. The rest of this document describes each of these recommendations in detail.

  13. Australian Government on ILLEGAL logging

    E-Print Network [OSTI]

    Australian Government the AXE on ILLEGAL logging Bringing down a practical approach AN AUSTRALIAN. NOVEMBER 2006 #12;#12;Foreword Illegal logging corrupts the trade in timber-based products and inevitably management of the world's forest resources. Therefore, it is in Australia's interests to stop illegal logging

  14. Grid Logging: Best Practices Guide

    E-Print Network [OSTI]

    Tierney, Brian L

    2008-01-01T23:59:59.000Z

    Revision date: March 1, 2008 Grid Logging: Best Practicesis to help developers of Grid middleware and applicationlog files that will be useful to Grid administrators, users,

  15. Preprocessing and Mining Web Log Data for Web Personalization

    E-Print Network [OSTI]

    Ruggieri, Salvatore

    Preprocessing and Mining Web Log Data for Web Personalization M. Baglioni1 , U. Ferrara2 , A. Romei/26, 56017 S. Martino Ulmiano (PI) Italy ferrara@ksolutions.it Abstract. We describe the web usage mining behaviour of a web site users. The models are inferred from the access logs of a web server by means of data

  16. LOG HAZARD REGRESSION Huiying Sun

    E-Print Network [OSTI]

    Heckman, Nancy E.

    LOG HAZARD REGRESSION by Huiying Sun Ph.D, Harbin Institute of Technology, Harbin, CHINA, 1991 regression splines to estimate the two log marginal hazard func­ tions of bivariate survival times, where, 1995) hazard regression for estimating a univariate survival time. We derive an approach to find

  17. Acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, III, William B. (Bothell, WA)

    1988-01-01T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth3 s magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation . The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores.

  18. Enhanced carbon-oxygen log interpretations using supplemental log curves

    SciTech Connect (OSTI)

    Wyatt, D.F. Jr.; Jacobson, L.A.; Fox, P.

    1994-12-31T23:59:59.000Z

    Supplemental measurements from induced nuclear spectrometry tools are examined to demonstrate what additional information they provide about the well and reservoir conditions. Logs in shut-in wells from Indonesia provide examples of oxygen activation measurements showing cross-flow from one reservoir to another via open perforations. Leaking squeezed perforations were also observed. An example from Alaska shows radioactive scale build-up in the casing which spectral analysis identifies as a mixture of uranium and thorium salts. Another log, where the casing fluid was replaced with crude oil, demonstrates a technique for identifying cement channels. Logs from Nigeria comparing oil saturation estimates before and after a squeeze operation illustrate the effect of casing fluid flushing of the formation through open perforations. Understanding the diagnostic character of these curves leads to higher confidence in the overall log interpretation process.

  19. Information Security Office Logging Standard

    E-Print Network [OSTI]

    Alpay, S. Pamir

    All Approvals Review Date Reviewed By Name/Title Action (Reviewed or Approved) 6/01/2013 CISO Jason Pufahl, CISO Approved 6/01/2013 RMAC Risk Management Advisory Council Reviewed #12;Logging Standard 2 | P

  20. Log quality enhancement: A systematic assessment of logging company wellsite performance and log quality

    SciTech Connect (OSTI)

    Farnan, R.A.; Mc Hattie, C.M.

    1984-01-01T23:59:59.000Z

    To improve the monitoring of logging company performance, computer programs were developed to assess information en masse from log quality check lists completed on wellsite by the service company engineer and Phillips representative. A study of all logging jobs performed by different service companies for Phillips in Oklahoma (panhandle excepted) during 1982 enabled several pertinent and beneficial interpretations to be made. Company A provided the best tool and crew service. Company B incurred an excessive amount of lost time related to tool failure, in particular the neutron-density tool combination. Company C, although used only three times, incurred no lost time. With a reasonable data base valid conclusions were made pertaining, for example, to repeated tool malfunctions. The actual logs were then assessed for quality.

  1. Category:Mud Logging | 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, click here. Category:Conceptual ModelLists forMercury Vapor page?Logging page?

  2. LogRank: Summarizing Social Activity Logs Abhijith Kashyap

    E-Print Network [OSTI]

    Hristidis, Vagelis

    of Barack Obama (managed by his re-election campaign staff). Figure 1 shows a small selection of posts from network profile. With time, the activity logs of users, which record the sequences of social activities in most OSNs, records and displays users' activities (e.g., posts, status updates, comments). The Wall

  3. Detecting Botnets Through Log Correlation

    E-Print Network [OSTI]

    Al-Hammadi, Yousof

    2010-01-01T23:59:59.000Z

    Botnets, which consist of thousands of compromised machines, can cause significant threats to other systems by launching Distributed Denial of Service (SSoS) attacks, keylogging, and backdoors. In response to these threats, new effective techniques are needed to detect the presence of botnets. In this paper, we have used an interception technique to monitor Windows Application Programming Interface (API) functions calls made by communication applications and store these calls with their arguments in log files. Our algorithm detects botnets based on monitoring abnormal activity by correlating the changes in log file sizes from different hosts.

  4. LogOS: an Automatic Logging Framework for Service-Oriented Architectures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LogOS: an Automatic Logging Framework for Service-Oriented Architectures Stéphane Frénot Université our investigations on an automated log-based architec- ture called LogOS, focused on service component-based systems called LogOS, applied to OSGi environments. We believe that services such as found

  5. Daily Log 2009 December 2009

    E-Print Network [OSTI]

    Boyce, Richard L.

    , camcorder and typing machine taken from unlocked cabinet. Report #: 2009-00644 Reported: 12/14/09 1813Daily Log 2009 December 2009 No Reportable Activity on 12/31/09 Report #: 2009-00652 Reported: 12/30/09 2106 Occurred: Same Incident: Parking Complaint Location: Woodcrest Parking Lot Disposition: Report

  6. Logging Equipment and Loren Kellogg

    E-Print Network [OSTI]

    and the control is passed on Automatic inhaul starts and the control is transferred again Photo Credit: KollerLogging Equipment and Systems Loren Kellogg Forest Engineering Resources and Management Oregon Equipment and Systems Presentation Outline · Overview of equipment and systems for thinning · Costs

  7. briefing paper Controlling Illegal Logging

    E-Print Network [OSTI]

    page1 briefing paper Controlling Illegal Logging: Implementation of the EU Timber Regulation Jon placing illegally harvested timber and timber products on the European market. It adopts a broad definition of `illegally harvested' and applies to timber both imported into and produced within the EU

  8. 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.

  9. Tucker Wireline Open Hole Wireline Logging

    SciTech Connect (OSTI)

    Milliken, M.

    2002-05-23T23:59:59.000Z

    The Tucker Wireline unit ran a suite of open hole logs right behind the RMOTC logging contractor for comparison purposes. The tools included Dual Laterolog, Phased Induction, BHC Sonic, and Density-Porosity.

  10. Geological well log analysis. Third ed

    SciTech Connect (OSTI)

    Pirson, S.J.

    1983-01-01T23:59:59.000Z

    Until recently, well logs have mainly been used for correlation, structural mapping, and quantitive evaluation of hydrocarbon bearing formations. This third edition of Geologic Well Log Analysis, however, describes how well logs can be used for geological studies and mineral exploration. This is done by analyzing well logs for numerous parameters and indices of significant mineral accumulation, primarily in sediments. Contents are: SP and Eh curves as redoxomorphic logs; sedimentalogical studies by log curve shapes; exploration for stratigraphic traps; continuous dipmeter as a structural tool; continuous dipmeter as a sedimentation tool; Paleo-facies logging and mapping; hydrogeology 1--hydrodynamics of compaction; hydrogeology 2--geostatic equilibrium; and hydrogeology 3--hydrodynamics of infiltration. Appendixes cover: Computer program for calculating the dip magnitude, azimuth, and the degree and orientation of the resistivity anisotrophy; a lithology computer program for calculating the curvature of a structure; and basic log analysis package for HP-41CV programmable calculator.

  11. Energy Citations Database (ECD) - Alerts Log On

    Office of Scientific and Technical Information (OSTI)

    Log On You must Log On to use the ECD Alerts. Alerts provide users with e-mail notification of updates to the ECD in specific areas of interest. If you wish to receive an Alert and...

  12. Published on Aotearoa Independent Media Centre (http://www.indymedia.org.nz) Home > Some facts on illegal logging and New Zealand

    E-Print Network [OSTI]

    on illegal logging and New Zealand Some facts on illegal logging and New Zealand By Anonymous Created 07/31/2010 - 13:27 [1]Impact of illegally logged timber on New Zealand economy For the New Zealand forestry sector estimates from the Radiata Pine Market Model suggest that the benefit of eliminating illegal logging is a US

  13. Indonesia to fight illegal logging Kurniawan Hari

    E-Print Network [OSTI]

    Indonesia to fight illegal logging Kurniawan Hari The government should set up a task force to deal with rampant illegal logging, mining and poaching, which are causing billions of dollars in state losses hearing on security affairs on Wednesday. Ermaya estimated the loss from illegal logging at US$3.5 billion

  14. Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia

    E-Print Network [OSTI]

    lease agreements and stop all logging permissions for these companies. The Russian Far East #12;ResultsCombating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study and not only `be aware' of illegal logging · G8-related political work #12;Primorsky region: 2000 Initial

  15. Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia

    E-Print Network [OSTI]

    agreements and stop all logging permissions for these companies. The Russian Far East #12;Results: · directCombating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study aware' of illegal logging · G8-related political work #12;Primorsky region: 2000 Initial information

  16. Illegal logging threatens Congo's forests, global climate Illegal logging threatens Congo's forests, global climate

    E-Print Network [OSTI]

    contracts with logging companies covering more than 15 million hectares of forest," the report stated with logging companies instead giving villages gifts of salt and beer worth less than $100. "In a contextIllegal logging threatens Congo's forests, global climate Illegal logging threatens Congo's forests

  17. The Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber

    E-Print Network [OSTI]

    The Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber CINTRAFOR News is available on the web: http://www.cintrafor.org Russian Tariff continued on page 3 In This Issue: Director announced its plan to implement a series of log export tariffs designed to reduce the export of raw logs

  18. Illegal timber logging in Vietnam: Who profits from forest privatization connected with a logging ban?

    E-Print Network [OSTI]

    1 Illegal timber logging in Vietnam: Who profits from forest privatization connected with a logging the distribution of income from illegal timber logging in northern Vietnam. The Vietnamese government implemented because of the demand for timber in lowland markets, illegal timber logging still takes place in many

  19. Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional Facies in Deepwater Turbidite Reservoirs

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPE 166178 Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional. The objective of this paper is to quantitatively classify rock and bed types based on conventional well logs to assist facies interpretation and stratigraphic reservoir modeling. We model physical properties and well

  20. Log interpretation of shaly sandstones

    E-Print Network [OSTI]

    Baker, Joel Foster

    1987-01-01T23:59:59.000Z

    and Gas, Arco Oil and Gas, and Sun Oil Companies for their contributions of cores, logs, and other valuable data. Their contributions were an immense help in formulating and supporting the ideas developed in my study. I also wish to express gratitute... of Water Saturation page . . 78 79 . . 81 . 87 91 93 VI CONCLUSIONS . 104 REFERENCES CITED APPENDIX I REESE INTRACOASTAL LAND ?2 DATA . 107 . . 111 APPENDIX II ARCO HANKAMER 630 ? 1 DATA 133 APPENDIX III SUN SMITH JR. ?8 DATA VITA 152 163...

  1. Mud Logging | 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: navigation, searchOfRose BendMiasole IncMinutemanVistaZephyr)Mountain AirPeakMubadalaLogging

  2. Neutron Log | 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: navigation, searchOfRoseConcerns Jump to:Neppel Wind Power ProjectNeutron Log Jump to:

  3. Request Log Closedl Date Yes

    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:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 % A PB 2 7 7 2 x>16 FOIA - Request Log

  4. Development of Baseline Monthly Utility Models, Stabilization of Data Logging Environment and Development of Metering Plan and Shopping List for Fort Hood, Texas

    E-Print Network [OSTI]

    Saman, N. F.; Reddy, T. A.; Haberl, J. S.; Claridge, D. E.; Turner, W. D.

    1995-01-01T23:59:59.000Z

    sensors) at *ue west substation, and the installation of the ESL's Monitor software for use by the Energy Office at the base. The objective of Task C is to provide a metering plan and shopping list of necessary data points to provide CERL with energy... and EModel, and it was found that EModel gave more accurate modeling results than PRISM, and therefore EModel was used in the analysis. For Task B, a weather station that includes temperature, humidity and solar sensors was installed at the west substation...

  5. Leak checker data logging system

    DOE Patents [OSTI]

    Gannon, Jeffrey C. (Arlington, TX); Payne, John J. (Waterman, IL)

    1996-01-01T23:59:59.000Z

    A portable, high speed, computer-based data logging system for field testing systems or components located some distance apart employs a plurality of spaced mass spectrometers and is particularly adapted for monitoring the vacuum integrity of a long string of a superconducting magnets such as used in high energy particle accelerators. The system provides precise tracking of a gas such as helium through the magnet string when the helium is released into the vacuum by monitoring the spaced mass spectrometers allowing for control, display and storage of various parameters involved with leak detection and localization. A system user can observe the flow of helium through the magnet string on a real-time basis hour the exact moment of opening of the helium input valve. Graph reading can be normalized to compensate for magnet sections that deplete vacuum faster than other sections between testing to permit repetitive testing of vacuum integrity in reduced time.

  6. Leak checker data logging system

    DOE Patents [OSTI]

    Gannon, J.C.; Payne, J.J.

    1996-09-03T23:59:59.000Z

    A portable, high speed, computer-based data logging system for field testing systems or components located some distance apart employs a plurality of spaced mass spectrometers and is particularly adapted for monitoring the vacuum integrity of a long string of a superconducting magnets such as used in high energy particle accelerators. The system provides precise tracking of a gas such as helium through the magnet string when the helium is released into the vacuum by monitoring the spaced mass spectrometers allowing for control, display and storage of various parameters involved with leak detection and localization. A system user can observe the flow of helium through the magnet string on a real-time basis hour the exact moment of opening of the helium input valve. Graph reading can be normalized to compensate for magnet sections that deplete vacuum faster than other sections between testing to permit repetitive testing of vacuum integrity in reduced time. 18 figs.

  7. Log-Sobolev inequalities for subelliptic operators

    E-Print Network [OSTI]

    Fabrice Baudoin

    2012-02-07T23:59:59.000Z

    Log-Sobolev inequalities for subelliptic operators. Fabrice Baudoin. Purdue University. Georgia Tech Probability Seminar. Based on a joint work with M.

  8. Annual Logging Symposium, June 19-23, 2010 IMPROVED ESTIMATION OF MINERAL

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    concentration of shale, and volumetric concentrations of mineral constituents in the presence of complex min- eral compositions, invasion, and shoulder beds. The method assumes a multi-layer reservoir model con concentrations from well logs, core data, and geological logs are nec- essary for the accurate estimation

  9. Dynamical evolution of active detached binaries on log Jo - log M diagram and contact binary formation

    E-Print Network [OSTI]

    Z. Eker; O. Demircan; S. Bilir; Y. Karatas

    2006-09-14T23:59:59.000Z

    Orbital angular momentum (Jo), systemic mass (M) and orbital period (P) distributions of chromospherically active binaries (CAB) and W Ursae Majoris (W UMa) systems were investigated. The diagrams of log Jo - log P, log M - log P and log Jo-log M were formed from 119 CAB and 102 W UMa stars. The log Jo-log M diagram is found to be most meaningful in demonstrating dynamical evolution of binary star orbits. A slightly curved borderline (contact border) separating the detached and the contact systems was discovered on the log Jo - log M diagram. Since orbital size (a) and period (P) of binaries are determined by their current Jo, M and mass ratio q, the rates of orbital angular momentum loss (dlog Jo/dt) and mass loss (dlog M/dt) are primary parameters to determine the direction and the speed of the dynamical evolution. A detached system becomes a contact system if its own dynamical evolution enables it to pass the contact border on the log Jo - log M diagram. Evolution of q for a mass loosing detached system is unknown unless mass loss rate for each component is known. Assuming q is constant in the first approximation and using the mean decreasing rates of Jo and M from the kinematical ages of CAB stars, it has been predicted that 11, 23 and 39 cent of current CAB stars would transform to W UMa systems if their nuclear evolution permits them to live 2, 4 and 6 Gyrs respectively.

  10. CORRUPTION AND ILLEGAL LOGGING IN THE WOOD

    E-Print Network [OSTI]

    Pettenella, Davide

    CORRUPTION AND ILLEGAL LOGGING IN THE WOOD PRODUCTS MARKET: the Italian experience in controlling Science 7 May 2004 Paper organization 1. State of the problem 2. Are Italian companies involved in deforestation and trade of illegal logging? 3. Which are the most affected countries? 4. Why do we need

  11. Coal-log pipeline system development. Fifth quarterly report, August 25, 1991--November 25, 1991

    SciTech Connect (OSTI)

    Liu, H.

    1991-12-01T23:59:59.000Z

    Project tasks include: (1) Perform the necessary testing and development to demonstrate that the amount of binder in coal logs can be reduced to 8% or lower to produce logs with adequate strength to eliminate breakage during pipeline transportation, under conditions experienced in long distance pipeline systems. Prior to conducting any testing and demonstration, grantee shall perform an information search and make full determination of all previous attempts to extrude or briquette coal, upon which the testing and demonstration shall be based. (2) Perform the necessary development to demonstrate a small model of the most promising injection system for coal-logs, and tests the logs produced. (3) Conduct economic analysis of coal-log pipeline, based upon the work to date. Refine and complete the economic model. (VC)

  12. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    George J. Hirasaki; Kishore K. Mohanty

    2005-09-05T23:59:59.000Z

    The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

  13. Logging-while-coring method and apparatus

    DOE Patents [OSTI]

    Goldberg, David S.; Myers, Gregory J.

    2007-01-30T23:59:59.000Z

    A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.

  14. Sugarcane Log Turning Ltd. Business Plan

    E-Print Network [OSTI]

    ; for example, log homes inspired by the Olympic Games, and other homes that will complement the natural look as a business over time. SCLT believes that through working together with both the WLIB and AFRF, a prosperous

  15. Logging-while-coring method and apparatus

    DOE Patents [OSTI]

    Goldberg, David S. (New York, NY); Myers, Gregory J. (Cornwall, NY)

    2007-11-13T23:59:59.000Z

    A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.

  16. Automatic well log correlation using neural networks

    E-Print Network [OSTI]

    Habiballah, Walid Abdulrahim

    1991-01-01T23:59:59.000Z

    AUTOMATIC WELL LOG CORRELATION USING NEURAL NETWORKS A Thesis by WALID ABDULHAHIM HABIBALLAH Submitted to the Office of Graduate Studies of Texas AaM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 1991 Major Subject; Petroleum Engineering AUTOMATIC WELL LOG CORRELATION USING NEURAL NETWORKS A Thesis by WALID ABDULRAHIM HABIBALLAH Approved as to style and content by: R. A. St tzman (Chair of Committee) S. W. Poston (Member) R. R...

  17. Green Energy Resources Inc formerly New York International Log...

    Open Energy Info (EERE)

    International Log Lumber Company Jump to: navigation, search Name: Green Energy Resources Inc (formerly New York International Log & Lumber Company) Place: San Antonio, Texas...

  18. alfa activity log: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  19. abandoned logging roads: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  20. acoustic drillhole logging: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  1. annual logging symposium: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  2. activity log files: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  3. automatic log sorting: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  4. Busted: Illegal Logging in Kenya Daily Nation Newswire

    E-Print Network [OSTI]

    Busted: Illegal Logging in Kenya Daily Nation Newswire Police and Kenya Wildlife Service personnel many merchants were using expired permits. Eighteen people have been arrested for illegal logging

  5. Logging threatens Indonesia's biodiversity By Dianthus Saputra Estey in Jakarta

    E-Print Network [OSTI]

    is illegal logging. "So far, illegal logging is responsible for some 75% of the damage done to Indonesia's forests," he said during a press conference. "I think we have to stop blaming it all on just the illegal logging and start realising that both legal and illegal logging are responsible for our environmental

  6. Category:Cross-Dipole Acoustic Log | 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, click here. Category:Conceptual Model Add.png Add a newpage? ForsovereignLog

  7. Permeability extraction: A sonic log inversion

    SciTech Connect (OSTI)

    Akbar, N.; Kim, J.J. [Saudi Aramco, Dhahran (Saudi Arabia)

    1994-12-31T23:59:59.000Z

    In this paper the authors provide the missing important link between permeability and acoustic velocities by generating a permeability-dependent synthetic sonic log in a carbonate reservoir. The computations are based on Akbar`s theory that relates wave velocity to frequency, rock properties (e.g., lithology, permeability, and porosity), and fluid saturation and properties (viscosity, density, and compressibility). An inverted analytical expression of the theory is used to extract permeability from sonic velocity. The synthetic sonic and the computed permeability are compared with the observed sonic log and with plug permeability, respectively. The results demonstrate, as predicted by theory, that permeability can be related directly to acoustic velocities.

  8. Prospects for Reduced Impact Logging in Central African logging concessions Driss Ezzine de Blas *, Manuel Ruiz Perez 1

    E-Print Network [OSTI]

    prices and increasing demand (Karsenty, 2006a). As a fresh wave of logging companies have resumedProspects for Reduced Impact Logging in Central African logging concessions Driss Ezzine de Blas potential, future expansion and industrialisation of the Central African logging sector: ``Dans un avenir

  9. Advertise Subscribe Log in Register Advanced search

    E-Print Network [OSTI]

    Advertise Subscribe Log in Register Advanced search Home News Comment Special reports People power Europe does not need nuclear power to meet its future energy needs. Question of nuclear subsidies-reduction target would be better. Blowing away nuclear power Europe does not need nuclear power to meet its future

  10. April 27, 2010 Well Logging I

    E-Print Network [OSTI]

    Ito, Garrett

    wells and may be drilled to tap into water or oil/natural gas. Core samples are usually not taken4/26/2010 1 GG450 April 27, 2010 Well Logging I Today's material comes from p. 501-541 in the text book. Please read and understand all of this material! Drilling ­ Exploration and Scientific Holes

  11. Security Event and Log Management Service

    E-Print Network [OSTI]

    Security Event and Log Management Service: Comprehensive, Cost-effective Approach to Enhance Network Security and Security Data Management IBM Global Technology Services December 2007 #12;Executive Summary The economics of network security have changed. The high cost and complexity inherent in the use

  12. 2011 Daily Log Report #: 2011-00168

    E-Print Network [OSTI]

    Boyce, Richard L.

    the washing machine that he was utilizing. Report #: 2011-00160 Reported: 03/28/2011 2045 Occurred: Same2011 Daily Log March 2011 Report #: 2011-00168 Reported: 03/31/2011 1237 Occurred: 03/31/2011 1235 Incident: Medical Emergency Location: Outside of Student Union Disposition: Report--Closed Comments: Female

  13. INSPIRE and SPIRES Log File Analysis

    SciTech Connect (OSTI)

    Adams, Cole; /Wheaton Coll. /SLAC

    2012-08-31T23:59:59.000Z

    SPIRES, an aging high-energy physics publication data base, is in the process of being replaced by INSPIRE. In order to ease the transition from SPIRES to INSPIRE it is important to understand user behavior and the drivers for adoption. The goal of this project was to address some questions in regards to the presumed two-thirds of the users still using SPIRES. These questions are answered through analysis of the log files from both websites. A series of scripts were developed to collect and interpret the data contained in the log files. The common search patterns and usage comparisons are made between INSPIRE and SPIRES, and a method for detecting user frustration is presented. The analysis reveals a more even split than originally thought as well as the expected trend of user transition to INSPIRE.

  14. Toxic species evolution from guayule fireplace logs

    E-Print Network [OSTI]

    Soderman, Kristi Lee

    1988-01-01T23:59:59.000Z

    and cellulosic material from bagasse are generated as co-products of rubber extraction. The cellulosic material uses which are favored at this time require combustion. Bagasse affords the potential for use as biomass fuel in the production of process steam... of chromium, if present in the hexavalent state, no unusually toxic constituents were found in the smoke particulates, gaseous state or as condensible liquids for flaming and smoldering combustion of guayule fireplace logs. Butylhydroxytoluene (BHT), a...

  15. Chiral gravity, log gravity, and extremal CFT

    SciTech Connect (OSTI)

    Maloney, Alexander [Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada); Song Wei [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190 (China); Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States); Strominger, Andrew [Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)

    2010-03-15T23:59:59.000Z

    We show that the linearization of all exact solutions of classical chiral gravity around the AdS{sub 3} vacuum have positive energy. Nonchiral and negative-energy solutions of the linearized equations are infrared divergent at second order, and so are removed from the spectrum. In other words, chirality is confined and the equations of motion have linearization instabilities. We prove that the only stationary, axially symmetric solutions of chiral gravity are BTZ black holes, which have positive energy. It is further shown that classical log gravity--the theory with logarithmically relaxed boundary conditions--has finite asymptotic symmetry generators but is not chiral and hence may be dual at the quantum level to a logarithmic conformal field theories (CFT). Moreover we show that log gravity contains chiral gravity within it as a decoupled charge superselection sector. We formally evaluate the Euclidean sum over geometries of chiral gravity and show that it gives precisely the holomorphic extremal CFT partition function. The modular invariance and integrality of the expansion coefficients of this partition function are consistent with the existence of an exact quantum theory of chiral gravity. We argue that the problem of quantizing chiral gravity is the holographic dual of the problem of constructing an extremal CFT, while quantizing log gravity is dual to the problem of constructing a logarithmic extremal CFT.

  16. Acoustic Waveform Logging - Advances In Theory And Application

    E-Print Network [OSTI]

    Cheng, C. H.

    Full-waveform acoustic logging has made significant advances in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of ...

  17. Effects of borehole stability on well log data

    E-Print Network [OSTI]

    Grandi Karam, Samantha, 1973-

    2003-01-01T23:59:59.000Z

    In this thesis we analyze the effects of borehole irregularities on well logs and develop methods to obtain reliable formation properties from such logs. Data from a well in eastern Venezuela are analysed. Borehole ...

  18. Well Log Data At Blue Mountain Geothermal Area (Fairbank & Niggemann...

    Open Energy Info (EERE)

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Data At Blue Mountain Geothermal Area (Fairbank & Niggemann, 2004) Exploration Activity Details...

  19. Pressure Temperature Log At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Exploration Activity...

  20. ADL Logging Architecture JIGI determines all server addresses from

    E-Print Network [OSTI]

    Janée, Greg

    ADL Logging Architecture JIGI logging server JIGI determines all server addresses from from the authentication server) JIGI user authentication server Note: JIGI authentication is logically; if the former, server adds sequence numbers to preserve record order (ODBC or other) middleware logging server

  1. NGO briefing paper on combating illegal logging and related trade

    E-Print Network [OSTI]

    NGO briefing paper on combating illegal logging and related trade Proposed Regulation concerning the placing of timber and timber products on the EU market Illegal logging poses a significant threat, and undermines sustainable forest management and development. Illegal logging has been documented

  2. Test results of a corrosion logging technique using electromagnetic thickness and pipe analysis logging tools

    SciTech Connect (OSTI)

    Iliyan, I.S.; Brown, G.A.; Cotton, W.J. Jr.

    1983-04-01T23:59:59.000Z

    Recent innovations in subsurface corrosion practices of the Arabian American Oil Co. (ARAMCO) have reduced logging and workover costs substantially and have permitted the detection of corrosion in the outer string of two concentric casing strings. At the request of ARAMCO, Schlumberger conducted test under both simulated and field conditions. Results showed that the data required to evaluate casing corrosion in a 7-in.X9 5/8-in. completion can be obtained during a single logging run using a 21.6-in. coil spacing electromagnetic thickness tool (ETT-A /SUP TM/ ) sonde (as opposed to two runs with 17.6-in. and 21.6-in. sondes previously used). In addition, corrosion of the outer string of 9 5/8-in. or 13 3/8-in. casing can be detected by using the results of the ETT-A logs and pipe-analysis tool (PAT) logs or caliper logs. To date, the application of this technique has been very successful in ARAMCO's operations.

  3. The Borneo Project : Indonesia Fails to Stop Illegal Logging, Report Says Indonesia Fails to Stop Illegal Logging, Report Says

    E-Print Network [OSTI]

    The Borneo Project : Indonesia Fails to Stop Illegal Logging, Report Says Indonesia Fails to Stop Illegal Logging, Report Says by Irwan Firdaus, The Associated Press January 15th, 2003 JAKARTA, Indonesia -- Corruption in Indonesia's police and military has contributed to a surge in illegal logging that has

  4. Log amplifier with pole-zero compensation

    DOE Patents [OSTI]

    Brookshier, W.

    1985-02-08T23:59:59.000Z

    A logarithmic amplifier circuit provides pole-zero compensation for improved stability and response time over 6-8 decades of input signal frequency. The amplifer circuit includes a first operational amplifier with a first feedback loop which includes a second, inverting operational amplifier in a second feedstock loop. The compensated output signal is provided by the second operational amplifier with the log elements, i.e., resistors, and the compensating capacitors in each of the feedback loops having equal values so that each break point is offset by a compensating break point or zero.

  5. Category:Caliper Log | 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:EzfeedflagBiomassSustainableCSLInformationMissouri:Catalyst2-Mpage?Brophypage containsLog

  6. Pressure Temperature Log | 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: navigation,Pillar Group BV Jump to: navigation,Power RentalAreas-|Log Jump to: navigation,

  7. Vertical Flowmeter Logging | 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 IRaghuraji Agro IndustriesTown of Ladoga,planningFlowmeter Logging Jump to: navigation, search OpenEI

  8. Dual excitation acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, III, William B. (Bothell, WA)

    1989-01-01T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in gelogical formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleous present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described.

  9. Dual excitation acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, W.B. III.

    1989-02-14T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be performed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described. 6 figs.

  10. Dewarless Logging Tool - 1st Generation

    SciTech Connect (OSTI)

    HENFLING,JOSEPH A.; NORMANN,RANDY A.

    2000-08-01T23:59:59.000Z

    This report focuses on Sandia National Laboratories' effort to create high-temperature logging tools for geothermal applications without the need for heat shielding. One of the mechanisms for failure in conventional downhole tools is temperature. They can only survive a limited number of hours in high temperature environments. For the first time since the evolution of integrated circuits, components are now commercially available that are qualified to 225 C with many continuing to work up to 300 C. These components are primarily based on Silicon-On-Insulator (SOI) technology. Sandia has developed and tested a simple data logger based on this technology that operates up to 300 C with a few limiting components operating to only 250 C without thermal protection. An actual well log to 240 C without shielding is discussed. The first prototype high-temperature tool measures pressure and temperature using a wire-line for power and communication. The tool is based around the HT83C51 microcontroller. A brief discussion of the background and status of the High Temperature Instrumentation program at Sandia, objectives, data logger development, and future project plans are given.

  11. Shippers in Indonesia fight decree on illegal logging Shippers in Indonesia fight decree on illegal logging

    E-Print Network [OSTI]

    Shippers in Indonesia fight decree on illegal logging Shippers in Indonesia fight decree on illegal on enforcing a new decree on the transportation of illegal timber. The Indonesian National Ship-owners Association says that the Indonesian government's proposal to impound ships carrying illegal timber would

  12. Annual Logging Symposium, June 22-26, 2013 MULTIDETECTOR LWD SIGMA LOGGING PRINCIPLES,

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    different detectors, environmental effects, and best practices. We analyze Monte Carlo simulations and test. A multidetector Logging-While-Drilling (LWD) Sigma design provides insight into the presence of invasion for a wide range of formations under typical LWD drilling conditions. Finally, a comparison is made of LWD

  13. IMPLICATIONS ON ECOSYSTEM SERVICES The impact of selective logging on Forest structure, Plant Diversity

    E-Print Network [OSTI]

    Paparella, Francesco

    IMPLICATIONS ON ECOSYSTEM SERVICES The impact of selective logging on Forest structure, Plant on the ecosystem, even though the available scientific literature is scanty and somewhat contradictory and other infestants. A simple mathematical model may explain these data. 1 IMPLICATIONS ON ECOSYSTEM

  14. Resistivity Log At Valles Caldera - Redondo Geothermal Area ...

    Open Energy Info (EERE)

    Et Al., 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Resistivity Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987)...

  15. Density Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    Rowley, Et Al., 1987) Exploration Activity Details Location Valles Caldera - Redondo Geothermal Area Exploration Technique Density Log Activity Date 1984 - 1984 Usefulness not...

  16. Neutron Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Neutron Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987) Exploration...

  17. Caliper Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    Rowley, Et Al., 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Caliper Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al.,...

  18. Pressure Temperature Log At Valles Caldera - Redondo Geothermal...

    Open Energy Info (EERE)

    Pressure Temperature Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987) Exploration Activity Details Location Valles Caldera - Redondo Geothermal Area...

  19. Portable GPS Baseband Logging Morgan Quigley, Stanford University

    E-Print Network [OSTI]

    Ng, Andrew Y.

    Portable GPS Baseband Logging Morgan Quigley, Stanford University Pieter Abbeel, Stanford Dennis Akos, University of Colorado Andrew Y. Ng, Stanford University BIOGRAPHY Morgan Quigley and Pieter

  20. Portable GPS Baseband Logging Morgan Quigley, Stanford University

    E-Print Network [OSTI]

    Stanford University

    Portable GPS Baseband Logging Morgan Quigley, Stanford University Pieter Abbeel, Stanford Dennis Akos, University of Colorado Andrew Y. Ng, Stanfod University BIOGRAPHY Morgan Quigley and Pieter

  1. Geophysical logs from water wells in the Yakima area, Washington

    SciTech Connect (OSTI)

    Biggane, J.H.

    1983-01-01T23:59:59.000Z

    The logs include: natural gamma, gamma gamma, neutron neutron, neutron gamma, caliper, fluid temperature, fluid resistivity, wall resistivity, spontaneous potential, and flow meter.

  2. Knowledge-based stratigraphic well-log correlation

    E-Print Network [OSTI]

    Denton, Michael A.

    1990-01-01T23:59:59.000Z

    represents the formations, and new rules for the knowledge-base that can correlate formations in reservoirs with secondary stratification. This expert system has correlated ovei' 3, 500 ft. of well-log data from three different types of rock sequences... inspirational support. TABLE OF CONTENTS Page ABSTRACT nl DEDICATION ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF TABLES x1 LIST OF FIGURES xl1 CHAPTER I ? INTRODUCTION 1. 1 Well-Logs 1. 2 Stratigraphic Well-Log Correlation . 1. 3 Well-Log Correlation...

  3. Well Log Data At Valles Caldera - Redondo Geothermal Area (Shevenell...

    Open Energy Info (EERE)

    to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Data At Valles Caldera - Redondo Geothermal Area (Shevenell, Et Al., 1988) Exploration...

  4. Compilation of network activity logs on a DECnet host

    SciTech Connect (OSTI)

    George, M.

    1987-07-01T23:59:59.000Z

    Log files are created for all incoming connection requests on a DECnet host. These log files contain connection data such as the requesting source, destination, and throughput. The procedures (referred to as collect software) outlined in this report, were written to collect these log files, to extract the essential information, and to condense the data into one-line records. The two VAX/VMS systems at SNLA that currently run these procedures compile network transaction logs on a weekly basis. This document is intended for VAX/VMS system managers who wish to install, and possibly modify, this software.

  5. Log-normal distribution for correlators in lattice QCD?

    E-Print Network [OSTI]

    Thomas DeGrand

    2012-04-20T23:59:59.000Z

    Many hadronic correlators used in spectroscopy calculations in lattice QCD simulations appear to show a log-normal distribution at intermediate time separations.

  6. Partnership Logging Accidents Cornelis de Hoop, LA Forest Products Lab

    E-Print Network [OSTI]

    Partnership Logging Accidents · by · Cornelis de Hoop, LA Forest Products Lab · Albert Lefort Agreement · 1998 & 1999 Accident Reports · 25 injuries reported · 185 loggers signed up · 8 deaths 1999

  7. Explicit Expressions for Moments of Log Normal Order Statistics

    E-Print Network [OSTI]

    Sidorov, Nikita

    Explicit Expressions for Moments of Log Normal Order Statistics Saralees Nadarajah First version: 31 December 2006 Research Report No. 23, 2006, Probability and Statistics Group School of Mathematics, The University of Manchester #12;Explicit Expressions for Moments of Log Normal Order Statistics by Saralees

  8. Illegal Logging and Illegal Activites in the Forestry Sector

    E-Print Network [OSTI]

    Illegal Logging and Illegal Activites in the Forestry Sector : Overview and Possible Issues, China #12;Quebec Wood Export Bureau Why Illegal logging and illegal activities ? ­ Threats for our export members companies ? · Unfair competition ? · New trade barriers ? Literature review ­ Data

  9. Survival Analysis of Click Logs Si-Chi Chin

    E-Print Network [OSTI]

    Street, Nick

    Survival Analysis of Click Logs Si-Chi Chin Information Science The University of Iowa Iowa City and Subject Descriptors: H.4 [Information Systems Applications]: Miscellaneous General Terms: Theory Keywords: Clickthrough Logs, Kaplan-Meier Survival Anal- ysis, Click Curve Visualization 1. INTRODUCTION AND DATASET

  10. Constraint Based Mining of First Order Sequences in SeqLog (Extended Abstract)

    E-Print Network [OSTI]

    Dzeroski, Saso

    ,deraedt}@informatik.uni­freiburg.de Abstract. A logical language, SeqLog, for mining and querying sequen­ tial data and databases is presented of user­ modeling that validate of the approach. 1 Introduction Data mining has been a hot research topic in recent years, and the mining of knowledge from data of various models has been studied. One popular data

  11. Geothermal well log interpretation state of the art. Final report

    SciTech Connect (OSTI)

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

    1980-01-01T23:59:59.000Z

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

  12. Selecting The Optimal Logging Suite For Geothermal Reservoir...

    Open Energy Info (EERE)

    Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  13. Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements

    E-Print Network [OSTI]

    Zhu, Zhenya

    2012-01-01T23:59:59.000Z

    In seismoelectric well logging, an acoustic wave propagates along a borehole and induces electrical signals along the borehole wall. The apparent velocities of these seismoelectric signals are equal to the formation ...

  14. JOBAID-LOGGING IN TO THE OLC LEARNING SYSTEM

    Broader source: Energy.gov [DOE]

    In this job aid you will Log In to the system, Retrieve Forgotten Password and/or User ID, and Use the LMS Help System built into the application.

  15. Secured Pace Web Server with Collaboration and Error Logging Capabilities

    E-Print Network [OSTI]

    Tao, Lixin

    : Secure Sockets Layer (SSL) using the Java Secure Socket Extension (JSSE) API, error logging............................................................................................ 8 Chapter 3 Secure Pace Web Server with SSL........................................................... 29 3.1 Introduction to SSL

  16. COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO...

    Open Energy Info (EERE)

    THE COSO GEOTHERMAL FIELD, CA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE...

  17. VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________

    E-Print Network [OSTI]

    Yang, Zong-Liang

    VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________ Door #____________ License Plate ____________________ Vehicle/Supplies (Enter Description such as grade sheets, artifacts, money, etc.) 6. Taking vehicle to Automotive Shop

  18. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

  19. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity.

  20. Calculation of sensitivity coefficients for a neutron well logging tool

    E-Print Network [OSTI]

    Chen, Chien-Hsiang

    1993-01-01T23:59:59.000Z

    OF SCIENCE August 1993 Major Subject: Nuclear Engineering CALCULATION OF SENSITIVITY COEFFICIENTS FOR A NEUTRON WELL LOGGING TOOL A Thesis by CHIEN-HSIANG CHEN Approved as to style and content by: Theodore A. Parish (Chair of Committee) Ron R. Hart... to calculate sensitivity coefficients. A benchmark problem for a neutron porosity logging tool was set up to test the methodology mentioned above. Through several tests and calculations of sensitivity coefficients, it was found that the response...

  1. assistant-based clinical log: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  2. Quantification of Wellbore Leakage Risk Using Non?destructive Borehole Logging Techniques

    SciTech Connect (OSTI)

    Duguid, Andrew; Butsch, Robert; Cary, J.; Celia, Michael; Chugunov, Nikita; Gasda, Sarah; Hovorka, Susan; Ramakrishnan, T. S.; Stamp, Vicki; Thingelstad, Rebecca; Wang, James

    2014-05-31T23:59:59.000Z

    Well integrity is important at all potential CCS locations and may play a crucial role establishing leakage risk in areas where there is a high density of existing wells that could be impacted by the storage operations including depleted petroleum fields where EOR or CCS will occur. To address a need for risk quantification methods that can be directly applied to individual wells using borehole logging tools a study was conducted using data from five wells in Wyoming. The objectives of the study were: Objective 1 Develop methods to establish the baseline flow parameters (porosity and permeability or mobility) from individual measurements of the material properties and defects in a well. Objective 2 Develop a correlation between field flow?property data and cement logs that can be used to establish the flow?properties of well materials and well features using cement mapping tools. Objective 3 Establish a method that uses the flow?property model (Objective 2) to analyze the statistical uncertainties associated with individual well leakage that can provide basis for uncertainty in risk calculations. The project objectives were met through the logging of five wells in Carbon and Natrona County Wyoming to collect data that was used to estimate individual and average well flow properties and model the results using ultrasonic data collected during the logging. Three of the five wells provided data on point and average flow properties for well annuli. Data from the other two wells were used to create models of cement permeability and test whether information collected in one well could be used to characterize another well. The results of the in?situ point measurements were confirmed by the lab measurements sidewall cores collected near the same depths Objective 1 was met using the data collected through logging, testing, and sampling. The methods were developed that can establish baseline flow parameters of wells by both point and average test methods. The methods to estimate the flow properties modeling of point pressure tests, modeling of vertical interference tests, and laboratory measurement of cased?hole sidewall cores The wells were in sufficiently good shape to allow the development of the characterization methods while still having enough defects to study differences in results as they relate to well integrity. Samples and tests analyzed from three of five wells studied in showed the cements were largely intact and had not degraded from exposure native brines. Log results taken in conjunction with the core measurements indicate that interfaces and/or problems with cement placement due to eccentering provide preferential flow paths for fluids, which can increase the effective permeability of the barrier several orders of magnitude above the permeability of intact cement. The results of the maps created using logging tools indicating that the cement condition and bond are generally good identify a need for more research to understand how logs can be used to predict effective well permeabilities such as those measured by the VITs in this study.

  3. Category:Neutron Log | 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, click here. Category:Conceptual ModelLists forMercury VaporTemplates

  4. A Uniqueness Result for Minimizers of the 1D Log-gas Renormalized Energy

    E-Print Network [OSTI]

    Thomas Leblé

    2014-08-10T23:59:59.000Z

    Sandier and Serfaty studied the one-dimensional Log-gas model, in particular they gave a crystallization result by showing that the one-dimensional lattice $\\mathbb{z}$ is a minimizer for the so-called renormalized energy which they obtained as a limit of the $N$-particle Log-gas Hamiltonian for $N \\to \\infty$. However, this minimizer is not unique among infinite point configurations (for example small perturbations of $\\mathbb{z}$ leave the renormalized energy unchanged). In this paper, we establish that uniqueness holds at the level of (stationary) point processes, the only minimizer being given by averaging $\\mathbb{z}$ over a choice of the origin in $[0,1]$. This is proved by showing a quantitative estimate on the two-point correlation function of a process in terms of its renormalized energy.

  5. Log-periodic behavior of a hierarchical failure model with ...

    E-Print Network [OSTI]

    earthquakes are accepted to be a type example of self— organization. ' We ?rst ..... the expected frictional heating on faults is not observed. [35]. The failure ...

  6. A model of forensic analysis using goal-oriented logging

    E-Print Network [OSTI]

    Peisert, Sean Philip

    2007-01-01T23:59:59.000Z

    World Conference on Information Security Education (WISE),actions on Information and System Security (TISSEC), 10(1),World Conference on Information Security Education (WISE),

  7. Logging Calibration Models for Fission Neutron Sondes (September 1981) |

    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 ofLetterEconomy andTerms Loan Terms

  8. User's manual for geophysical well-logging software programs

    SciTech Connect (OSTI)

    Petrie, G.M.; Gibson, D.; Blair, S.C.

    1983-02-01T23:59:59.000Z

    Since 1958 the Ground-Water Surveillance Program for the Hanford Site has made geophysical logging measurements in most of the 800 wells and deep boreholes that have been drilled on the Hanford Site. In 1980 the Pacific Northwest Laboratory (PNL), which conducts the Ground-Water Surveillance Program, began forming a computerized data base for storing and retrieving geophysical well log data and developing software for quantitative analysis of the well log data. This report, designed to serve as a user's guide, documents the data base system that handles the well log data. Two programs, DIGLOG1 and LOGIT, are used to manipulate the data. The program DIGLOG1 translates analog paper strip charts into digital format; the program LOGIT is a general utility program that edits, displays, checks, stores, writes, and deletes sets of well log data. These two programs do not provide sophisticated display and analytical capabilities; rather, they provide programs that give the user easy access to powerful standard analytical software.

  9. April 2002 Page 1 of 6 Export credits: Fuelling illegal logging

    E-Print Network [OSTI]

    April 2002 Page 1 of 6 Export credits: Fuelling illegal logging Export Credit Agencies (ECAs and indirectly to illegal logging. This briefing note details the relationship between ECAs and illegal logging and argues that, in order to address the problem of illegal logging, the EU cannot limit its activities

  10. Strategies to Combat Illegal Logging and Forest Crime Magnitude of the problem

    E-Print Network [OSTI]

    Strategies to Combat Illegal Logging and Forest Crime Magnitude of the problem Illegal logging estimated illegal logging as equal or exceeding the legal harvest rates in a number of countries including percent), Myanmar (80 percent), and Cambodia (94 percent). However, illegal logging is not limited

  11. System Problem Detection by Mining Console Logs Electrical Engineering and Computer Sciences

    E-Print Network [OSTI]

    Xu, Wei

    for mining console logs using a combination of program analysis, information retrieval, data mining logs. We then extract features, such as execution traces, from logs and use data mining and machineSystem Problem Detection by Mining Console Logs Wei Xu Electrical Engineering and Computer Sciences

  12. Cased-hole evaluation with the chlorine log

    SciTech Connect (OSTI)

    Deimel, J.; Andrus, D.

    1984-09-01T23:59:59.000Z

    Typical problems faced by operators in the Gulf of Mexico are the evaluation of low resistive potentially productive zones and depleted zones behind pipe. Tenneco Oil Company has used the chlorine logging system to solve these problems in numerous wells and several case studies are presented. The chlorine logging system is a neutroncapture spectral measurement and analysis technique which provides a quantitative, lithology-independent water saturation (Sw) interpretation. Water saturation is derived from the measured spectral response, formation porosity, formation water salinity, and wellbore geometry. No corrections for borehole fluid or shale volume are necessary. This logging system demonstrates its usefulness in evaluating low resistivity pay zones and evaluating water movement within producing and/or produced zones.

  13. Cement Bond Log | 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, click here.Telluric Survey asWest, New Jersey: EnergyGeothermal

  14. Correlation of log response to production in the Austin Chalk 

    E-Print Network [OSTI]

    Behseresht, Cyrus Douglas

    1992-01-01T23:59:59.000Z

    of this study is to determine to what degree the response of resistivity well-logs reflects the productivity of individual wells in the Austin Chalk. An area in south-central Burleson County was chosen for the study. Logs were available from 38 wells... for the Proco Gise data, Ro at 4% is 3. 59 ohm-m (figure 12). Thus, the Proco Gise ?1 data supports an Ro of approximately 3. 58 at 4% porosity in the Austin Chalk. This test of the empirical relationship between Rt and water saturation in the Chalk does...

  15. Subsistence Halibut Community Harvest Log Page 1 of 4

    E-Print Network [OSTI]

    -0512, Expiration date: 07/31/2014 Subsistence Halibut Community Harvest Permit (CHP) Log U.S. Dept of Commerce-1668 Telephone: 1-800-304-4846 FAX: 907-586-7354 BLOCK A ­ CHP COORDINATOR 1. Name of CHP Coordinator 2. Signature of CHP Coordinator BLOCK B -- SUBSISTENCE FISHER IDENTIFICATION 1. Name of Fisher (First, Middle

  16. TEAM CAPTAIN'S LOG Team Captain's Name: Team Name

    E-Print Network [OSTI]

    MKT-3131 D TEAM CAPTAIN'S LOG Team Captain's Name: Team Name: Team Captain's Phone Number: County. Enter information online at http://walkacrosstexas.tamu.edu. Record your team members= total weekly mileage (and pounds lost, if recorded) and enter online. In Week 7, remind your team members to complete

  17. Estimating the Service Time of Web Clients using Server Logs

    E-Print Network [OSTI]

    Freitag, Felix

    Estimating the Service Time of Web Clients using Server Logs Oscar Ardaiz Dep. Arquitectura de Freitag Dep. Arquitectura de Computadores Universidad Politécnica de Catalunya Jordi Girona, 1­3, Barcelona (España) felix@ac.upc.es Leandro Navarro Dep. Arquitectura de Computadores Universidad Politécnica

  18. DARK ENERGY FROM THE LOG-TRANSFORMED CONVERGENCE FIELD

    SciTech Connect (OSTI)

    Seo, Hee-Jong [Berkeley Center for Cosmological Physics, LBL and Department of Physics, University of California, Berkeley, CA 94720 (United States); Sato, Masanori [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Takada, Masahiro [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Chiba 277-8582 (Japan); Dodelson, Scott, E-mail: hee-jongseo@lbl.gov [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States)

    2012-03-20T23:59:59.000Z

    A logarithmic transform of the convergence field improves 'the information content', i.e., the overall precision associated with the measurement of the amplitude of the convergence power spectrum, by improving the covariance matrix properties. The translation of this improvement in the information content to that in cosmological parameters, such as those associated with dark energy, requires knowing the sensitivity of the log-transformed field to those cosmological parameters. In this paper, we use N-body simulations with ray tracing to generate convergence fields at multiple source redshifts as a function of cosmology. The gain in information associated with the log-transformed field does lead to tighter constraints on dark energy parameters, but only if shape noise is neglected. The presence of shape noise quickly diminishes the advantage of the log-mapping, more quickly than we would expect based on the information content. With or without shape noise, using a larger pixel size allows for a more efficient log-transformation.

  19. Condition and fate of logged forests in the Brazilian Amazon

    E-Print Network [OSTI]

    Camara, Gilberto

    Ecology, Carnegie Institution of Washington, Stanford, CA 94305; U.S. Department of Agriculture Forest resulted in high levels of canopy damage suffi- cient to leave forests susceptible to drought and fire. We the management regimes in effect at the time of our study in the Brazilian Amazon, selective logging would

  20. Lawson Job Description Acknowledgment Verification Instructions Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Acknowledgment Verification Instructions · Log In to Lawson o Lawson Web Lawson e-mail your password to you. Updated 3/15/10 Page 1 of 3 #12;Lawson Job Description Acknowledgment Verification Instructions Click "Employee's Sign-off of their Job Description" · Click "Employee's Sign

  1. Lawson Job Description Acknowledgment Instructions Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Acknowledgment Instructions · Log In to Lawson o Lawson Web Address: - https. Updated 3/15/10 Page 1 of 6 #12;Lawson Job Description Acknowledgment Instructions Click "My Job Description" · Click "My Job Description" from the Employee Central section of your home page o "My Job

  2. Peru: Illegal Mahogany Logging Continues in Reserve for Uncontacted Tribes Widespread illegal mahogany logging continues inside Peru's Muruanahua Territorial Reserve

    E-Print Network [OSTI]

    Peru: Illegal Mahogany Logging Continues in Reserve for Uncontacted Tribes Widespread illegal, indicating the settlement continues to be used as a transport center for mahogany illegally removed from and Park, loggers cut the trees into large boards with chainsaws. Because chainsawing mahogany is illegal

  3. Export premium: Why some logs are worth more abroad. Forest Service research paper

    SciTech Connect (OSTI)

    Flora, D.F.; McGinnis, W.J.; Lane, C.L.

    1993-07-01T23:59:59.000Z

    Throughout a century of log exports from the Pacific Northwest, export logs have been associated with higher prices than logs sold in the domestic market. Conventional wisdom currently maintains this perception that any export log is worth more than its domestic counterpart. The export-domestic difference, or export premium, seems to belie reason. Why would foreign buyers be willing to pay more than U.S. customers for the same log. In reality, do they. If they do, why do offshore purchasers not shift to inland logs, so that the premium would dwindle. Discussed here are circumstances that do and do not foster a continuing export premium.

  4. Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis

    E-Print Network [OSTI]

    Oakley, Jeremy

    Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis Tom Fricker University discrepancy in the Saturated Path Hydrology Model (logSPM, Kuczera et al., 2006). The purpose). 1 #12;3 The Saturated Path Hydrology Model We consider the Saturated Path Hydrology Model (log

  5. Mortality of regeneration during skyline logging of a shelterwood overstory

    SciTech Connect (OSTI)

    Tesch, S.D.; Lysne, D.H.; Mann, J.W.; Helgerson, O.T.

    1986-01-01T23:59:59.000Z

    The overstorey was felled in July and August 1980 on a 9-ha site on a 65% slope near Medford, Oregon, where a single regeneration cut was made in 1977 and the area was underplanted with Douglas fir and ponderosa pine in 1978. Before logging, seedlings (height 5-400 cm) were found on 35% of sample plots. Felling killed 22% of seedlings. Yarding using a running skyline yarder with a mechanical slack-pulling carriage killed 28% of seedlings that survived felling. Mortality was least in the 61-100 cm height class. It is concluded that a logging plan that minimizes corridor width and number of corridors converging at a single landing gives the best distribution of seedlings after the final cut. 2 references.

  6. Knowledge-based stratigraphic well-log correlation 

    E-Print Network [OSTI]

    Denton, Michael A.

    1990-01-01T23:59:59.000Z

    correlated higher ranking strata. Thus, higher ranking correlations provide heuristics for lower ranking correlations. The system represents strata by symbols from a set of standard symbols which include peaks, troughs, and steps. Symbols replace events.... The zone attributes abstracted from the well-log include the following: interval, lithology ? classified as shale or non-shale, zone position, general zone shape, thickness, average amplitude, zone above name, and zone below name. Thus, the expert system...

  7. Some new ideas for well log pore-pressure prediction

    SciTech Connect (OSTI)

    Hamouz, M.A.; Mueller, S.L.

    1984-09-01T23:59:59.000Z

    Predicting pore pressure from wireline logs is a common practice when designing wells. The accuracy of each prediction depends on the type of plot used and its associated assumptions. If these assumptions aren't adequately tested, then the results are often confusing and, possibly, dangerous. Accuracy is improved in all situations by plotting the correct wireline variables, checking the validity of the normal pressure trends with other pressure plots and regional data, and choosing the best techniques to estimate pressure.

  8. An expert system advisor for well log quality control

    E-Print Network [OSTI]

    Warnken, Dean Kennedy

    1988-01-01T23:59:59.000Z

    funda- mental tool in the evaluation of petroleum reservoirs. Wireline well logging involves undergrourR measurement of various rock and fluid properties. These meas~ts are usually recorded with a downhole sonde and ~tted to the surface through a... expert systems, has proven to be an effective com- puterized problem solving tool in many oilfield applications. Expert systems strive to mimic an ~'s reasoning process when performing a highly specialized task. Expert system problem solvirg combines...

  9. Stratigraphic correlation of well logs using relational tree

    SciTech Connect (OSTI)

    Fang, J.H.; Tsay, F.; Lai, P.F.

    1986-05-01T23:59:59.000Z

    A heuristic waveform correlation scheme of well logs is based on a relational tree matching. Waveforms (well logs) are represented in a data structure known as a relational tree. A relational tree provides a complete description of the contextural relationships, as defined by peaks and valleys of the waveforms. The correlational scheme consists of a distance-measuring process using all possible peak attributes. First, a distance function is defined for any two nodes in terms of peak attributes. To find the best match for a given node of a given waveform, the authors measure the distance between the given node and each node from a predefined subset of the second waveform. The closest one is considered to be the matched node. The process is repeated for every node in the waveform. This quantitative correlation method has been implemented and tested with well logs from the Black Warrior basin, north Alabama. Results showed that the procedure has the capability of handling the thickening and thinning strata, as well as missing intervals.

  10. GARCH models without positivity constraints: Exponential or Christian Francq

    E-Print Network [OSTI]

    GARCH models without positivity constraints: Exponential or Log GARCH? Christian Francq , Olivier of the log-GARCH and EGARCH models, which both rely on multiplicative volatility dynamics without positivity, tails) of the EGARCH model, which are already known, with those of an asymmetric version of the log-GARCH

  11. What is a blog? The word "blog," a contraction of "web log," is an informational web

    E-Print Network [OSTI]

    Zhou, Pei

    What is a blog? The word "blog," a contraction of "web log," is an informational web page's log, blogs on the web tend to maintain an ordered chronology, although they often unfold in reverse

  12. Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate pore-size

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1 ABSTRACT Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate, Nuclear Magnetic Resonance (NMR) logging has been used to assess a handful of key petrophysical parameters

  13. TITANium Quick Tips How to log into TITANium and enter a Community

    E-Print Network [OSTI]

    de Lijser, Peter

    TITANium Quick Tips How to log into TITANium and enter a Community: 1. Log into your portal with your user name and password. 2. Click on the TITANium tab. 3. Click on TITANium Communities 4 navigating TITANium Communities. #12;

  14. CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS

    E-Print Network [OSTI]

    CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS A study prepared@riia.org February 2002 #12;Controlling the international trade in illegally logged timber and wood products Page 2...................................................................................................................... 11 ILLEGAL ACTIVITIES IN THE FOREST SECTOR

  15. ForPeerReview Interpretation of hydraulic rock types with resistivity logs in

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Subject Areas: Borehole and log interpretation, Integrated workflows and best practices (with broad hydraulic rock types. Core data and well logs acquired from a deep-drilling exploration well penetrating

  16. Boise State University Automobile Use Mileage Log (Documentation for Business Miles)

    E-Print Network [OSTI]

    Barrash, Warren

    Boise State University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03 University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03/10 PAGE ____ (IF YOU NEED

  17. Object-Based Image Analysis of Downed Logs in Disturbed Forested Landscapes Using Lidar

    E-Print Network [OSTI]

    Kelly, Maggi

    2011-01-01T23:59:59.000Z

    quantity and location of downed logs in forests is important for assessing fire risk [4,5], measuring dead biomass

  18. Scalable Replay with Partial-Order Dependencies for Message-Logging Fault Tolerance

    SciTech Connect (OSTI)

    Lifflander, Jonathan; Meneses, Esteban; Menon, Harshita; Miller, Phil; Krishnamoorthy, Sriram; Kale, Laxmikant

    2014-09-22T23:59:59.000Z

    Deterministic replay of a parallel application is commonly used for discovering bugs or to recover from a hard fault with message-logging fault tolerance. For message passing programs, a major source of overhead during forward execution is recording the order in which messages are sent and received. During replay, this ordering must be used to deterministically reproduce the execution. Previous work in replay algorithms often makes minimal assumptions about the programming model and application in order to maintain generality. However, in many cases, only a partial order must be recorded due to determinism intrinsic in the code, ordering constraints imposed by the execution model, and events that are commutative (their relative execution order during replay does not need to be reproduced exactly). In this paper, we present a novel algebraic framework for reasoning about the minimum dependencies required to represent the partial order for different concurrent orderings and interleavings. By exploiting this theory, we improve on an existing scalable message-logging fault tolerance scheme. The improved scheme scales to 131,072 cores on an IBM BlueGene/P with up to 2x lower overhead than one that records a total order.

  19. Illegal logging and destruction continues in the Greenpeace demands all companies stop buying wood

    E-Print Network [OSTI]

    Illegal logging and destruction continues in the Amazon Greenpeace demands all companies stop. Pombo, one of the largest log traders in the Porto de Moz area, supplies companies such as Eidai do of Brazil's Para State. Activists painted "Crime" on 6,000 cubic metres of logs and on a barge used

  20. Annual Logging Symposium, June 19-23, 2010 QUANTITATIVE INTERPRETATION OF PULSED NEUTRON

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    measurements. The extension of time-lapse logging in waterflooded reservoirs is the estimation of waterflood for shoulder-bed effects on PNC logs acquired in sand- shale laminated reservoirs. Due to diffusion effects-hole saturation monitoring. PNC logs can be used to discriminate hydrocarbon- from water-bearing reservoir units

  1. Illegal logging, landscape structure and the variation of tree species richness across North Andean forest remnants

    E-Print Network [OSTI]

    Rodríguez, Miguel Ángel

    Illegal logging, landscape structure and the variation of tree species richness across North Andean countries, namely illegal logging for household consumption (ILHC), as well as that of characteristics richness; Cloud forest 1. Introduction Forest clearing by legal or illegal logging is a major ecological

  2. Home Contact Us Help Site Map Index Search Combating Illegal Logging in Africa

    E-Print Network [OSTI]

    Home · Contact Us · Help · Site Map · Index · Search Combating Illegal Logging in Africa. Deforestation is almost exclusively concentrated in tropical regions. Illegal logging on public lands worldwide to a Ministerial Declaration and Actions targeted at combating illegal logging, associated illegal trade

  3. Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood Markets

    E-Print Network [OSTI]

    Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood@aol.com; hekstrom@wri-ltd.com October, 2004 #12;Page ES - 1 Illegal Logging and Global Wood Markets: The Competitive, LLC Executive Summary Illegal logging has been high on the agenda, if not directly at the center

  4. Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood Markets

    E-Print Network [OSTI]

    Seneca Creek Associates, LLC Wood Resources International, LLC SUMMARY "Illegal" Logging and Global Resources International, LLC Illegal Logging and Global Wood Markets: The Competitive Impacts on the U.S. Wood Products Industry1 Summary Study Objectives Illegal logging and illegal forest activities, in one

  5. THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL

    E-Print Network [OSTI]

    THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA by Charles E. Palmer CSERGE Working Paper http://www.cserge.ucl.ac.uk/Illegal_Logging.pdf #12;2 THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA

  6. Illegal Logging and Illegal Activities in the Forestry Sector: Overview and Possible Issues

    E-Print Network [OSTI]

    Illegal Logging and Illegal Activities in the Forestry Sector: Overview and Possible Issues Product Markets and Marketing identified the issue of illegal logging and illegal activities these countries' boundaries and provides examples in developed nations. The pernicious effects of illegal logging

  7. CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS

    E-Print Network [OSTI]

    CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS A study prepared@riia.org February 2002 http://www.illegal-logging.info/uploads/1_ControllingTrade.pdf #12;Controlling the international trade in illegally logged timber and wood products Page 2 Contents EXECUTIVE SUMMARY

  8. African Countries Take Lead On Illegal Logging UN Integrated Regional Information Networks

    E-Print Network [OSTI]

    African Countries Take Lead On Illegal Logging UN Integrated Regional Information Networks Email Abidjan Of the 39 countries which recently signed a declaration outlawing illegal logging 31 came from Africa, an indication of how seriously the problem of illegal logging is viewed around the continent

  9. A UNIX security log analyzer based on from/to access matrix

    E-Print Network [OSTI]

    El-Haj Mahmoud, Samer Ahmad

    2002-01-01T23:59:59.000Z

    or eliminating patterns of normal behavior. This research aims to study UNIX system log files and log analyzers, and to present a new method for log analysis. The method is based on a systems access matrix that provides a set of rules for services in the network...

  10. Borehole Calibration Facilities to Support Gamma Logging for Hanford Subsurface Investigation and Contaminant Monitoring - 13516

    SciTech Connect (OSTI)

    McCain, R.G.; Henwood, P.D.; Pope, A.D.; Pearson, A.W. [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)] [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)

    2013-07-01T23:59:59.000Z

    Repeated gamma logging in cased holes represents a cost-effective means to monitor gamma-emitting contamination in the deep vadose zone over time. Careful calibration and standardization of gamma log results are required to track changes and to compare results over time from different detectors and logging systems. This paper provides a summary description of Hanford facilities currently available for calibration of logging equipment. Ideally, all logging organizations conducting borehole gamma measurements at the Hanford Site will take advantage of these facilities to produce standardized and comparable results. (authors)

  11. Gamma Log At Coso Geothermal Area (1977) | 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 directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At

  12. Tsallis Distribution Decorated With Log-Periodic Oscillation

    E-Print Network [OSTI]

    Wilk, Grzegorz

    2015-01-01T23:59:59.000Z

    In many situations, in all branches of physics, one encounters power-like behavior of some variables which are best described by a Tsallis distribution characterized by a nonextensivity parameter $q$ and scale parameter $T$. However, there exist experimental results which can be described only by a Tsallis distributions which are additionally decorated by some log-periodic oscillating factor. We argue that such a factor can originate from allowing for a complex nonextensivity parameter $q$. The possible information conveyed by such an approach (like the occurrence of complex heat capacity, the notion of complex probability or complex multiplicative noise) will also be discussed.

  13. Appendix A Lithologic and Monitor Well Completion Logs

    Office of Legacy Management (LM)

    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 742EnergyOn AprilA group currentBradleyTableSelling7111A Lithologic and Monitor Well Completion Logs

  14. Acoustic Logs At Coso Geothermal Area (1977) | 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 withTianlinPapersWindey Wind6:00-06:00AboutAchille,Acme, Washington:AlumLogs At

  15. Acoustic Logs At Coso Geothermal Area (2005) | 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 withTianlinPapersWindey Wind6:00-06:00AboutAchille,Acme, Washington:AlumLogs

  16. Energy Efficiency in Log Homes | 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 off Energy.gov. Are you sure you want toworldPowerHome | DocumentsElements ofin Log Homes Energy

  17. Property:FirstWellLog | 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 Jump to: navigation, search Property NameFirstWellDepth Jump to:FirstWellLog Jump

  18. Resistivity Log At Long Valley Caldera Geothermal Area (Nordquist, 1987) |

    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 Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish

  19. Resistivity Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et

    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 Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At

  20. Going off grid: Computationally efficient inference for log-Gaussian Cox processes

    E-Print Network [OSTI]

    Simpson, Daniel; Lindgren, Finn; Sørbye, Sigrunn; Rue, Håvard

    2011-01-01T23:59:59.000Z

    In this paper we introduce a new method for performing computational inference on log-Gaussian Cox processes (LGCP). Contrary to current practice, we do not approximate by a counting process on a partition of the domain, but rather attack the point process likelihood directly. In order to do this, we use the continuously specified Markovian random fields introduced by \\citet{Lindgren2011}. The inference is performed using the \\texttt{R-INLA} package of \\citet{art451}, which allows us to perform fast approximate inference on quite complicated models. The new method is tested on a real point pattern data set as well as two interesting extensions to the classical LGCP framework. The first extension considers the very real problem of variable sampling effort throughout the observation window and implements the method of \\citet{Chakraborty2011}. The second extension moves beyond what is possible with current techniques and constructs a log-Gaussian Cox process on the world's oceans. Code for the examples can be fo...

  1. Log of Changes to IMA Mineral List This log file was begun in June 2010 to keep track of changes to the IMA list of minerals

    E-Print Network [OSTI]

    Downs, Robert T.

    1 Log of Changes to IMA Mineral List This log file was begun in June 2010 to keep track of changes to the IMA list of minerals at http://rruff.info/IMA. 2 August 2013: Eltyubyuite: New mineral descriptions of wadalite: a new mineral from the Northern Caucasus, Kabardino-Balkaria, Russia. European Journal

  2. Logging InLogging In Go to Johnson School LibraryGo to Johnson School Library''s Website,s Website,

    E-Print Network [OSTI]

    Lipson, Michal

    #12;Logging InLogging In Go to Johnson School LibraryGo to Johnson School Library''s Website such as Company Name, ConHere you can enter more specifications such as Company Name, Contacttact Name etc;ExampleExample Link to company provides more detailed information of the companLink to company provides

  3. Nuclear Tools For Oilfield Logging-While-Drilling Applications

    SciTech Connect (OSTI)

    Reijonen, Jani [Schlumberger PTC, 20 Wallace Rd., Princeton Junction, NJ 08550 (United States)

    2011-06-01T23:59:59.000Z

    Schlumberger is an international oilfield service company with nearly 80,000 employees of 140 nationalities, operating globally in 80 countries. As a market leader in oilfield services, Schlumberger has developed a suite of technologies to assess the downhole environment, including, among others, electromagnetic, seismic, chemical, and nuclear measurements. In the past 10 years there has been a radical shift in the oilfield service industry from traditional wireline measurements to logging-while-drilling (LWD) analysis. For LWD measurements, the analysis is performed and the instruments are operated while the borehole is being drilled. The high temperature, high shock, and extreme vibration environment of LWD imposes stringent requirements for the devices used in these applications. This has a significant impact on the design of the components and subcomponents of a downhole tool. Another significant change in the past few years for nuclear-based oilwell logging tools is the desire to replace the sealed radioisotope sources with active, electronic ones. These active radiation sources provide great benefits compared to the isotopic sources, ranging from handling and safety to nonproliferation and well contamination issues. The challenge is to develop electronic generators that have a high degree of reliability for the entire lifetime of a downhole tool. LWD tool testing and operations are highlighted with particular emphasis on electronic radiation sources and nuclear detectors for the downhole environment.

  4. Illegal Logging The US Forest Service, through its International Programs office, actively works around the globe to

    E-Print Network [OSTI]

    Illegal Logging The US Forest Service, through its International Programs office, actively works around the globe to reduce illegal logging. Illegal logging is a complex problem with myriad implications in various discrete aspects of the fight against illegal logging (for example, The US Department

  5. Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly

    E-Print Network [OSTI]

    Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly Cameroon axes illegal logging 14/05/2010 Cameroon axes illegal logging Illegal and trade of illegal logging. The latest country to sign up to the programme is Cameroon, which completed

  6. Coal log pipeline research at University of Missouri. 1. quarterly report for 1996, January 1--March 31, 1996

    SciTech Connect (OSTI)

    NONE

    1996-07-01T23:59:59.000Z

    This project consists of the following nine tasks: Machine design for coal log fabrication; Very rapid compaction of coal logs; Rapid compaction of coal logs; Fast-track experiments on coal log compaction; Coal log fabrication using hydrophobic binders; Drag reduction in large diameter hydraulic capsule pipeline; Automatic control of coal log pipeline system; Hydraulics of CLP (Coal Log Pipeline); and Coal heating system research. The purpose of the task, the work accomplished during this report period, and work proposed for the next quarter are described for each task.

  7. Temperatures and Natural Gamma-Ray Logs Obtained in 1986 from...

    Open Energy Info (EERE)

    Changes in temperature logs run in July and September appear to result from fluid loss to the formation during and following drilling and possibly to ground shaking...

  8. Closure of logging wounds after 10 years. Forest Service research paper (Final)

    SciTech Connect (OSTI)

    Smith, H.C.; Miller, G.W.; Schuler, T.M.

    1994-09-01T23:59:59.000Z

    Closure of logging wounds on 96 sample trees was evaluated after 2, 5, and 10 years for Appalachian hardwood trees in north-central West Virginia. For yellow-poplar, northern red oak, black cherry, and white oak, many small wounds, 1 to 50 square inches in size, closed between 5 and 10 years after logging. For larger wounds, 50 to 200 square inches, it appears that many of these wounds may not close for at least 15 or perhaps 20 years after logging. Recommendations are provided to minimize logging wounds on residual trees in partially cut stands.

  9. Measuring the Effect of Selective Logging on Tropical Forest-Atmosphere Exchange

    E-Print Network [OSTI]

    Goulden, Michael L.

    and low impact extraction methods 1. Conventional Selective Logging: ·Large percent of canopy/soil can takes advantage of newly available PAR. · Reduced Impact Logging and/or Light Harvest resulted in little disturbance. · These are dry season data - chambers indicate decomposition is water limited. POSSIBLE

  10. PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND Hasselt University

    E-Print Network [OSTI]

    Lin, Xiaodong

    1 PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND CHALLENGES Mieke Jans Hasselt 15, 20101 1 Comments are welcome and may be addressed to mieke.jans@uhasselt.be. #12;2 PROCESS MINING that process mining of event logs can provide to internal and external auditors. Process mining aims to extract

  11. Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection/Transmission Matrices Method

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection, the Thomson-Haskell method is the only analytical method available to simulate multipole acoustic logging is slower than the compressional velocity of the drilling fluid in the borehole. Because a multipole tool

  12. 120 Forest Products Company Gather to Combat Illegal Logging March 20, 2005

    E-Print Network [OSTI]

    120 Forest Products Company Gather to Combat Illegal Logging March 20, 2005 Geneva - More than 120 wood flooring companies in China. "We all must work together to eliminate illegal logging. Government forest products company representatives, government officials and conservationists gathered this week

  13. Annual Logging Symposium, June 3-6, 2007 QUANTITATIVE STUDIES OF RELATIVE DIP ANGLE AND BED -

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPWLA 48th Annual Logging Symposium, June 3-6, 2007 1 QUANTITATIVE STUDIES OF RELATIVE DIP ANGLE; Chevron Energy Technology Company Copyright 2007, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors. This paper was prepared for presentation at the SPWLA

  14. Illegal logging on Penan traditional landin Sarawak, Malaysia (Photo by Angelo Musco)

    E-Print Network [OSTI]

    Illegal logging on Penan traditional landin Sarawak, Malaysia (Photo by Angelo Musco) New Global Alliance Formed to Undercut Illegal Logging Print this page WASHINGTON, DC, May 26, 2010 (ENS) - To reduce of the World Resources Institute, one of the founding members of the Alliance. "Some companies are not aware

  15. ORIGINALS ORIGINALARBEITEN The effect of log heating temperature on the peeling process

    E-Print Network [OSTI]

    Boyer, Edmond

    with deeper and more spaced checks than high temperatures when checks are closer and less deep, becoming even by soaking--immersing the whole logs in hot water basins--or by steaming them in vats. These traditionalORIGINALS ORIGINALARBEITEN The effect of log heating temperature on the peeling process and veneer

  16. LOG-SPECTRAL AMPLITUDE ESTIMATION WITH GENERALIZED GAMMA DISTRIBUTIONS FOR SPEECH ENHANCEMENT

    E-Print Network [OSTI]

    Alwan, Abeer

    LOG-SPECTRAL AMPLITUDE ESTIMATION WITH GENERALIZED GAMMA DISTRIBUTIONS FOR SPEECH ENHANCEMENT Bengt enhancement. Generalized Gamma distributed (GGD) priors are assumed for speech short-time spectral amplitudes by Ephraim and Malah [2]. Index Terms-- Speech Enhancement, Log-spectral Amplitude Estimator, Generalized

  17. P2P Logging and Timestamping for Reconciliation Mounir Tlili, W. Kokou Dedzoe,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    P2P Logging and Timestamping for Reconciliation Mounir Tlili, W. Kokou Dedzoe, Esther Pacitti-INRIA {FirstName.LastName}@loria.fr ABSTRACT In this paper, we address data reconciliation in peer-to-peer (P2P) collaborative applications. We propose P2P-LTR (Logging and Timestamping for Reconciliation) which provides P2P

  18. Setting Your Moodle Profile 1) Log into Moodle at http://moodle.njit.edu.

    E-Print Network [OSTI]

    Bieber, Michael

    Setting Your Moodle Profile 1) Log into Moodle at http://moodle.njit.edu. 2) After logging in users: Expanding a folder 4) After entering the course, click on the "Profile" link under the "Administration" block. See Figure 3. Figure 3: "Profile" link #12;5) Click on the "Edit profile" tab. It is the second

  19. SPE 159255-PP Rock Classification from Conventional Well Logs in Hydrocarbon-Bearing

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    typing method for application in hydrocarbon-bearing shale (specifically source rock) reservoirs using conventional well logs and core data. Source rock reservoirs are known to be highly heterogeneous and often, petrophysical description of source rock reservoirs with well logs has been focused to quantifying rock

  20. Integration of Geology, Rock-Physics, Logs, and Pre-stack Seismic for Reservoir Porosity Estimation

    E-Print Network [OSTI]

    Al Muhaidib, Abdulaziz

    2011-01-01T23:59:59.000Z

    The main objective of this paper is to obtain reservoir properties, such as porosity, both at the well locations and in the inter-well regions from seismic data and well logs. The seismic and well-log datasets are from an ...

  1. Efficient SIMD technique with parallel Max-Log-MAP Algorithm for Turbo Decoders

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Efficient SIMD technique with parallel Max-Log-MAP Algorithm for Turbo Decoders David Gnaedig Turbo on a DSP a parallel Max-Log-MAP algorithm for turbo decoders. It consists in using SIMD instructions by the use of an adapted two-dimensional turbo code and its parallel interleaver structure. After a brief

  2. Report reveals dramatic decline in illegal logging in tropical forest nations

    E-Print Network [OSTI]

    Report reveals dramatic decline in illegal logging in tropical forest nations July 15th, 2010 in Space & Earth / Environment The most thorough assessment to date of the global fight against illegal climate. According to the report, "Illegal Logging and Related Trade: Indicators of the Global Response

  3. A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams

    E-Print Network [OSTI]

    Xu, Wei

    A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams Wei Xu. Human operators monitoring the sys- tem use the log data and their experience to detect failures information than the operators can discern. The data might be used to predict that a particular machine

  4. Mining Logs Files for Data-Driven System Management School of Computer Science

    E-Print Network [OSTI]

    Li, Tao

    Mining Logs Files for Data-Driven System Management Wei Peng School of Computer Science Florida of the log files have been less emphasized in existing methods from data mining and machine learning in data representation pose new challenges. In this paper, we will describe our research efforts on mining

  5. Invited Applications Paper Detecting Large-Scale System Problems by Mining Console Logs

    E-Print Network [OSTI]

    Xu, Wei

    . Researchers and operators have been using all kinds of mon- itoring data, from the simplest numerical metrics Problems by Mining Console Logs part operator, and charged with fixing the problem-- are usuallyInvited Applications Paper Detecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw

  6. Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels

    E-Print Network [OSTI]

    Kavcic, Aleksandar

    Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels Fabian-log-map (MLM) detector has well-known appli- cations to the intersymbol interefence (ISI) channel [1, · · · , is trans- mitted across the ISI channel. Let the following random This work was performed when F. Lim

  7. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore, K.

    2001-07-13T23:59:59.000Z

    The objective of this project is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. This is the first annual progress report submitted to the DOE. It reports on the work completed during the reporting period even if it may have started before this period. This project is a partnership between Professor George J. Hirasaki at Rice University and Professor Kishore Mohanty at University of Houston. In addition to the DOE, this project is supported by a consortium of oil companies and service companies. The fluid properties characterization has emphasized the departure of live oils from correlations based on dead oils. Also, asphaltic components can result in a difference between the T1 and T2 relaxation time distributions as well as reduce the hydrogen index. The fluid rock characterizations that are reported here are the effects of wettability and internal magnetic field gradients. A pore reconstruction method ha s been developed to recreate three-dimensional porous media from two-dimensional images that reproduce some of their key statistical properties. A Monte Carlo simulation technique has been developed to calculate the magnetization decay in fluid saturated porous media given their pore structure.

  8. Potential impacts of tighter Forest Service log export restrictions

    SciTech Connect (OSTI)

    Not Available

    1985-01-28T23:59:59.000Z

    Federal law restricts the export of unprocessed timber cut from national forests in the western half of the United States. Also, purchasers of national forest timber are restricted from substituting timber harvested from federal lands for privately owned timber that they export. GAO reviewed the magnitude of and the potential impacts from extending the substitution restriction to cover third parties who subsequently acquire Forest Service timber from the original purchasers - an export industry practice commonly referred to as third-party substitution. According to the Forest Service and timber industry associations, third-party substitution approximates 100 million board feet annually in the western United States. They said that if the practice were banned, some companies could acquire national forest timber at lower prices because of decreased demand and competition, and the lower prices would result in less government revenues. Also, a ban could disrupt traditional log markets and business practices. The Forest Service believes it could not enforce a ban on third-party substitution without additional legal authority and staff.

  9. Logging anomalies key to 100-bcf, shallow gas play

    SciTech Connect (OSTI)

    Cook, P.L. Jr. (Cook Energy, Inc. (US)); Scheneeflock, R.D.; Bush, J.D.; Marble, J.C. (Paramount Petroleum Co., Inc., Jackson, MI (US))

    1991-09-01T23:59:59.000Z

    The upper cretaceous Eutaw formation of Mississippi has produced almost 2 Tcf of gas since its initial discovery at Gwinville field in 1944. Prior to the discovery of Trimble field in 1988, the last major Eutaw gas discovery in Mississippi was at Maxie-Pistol Ridge field in 1951. Consequently, the Trimble discovery is the most important shallow gas find in the Interior Salt Basin in nearly 40 years. Trimble field now contains 21 wells, with gas reserves in excess of 100 bcfg and maximum daily production averaging 42 MMcfd. As of January 1991, Trimble field has produced 12.2 Bcfg and 67,688 bbl condensate from 21 wells. Annual gas production for 1991 is expected to be 12 Bcfg. This article focuses on the log evaluation techniques developed to aid in the recognition of the low-resistivity Eutaw pay. Trimble field is an excellent example of how an anomalous set of occurrences in a trend can lead to new exploration opportunities. For a more detailed look at this case study, readers are referred to the 1990 Transaction of the Gulf Coast Association of Geological Societies annual meeting.

  10. VLT/UVES observations of extremely strong intervening damped Lyman-alpha systems: Molecular hydrogen and excited carbon, oxygen and silicon at log N(HI)=22.4

    E-Print Network [OSTI]

    Noterdaeme, P; Rahmani, H; Petitjean, P; Pâris, I; Ledoux, C; Gupta, N; López, S

    2015-01-01T23:59:59.000Z

    We present a detailed analysis of three extremely strong intervening DLAs (log N(HI)>=21.7) observed towards quasars with VLT/UVES. We measure overall metallicities of [Zn/H]~-1.2, -1.3 and -0.7 at respectively zabs=2.34 towards SDSS J2140-0321 (log N(HI) = 22.4+/-0.1), zabs=3.35 towards SDSS J1456+1609 (log N(HI) = 21.7+/-0.1) and zabs=2.25 towards SDSS J0154+1935 (log N(HI) = 21.75+/-0.15). We detect H2 towards J2140-0321 (log N(H2) = 20.13+/-0.07) and J1456+1609 (log N(H2) = 17.10+/-0.09) and argue for a tentative detection towards J0154+1935. Absorption from the excited fine-structure levels of OI, CI and SiII are detected in the system towards J2140-0321, that has the largest HI column density detected so far in an intervening DLA. This is the first detection of OI fine-structure lines in a QSO-DLA, that also provides us a rare possibility to study the chemical abundances of less abundant atoms like Co and Ge. Simple single phase photo-ionisation models fail to reproduce all the observed quantities. Inst...

  11. Impact of in-woods product merchandizing on profitable logging opportunities in southern upland hardwood forests. Forest Service research paper

    SciTech Connect (OSTI)

    May, D.M.; LeDoux, C.B.; Tansey, J.B.; Widmann, R.

    1994-04-01T23:59:59.000Z

    The report estimates profitable logging opportunities existing in upland hardwood forests in 14 Southern States and demonstrates the impact of three alternative product-merchandizing options on profitable logging opportunities and profit margins.

  12. Forest cover change and illegal logging in the Ukrainian Carpathians in the transition period from 1988 to 2007

    E-Print Network [OSTI]

    Vermont, University of

    Forest cover change and illegal logging in the Ukrainian Carpathians in the transition period from 2009 Keywords: Forest harvesting Illegal logging Forest disturbance Landsat Support vector machines Ukraine Carpathians Forest inventory data Forest resource assessment Post-socialist transition Illegal

  13. 9/17/12 Lessons from the US: stopping illegal logging benefits both sides of politics 1/3theconversation.edu.au/lessons-from-the-us-stopping-illegal-logging-benefits-both-sides-of-politics-9529

    E-Print Network [OSTI]

    9/17/12 Lessons from the US: stopping illegal logging benefits both sides of politics 1/3theconversation.edu.au/lessons-from-the-us-stopping-illegal-logging-benefits-both-sides-of-politics-9529 In the US Congress, it was hard to find an opponent to stopping illegal logging. CIFOR Search search our articles

  14. Application of bi-linear loglog SN model to strain-controlled fatigue data of aluminum alloys and its effect on life predictions

    E-Print Network [OSTI]

    Fatemi, Ali

    Application of bi-linear log­log S­N model to strain-controlled fatigue data of aluminum alloys­log model is applied to stress amplitude versus fatigue life data of 14 aluminum alloys. It is shown-life curves are discussed. Life predictions of aluminum alloys based on linear and bi-linear models are also

  15. Economic impact of log grade on the production of plywood and lumber

    E-Print Network [OSTI]

    Ledford, Donald Wayne

    1986-01-01T23:59:59.000Z

    and lumber. Product recovery studies were conducted for a band headsaw, a chip-n-saw, a chip-n-saw stud mill, a plywood mill peeling I/8" veneer, and a plywood mill peeling I/6" veneer. The relationship of volume and grade of product recovery... samples at the stud mill, expressed in percent of total lumber production from the log sample 66 18. Log samples peeled to 1/8" veneer with recoveries of dry veneer 69 Plywood production (1/8" veneer) per ton of log input 71 19b Plywood production...

  16. Logging into Deltek Time & Expense (T&E) | The Ames Laboratory

    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 Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to FranklinLogging

  17. Identifying Complex Fluvial Sandstone Reservoirs Using Core, Well Log, and 3D Seismic Data: Cretaceous Cedar Mountain and Dakota Formations,

    E-Print Network [OSTI]

    Seamons, Kent E.

    core, well-log, and 3D seismic data. The detailed stratigraphy and sedimentology of the interval were

  18. Numerical simulation of borehole acoustic logging in the frequency and time domains with hp-adaptive finite elements

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    and for the improvement of acoustic logging techniques used by oil- and oil-service companies to detect and quantifyNumerical simulation of borehole acoustic logging in the frequency and time domains with hp Available online 8 January 2009 Keywords: Acoustic logging Borehole acoustics Wave propagation Linear

  19. May 20, 2002: Illegal Logging Threatens Ecological and Economic Stability Update 11: May 21, 2002-7

    E-Print Network [OSTI]

    companies with flood-related claims. Rampant deforestation, much of it from illegal logging, has destroyedMay 20, 2002: Illegal Logging Threatens Ecological and Economic Stability Update 11: May 21, 2002-7 Copyright © 2002 Earth Policy Institute Illegal Logging Threatens Ecological and Economic Stability Janet

  20. Figure 1. Block diagram of the turbo decoder. A Memory-Reduced Log-MAP Kernel for Turbo Decoder

    E-Print Network [OSTI]

    Hung, Shih-Hao

    Figure 1. Block diagram of the turbo decoder. A Memory-Reduced Log-MAP Kernel for Turbo Decoder--Generally, the Log-MAP kernel of the turbo decoding consume large memories in hardware implement- tation of the turbo decoder is implemented to verify the proposed memory-reduced Log- MAP kernel in 3.04Ã?3.04mm2 core

  1. Action on illegal logging: measuring UNECE/FAO and WTO workshop: Emerging trade measures in timber markets

    E-Print Network [OSTI]

    1 Action on illegal logging: measuring impacts UNECE/FAO and WTO workshop: Emerging trade measures of illegal logging · Chatham House indicators project to assess: ­ Levels of attention ­ Government policy of illegal logging and trade ­ Backed up by survey of experts · Phase 1 study out by June 2010: ­ Producers

  2. Reservoir parameters estimation from well log and core data: a case study from the North Sea

    E-Print Network [OSTI]

    Edinburgh, University of

    is based on matching core and log data, and the linear and non-linear regressions are then used to build. Second, linear and non- linear regression are employed to derive porosity, shale vol- umes, clay contents

  3. Integrating User Feedback Log into Relevance Feedback by Coupled SVM for Content-Based Image Retrieval

    E-Print Network [OSTI]

    Lyu, Michael R.

    , the user feedback log is one of the most important resources to bridge the seman- tic gap problem in image to re- peat many rounds of feedback in order to achieve satisfac- tory results. Hence, the learning task

  4. Sonic Logging in Deviated Boreholes in an Anisotropic Formation: Laboratory Study

    E-Print Network [OSTI]

    Zhu, Zhenya

    2006-01-01T23:59:59.000Z

    Deepwater field development requires drilling of deviated or horizontal wells. Most formations encountered can be highly anisotropic and P- and S-wave velocities vary with propagation directions. Sonic logs acquired in ...

  5. Annual Logging Symposium, June 21-24, 2009 HISTORY MATCHING OF MULTIPHASE-FLOW FORMATION-

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPWLA 50th Annual Logging Symposium, June 21-24, 2009 1 HISTORY MATCHING OF MULTIPHASE-phase analytical techniques. We describe the successful application of a three- dimensional (3D) multiphase

  6. Lithology and well log study of Campbell E-2 geothermal test...

    Open Energy Info (EERE)

    Pershing County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Lithology and well log study of Campbell E-2 geothermal test well,...

  7. Using Interactive Visualizations of WWW Log Data to Characterize Access Patterns and Inform Site Design

    E-Print Network [OSTI]

    Golbeck, Jennifer

    Design Harry Hochheiser, Ben Shneiderman* Human­Computer Interaction Lab, Department of Computer Science, and facilities for zooming and filtering, these visualizations provide capabilities for examining data World Wide Web, Web Site Design, Log File Analysis, Information Visualization, Human

  8. Using Interactive Visualizations of WWW Log Data to Characterize Access Patterns and Inform Site Design

    E-Print Network [OSTI]

    Golbeck, Jennifer

    Design Harry Hochheiser, Ben Shneiderman* Human-Computer Interaction Lab, Department of Computer Science, and facilities for zooming and filtering, these visualizations provide capabilities for examining data World Wide Web, Web Site Design, Log File Analysis, Information Visualization, Human

  9. A Semantic Perspective on Query Log Analysis Katja Hofmann Maarten de Rijke Bouke Huurnink Edgar Meij

    E-Print Network [OSTI]

    de Rijke, Maarten

    A Semantic Perspective on Query Log Analysis Katja Hofmann Maarten de Rijke Bouke Huurnink Edgar Meij ISLA, University of Amsterdam k.hofmann@uva.nl, mdr@science.uva.nl bhuurnink@uva.nl, edgar

  10. Interpretation of Array Production Logging Measurements in Horizontal Wells for Flow Profile

    E-Print Network [OSTI]

    Liao, Lulu

    2013-12-12T23:59:59.000Z

    and possible back flow of denser phases result in misinterpretation of the inflow distribution. To assess the downhole flow conditions more accurately, logging tools have been developed to overcome the flow regime related issues. Multiple-sensor array tools...

  11. Reduced impact logging minimally alters tropical rainforest carbon and energy exchange

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Brazil | Amazon | land use | micrometeorology D eforestation in the tropics affects the land–atmosphere ex- change of trace gases and energyand energy (W·m ?2 ) ?uxes, calculated as (? = logged ? unlogged), in Tapajos National Forest, Para, Brazil.

  12. FORTRAN algorithm for correcting normal resistivity logs for borehold diameter and mud resistivity

    SciTech Connect (OSTI)

    Scott, J H

    1983-01-01T23:59:59.000Z

    The FORTRAN algorithm described was developed for applying corrections to normal resistivity logs of any electrode spacing for the effects of drilling mud of known resistivity in boreholes of variable diameter. The corrections are based on Schlumberger departure curves that are applicable to normal logs made with a standard Schlumberger electric logging probe with an electrode diameter of 8.5 cm (3.35 in). The FORTRAN algorithm has been generalized to accommodate logs made with other probes with different electrode diameters. Two simplifying assumptions used by Schlumberger in developing the departure curves also apply to the algorithm: (1) bed thickness is assumed to be infinite (at least 10 times larger than the electrode spacing), and (2) invasion of drilling mud into the formation is assumed to be negligible.

  13. Technical memorandum on analysis of the EU ETS using the community independent transaction log

    E-Print Network [OSTI]

    McGuinness, Meghan

    2007-01-01T23:59:59.000Z

    This memorandum provides an overview of three deficiencies within the current presentation of the Community Independent Transaction Log (CITL) data that have implications for researchers' ability to accurately analyze the ...

  14. Precise inversion of logged slownesses for elastic parameters in a gas shale formation

    E-Print Network [OSTI]

    Miller, Douglas E.

    Dipole sonic log data recorded in a vertical pilot well and the associated production well are analyzed over a 200×1100-ft section of a North American gas shale formation. The combination of these two wells enables angular ...

  15. Study of well logs from Cove Fort-Sulphurdale KGRA, Millard and Beaver Counties, Utah

    SciTech Connect (OSTI)

    Glenn, W.E.; Ross, H.P.

    1982-07-01T23:59:59.000Z

    Union Oil Company drilled four geothermal test wells in the Cove Fort-Sulphurdale KGRA between 1975 and 1979. A fairly complete suite of well logs were recorded for the three deeper holes, and these data are presented as composite well log plots in this report. The composite well log plots have facilitated the interpretation of limestone, dolomite, sandstone, quartz-monzonite, serpentine, and volcanic lithologies and the identification of numerous fractures. This has been especially helpful because of the extensive lost circulaton zones and poor cuttings recovery. Intraformational flow was identified by a fluid migration-temperature tracer log at depth in CFSU 31-33. Well log crossplots were computed to assist in lithologic identification and the determination of physical properties for specific depth intervals in a given hole. The presence of hydrous minerals sometimes results in neutron porosity somewhat higher than the true nonfracture porosity, which is generally less than 4%. Permeability is clearly controlled by fractures. A maximum well temperature of 178.9/sup 0/C, low flow rates and low probable percent flash indicate these wells are subeconomic for electric generation at present. The well log study has substantially improved our understanding of the reservoir as presently drilled.

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

    SciTech Connect (OSTI)

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

    1991-07-01T23:59:59.000Z

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

  17. Short Sales in Log-Robust Portfolio Management

    E-Print Network [OSTI]

    2008-12-24T23:59:59.000Z

    sales, i.e., the case where the manager can sell shares he does not yet own. We model .... We analyze the case of independent assets in Section 2. We extend ...

  18. Category:Pressure Temperature Log | 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, click here. Category:Conceptual ModelListsPolitical Action Committees Jump

  19. Response transforms from comparative study of commercial pulsed-neutron-capture logging systems

    SciTech Connect (OSTI)

    Salaita, G.N. (Chevron Oil Field Research Co., La Habra, CA (United States))

    1992-09-01T23:59:59.000Z

    This paper reports that three generations of Schlumberger's Thermal Decay Time (TDT{sup SM}) logging devices - viz., TDT-K, TDT-M, and TDT-P - along with an Atlas Wireline PDK-100{sup SM} system were run in a Saudi Aramco well. The wellbore (8 1/2 in. with 7-in. casing) penetrated a sequence of clean sand, shaly sand, and shale streaks as exhibited by the openhole natural gamma ray log. The initial wellbore fluid was diesel. The fluid was then changed to brines of 42,000 and 176,000 ppm NaCl, respectively. Three repeat passes at a logging speed of 900 ft/hr were obtained by each device for each borehole liquid. As a result of this extensive comparative study, a set of departure curves and mathematical transforms was developed primarily for standardizing the various Schlumberger tools to a common reference logging system and/or borehole environment. The transforms were used beneficially to determine residual oil saturation (ROS) from time-lapse logs in a Saudi Aramco reservoir.

  20. Evaluation of Simple Causal Message Logging for Large-Scale Fault Tolerant HPC Systems

    SciTech Connect (OSTI)

    Bronevetsky, G; Meneses, E; Kale, L V

    2011-02-25T23:59:59.000Z

    The era of petascale computing brought machines with hundreds of thousands of processors. The next generation of exascale supercomputers will make available clusters with millions of processors. In those machines, mean time between failures will range from a few minutes to few tens of minutes, making the crash of a processor the common case, instead of a rarity. Parallel applications running on those large machines will need to simultaneously survive crashes and maintain high productivity. To achieve that, fault tolerance techniques will have to go beyond checkpoint/restart, which requires all processors to roll back in case of a failure. Incorporating some form of message logging will provide a framework where only a subset of processors are rolled back after a crash. In this paper, we discuss why a simple causal message logging protocol seems a promising alternative to provide fault tolerance in large supercomputers. As opposed to pessimistic message logging, it has low latency overhead, especially in collective communication operations. Besides, it saves messages when more than one thread is running per processor. Finally, we demonstrate that a simple causal message logging protocol has a faster recovery and a low performance penalty when compared to checkpoint/restart. Running NAS Parallel Benchmarks (CG, MG and BT) on 1024 processors, simple causal message logging has a latency overhead below 5%.

  1. Category:Well Log Techniques | 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, click here.Telluric Survey as explorationpage? For detailed information on

  2. Chemical Logging At Dixie Valley Geothermal Area (Los Alamos National

    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, click here.Telluric SurveyChelan County, Washington: EnergyChemical

  3. Chemical Logging At North Brawley Geothermal Area (Department, 1979) | 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 You are beingZealand JumpConceptual Model, click here.Telluric SurveyChelan County, Washington: EnergyChemicalEnergy

  4. Chemical Logging At Raft River Geothermal Area (1979) | 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 JumpConceptual Model, click here.Telluric SurveyChelan County, Washington:

  5. FMI Log At Maui 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 JumpConceptual Model,DOEHazelPennsylvania: EnergyExolis Energy JumpFAC 04-08-DOE GTP) Jump

  6. Descriptive logs, skeletonized samples, and photographs of core from Presco

    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: Energy Resources(Redirected

  7. Filtrations in Dyson-Schwinger equations: next-to^{j} -leading log expansions systematically

    E-Print Network [OSTI]

    Olaf Krueger; Dirk Kreimer

    2015-02-11T23:59:59.000Z

    Dyson-Schwinger equations determine the Green functions $G^r(\\alpha,L)$ in quantum field theory. Their solutions are triangular series in a coupling constant $\\alpha$ and an external scale parameter $L$ for a chosen amplitude $r$, with the order in $L$ bounded by the order in the coupling. Perturbation theory calculates the first few orders in $\\alpha$. On the other hand, Dyson--Schwinger equations determine next-to$^{\\{\\mathrm{j}\\}}$-leading log expansions, $G^r(\\alpha,L) = 1 + \\sum_{j=0}^\\infty \\sum_{\\mathcal{M}} p_j^{\\mathcal{M}}\\alpha^j \\mathcal{M}(u)$. $\\sum_{\\mathcal{M}}$ sums a finite number of functions $\\mathcal{M}$ in $u = \\alpha L/2$. The leading logs come from the trivial representation $\\mathcal{M}(u) = \\begin{bsmallmatrix}\\bullet\\end{bsmallmatrix}(u)$ at $j=0$ with $p_0^{\\begin{bsmallmatrix}\\bullet\\end{bsmallmatrix}} = 1$. All non-leading logs are organized by the suppression in powers $\\alpha^j$. We describe an algebraic method to derive all next-to$^{\\{\\mathrm{j}\\}}$-leading log terms from the knowledge of the first $(j+1)$ terms in perturbation theory and their filtrations. This implies the calculation of the functions $\\mathcal{M}(u)$ and periods $p_j^\\mathcal{M}$. In the first part of our paper, we investigate the structure of Dyson-Schwinger equations and develop a method to filter their solutions. Applying renormalized Feynman rules maps each filtered term to a certain power of $\\alpha$ and $L$ in the log-expansion. Based on this, the second part derives the next-to$^{\\{\\mathrm{j}\\}}$-leading log expansions. Our method is general. Here, we exemplify it using the examples of the propagator in Yukawa theory and the photon self-energy in quantum electrodynamics. The reader may apply our method to any (set of) Dyson-Schwinger equation(s) appearing in renormalizable quantum field theories.

  8. Log of a young author's thinking: George W. Cable's "Drop Shot".

    E-Print Network [OSTI]

    Sinitiere, Autry James

    1974-01-01T23:59:59.000Z

    . . t 1974 Major Subject: English LOG OF A YOUNG AUTHOR'S THINKING: GEORGE W CABLE'S "DROP SHOT" A Thesis by AUTRY JAMES SINITIERE Approved as to style and content by: Chairman of Committe Hea of Department M er ember) August 1974 & s ~~. )$, gg... APSTRACT Log of a Young Author's Thinking: George W. Cable's "Drop Shot" (August 1974) Autry James Sinitiere, B. A. , College of Santa Fe Chairman of Advisory Committee: Dr Richard H. Ballinger In February 1870 George W. Cable began writing a * p p...

  9. Non-Archimedian integrals and stringy Euler numbers of log terminal pairs

    E-Print Network [OSTI]

    Victor V. Batyrev

    1998-03-16T23:59:59.000Z

    Using non-Archimedian integration over spaces of arcs of algebraic varieties, we define stringy Euler numbers associated with arbitrary Kawamata log terminal pairs. There is a natural Kawamata log terminal pair corresponding to an algebraic variety V having a regular action of a finite group G. In this situation we show that the stringy Euler number of this pair coincides with the physicists' orbifold Euler number defined by the Dixon-Harvey-Vafa-Witten formula. As an application, we prove a conjecture of Miles Reid on the Euler numbers of crepant desingularizations of Gorenstein quotient singularities.

  10. Logging In Submi ng Assignments To begin th eLogin process, irstnavigateto th eLA

    E-Print Network [OSTI]

    Selmic, Sandra

    epassw ord th atw asassigned to you foryourTech em ailaddress. 3. Now ,clickth e"LogIn"button. Accessing

  11. Fact sheet EU poll illegal timber trade Illegal logging and related timber trade

    E-Print Network [OSTI]

    March 2009 Fact sheet EU poll illegal timber trade Illegal logging and related timber trade Illegal level is needed to halt the trade in illegal timber and timber products on the European market trade. It has clarified obligations for all companies in the supply chain to prove the legality

  12. Do We Need a $15 Million "Illegal Logging Initiative?" by Alan Caruba

    E-Print Network [OSTI]

    harvest by law or represent slow-growing woodlands unsuitable for timber production. Some 490 million no timber may be extracted. You may recall that the Greens have been trying for decades to stop any logging as a "nonprofit organization dedicated to public-private partnerships to protect land and water resources." Let me

  13. Prediction of pressure depletion from wireline and mud logs, Golden Trend field, Garvin County, Oklahoma

    SciTech Connect (OSTI)

    Sorenson, R.P.; White, F.W.; Struckel, J.C.

    1987-08-01T23:59:59.000Z

    The Golden Trend, a giant oil field encompassing several overlapping Pennsylvanian stratigraphic traps on the eastern flank of the Anadarko basin, has undergone a resurgence in the 1980s with deeper drilling for pre-Pennsylvanian targets. Approximately 200 new wells in and near the Antioch Southwest, Panther Creek, and Elmore Northeast waterflood units (T2, 3N, R2, 3W) have encountered evidence of undrained reserves in both established and new pay intervals of Pennsylvanian Hart and Gibson sandstones. Although all porous Hart and Gibson sandstones in the study area were originally oil bearing, evaluation of the state of depletion is necessary for planning future recompletions to these reservoirs. In general, wireline and mud logs over intervals with known production histories exhibit characteristics suggestive of pressure depletion, even in areas of old waterfloods. The most consistent parameters correlating to low reservoir pressure are lost circulation, lack of an increase in penetration rate when drilling porous sandstone, excessive gas effect on neutron-density logs, and low methane and total gas levels on the mud logs. The resistivity invasion profile also reflects lower pressure, but is subtle. The SP curve and gas composition on the mud log do not vary substantially as a function of pressure. Visual sample shows are slightly weaker in depleted sandstones, but are less reliable, owing to dependence on reservoir quality and variations between geologists on oral descriptions of show quality.

  14. Small Log Conference Creating Capacity to Compete Coeur d'Alene, Idaho, USA, 1 April 2005

    E-Print Network [OSTI]

    Assessment · UNECE Timber Committee market forecasts · UNECE/FAO Timber Bulletin "Forest products annual Forest Sector Outlook Study · FAO State of the World's Forests, 2005 #12;Small Log Conference ­ Creating countries · Low value · Modern wood energy ­ Small international trade ­ Growing market ­ Policy push

  15. Weekly Security Incident Log Period of Aug 12 -Aug 18, 2013

    E-Print Network [OSTI]

    2013-001248 THOMPSON ROAD Gas leak Security , Toronto Fire, Toronto Police, and Occupational Health and Safety responded to a report of a natural gas leak in the area of the Life Science BuildingWeekly Security Incident Log Period of Aug 12 - Aug 18, 2013 Incident No. Reported Date Building

  16. Weekly Security Incident Log Period of Feb 6 -Feb 12, 2012

    E-Print Network [OSTI]

    Gas leak Security and Toronto Fire responded to a report of a natural gas odour in B-wing. TorontoWeekly Security Incident Log Period of Feb 6 - Feb 12, 2012 Incident No. Reported Date Building\\Const. Security, York Fire Prevention and Toronto Fire responded to a fire alarm. The cause of the alarm

  17. Weekly Security Incident Log Period of Jul 9 -Jul 15, 2012

    E-Print Network [OSTI]

    and Safety responded to a report of a natural gas odour in the building. The building was checked and no natural gas was found. Toronto Fire determined that all was in order. 7/12/2012 07:31 AM HazardousWeekly Security Incident Log Period of Jul 9 - Jul 15, 2012 Incident No. Reported Date Building

  18. Weekly Security Incident Log Period of Apr 29 -May 5, 2013

    E-Print Network [OSTI]

    2013-000845 YORK LANES RETAIL Gas leak Security, Toronto Fire and Enbridge Gas responded to a report of a natural gas odour in the building. The source of the odour was located in a restaurant kitchen. EnbridgeWeekly Security Incident Log Period of Apr 29 - May 5, 2013 Incident No. Reported Date Building

  19. Many sawmills use sprinkler systems to maintain the moisture content of logs above the fiber satura-

    E-Print Network [OSTI]

    Balasundaram, Balabhaskar "Baski"

    secondary breakdown. A headrig is a machine center consisting of one or more cutting tools that influences Oklahoma Cooperative Extension Service · Division of Agricultural Sciences and Natural Resources FAPC-165, includ- ing what occurs in the log yard, primary breakdown, secondary breakdown, sorting and planing

  20. Learn from Web Search Logs to Organize Search Results Xuanhui Wang

    E-Print Network [OSTI]

    Zhai, ChengXiang

    and Subject Descriptors: H.3.3 [Informa- tion Search and Retrieval]: Clustering, Search process General TermsLearn from Web Search Logs to Organize Search Results Xuanhui Wang Department of Computer Science Effective organization of search results is critical for improv- ing the utility of any search engine

  1. Log-Gamma Polymer Free Energy Fluctuations via a Fredholm Determinant Identity

    E-Print Network [OSTI]

    Borodin, Alexei

    We prove that under n[superscript 1/3] scaling, the limiting distribution as n ? ? of the free energy of Seppalainen’s log-Gamma discrete directed polymer is GUE Tracy-Widom. The main technical innovation we provide is a ...

  2. Annual Logging Symposium, June 3-6, 2007 RAPID SIMULATION OF BOREHOLE NUCLEAR MEASUREMENTS

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    MEASUREMENTS WITH APPROXIMATE SPATIAL FLUX-SCATTERING FUNCTIONS A. Mendoza, and C. Torres and benchmark fast approximate numerical procedures to simulate neutron and density porosity logs making use of Monte Carlo-derived spatial flux- scattering functions (FSFs) for specific nuclear tool configurations

  3. Speech Enhancement of Noisy Speech Using Log-Spectral Amplitude Estimator and Harmonic Tunneling

    E-Print Network [OSTI]

    Wichmann, Felix

    Speech Enhancement of Noisy Speech Using Log-Spectral Amplitude Estimator and Harmonic Tunneling we present a two stage noise reduction algo- rithm for speech enhancement. The speech noise removal and decreases the performance of speech coding and speech recog- nition systems. In speech enhancement

  4. University of Connecticut Daily Temperature Log for Unit Based Medication Refrigerators

    E-Print Network [OSTI]

    Oliver, Douglas L.

    University of Connecticut Daily Temperature Log for Unit Based Medication Refrigerators Month: If the refrigerator temperature falls out of the acceptable range of 36 to 46 degrees Fahrenheit or 2.2 to 7.7 degrees. * If the refrigerator temperature falls out of range please document your actions in the follow-up column. #12;

  5. Weekly Security Incident Log Period of May 14 -May 20, 2012

    E-Print Network [OSTI]

    Weekly Security Incident Log Period of May 14 - May 20, 2012 Incident No. Reported Date Building-000955 PARKING GARAGE - ARBORETUM LANE (PS2) Mech\\Electrical Security responded to a report that an automotive York Security responded to a report of an unknown male causing a disturbance in the food court

  6. The Helium Logging Facility Jurriaan Hage (jur@cs.uu.nl)

    E-Print Network [OSTI]

    Utrecht, Universiteit

    The Helium Logging Facility Jurriaan Hage (jur@cs.uu.nl) institute of information and computing sciences, utrecht university technical report UU-CS-2005-055 www.cs.uu.nl #12;Abstract Helium is a compiler experiences in using socket communication for the purpose. 1 #12;1 Introduction The Helium compiler implements

  7. THE HISTORICAL DENDROARCHAEOLOGY OF TWO LOG STRUCTURES AT THE MARBLE SPRINGS HISTORIC SITE, KNOX

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    THE HISTORICAL DENDROARCHAEOLOGY OF TWO LOG STRUCTURES AT THE MARBLE SPRINGS HISTORIC SITE, KNOX as a significant heritage site for the state of Tennessee because it was the final home of one of our nation's most. Recent archaeological and historical research had called into question the authenticity of the original

  8. Log Design for Accountability Denis Butin, Marcos Chicote and Daniel Le Metayer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , the logs we examine here record actions by data controllers handling personally identifiable information or identity theft can arise through criminal obtainment of PII. To address these threats, legislation on how safeguards for the private sector and the 1974 Privacy Act [7] does so for government agencies. In practice

  9. 2003 Horseshoe Beach Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  10. 2004 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  11. 2002 Dog Island Lease Area, Levy County Quality Assurance/Quality Control (AQ/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (AQ/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  12. 2003 Body A Lease Area, Brevard County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  13. 2003 Pine Island Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  14. 2002 Body A Lease Area, Brevard County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  15. 2002 Pine Island Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  16. 2003 Dog Island Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  17. 2003 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  18. 2002 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  19. How to produce a turbo equalization system with complexity O(logL)?

    E-Print Network [OSTI]

    Huang, Jianwei

    How to produce a turbo equalization system with complexity O(logL)? by Professor Defeng Huang University of Hong Kong Abstract Following the great success of turbo codes in 1993, turbo equalization-symbol interference channels. However, for more than 15 years, the prohibitive complexity of turbo equalization has

  20. High Speed Max-Log-MAP Turbo SISO Decoder Implementation Using Branch Metric Normalization

    E-Print Network [OSTI]

    Arslan, Tughrul

    High Speed Max-Log-MAP Turbo SISO Decoder Implementation Using Branch Metric Normalization J. H.Erdogan@ee.ed.ac.uk, Tughrul.Arslan@ee.ed.ac.uk Abstract The authors present a turbo soft-in soft-out (SISO) decoder based. The turbo decoder with the proposed technique has been synthesized to evaluate its power consumption

  1. Transactional In-Page Logging for Multiversion Read Consistency and Recovery

    E-Print Network [OSTI]

    Moon, Bongki

    . INTRODUCTION Since solid state drives (SSDs) based on NAND type flash memory were introduced to the storage@cs.arizona.edu Abstract--Recently, a new buffer and storage management strategy called In-Page Logging (IPL) has been, the IPL scheme provides unique opportunities to design light-weight transactional support for database

  2. Android Diabetes Log Book E-mail: kongkamol@kku.ac.th

    E-Print Network [OSTI]

    Runapongsa, Kanda

    Android Diabetes Log Book 1 2 3 1 . . 40002 2, 3 . . 40002 E-mail: kongkamol@kku.ac.th Abstract Diabetes is a chronic disease, of which the patients have to continually monitor their health conditions. Keywords: android application, diabetes 4.07 5.00 , 1. 285 . . 2573 435 . . 2552 558,156 7,019 [1] 15 7% [2

  3. Petrophysical inversion of borehole array-induction logs: Part I --Numerical examples

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    to mud-filtrate invasion. We use a rigorous formulation to account for the physics of fluid displacement in porous media resulting from water-base mud filtrate invading hydrocarbon- bearing rock formations inversion experiments using noisy synthetic wireline logs. The inversion requires a priori knowledge

  4. Quantitative interpretation of pulsed neutron capture logs: Part 2 --Inversion of measurements in thinly bedded

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    across beds thinner than 45 cm. Our fast, iterative algorithm inverts R logs in seconds of CPU time and numerical solutions. However, no interpreta- tion schemes have been advanced to account for diffusion functions (FSFs) -- together with a 1D (vertical) neutron-diffusion correction. The speed and accu- racy

  5. Lawson Job Description Look Up Instructions for Managers Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Look Up Instructions for Managers · Log In to Lawson o Lawson Web Address Lawson e-mail your password to you. Updated 3/15/10 Page 1 of 5 #12;Lawson Job Description Look Up Instructions for Managers · Click "Job Descriptions" from Manager Central Section, sub-section Requirements

  6. Logging and the Law How the U.S. Lacey Act Helps Reduce

    E-Print Network [OSTI]

    to cut global warming pollution by reducing tropical deforestation. More information about UCS a r y 3 C h a p t e r o n e introduction 4 Illegal Logging and Associated Trade 4 Causes of Illegal t e r f o U r global Benefits of the lacey act 14 Economic Benefits 15 Societal Benefits 16

  7. An Integrated Framework on Mining Logs Files for Computing System Management

    E-Print Network [OSTI]

    Li, Tao

    . The data in the log files describe the status of each component and record system operational changes data have been less emphasized in existing analysis methods from data mining and machine learning and relatively short text messages in data reporting, asynchronism in data collection, and temporal character

  8. Mining Logs Files for Computing System Management Wei Peng, Tao Li

    E-Print Network [OSTI]

    Li, Tao

    reporting, asynchronous data collection, and temporal characteristics in data representation. FirstMining Logs Files for Computing System Management Wei Peng, Tao Li School of Computer Science experts through a knowledge acquisition process to translate domain knowl- edge into operating rules

  9. Annual Logging Symposium, June 3-6, 2007 COMBINED SIMULATION AND INVERSION OF SP AND RESISTIVITY

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    2007, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting method to two data sets acquired in clastic formations. One data set corresponds to a high allows us to apply the physics of mud-filtrate invasion to estimate permeability. By progressively

  10. Petrophysical inversion of borehole array-induction logs: Part II --Field data examples

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Petrophysical inversion of borehole array-induction logs: Part II -- Field data examples Carlos with over 30,000 wells Sorenson, 2005 . Reservoir flow units consist of rela- tively thin 2­10 m marine carbonates along with fine-grained clastics and shales. The penetrated thickness of the formation in the two

  11. Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and

    E-Print Network [OSTI]

    Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and Seismic and gas explaining the high hydrate concentrations at shallow depths of less than 100 meters below of the degree of Master of Science © Xuan Wang 2009 #12; i ABSTRACT This thesis presents estimates of gas

  12. Improved Indoor Tracking Based on Generalized t-Distribution Noise Model

    E-Print Network [OSTI]

    Shuo, Liu; Le, Yin; Khuen, Ho Weng; Voon, Ling Keck

    2015-01-01T23:59:59.000Z

    log-distance path loss model (PLM) is commonly used [20]. Itclustered near the fitted PLM curve. B. Tracking of A Moving

  13. Supply Assessment of Forest Logging Residues and Non-Sawlog Biomass in the Vicinity of Missoula, Montana, 2011-2013

    E-Print Network [OSTI]

    Vonessen, Nikolaus

    1 Supply Assessment of Forest Logging Residues and Non-Sawlog Biomass in the Vicinity of Missoula logging slash and non-sawlog biomass are commonly disposed of in the forest through piling and open biomass sources such as forest inventories, planned projects on other landownerships, and mill residues

  14. Outline Directed polymers Log-gamma polymer KPZ equation Fluctuation exponents for certain 1+1 dimensional

    E-Print Network [OSTI]

    Seppäläinen, Timo

    Outline Directed polymers Log-gamma polymer KPZ equation Fluctuation exponents for certain 1+1 dimensional directed polymers Timo Sepp¨al¨ainen Department of Mathematics University of Wisconsin-Madison MSRI December 2010 Fluctuation exponents for polymers 1/36 #12;Outline Directed polymers Log

  15. Detecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw@cs.berkeley.edu

    E-Print Network [OSTI]

    Jordan, Michael I.

    . Researchers and operators have been using all kinds of mon- itoring data, from the simplest numerical metrics Problems by Mining Console Logs part operator, and charged with fixing the problem-- are usuallyDetecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw@cs.berkeley.edu EECS

  16. Softmax-Margin Training for Structured Log-Linear Models Kevin Gimpel Noah A. Smith

    E-Print Network [OSTI]

    Eskenazi, Maxine

    a bound on risk via Jensen's inequality--which we call the Jensen risk bound--that is easier to implement

  17. Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling

    E-Print Network [OSTI]

    Mukhopadhyay, S.

    2009-01-01T23:59:59.000Z

    have assumed the same rock properties for the entire packed-earlier, among the rock properties (permeability, porosity,However, these are not rock properties and are constrained

  18. Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling

    E-Print Network [OSTI]

    Mukhopadhyay, S.

    2009-01-01T23:59:59.000Z

    that specific heat capacity, initial liquid saturation, andSpecific heat capacity Gas Saturation Liquid saturationheat capacity from FFTL, more precision in measurement is needed. Liquid

  19. A Model for Water Factor Measurements With Fission-Neutron Logging Tools

    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 China 2015ofDepartmentDepartment of Energy ThisThis guide is designedJamesDaniel

  20. Log In

    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 for4,645 3,625 1,006 492 742EnergyOnItemResearch > The EnergyCenter (LMI-EFRC) - CenterLinks BerkeleyLiving well, Search

  1. Log Summarization

    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 Science (SC)Integrated Codes |Is Your HomeLatestCenter (LMI-EFRC)DepartmentSecurityLodging

  2. Outage Log

    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 Science (SC)IntegratedSpeeding access toTest andOptimize carbonOther FileDustyOur HistoryOurOutage

  3. Hislop Log

    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. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High SchoolBundles toHiring Reconstructionand

  4. Solid Waste Information and Tracking System (SWITS) data change request log

    SciTech Connect (OSTI)

    McKay, R.B.

    1994-08-18T23:59:59.000Z

    The Data Change Request (DCR) log is designed to promote data integrity within the Solid Waste Information and Tracking System (SWITS). It achieves this function by providing a record of all data changes performed on the database. This document contains records of those data changes from March 91 through June 94. The DCR log is also a supplement to an electronic database -- the DCR Tracking System, which provides an electronic record of all data changes preformed on the SWITS database. The records found in this document are Data Change Request forms. These forms are required for SWITS users who wish to request data changes in the database. The procedure formalizing this policy did not go into effect until September 1, 1994; therefore, some records created before that date may be incomplete.

  5. A UNIX security log analyzer based on from/to access matrix 

    E-Print Network [OSTI]

    El-Haj Mahmoud, Samer Ahmad

    2002-01-01T23:59:59.000Z

    -Chairs of Advisory Committee: Dr. U . Pooch Dr. A . L . N . Reddy System log files are valuable assets in detecting security violations and malicious attacks as well as in holding users responsible for their actions. However, the huge size of these logs makes... Page A B S T R A C T i i i DEDICATION iv A C K N O W L E D G M E N T S v T A B L E OF CONTENTS vi LIST OF FIGURES viii LIST OF T A B L E S ix CHAPTER I INTRODUCTION 1 1.1 The Rise of Computer Crime 1 1.2 Importance of Computer Security 2 1...

  6. Log-Gamma polymer free energy fluctuations via a Fredholm determinant identity

    E-Print Network [OSTI]

    Alexei Borodin; Ivan Corwin; Daniel Remenik

    2012-06-20T23:59:59.000Z

    We prove that under n^{1/3} scaling, the limiting distribution as n goes to infinity of the free energy of Seppalainen's log-Gamma discrete directed polymer is GUE Tracy-Widom. The main technical innovation we provide is a general identity between a class of n-fold contour integrals and a class of Fredholm determinants. Applying this identity to the integral formula proved in [Corwin-O'Connell-Seppalainen-Zygouras] for the Laplace transform of the log-Gamma polymer partition function, we arrive at a Fredholm determinant which lends itself to asymptotic analysis (and thus yields the free energy limit theorem). The Fredholm determinant was anticipated in [Borodin-Corwin] via the formalism of Macdonald processes yet its rigorous proof was so far lacking because of the nontriviality of certain decay estimates required by that approach.

  7. Field geologist's training guide: An introduction to oilfield geology, mud logging and formation evaluation

    SciTech Connect (OSTI)

    Whittaker, A.

    1985-01-01T23:59:59.000Z

    This handbook presents a basic overview of and introduction to petroleum geology, oilfield terminolgy and formation evaluation procedures. The chapters introduce many key concepts. Petroleum geology, oilfield fluids, rig types and their components, wellsite equipment and the environment in which field geologists work are presented in detail. Drilling and completing a well and formation evaluation procedures are examined from the logging geologist's perspective. The appendices contain a wide range of information such as general abbreviations, glossary, and bit classification.

  8. Evaluation of Non-Nuclear Techniques for Well Logging: Final Report

    SciTech Connect (OSTI)

    Bond, Leonard J.; Griffin, Jeffrey W.; Harris, R. V.; Denslow, Kayte M.; Moran, Traci L.

    2011-08-01T23:59:59.000Z

    The focus of this study is the understanding of the technical obstacles that hinder the replacement of and the disadvantages from the loss of extensive interpretation experience based on data accumulated with AmBe. Enhanced acoustic and electromagnetic sensing methods in combination with non-isotope-based well logging techniques have the potential to complement and/or replace existing isotope-based techniques, providing the opportunity to reduce oil industry dependence on isotopic sources such as AmBe.

  9. Analysis of historical gross gamma logging data from TY tank farm

    SciTech Connect (OSTI)

    MYERS, D.A.

    1999-10-19T23:59:59.000Z

    Gross gamma ray logs, recorded from January 1975 through mid-year 1994 as part of the Single-Shell Tank Farm Dry Well Surveillance Program, have been reanalyzed for the TY tank farm to locate the presence of mobile radionuclides in the subsurface. This report presents the TY tank farm gross gamma ray data in such a way as to assist others in their study of vadose zone mechanism.

  10. The effects of composition and bedding on log response, Yowlumne sandstone, Kern County, California

    E-Print Network [OSTI]

    Fortner, David William

    1988-01-01T23:59:59.000Z

    southwest of Bakersfield (Figures 3 and 4). Stratigraphy The Yowlumne sandstone is Upper Miocene (Mohnian) in age and is found as an isolated, lenticular body of sand within the Antelope Shale member of the Monterey Formation (Table 1) . Upper Miocene...THE EFFECTS OF COMPOSITION AND BEDDING ON LOG RESPONSE, YOWLUMNE SANDSTONE, KERN COUNTY, CALIFORNIA A Thesis by DAVID WILLIAM FORTNER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  11. Estimators and characteristics of logging residue in California. Forest Service research paper

    SciTech Connect (OSTI)

    Howard, J.O.; Bulgrin, J.K.

    1986-03-01T23:59:59.000Z

    Ratios are presented for estimating volume and characteristics of logging residue. The ratios relate cubic-foot volume of residue to thousand board feet of timber harvested and to acres harvested. Tables show gross and net volume of residue with and without bark, by diameter and length classes, by number of pieces per acre, by softwoods and hardwoods, by percent soundness, and by degree of slope and distance to roads.

  12. Airborne LiDAR Detects Selectively Logged Tropical Forest Even in an Advanced Stage of Recovery

    E-Print Network [OSTI]

    Kent, Rafi; Lindsell, Jeremy A.; Laurin, Gaia Vaglio; Valentini, Riccardo; Coomes, David A.

    2015-01-01T23:59:59.000Z

    logged tropical forests: the attained and the attainable. Conserv. Lett. 2012, 5, 296–303. 10. Silver, W. L.; Ostertag, R.; Lugo, a. E. The Potential for Carbon Sequestration Through Reforestation of Abandoned Tropical Agricultural and Pasture Lands... forests can be of high conservation value [2,7–9] and act as globally-important carbon sinks [9–12]. However, there is much uncertainty regarding the changing extent of regenerating forests, their rate and stage of recovery, and the influence...

  13. The Northwest Geysers EGS Demonstration Project Phase 1: Pre-stimulation coupled geomechanical modeling to guide stimulation and monitoring plans

    E-Print Network [OSTI]

    Rutqvist, J.

    2012-01-01T23:59:59.000Z

    geophysical logs and rock property data from previous coreincorporation of rock properties from previous unpublishedProject. Table 1. Rock properties for modeling of the

  14. Method of assaying uranium with prompt fission and thermal neutron borehole logging adjusted by borehole physical characteristics. [Patient application

    DOE Patents [OSTI]

    Barnard, R.W.; Jensen, D.H.

    1980-11-05T23:59:59.000Z

    Uranium formations are assayed by prompt fission neutron logging techniques. The uranium in the formation is proportional to the ratio of epithermal counts to thermal or epithermal dieaway. Various calibration factors enhance the accuracy of the measurement.

  15. Dendrochronology of the Wixson Road Log Cabin and Benjamin Patterson Inn, Corning-Painted Post Historical Society, Corning, NY

    E-Print Network [OSTI]

    Manning, Sturt

    in 1838, 1855, and again in 1863. In the NYS Census for 1865, the house was described as "log Patterson Inn with its well- documented 1796 building date and the patterns of a modern oak chronology

  16. Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994

    SciTech Connect (OSTI)

    Geslin, J.K.; Moyer, T.C.; Buesch, D.C.

    1995-05-01T23:59:59.000Z

    Yucca Mountain, Nevada, is being investigated as a potential site for a high-level radioactive waste repository. This report summarizes the lithologic logging of new and existing boreholes at Yucca Mountain that was done from August 1993 to February 1994 by the Rock Characteristics Section, Yucca Mountain Project Branch, US Geological Survey (USGS). Units encountered during logging include Quaternary-Tertiary alluvium/colluvium, Tertiary Rainier Mesa Tuff, all units in the Tertiary Paintbrush Group, Tertiary Calico Hills Formation and Tertiary Prow Pass Tuff. We present criteria used for recognition of stratigraphic contacts, logging results as tables of contact depths for core from neutron (UZN) boreholes and graphical lithologic logs for core from non-UZN boreholes, and descriptions of several distinctive nonwelded tuffs recognized in the PTn hydrogeologic unit of the Paintbrush Group.

  17. Detection of Late Cretaceous and Cenozoic sequence boundaries on the Atlantic coastal plain using core log integration

    E-Print Network [OSTI]

    at the Navesink/Mount Laurel formation contact and can be attributed to high uranium concentration in phosphorite lithological contrasts to be expressed in the NGR and/or MS logs. INDEX TERMS: 0915 Exploration Geophysics

  18. Recovery Efficiency Test Project: Phase 1, Activity report. Volume 1: Site selection, drill plan preparation, drilling, logging, and coring operations

    SciTech Connect (OSTI)

    Overbey, W.K. Jr.; Carden, R.S.; Kirr, J.N.

    1987-04-01T23:59:59.000Z

    The recovery Efficiency Test well project addressed a number of technical issues. The primary objective was to determine the increased efficiency gas recovery of a long horizontal wellbore over that of a vertical wellbore and, more specifically, what improvements can be expected from inducing multiple hydraulic fractures from such a wellbore. BDM corporation located, planned, and drilled a long radius turn horizontal well in the Devonian shale Lower Huron section in Wayne County, West Virginia, demonstrating that state-of-the-art technology is capable of drilling such wells. BDM successfully tested drilling, coring, and logging in a horizontal well using air as the circulating medium; conducted reservoir modeling studies to protect flow rates and reserves in advance of drilling operations; observed two phase flow conditions in the wellbore not observed previously; cored a fracture zone which produced gas; observed that fractures in the core and the wellbore were not systematically spaced (varied from 5 to 68 feet in different parts of the wellbore); observed that highest gas show rates reported by the mud logger corresponded to zone with lowest fracture spacing (five feet) or high fracture frequency. Four and one-half inch casting was successfully installed in the borehole and was equipped to isolate the horizontal section into eight (8) zones for future testing and stimulation operations. 6 refs., 48 figs., 10 tabs.

  19. Application of Multi-rate Flowing Fluid Electric ConductivityLogging Method to Well DH-2, Tono Site, Japan

    SciTech Connect (OSTI)

    Doughty, Christine; Takeuchi, Shinji; Amano, Kenji; Shimo, Michito; Tsang, Chin-Fu

    2004-10-04T23:59:59.000Z

    The flowing fluid electric conductivity (FEC) logging method, wellbore fluid is replaced with de-ionized water, following which FEC profiles in the wellbore are measured at a series of times while the well is pumped at a constant rate. Locations were fluid enters the wellbore show peaks in the FEC logs, which may be analyzed to infer inflow strengths and salinities of permeable features intersected by the wellbore. In multi-rate flowing FEC logging, the flowing FEC logging method is repeated using two or more pumping rates, which enables the transmissivities and inherent pressure heads of these features to be estimated as well. We perform multi-rate FEC logging on a deep borehole in fractured granitic rock, using three different pumping rates. Results identify 19 hydraulically conducting fractures and indicate that transmissivity, pressure head, and salinity vary significantly among them. By using three pumping rates rather than the minimum number of two, we obtain an internal consistency check on the analysis that provides a measure of the uncertainty of the results. Good comparisons against static FEC profiles and against independent chemical, geological, and hydrogeological data have further enhanced confidence in the results of the multi-rate flowing FEC logging method.

  20. Determination of Transport Properties From Flowing Fluid Temperature LoggingIn Unsaturated Fractured Rocks: Theory And Semi-Analytical Solution

    SciTech Connect (OSTI)

    Mukhopadhyay, Sumit; Tsang, Yvonne W.

    2008-08-01T23:59:59.000Z

    Flowing fluid temperature logging (FFTL) has been recently proposed as a method to locate flowing fractures. We argue that FFTL, backed up by data from high-precision distributed temperature sensors, can be a useful tool in locating flowing fractures and in estimating the transport properties of unsaturated fractured rocks. We have developed the theoretical background needed to analyze data from FFTL. In this paper, we present a simplified conceptualization of FFTL in unsaturated fractured rock, and develop a semianalytical solution for spatial and temporal variations of pressure and temperature inside a borehole in response to an applied perturbation (pumping of air from the borehole). We compare the semi-analytical solution with predictions from the TOUGH2 numerical simulator. Based on the semi-analytical solution, we propose a method to estimate the permeability of the fracture continuum surrounding the borehole. Using this proposed method, we estimated the effective fracture continuum permeability of the unsaturated rock hosting the Drift Scale Test (DST) at Yucca Mountain, Nevada. Our estimate compares well with previous independent estimates for fracture permeability of the DST host rock. The conceptual model of FFTL presented in this paper is based on the assumptions of single-phase flow, convection-only heat transfer, and negligible change in system state of the rock formation. In a sequel paper [Mukhopadhyay et al., 2008], we extend the conceptual model to evaluate some of these assumptions. We also perform inverse modeling of FFTL data to estimate, in addition to permeability, other transport parameters (such as porosity and thermal conductivity) of unsaturated fractured rocks.

  1. Variation in physical rock properties determined from sonic logs at a South Texas lignite mine

    E-Print Network [OSTI]

    Cato, Kerry Don

    1985-01-01T23:59:59.000Z

    or underburden units which were identified as potential problem units. S1gn1ficance of Study In the planning and design of a Gulf Coast lignite mi ne, a need exists to deter nine the variability of phys1cal rock properties within strati graphic units...VARIATION IN PHVSICAL ROCK PROPERTIES DETERMINED FROM SONIC LOGS AT A SOUTH TEXAS LIGNITE MINE A Thesis by KERRV OON CATO Submitted to the Graduate College of Texas A&M University in Partial fulfillment of the requirements for the degree...

  2. Catalog of borehole lithologic logs from the 600 Area, Hanford Site

    SciTech Connect (OSTI)

    Fecht, K R; Lillie, J T

    1982-03-01T23:59:59.000Z

    Rockwell Hanford Operations (Rockwell) geoscientists are studying the Hanford Site subsurface environment to assure safe management operations, disposal, and storage of radioactive waste. As part of this effort, geoscientists have collected geotechnical data from about 3000 boreholes drilled on the Hanford Site since the early 1900s. These boreholes have been used for subsurface geologic, hydrologic, and engineering investigation, water supply, ground-water monitoring, and natural gas production. This report is a catalog of all obtainable (about 800) lithologic logs from boreholes in a portion of the Hanford Site known as the 600 Area.

  3. Gamma Log At Alum Area (Moos & Ronne, 2010) | 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 directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At Alum

  4. Gamma Log At Silver Peak 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 being directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At

  5. Resistivity Log At Fish Lake Valley Area (DOE GTP) | 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 YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish Lake

  6. Resistivity Log At The Needles 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 YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish689880

  7. Resistivity Log At Valles Caldera - Sulphur Springs Geothermal Area (Wilt &

    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 Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log AtHaar, 1986)

  8. Electric Micro Imager Log At Coso Geothermal Area (2003) | 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 directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open JumpEcologyElInformation Imager Log At Coso

  9. Comprehensive inverse modeling for the study of carrier transport models in sub-50nm MOSFETs

    E-Print Network [OSTI]

    Djomehri, Ihsan Jahed, 1976-

    2002-01-01T23:59:59.000Z

    Direct quantitative 2-D characterization of sub-50 nm MOSFETs continues to be elusive. This research develops a comprehensive indirect inverse modeling technique for extracting 2-D device topology using combined log(I)-V ...

  10. IMPROVED V I log(gf) VALUES AND ABUNDANCE DETERMINATIONS IN THE PHOTOSPHERES OF THE SUN AND METAL-POOR STAR HD 84937

    SciTech Connect (OSTI)

    Lawler, J. E.; Wood, M. P.; Den Hartog, E. A.; Feigenson, T. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Sneden, C. [Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712 (United States); Cowan, J. J., E-mail: jelawler@wisc.edu, E-mail: mpwood@wisc.edu, E-mail: eadenhar@wisc.edu, E-mail: tfeigenson@wisc.edu, E-mail: chris@verdi.as.utexas.edu, E-mail: cowan@nhn.ou.edu [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019 (United States)

    2015-01-01T23:59:59.000Z

    New emission branching fraction measurements for 836 lines of the first spectrum of vanadium (V I) are determined from hollow cathode lamp spectra recorded with the National Solar Observatory 1 m Fourier transform spectrometer (FTS) and a high-resolution echelle spectrometer. The branching fractions are combined with recently published radiative lifetimes from laser-induced fluorescence measurements to determine accurate absolute atomic transition probabilities for the 836 lines. The FTS data are also used to extract new hyperfine structure A coefficients for 26 levels of neutral vanadium. These new laboratory data are applied to determine the V abundance in the Sun and metal-poor star HD 84937, yielding log ?(V) = 3.956 ± 0.004 (? = 0.037) based on 93 V I lines and log ?(V) = 1.89 ± 0.03 (? = 0.07) based on nine V I lines, respectively, using the Holweger-Müller 1D model. These new V I abundance values for the Sun and HD 84937 agree well with our earlier determinations based upon V II.

  11. Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation

    SciTech Connect (OSTI)

    Bond, Leonard J.; Denslow, Kayte M.; Griffin, Jeffrey W.; Dale, Gregory E.; Harris, Robert V.; Moran, Traci L.; Sheen, David M.; Schenkel, Thomas

    2010-11-01T23:59:59.000Z

    This report presents an initial review of the state-of-the-art nuclear and non-nuclear well logging methods and seeks to understand the technical and economic issues if AmBe, and potentially other isotope sources, are reduced or even eliminated in the oil-field services industry. Prior to considering alternative logging technologies, there is a definite need to open up discussions with industry regarding the feasibility and acceptability of source replacement. Industry views appear to range from those who see AmBe as vital and irreplaceable to those who believe that, with research and investment, it may be possible to transition to electronic neutron sources and employ combinations of non-nuclear technologies to acquire the desired petro-physical parameters. In one sense, the simple answer to the question as to whether petro-physical parameters can be sensed with technologies other than AmBe is probably "Yes". The challenges come when attention turns to record interpretation. The many decades of existing records form a very valuable proprietary resource, and the interpretation of subtle features contained in these records are of significant value to the oil-gas exploration community to correctly characterize a well. The demonstration of equivalence and correspondence/correlation between established and any new sensing modality, and correlations with historic records is critical to ensuring accurate data interpretation. Establishing the technical basis for such a demonstration represents a significant effort.

  12. Statistical quality control for volumetric modulated arc therapy (VMAT) delivery using machine log data

    E-Print Network [OSTI]

    Cheong, Kwang-Ho; Kang, Sei-Kwon; Yoon, Jai-Woong; Park, Soah; Hwang, Taejin; Kim, Haeyoung; Kim, Kyoung Ju; Han, Tae Jin; Bae, Hoonsik

    2015-01-01T23:59:59.000Z

    The aim of this study is to set up statistical quality control for monitoring of volumetric modulated arc therapy (VMAT) delivery error using machine log data. Eclipse and Clinac iX linac with the RapidArc system (Varian Medical Systems, Palo Alto, USA) is used for delivery of the VMAT plan. During the delivery of the RapidArc fields, the machine determines the delivered motor units (MUs) and gantry angle position accuracy and the standard deviations of MU (sigma_MU; dosimetric error) and gantry angle (sigma_GA; geometric error) are displayed on the console monitor after completion of the RapidArc delivery. In the present study, first, the log data was analyzed to confirm its validity and usability; then, statistical process control (SPC) was applied to monitor the sigma_MU and sigma_GA in a timely manner for all RapidArc fields: a total of 195 arc fields for 99 patients. The sigma_MU and sigma_GA were determined twice for all fields, that is, first during the patient-specific plan QA and then again during th...

  13. Coal log pipeline research at the University of Missouri. 4th Quarterly report for 1994, October 1, 1994--December 31, 1994

    SciTech Connect (OSTI)

    Liu, H.; Wilson, J.W.

    1995-06-01T23:59:59.000Z

    Several factors involved in coal log fabrication, storage and handling, such as curing time, aspect ratio and particle size distribution, were evaluated during the fourth quarter of 1994. When Orimulsion is used for coal log fabrication, a certain period of time is required to build up the strength of coal log. From the test results obtained, the longer the curing period the greater the wear resistance of the coal log. From previous studies, the coal log length to diameter ratio (aspect) was found to be an important factor affecting coal log performance during the pipeline degradation test. From the 2 inches pipeline degradation test results, coal logs with aspect ratios ranging from 1.6 to 2.2 traveled in a more stable manner, and had lower weight loss than coal logs with aspect ratios less than 1.6. The influence of particle size on the performance of a coal log was evaluated to determine the optimum particle size for coal log fabrication, based on practical and economical considerations.

  14. 1. c) For all five types, the distribution is quite symmetric. Hearthlog typically burns the longest, with a mean of about 2:40. Wax Logs and Duraflame have a mean about 10 minutes lower. Hot

    E-Print Network [OSTI]

    Preston, Scott

    the longest, with a mean of about 2:40. Wax Logs and Duraflame have a mean about 10 minutes lower. Hot Logs:15. For all but Wax Logs, the distributions have similar variability ­ each has a standard deviation around 9 minutes. Wax Logs burn more consistently near the mean time ­ the standard deviation is just over 5

  15. Drilling, logging, and testing information from borehole UE-25 UZ{number_sign}16, Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Thamir, F.; Thordarson, W.; Kume, J.; Rousseau, J. [Geological Survey, Denver, CO (United States). Yucca Mountain Project Branch; Long, R. [Dept. of Energy, Las Vegas, NV (United States); Cunningham, D.M. Jr. [Science Applications International Corp., Las Vegas, NV (United States)

    1998-09-01T23:59:59.000Z

    Borehole UE-25 UZ{number_sign}16 is the first of two boreholes that may be used to determine the subsurface structure at Yucca Mountain by using vertical seismic profiling. This report contains information collected while this borehole was being drilled, logged, and tested from May 27, 1992, to April 22, 1994. It does not contain the vertical seismic profiling data. This report is intended to be used as: (1) a reference for drilling similar boreholes in the same area, (2) a data source on this borehole, and (3) a reference for other information that is available from this borehole. The reference information includes drilling chronology, equipment, parameters, coring methods, penetration rates, completion information, drilling problems, and corrective actions. The data sources include lithology, fracture logs, a list of available borehole logs, and depths at which water was recorded. Other information is listed in an appendix that includes studies done after April 22, 1994.

  16. Basalt features observed in outcrops, cores, borehole video imagery and geophysical logs, and basalt hydrogeologic study at the Idaho National Engineering Laboratory, Eastern Idaho

    SciTech Connect (OSTI)

    Bennecke, W.M.

    1996-10-01T23:59:59.000Z

    A study was undertaken to examine permeable zones identified in boreholes open to the underlying basalt and to describe the vertical cross flows present in the boreholes. To understand the permeable zones in the boreholes detailed descriptions and measurements of three outcrops in the Snake River Plain, three cores at the Idaho Chemical Processing Plant (ICPP) at the INEL, and over fifty borehole TV logs from the INEL were carried out. Based on the observations made on the three outcrops an idealized basalt lava flow model was generated that used a set of nomenclature that would be standard for the basalt lava flows studied. An upper vesicular zone, a sometimes absent columnar zone, central zone, and lower vesicular zone make up the basalt lava flow model. The overall distinction between the different zones are based on the vesicle shape size, vesicularity, and fractures present. The results of the studies also indicated that the basalt lava flows at the INEL are distal to medial facies pahoehoe lava flows with close fitting contacts. The most permeable zones identified in these basalts are fractured vesiculated portions of the top of the lava flow, the columnar areas, and basalt-flow contacts in order of importance. This was determined from impeller flowmeter logging at the INEL. Having this information a detailed stratigraphy of individual basalt lava flows and the corresponding permeable units were generated. From this it was concluded that groundwater flow at the ICPP prefers to travel along thin basalt lava flows or flow-units. Flow direction and velocity of intrawell flows detected by flowmeter is controlled by a nearby pumping well.

  17. ORIGINAL ARTICLE An in vitro model for the growth and analysis of chronic

    E-Print Network [OSTI]

    Parker, Albert E.

    : Using the C/ DFR model, biofilms were grown on the top of polycarbonate filter membranes inoculated was conducted. The Dakins solution in both models produced statistically significantly higher log reductions

  18. How To Complete Export Control Training 1. Log into CITI, then you'll be brought to your main menu.

    E-Print Network [OSTI]

    Alpay, S. Pamir

    How To Complete Export Control Training 1. Log into CITI, then you'll be brought to your main menu To Complete Export Control Training 2. Scroll towards the bottom of the page to CITI Course Enrollment questions to question 4: Question 4 US Export Control Regulations Please make your selection below

  19. NASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up

    E-Print Network [OSTI]

    Arizona, University of

    overhead to provide a birds-eye view of mountain ranges, lakes and canyons. On the ground, a rover or lakeNASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up News & Features News Topics Shuttle & Station Moon & Mars Solar System Sun-Earth System

  20. A NOVEL APPROACH TO SOFT-MASK ESTIMATION AND LOG-SPECTRAL ENHANCEMENT FOR ROBUST SPEECH RECOGNITION

    E-Print Network [OSTI]

    Alwan, Abeer

    A NOVEL APPROACH TO SOFT-MASK ESTIMATION AND LOG-SPECTRAL ENHANCEMENT FOR ROBUST SPEECH RECOGNITION-- Speech Recognition, Feature Extraction, Speech Enhancement, Mask Estimation, Median Filtering. 1 enhancement. Reliable SPPs provide clues about the spectro-temporal location of speech and are thus a highly

  1. Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case 4 -- France Mohamed.Kaaniche@laas.fr Abstract This paper presents a measurement-based availability, downtimes and availability based on the identification of failures that caused total service loss. Data

  2. Functional structure of ant and termite assemblages in old growth forest, logged forest and oil palm plantation in Malaysian Borneo

    E-Print Network [OSTI]

    Luke, Sarah H.; Fayle, Tom M.; Eggleton, Paul; Turner, Edgar C.; Davies, Richard G.

    2014-07-30T23:59:59.000Z

    ORI GIN AL PA PER Functional structure of ant and termite assemblages in old growth forest, logged forest and oil palm plantation in Malaysian Borneo Sarah H. Luke • Tom M. Fayle • Paul Eggleton • Edgar C. Turner • Richard G. Davies Received: 25...

  3. Towards a systematic analysis of cluster computing log data: the case of IBM BlueGene/Q

    E-Print Network [OSTI]

    Towards a systematic analysis of cluster computing log data: the case of IBM BlueGene/Q Alina S^irbu, Ozalp Babaoglu Department of Computer Science and Engineering, University of Bologna Mura Anteo Zamboni and complexity of managing large comput- ing infrastructures has been on the rise. Automating management actions

  4. The thermal maturation degree of organic matter from source rocks revealed by wells logs including examples from Murzuk Basin, Libya

    SciTech Connect (OSTI)

    Negoita, V.; Gheorghe, A.

    1995-08-01T23:59:59.000Z

    The customary technique used to know the organic matter quantity per rock volume it as well as the organic matter maturation stage is based on geochemical analyses accomplished on a preselected number of samples and cuttings drawn from boreholes during the drilling period. But the same objectives can be approached without any extra cost using the continuous measurements of well logs recorded in each well from the ground surface to the total depth. During the diagenetic stage, the identification of potential source rocks out of which no hydrocarbon have been generated may be carried out using a well logging suite including Gamma Ray Spectrometry, the Compensated Neutron/Litho Density combination and a Dual Induction/Sonic Log. During the catagenetic stage the onset of oil generation brings some important changes in the organic matter structure as well as in the fluid distribution throughout the pore space of source rocks. The replacement of electric conductive water by electric non-conductive hydrocarbons, together with water and oil being expelled from source rocks represent a process of different intensities dependent of time/temperature geohistory and kerogen type. The different generation and expulsion scenarios of hydrocarbons taking place during the catagenetic and metagenetic stages of source rocks are very well revealed by Induction and Laterolog investigations. Several crossplots relating vitrinite reflectance, total organic carbon and log-derived physical parameters are illustrated and discussed. The field applications are coming from Murzuk Basin, where Rompetrol of Libya is operating.

  5. Command Line Arguments Log into your Unix account and create a directory called csc2405 in your home directory.

    E-Print Network [OSTI]

    Command Line Arguments Log into your Unix account and create a directory called csc2405 in your. Complete the three exercises below, making sure you understand the use of command line arguments in your program. Exercise 1 C, C++ and Java allow you to input values into your program through the command line

  6. 2004 Indian River Lease Area, Indian River County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  7. Annual Logging Symposium, June 21-24, 2009 Wireline and While-Drilling Formation-Tester Sampling with Oval, Focused,

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    . Extending the existing wireline technology requires a new pumping system capable of removing invasion fluidsSPWLA 50th Annual Logging Symposium, June 21-24, 2009 1 Wireline and While-Drilling Formation about the potential of developing new fluid sampling methods with probe-type formation testers has

  8. Annual Logging Symposium, June 19-23, 2010 Formation Evaluation in the Bakken Complex Using Laboratory Core Data

    E-Print Network [OSTI]

    reservoirs, such as the Bakken Shale and its adjoining formations, the Three Forks dolomite, Sanish mudstone Using Laboratory Core Data and Advanced Logging Technologies Sandeep Ramakrishna, Ron Balliet, Danny and Lower Bakken Shales are organic rich source rocks. Hydrocarbon fluid identification, volumes

  9. Effect of differential subsidence in growth-faulted regions on E-log patterns and preservation potential

    SciTech Connect (OSTI)

    Edwards, M.B.

    1985-02-01T23:59:59.000Z

    Detailed electric log correlation, supplemented by cores, in the Eocene Wilcox Group and the Oligocene Frio Formation of the Texas Gulf basin contradicts a commonly held notion that changes in log character across growth faults exclusively reflect changes in environment. An invariable consequence of growth faulting is thickening of a depositional unit in the downthrown block, reflecting a greater subsidence rate. The growth ratio (downthrown or upthrown) varies from just over 1:1 to as much as 10:1. Analysis and mapping of log character indicate that the basic unit of both deposition and physical correlation is regressive coarsening-upward sequences. In Wilcox deltas, prodelta shales pass up into delta-front sandstones while in Frio barrier-bar or standplains, shelf and lower-shoreface deposits pass up into upper-shoreface sandstones. Regressive packages grade downdip in environment from delta plain and bay or lagoon to offshore marine. Growth faults had no significant surface expression and did not separate contrasting environments. A marked change in log character (e.g., from smooth to serrated) across a growth fault in a regressive shoreface sequence appears to indicate that the subsidence rate of the downthrown block exceeded a threshold value, enabling preservation of low-energy muddy layers and possibly episodic waning-flow storm deposits that were largely destroyed by fair-weather wave reworking on the upthrown block. This concept has implications both to regional stratigraphy and reservoir properties. Correlative units can abruptly change log character across growth faults, impeding correlation. Sandstones in the downthrown block may contain shale barriers to vertical fluid flow if the threshold subsidence rate was exceeded.

  10. Illegal Logging Gives EU Massive Eco-Headache With tropical rainforests continuing to disappear at an alarming rate, the EU is partially to

    E-Print Network [OSTI]

    17.04.2008 Illegal Logging Gives EU Massive Eco-Headache With tropical rainforests continuing. The problem of illegal logging is particularly acute in Indonesia, allegedly the world's third largest gases and global warming, rising demand for palm oil has resulted in local companies burning woods

  11. Interpretation of Flow Logs from Nevada Test Site Boreholes to Estimate Hydraulic conductivity Using Numerical Simulations Constrained by Single-Well Aquifer Tests

    SciTech Connect (OSTI)

    Garcia, C. Amanda; Halford, Keith J.; Laczniak, Randell J.

    2010-02-12T23:59:59.000Z

    Hydraulic conductivities of volcanic and carbonate lithologic units at the Nevada Test Site were estimated from flow logs and aquifer-test data. Borehole flow and drawdown were integrated and interpreted using a radial, axisymmetric flow model, AnalyzeHOLE. This integrated approach is used because complex well completions and heterogeneous aquifers and confining units produce vertical flow in the annular space and aquifers adjacent to the wellbore. AnalyzeHOLE simulates vertical flow, in addition to horizontal flow, which accounts for converging flow toward screen ends and diverging flow toward transmissive intervals. Simulated aquifers and confining units uniformly are subdivided by depth into intervals in which the hydraulic conductivity is estimated with the Parameter ESTimation (PEST) software. Between 50 and 150 hydraulic-conductivity parameters were estimated by minimizing weighted differences between simulated and measured flow and drawdown. Transmissivity estimates from single-well or multiple-well aquifer tests were used to constrain estimates of hydraulic conductivity. The distribution of hydraulic conductivity within each lithology had a minimum variance because estimates were constrained with Tikhonov regularization. AnalyzeHOLE simulated hydraulic-conductivity estimates for lithologic units across screened and cased intervals are as much as 100 times less than those estimated using proportional flow-log analyses applied across screened intervals only. Smaller estimates of hydraulic conductivity for individual lithologic units are simulated because sections of the unit behind cased intervals of the wellbore are not assumed to be impermeable, and therefore, can contribute flow to the wellbore. Simulated hydraulic-conductivity estimates vary by more than three orders of magnitude across a lithologic unit, indicating a high degree of heterogeneity in volcanic and carbonate-rock units. The higher water transmitting potential of carbonate-rock units relative to volcanic-rock units is exemplified by the large difference in their estimated maximum hydraulic conductivity; 4,000 and 400 feet per day, respectively. Simulated minimum estimates of hydraulic conductivity are inexact and represent the lower detection limit of the method. Minimum thicknesses of lithologic intervals also were defined for comparing AnalyzeHOLE results to hydraulic properties in regional ground-water flow models.

  12. Correlations to determine in-situ stress from open-hole logging data in sandstone reservoirs

    E-Print Network [OSTI]

    Gongora, Cesar Augusto

    1995-01-01T23:59:59.000Z

    stress determination in the Travis Peak Formation, (2) the effect of shale has been considered in the correlation model, and (3) the model is easy to use once the lithology of the layer has been identified. This new model can be used to estimate in-situ...

  13. Correlations to determine in-situ stress from open-hole logging data in sandstone reservoirs 

    E-Print Network [OSTI]

    Gongora, Cesar Augusto

    1995-01-01T23:59:59.000Z

    -situ stress determination in the Travis Peak Formation, (2) the effect of shale has been considered in the correlation model, and (3) the model is easy to use once the lithology of the layer has been identified. This new model can be used to estimate in...

  14. LogTool: A Flexible, Publicly Available Data Analysis Tool Providing Graphical Analysis, Extraction of Data Subsets and Daytyping for Multiple Data Formats

    E-Print Network [OSTI]

    Qualmann, R. L.; Goudge, P.; Baker, M.

    2007-01-01T23:59:59.000Z

    data collected for use in the AIRMaster+ compressed air simulation software. LogTool v1 was an application comprising Excel VBA modules and Visual Basic 6.0 modules. It stored logger data in hidden Excel worksheets. LogTool v2 is written... and flexible process as described below. Getting Started When LogTool is initiated, a ?splash? screen will appear providing the version and a brief description of the software. Click ?Continue? to open a blank main screen as shown in Figure 1. The ?Help...

  15. Factored Language Models for Statistical Machine Translation

    E-Print Network [OSTI]

    Koehn, Philipp

    Factored Language Models for Statistical Machine Translation Amittai E. Axelrod TH E U N I V E R . . . . . . . . . . . . . . . . . . . . . 10 2.4.3 Log-Linear, Phrase-Based Translation Models . . . . . . . . . 11 3 Statistical Language S ITY OF E D I N B U R G H Master of Science by Research Institute for Communicating and Collaborative

  16. Performance of Assisted History Matching Techniques When Utilizing Multiple Initial Geologic Models

    E-Print Network [OSTI]

    Aggarwal, Akshay

    2011-11-15T23:59:59.000Z

    the geological information, and performed petrophysical log evaluation along with well test data calibration. The ensemble of static models obtained was carried through the AHM methodology. I used sensitivity analysis to determine the most important dynamic...

  17. Efficient Distributed Topic Modeling with Provable Guarantees Weicong Ding Mohammad H. Rohban Prakash Ishwar Venkatesh Saligrama

    E-Print Network [OSTI]

    Kaski, Samuel

    of size W among L servers. As is now common (Blei, 2012) we view each document as a collection of N i Dirichlet Allocation (LDA) (Blei et al., 2003) and Log-normal in Correlated Topic Model (Blei and Lafferty

  18. State-Of-The-Art in Permeability Determination From Well Log Data: Part 1-A Comparative Study, Model Development

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    and close-to-reality "image" of spatial distribution of rock properties. Among these, the most difficult area or new field. The main drawback of this method is that the distribution of the predicted values the network recog- nizes the pattern of permeability distribution and "adapts" itself in order to be able

  19. Event Detection using Log-Linear Models for Coronary Contrast Agent Dierck Matern, Alexandru Paul Condurache and Alfred Mertins

    E-Print Network [OSTI]

    Lübeck, Universität zu

    injections during Percutaneous Transluminal Coro- nary Angioplasty that is performed to treat the coronary, in Percutaneous Transluminal Coronary Angioplasty (PTCA), cardiac X-ray image sequences are used in the treatment of the coronary heart diseases. During the intervention, a contrast agent is injected into the vessels to make

  20. Vegetation History And Logging Disturbance: Effects On Rain Forest In The Lope Reserve, Gabon (With Special Emphasis On Elephants and Apes) 

    E-Print Network [OSTI]

    White, Lee JT

    An investigation of the effects of commercial mechanised selective logging on rain forest vegetation and mammals, was undertaken in the Lope Reserve, central Gabon, between January 1989 to July 1991. Vegetation in Lope ...

  1. Join Binghamton University's new walking program! Register and log your steps online using the American Heart Association's Activity Tracker. Join the

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Join Binghamton University's new walking program! Register and log your email address will be your unique identifier · Under "Company" ­ click "search for company" and type in Binghamton University, hit select · Complete personal

  2. Quantifying the Permeability Heterogeneity of Sandstone Reservoirs in Boonsville Field, Texas by Integrating Core, Well Log and 3D Seismic Data

    E-Print Network [OSTI]

    Song, Qian

    2013-04-29T23:59:59.000Z

    the permeability heterogeneity of the target reservoir by integrating core, well log and 3D seismic data. A set of permeability coefficients, variation coefficient, dart coefficient, and contrast coefficient, was defined in this study to quantitatively identify...

  3. Simulation of eccentricity effects on short-and long-normal logging measurements using a Fourier-hp-finite-element method*

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1 Korea Institute of Geoscience and Mineral Resources (KIGAM), Gwahang-no 92, Yuseong-gu, Daejeon matter of primary concern due to global warming. The main limitations of resistivity logging are due

  4. Overpressure prediction by mean total stress estimate using well logs for compressional environments with strike-slip or reverse faulting stress state

    E-Print Network [OSTI]

    Ozkale, Aslihan

    2007-04-25T23:59:59.000Z

    OVERPRESSURE PREDICTION BY MEAN TOTAL STRESS ESTIMATE USING WELL LOGS FOR COMPRESSIONAL ENVIRONMENTS WITH STRIKE-SLIP OR REVERSE FAULTING STRESS STATE A Thesis by ASLIHAN OZKALE Submitted to the Office of Graduate Studies... of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2006 Major Subject: Petroleum Engineering OVERPRESSURE PREDICTION BY MEAN TOTAL STRESS ESTIMATE USING WELL LOGS...

  5. Annual Logging Symposium, June 22-26, 2013 FAST ESTIMATION OF PERMEABILITY FROM FORMATION-TESTER

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    wells in complex reservoirs. In this study, synthetic reservoir models are constructed based-dimensional numerical calculations in the FDM. However, forward modeling of synthetic measurements indicates up to 5% difference between FDSM and FDM in water saturation distribution results. In high-angle wells, mud

  6. Identification and Characterization of Hydrogeologic Units at the Nevada Test Site Using Geophysical Logs: Examples from the Underground Test Area Project

    SciTech Connect (OSTI)

    Lance Prothro, Sigmund Drellack, Margaret Townsend

    2009-03-25T23:59:59.000Z

    The diverse and complex geology of the Nevada Test Site region makes for a challenging environment for identifying and characterizing hydrogeologic units penetrated by wells drilled for the U.S. Department of Energy, National Nuclear Security Administration, Underground Test Area (UGTA) Environmental Restoration Sub-Project. Fortunately, UGTA geoscientists have access to large and robust sets of subsurface geologic data, as well as a large historical knowledge base of subsurface geological analyses acquired mainly during the underground nuclear weapons testing program. Of particular importance to the accurate identification and characterization of hydrogeologic units in UGTA boreholes are the data and interpretation principles associated with geophysical well logs. Although most UGTA participants and stakeholders are probably familiar with drill hole data such as drill core and cuttings, they may be less familiar with the use of geophysical logs; this document is meant to serve as a primer on the use of geophysical logs in the UGTA project. Standard geophysical logging tools used in the UGTA project to identify and characterize hydrogeologic units are described, and basic interpretation principles and techniques are explained. Numerous examples of geophysical log data from a variety of hydrogeologic units encountered in UGTA wells are presented to highlight the use and value of geophysical logs in the accurate hydrogeologic characterization of UGTA wells.

  7. Summary Report of Geophysical Logging For The Seismic Boreholes Project at the Hanford Site Waste Treatment Plant.

    SciTech Connect (OSTI)

    Gardner, Martin G.; Price, Randall K.

    2007-02-01T23:59:59.000Z

    During the period of June through October 2006, three deep boreholes and one corehole were drilled beneath the site of the Waste Treatment Plant (WTP) at the U.S. Department of Energy (DOE) Hanford Site near Richland, Washington. The boreholes were drilled to provide information on ground-motion attenuation in the basalt and interbedded sediments underlying the WTP site. This report describes the geophysical logging of the deep boreholes that was conducted in support of the Seismic Boreholes Project, defined below. The detailed drilling and geological descriptions of the boreholes and seismic data collected and analysis of that data are reported elsewhere.

  8. Uncertainty Analysis in Upscaling Well Log data By Markov Chain Monte Carlo Method

    E-Print Network [OSTI]

    Hwang, Kyubum

    2010-01-16T23:59:59.000Z

    the uncertainties, a Bayesian framework could be a useful tool for providing the posterior information to give a better estimate for a chosen model with a conditional probability. In addition, the likelihood of a Bayesian framework plays an important role...

  9. Impact of assumption of log-normal distribution on monthly rainfall estimation from TMI

    E-Print Network [OSTI]

    Lee, Dong Heon

    2001-01-01T23:59:59.000Z

    of the raining atmosphere in order to predict brightness temperature for a given rainfall rate. This method was first explored by Wilheit et al. (1977), who developed a theoretical model for quantitatively relating the microwave radiance to rain rate over... the oceans. Wu and Weinman (1984) developed a microwave radiative transfer model of the radiance emitted by precipitating clouds containing ice, combined ice, and water hydrometeors. They found that intense storms produced ice-scattering signatures...

  10. Development and demonstration of an enhanced spreadsheet-based well log analysis software. Final report, May 1998

    SciTech Connect (OSTI)

    Watney, W.L.; Doveton, J.H.; Guy, W.J.

    1998-10-01T23:59:59.000Z

    The Advanced Class Work Program is a field-based research and demonstration program for demonstration of advanced or improved technologies identified in the Department of Energy`s Class Field Demonstration Projects. The objective of the Advanced Class Work program is to conduct field demonstrations of technologies for which a small, incremental amount of work will produce or improve a transferable, useful technology for oil recovery. The goal of the program is to enhance the products of near-term Class projects and maximize the applicability and effectiveness of project results. PfEFFER (Petrofacies Evaluation of Formations For Engineering Reservoirs) is a well log analysis computer package. The software was tested and successfully applied in Schaben Field, a DOE Class 2 Field Demonstration Project to assist in improving reservoir characterization and assessing reservoir performance. PfEFFER v.1 was released in January, 1996 as a commercial spreadsheet-based well-log analysis program developed and distributed through the Kansas Geological Survey. The objectives of this project were: Task 1 -- Enhance the PfEFFER software package; Task 2 -- Develop major new modules to significantly augment PfEFFER capabilities; Task 3 -- Conduct field demonstration of software application using the necessary reservoir data acquired from oil operators and construct a database; and Task 4 -- Perform technology transfer activities that include workshops, reports, presentations, or other methods to communicate results to interested parties.

  11. Consortium for coal log pipeline research and development. Final technical progress report, August 10, 1993--August 9, 1996

    SciTech Connect (OSTI)

    Marrero, T.R.

    1996-10-01T23:59:59.000Z

    The main objective of this project was to conduct intensive research and development of the Coal Log Pipeline (CLP). Specifically, the R & D was to concentrate on previously neglected and insufficiently studied aspects of CLP which were deemed significant. With improvements in these areas, CLP could be implemented for commercial use within five years. CLP technology is capable of transporting coal logs for long distances. The many potential advantages of CLP over truck and railroad transportation include: lower freight costs, less energy consumption, less air pollution, decreased environmental problems, increased safety, and improved reliability. Previous studies have shown that CLP is advantageous over slurry pipeline technology. First, CLP uses one-third the water required by a coal slurry pipeline. Second, CLP provides easier coal dewatering. Third, the CLP conveying capacity of coal is twice as much as a slurry transport line of equal diameter. In many situations, the cost for transporting each ton of coal is expected to be less expensive by CLP as compared to other competing modes of transportation such as: truck, unit train and slurry pipeline.

  12. Page-Differential Logging: An Efficient and DBMS-independent Approach for Storing Data into Flash Memory

    E-Print Network [OSTI]

    Kim, Yi-Reun; Song, Il-Yeol

    2010-01-01T23:59:59.000Z

    Flash memory is widely used as the secondary storage in lightweight computing devices due to its outstanding advantages over magnetic disks. Flash memory has many access characteristics different from those of magnetic disks, and how to take advantage of them is becoming an important research issue. There are two existing approaches to storing data into flash memory: page-based and log-based. The former has good performance for read operations, but poor performance for write operations. In contrast, the latter has good performance for write operations when updates are light, but poor performance for read operations. In this paper, we propose a new method of storing data, called page-differential logging, for flash-based storage systems that solves the drawbacks of the two methods. The primary characteristics of our method are: (1) writing only the difference (which we define as the page-differential) between the original page in flash memory and the up-to-date page in memory; (2) computing and writing the pag...

  13. Evaluating gas content of black warrior basin coalbeds from wireline log data

    SciTech Connect (OSTI)

    Colson, J.L. (Schlumberger Well Services (US))

    1991-07-01T23:59:59.000Z

    This paper reports that coalbeds have long been known to contain natural gas in varying amounts. To the mining industry, this is basically a hazard to be controlled and avoided where possible. To the petroleum industry, it is an exploitable resource that holds significant economic potential because of shallow drilling and the promising of long well life. The variability of coal as a gas reservoir raises the need for oil and gas-well explorers to develop the capability of evaluating coalbed gas content to identify and produce coal gas plays. Current petrophysical models for gas reservoir analysis in traditional clastic or carbonate environments are notable inadequate for evaluation of gas content in coal beds. However, numerous physical models exist for coals throughout the country, primarily from the efforts of the mining industry. A theoretical model was chosen and used to establish a method for evaluating gas content of coalbeds in the Black Warrior basin of Alabama. Core data in the form of proximate analysis, ultimate analysis, and gas desorption measurements were used, along with wireline data, to build the models. Results of data analysis in wells with coals ranging from low-volatile bituminous to high-volatile B bituminous are compared with core gas desorption measurements to demonstrate the accuracy of the process.

  14. Annual Logging Symposium, June 16-20, 2012 SATURATION-HEIGHT AND INVASION CONSISTENT HYDRAULIC

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    clastic and carbonate reservoirs in multi-well contexts. It overcomes the limitation of the bulk volume on pore geometry, which relates to saturation-height modeling at a later stage in reservoir characterization. Additionally, pore geometry affects mud-filtrate invasion under over-balanced drilling conditions

  15. Contact us | Log in For the benefit of society? No, for the good of my family

    E-Print Network [OSTI]

    Gardner, Andy

    created a computer model recreates the transmission of a common infectious agent in a population the parasite population. 'This way, we were able to analyse what happens at the individual, family using the 'tools' menu on the right. Your comments Post a comment There are no comments at this time

  16. High-resolution interpretation of sonic logging measurements using stochastic inversion with spatial slowness sensitivity functions

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    modeling, which significantly reduces computation time. We apply the new method to a synthetic case to mud-filtrate invasion and other radial alterations (Sinha, 1997). We define and calculate sensitivity of successful application of the new approach including both synthetic and field cases. In all cases, we obtain

  17. Introduction to mathematical models and methods

    SciTech Connect (OSTI)

    Siddiqi, A. H.; Manchanda, P. [Gautam Budha University, Gautam Budh Nagar-201310 (India); Department of Mathematics, Guru Nanak Dev University, Amritsar (India)

    2012-07-17T23:59:59.000Z

    Some well known mathematical models in the form of partial differential equations representing real world systems are introduced along with fundamental concepts of Image Processing. Notions such as seismic texture, seismic attributes, core data, well logging, seismic tomography and reservoirs simulation are discussed.

  18. Use of treatment log files in spot scanning proton therapy as part of patient-specific quality assurance

    SciTech Connect (OSTI)

    Li Heng; Sahoo, Narayan; Poenisch, Falk; Suzuki, Kazumichi; Li Yupeng; Li Xiaoqiang; Zhang Xiaodong; Gillin, Michael T.; Zhu, X. Ronald [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States); Lee, Andrew K. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)

    2013-02-15T23:59:59.000Z

    Purpose: The purpose of this work was to assess the monitor unit (MU) values and position accuracy of spot scanning proton beams as recorded by the daily treatment logs of the treatment control system, and furthermore establish the feasibility of using the delivered spot positions and MU values to calculate and evaluate delivered doses to patients. Methods: To validate the accuracy of the recorded spot positions, the authors generated and executed a test treatment plan containing nine spot positions, to which the authors delivered ten MU each. The spot positions were measured with radiographic films and Matrixx 2D ion-chambers array placed at the isocenter plane and compared for displacements from the planned and recorded positions. Treatment logs for 14 patients were then used to determine the spot MU values and position accuracy of the scanning proton beam delivery system. Univariate analysis was used to detect any systematic error or large variation between patients, treatment dates, proton energies, gantry angles, and planned spot positions. The recorded patient spot positions and MU values were then used to replace the spot positions and MU values in the plan, and the treatment planning system was used to calculate the delivered doses to patients. The results were compared with the treatment plan. Results: Within a treatment session, spot positions were reproducible within {+-}0.2 mm. The spot positions measured by film agreed with the planned positions within {+-}1 mm and with the recorded positions within {+-}0.5 mm. The maximum day-to-day variation for any given spot position was within {+-}1 mm. For all 14 patients, with {approx}1 500 000 spots recorded, the total MU accuracy was within 0.1% of the planned MU values, the mean (x, y) spot displacement from the planned value was (-0.03 mm, -0.01 mm), the maximum (x, y) displacement was (1.68 mm, 2.27 mm), and the (x, y) standard deviation was (0.26 mm, 0.42 mm). The maximum dose difference between calculated dose to the patient based on the plan and recorded data was within 2%. Conclusions: The authors have shown that the treatment log file in a spot scanning proton beam delivery system is precise enough to serve as a quality assurance tool to monitor variation in spot position and MU value, as well as the delivered dose uncertainty from the treatment delivery system. The analysis tool developed here could be useful for assessing spot position uncertainty and thus dose uncertainty for any patient receiving spot scanning proton beam therapy.

  19. FMI Log At New River 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 JumpConceptual Model,DOEHazelPennsylvania: EnergyExolis Energy JumpFAC 04-08-DOE GTP) JumpNew River

  20. Core Log Valles Caldera No. 2A, New Mexico | 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, clickInformationNew|Core Analysis At Geysers| Open EnergyAl.,A, New Mexico

  1. Cross-Dipole Acoustic Log At Alum Area (Moos & Ronne, 2010) | 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 JumpConceptual Model, clickInformationNew|CoreCp HoldingsCrofutt'sWyoming:Plains,

  2. Density Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al.,

    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: Energy ResourcesDenair,Dennis Port,1987) | Open

  3. Density Log At Valles Caldera - Redondo Geothermal Area (Wilt & Haar, 1986)

    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: Energy ResourcesDenair,Dennis Port,1987) | Open|

  4. Density Log at Alum Area (Moos & Ronne, 2010) | 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 Facility DatabaseMichigan: Energy ResourcesDenair,Dennis Port,1987) |

  5. Density Log at Fish Lake Valley 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 JumpConceptual Model,DOE Facility DatabaseMichigan: Energy ResourcesDenair,Dennis Port,1987) |Fish

  6. Latent Factor Models for Relational Data Statistics, Biostatistics and

    E-Print Network [OSTI]

    Hoff, Peter

    -sharing activity between i and j Protein-protein interactions A=proteins, yi,j = the interaction between i and j.01.02.0 log-odds ratio -1.0 -0.5 0.0 0.5 1.0 0.00.51.01.52.0 #12;Model lack of fit Neither of these models do

  7. List of Publications (Reverse Chronological Order) Click on the blue publication numbers to access the full text pdfs. You may need to be logged in to your institution web pages

    E-Print Network [OSTI]

    Ojovan, Michael

    the full text pdfs. You may need to be logged in to your institution web pages to access some journal pages

  8. List of Publications (Reverse Chronological Order) Click on the blue publication numbers to access the full text pdfs. You may need to be logged in to your institution web

    E-Print Network [OSTI]

    Ojovan, Michael

    the full text pdfs. You may need to be logged in to your institution web pages to access some journal pages

  9. Fluid-Rock Characterization for NMR Well Logging and Special Core Analysis

    SciTech Connect (OSTI)

    George Hirasaki; Kishore Mohanty

    2007-12-31T23:59:59.000Z

    The overall objective of this effort is to develop, build and test a high-speed drilling motor that can meet the performance guidelines of the announcement, namely: 'The motors are expected to rotate at a minimum of 10,000 rpm, have an OD no larger than 7 inches and work downhole continuously for at least 100 hours. The motor must have common oilfield thread connections capable of making up to a drill bit and bottomhole assembly. The motor must be capable of transmitting drilling fluid through the motor'. To these goals, APS would add that the motor must be economically viable, in terms of both its manufacturing and maintenance costs, and be applicable to as broad a range of markets as possible. APS has taken the approach of using a system using planetary gears to increase the speed of a conventional mud motor to 10,000 rpm. The mud flow is directed around the outside of the gear train, and a unique flow diversion system has been employed. A prototype of the motor was built and tested in APS's high-pressure flow loop. The motor operated per the model up to {approx}4200 rpm. At that point a bearing seized and the performance was severely degraded. The motor is being rebuilt and will be retested outside of this program.

  10. Inversion-based method for interpretation of logging-while-drilling density measurements acquired in high-angle and horizontal wells

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    -mail: wpreeg@austin.rr.com. 4 Schlumberger, Houston, Texas, USA. E-mail: rasmus@sugar-land.oilfield.slb.com. 5 Schlumberger, Nuclear Logging, Sugar Land, Texas, USA. E-mail: radtke@sugar-land.oilfield.slb.com. 6 Chevron ET

  11. School of Electronic, Electrical and Systems Engineering From the first time you log on to our website to when you shake

    E-Print Network [OSTI]

    Birmingham, University of

    School of Electronic, Electrical and Systems Engineering From the first time you log on to our of Electronic, Electrical and Systems Engineering Smart devices, smart solutions... smart people. #12;2 School of Electronic, Electrical and Systems Engineering Welcome I am delighted that you are interested in engineering

  12. HR System Access Request Form Security Administration, Human Resources (HR) For additional instructions and information, log onto http://hr.vanderbilt.edu/security/

    E-Print Network [OSTI]

    Simaan, Nabil

    instructions and information, log onto http://hr.vanderbilt.edu/security/ Home Department VUnet IDHR EmployeeHR System Access Request Form Security Administration, Human Resources (HR) For additional ID Name Email AddressWork Phone Home Dept Name Effective Date of Access Operator Information I

  13. Recognition and delineation of Paleokarst zones by the use of wireline logs in the bitumen-saturated upper Devonian Grosmont formation of Northeastern Alberta, Canada

    SciTech Connect (OSTI)

    Dembicki, E.A.; Machel, H.G. [Univ. of Alberta, Edmonton, Alberta (Canada)

    1996-05-01T23:59:59.000Z

    The Upper Devonian Grosmont Formation in northeastern Alberta, Canada, is a shallow-marine carbonate platform complex that was subaerially exposed for hundreds of millions of years between the Mississippian(?) and Cretaceous. During this lengthy exposure period, an extensive karst system developed that is characterized by an irregular erosional surface, meter-size (several feet) dissolution cavities, collapse breccias, sinkholes, paleosols, and fractures. The karsted Grosmont Formation, which contains giant reserves of bitumen, sub-crops beneath Cretaceous clastic sediments of the giant Athabasca tar sands deposit. The paleokarst in the Grosmont Formation can be recognized on wireline logs in relatively nonargillaceous carbonate intervals (<30 API units on the gamma-ray log) as excursions of the caliper log, off-scale neutron-density porosity readings, and severe cycle skipping of the acoustic log. The paleokarst is more prevalent in the upper units of the Grosmont Formation, and the effects of karstification decrease toward stratigraphically older and deeper units. The paleokarst usually occurs within 35 m (115 ft) of the erosional surface. The reservoir properties of the Grosmont Formation (e.g., thickness, porosity, permeability, and seal effectiveness) are significantly influenced by karstification. Depending upon the location, karstification has either benefited or degraded the reservoir characteristics. Benefits include porosity values greater than 40% (up to 100% in caverns) and permeability values of 30,000 md in severely fractured intervals. Detrimental reservoir characteristics include erosion, porosity and permeability reduction, and seal ineffectiveness.

  14. DARS BATCH QUICK REFERENCE 1. Log on to http://dars.services.wisc.edu using your NetID and password

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    DARS BATCH QUICK REFERENCE 1. Log on to http://dars.services.wisc.edu using your NetID and password. #12;5. You can monitor the status of your request on the DARS Batch Recent Requests Summary page. a. Contact the DARS administrator if the request is pending their approval. b. Click View Requested Reports

  15. Instructions for using Power Scan 2000 1. If you are an authorized University of Memphis user, log in with your UUID and

    E-Print Network [OSTI]

    Memphis, University of

    in with your UUID and password. Once logged in, you can save items to the desktop and then transfer the file, or saved to a removable storage device. To print, guests should click on Go Print. The print job will go Rotate Mirror Straighten #12;To scan an image for printing/saving, drag the green box to frame the page

  16. (Teff,log g,[Fe/H]) Classification of Low-Resolution Stellar Spectra using Artificial Neural Networks

    E-Print Network [OSTI]

    Shawn Snider; Yuan Qu; Carlos Allende Prieto; Ted von Hippel; Timothy C. Beers; Chistopher Sneden; David L. Lambert

    1999-12-19T23:59:59.000Z

    New generation large-aperture telescopes, multi-object spectrographs, and large format detectors are making it possible to acquire very large samples of stellar spectra rapidly. In this context, traditional star-by-star spectroscopic analysis are no longer practical. New tools are required that are capable of extracting quickly and with reasonable accuracy important basic stellar parameters coded in the spectra. Recent analyses of Artificial Neural Networks (ANNs) applied to the classification of astronomical spectra have demonstrated the ability of this concept to derive estimates of temperature and luminosity. We have adapted the back-propagation ANN technique developed by von Hippel et al. (1994) to predict effective temperatures, gravities and overall metallicities from spectra with resolving power ~ 2000 and low signal-to-noise ratio. We show that ANN techniques are very effective in executing a three-parameter (Teff,log g,[Fe/H]) stellar classification. The preliminary results show that the technique is even capable of identifying outliers from the training sample.

  17. abstract.log

    E-Print Network [OSTI]

    (/usr/share/texmf-texlive/tex/latex/base/article.cls Document Class: article ... UCS: Unicode global data ) \\uc@secondtry=\\count87 \\uc@combtoks=\\toks16 ...

  18. openhole_logging.indd

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

    with a 3% KCL Polymer mud system that seems to work well for stabilizing sensitive shale zones. The lower formations are very compact and should be able to stay open without...

  19. manuscript.log

    E-Print Network [OSTI]

    ... irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.

  20. segabs_final.log

    E-Print Network [OSTI]

    ... interlingua, ibycus, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish, portuguese, pinyin, romanian, russian, slovene, uppersorbian, serbian, ...

  1. revised.log

    E-Print Network [OSTI]

    ... irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.

  2. sylab.log

    E-Print Network [OSTI]

    ... latin, mongolian, dutch, norsk, polish, por tuguese, pinyin, romanian, russian, slovenian, uppersorbian, serbian, swedish, turkish, ukenglish, ukrainian, loaded.

  3. Logging in to Franklin

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

    with the following command from any UNIX, Linux, FreeBSD, etc. command shell or terminal: % ssh -l username franklin.nersc.gov There are a number of SSH-capable clients...

  4. Logging in to Edison

    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 Science (SC)Integrated Codes |Is Your HomeLatestCenter

  5. FOIA Log 2012.xlsx

    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. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees The

  6. FOIA Log 2013.xlsx

    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. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees

  7. FOIA Log 2014.xlsx

    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. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees Closed

  8. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for the National Park Service: Fort Vancouver National Historic Site

    SciTech Connect (OSTI)

    Stephen Schey; Jim Francfort

    2014-03-01T23:59:59.000Z

    Battelle Energy Alliance, LLC, managing and operating contractor for the U.S. Department of Energy’s Idaho National Laboratory, is the lead laboratory for the U.S. Department of Energy’s Advanced Vehicle Testing. Battelle Energy Alliance, LLC contracted with Intertek Testing Services, North America (ITSNA) to collect data on federal fleet operations as part of the Advanced Vehicle Testing Activity’s Federal Fleet Vehicle Data Logging and Characterization study. The Advanced Vehicle Testing Activity study seeks to collect data to validate the use of advanced electric drive vehicle transportation. This report focuses on the Fort Vancouver National Historic Site (FVNHS) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of electric vehicles (EVs) into the agencies’ fleet. Individual observations of the selected vehicles provided the basis for recommendations related to EV adoption and whether a battery electric vehicle (BEV) or plug-in hybrid electric vehicle (PHEV) (collectively plug-in electric vehicles) could fulfill the mission requirements. FVNHS identified three vehicles in its fleet for consideration. While the FVNHS vehicles conduct many different missions, only two (i.e., support and pool missions) were selected by agency management to be part of this fleet evaluation. The logged vehicles included a pickup truck and a minivan. This report will show that BEVs and PHEVs are capable of performing the required missions and providing an alternative vehicle for both mission categories, because each has sufficient range for individual trips and time available each day for charging to accommodate multiple trips per day. These charging events could occur at the vehicle’s home base, high-use work areas, or in intermediate areas along routes that the vehicles frequently travel. Replacement of vehicles in the current fleet would result in significant reductions in emission of greenhouse gases and petroleum use, while also reducing fuel costs. The Vancouver, Washington area and neighboring Portland, Oregon are leaders in adoption of PEVs in the United States1. PEV charging stations, or more appropriately identified as electric vehicle supply equipment, located on the FVNHS facility would be a benefit for both FVNHS fleets and general public use. Fleet drivers and park visitors operating privately owned plug-in electric vehicles benefit by using the charging infrastructure. ITSNA recommends location analysis of the FVNHS site to identify the optimal station placement for electric vehicle supply equipment. ITSNA recognizes the support of Idaho National Laboratory and ICF International for their efforts to initiate communication with the National Parks Service and FVNHS for participation in this study. ITSNA is pleased to provide this report and is encouraged by the high interest and support from the National Park Service and FVNHS personnel

  9. Model Selection 5th Penn State Astrostatistics School

    E-Print Network [OSTI]

    Hunter, David

    in this talk. From Blustin et al (ApJ 2006) article on gamma ray bursts. Note bend in blue line; should. Parsimony Here is the gamma ray burst dataset: 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -14-13-12-11-10-9 Log (Time since trigger (s)) Log2-10keVFlux June 2009 Model Selection #12;Fit vs. Parsimony Here is the gamma ray

  10. Analyticity, Convergence and Convergence Rate of Recursive Maximum Likelihood Estimation in Hidden Markov Models

    E-Print Network [OSTI]

    Tadi?, Vladislav B

    2009-01-01T23:59:59.000Z

    This paper considers the asymptotic properties of the recursive maximum likelihood estimation in hidden Markov models. The paper is focused on the asymptotic behavior of the log-likelihood function and on the point-convergence and convergence rate of the recursive maximum likelihood estimator. Using the principle of analytical continuation, the analyticity of the asymptotic log-likelihood function is shown for analytically parameterized hidden Markov models. Relying on this fact and some results from differential geometry (Lojasiewicz inequality), the almost sure point-convergence of the recursive maximum likelihood algorithm is demonstrated, and relatively tight bounds on the convergence rate are derived. As opposed to the existing result on the asymptotic behavior of maximum likelihood estimation in hidden Markov models, the results of this paper are obtained without assuming that the log-likelihood function has an isolated maximum at which the Hessian is strictly negative definite.

  11. Rational production of veneer by IR-heating of green wood during peeling: Modeling experiments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    (0)3 85 59 53 85 E-mail: anna.dupleix@ensam.eu Abstract Heating green wood logs by infrared (IR-line IR heating system installed on the peeling lathe. Keywords: green wood; heating; infrared; modelingRational production of veneer by IR-heating of green wood during peeling: Modeling experiments Anna

  12. Mossbauer Spectra of Ferro uids Characterized Using a Many State Relaxation Model for Superparamagnets

    E-Print Network [OSTI]

    Ryan, Dominic

    Mossbauer Spectra of Ferro uids Characterized Using a Many State Relaxation Model and a log-normal size distribution we are able to #12;t Mossbauer spectra which span temperatures from relaxation rates. With this model, we have #12;tted the Mossbauer spectra of two Fe3O4 ferro uids, from 12 K

  13. On the Storage Capacity of the Hopfield Model with Biased Patterns

    E-Print Network [OSTI]

    Bielefeld, University of

    On the Storage Capacity of the Hopfield Model with Biased Patterns Matthias L¨owe Universit@mathematik.uni­bielefeld.de Keywords: Hopfield model, neural networks, storage capacity, Markov chains, large deviations AMS Subject can store N fl log N or ffN biased patterns (depending on which notion of storage is used

  14. On the Study of NEI Regime in SNR's: Emission Model and ROSAT PSPC Spectral Fitting Simulations

    E-Print Network [OSTI]

    volume of plasma is struck by the blast wave. T e and the density n stay constant during the ionization. This effect is showed in Figure 1, where we plotted Ø 2 contours in the T \\Gamma log ø plane derived from stress that this is a model effect and not an effect of the algorithm or of the model gridding. #12; 3

  15. Harmonic pinnacles in the Discrete Gaussian model

    E-Print Network [OSTI]

    Eyal Lubetzky; Fabio Martinelli; Allan Sly

    2014-05-20T23:59:59.000Z

    The 2D Discrete Gaussian model gives each height function $\\eta : \\mathbb{Z}^2\\to\\mathbb{Z}$ a probability proportional to $\\exp(-\\beta \\mathcal{H}(\\eta))$, where $\\beta$ is the inverse-temperature and $\\mathcal{H}(\\eta) = \\sum_{x\\sim y}(\\eta_x-\\eta_y)^2$ sums over nearest-neighbor bonds. We consider the model at large fixed $\\beta$, where it is flat unlike its continuous analog (the Gaussian Free Field). We first establish that the maximum height in an $L\\times L$ box with 0 boundary conditions concentrates on two integers $M,M+1$ with $M\\sim \\sqrt{(1/2\\pi\\beta)\\log L\\log\\log L}$. The key is a large deviation estimate for the height at the origin in $\\mathbb{Z}^2$, dominated by "harmonic pinnacles", integer approximations of a harmonic variational problem. Second, in this model conditioned on $\\eta\\geq 0$ (a floor), the average height rises, and in fact the height of almost all sites concentrates on levels $H,H+1$ where $H\\sim M/\\sqrt{2}$. This in particular pins down the asymptotics, and corrects the order, in results of Bricmont, El-Mellouki and Fr\\"ohlich (1986), where it was argued that the maximum and the height of the surface above a floor are both of order $\\sqrt{\\log L}$. Finally, our methods extend to other classical surface models (e.g., restricted SOS), featuring connections to $p$-harmonic analysis and alternating sign matrices.

  16. Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Deliverable 2.5.4, Ferron Sandstone lithologic strip logs, Emergy & Sevier Counties, Utah: Volume I

    SciTech Connect (OSTI)

    Allison, M.L.

    1995-12-08T23:59:59.000Z

    Strip logs for 491 wells were produced from a digital subsurface database of lithologic descriptions of the Ferron Sandstone Member of the Mancos Shale. This subsurface database covers wells from the parts of Emery and Sevier Counties in central Utah that occur between Ferron Creek on the north and Last Chance Creek on the south. The lithologic descriptions were imported into a logging software application designed for the display of stratigraphic data. Strip logs were produced at a scale of one inch equals 20 feet. The strip logs were created as part of a study by the Utah Geological Survey to develop a comprehensive, interdisciplinary, and qualitative characterization of a fluvial-deltaic reservoir using the Ferron Sandstone as a surface analogue. The study was funded by the U.S. Department of Energy (DOE) under the Geoscience/Engineering Reservoir Characterization Program.

  17. Remedial Action Plan and Site Design for Stabilization of the Inactive Uranium Mill Tailings Sites at Slick Rock, Colorado: Appendix B to Attachment 3, Lithologic logs and monitor well construction information. Final report

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This volume contains lithology logs and monitor well construction information for: NC processing site; UC processing site; and Burro Canyon disposal site. This information pertains to the ground water hydrology investigations which is attachment 3 of this series of reports.

  18. Field project to obtain pressure core, wireline log, and production test data for evaluation of CO/sub 2/ flooding potential, Conoco MCA unit well No. 358, Maljamar Field, Lea County, New Mexico

    SciTech Connect (OSTI)

    Swift, T.E.; Marlow, R.E.; Wilhelm, M.H.; Goodrich, J.H.; Kumar, R.M.

    1981-11-01T23:59:59.000Z

    This report describes part of the work done to fulfill a contract awarded to Gruy Federal, Inc., by the Department of Energy (DOE) on Feburary 12, 1979. The work includes pressure-coring and associated logging and testing programs to provide data on in-situ oil saturation, porosity and permeability distribution, and other data needed for resource characterization of fields and reservoirs in which CO/sub 2/ injection might have a high probability of success. This report details the second such project. Core porosities agreed well with computed log porosities. Core water saturation and computed log porosities agree fairly well from 3692 to 3712 feet, poorly from 3712 to 3820 feet and in a general way from 4035 to 4107 feet. Computer log analysis techniques incorporating the a, m, and n values obtained from Core Laboratories analysis did not improve the agreement of log versus core derived water saturations. However, both core and log analysis indicated the ninth zone had the highest residual hydrocarbon saturations and production data confirmed the validity of oil saturation determinations. Residual oil saturation, for the perforated and tested intervals were 259 STB/acre-ft for the interval from 4035 to 4055 feet, and 150 STB/acre-ft for the interval from 3692 to 3718 feet. Nine BOPD was produced from the interval 4035 to 4055 feet and no oil was produced from interval 3692 to 3718 feet, qualitatively confirming the relative oil saturations as calculated. The low oil production in the zone from 4022 to 4055 and the lack of production from 3692 to 3718 feet indicated the zone to be at or near residual waterflood conditions as determined by log analysis. This project demonstrates the usefulness of integrating pressure core, log, and production data to realistically evaluate a reservoir for carbon dioxide flood.

  19. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for the National Park Service: Golden Gate National Recreation Area

    SciTech Connect (OSTI)

    Stephen Schey; Jim Francfort

    2014-03-01T23:59:59.000Z

    Battelle Energy Alliance, LLC, managing and operating contractor for the U.S. Department of Energy's Idaho National Laboratory, is the lead laboratory for U.S. Department of Energy Advanced Vehicle Testing. Battelle Energy Alliance, LLC contracted with Intertek Testing Services, North America (ITSNA) to collect data on federal fleet operations as part of the Advanced Vehicle Testing Activity's Federal Fleet Vehicle Data Logging and Characterization study. The Advanced Vehicle Testing Activity study seeks to collect data to validate the utilization of advanced electric drive vehicle transportation. This report focuses on the Golden Gate National Recreation Area (GGNRA) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of plug-in electric vehicles (PEVs) into the agencies' fleets. Individual observations of these selected vehicles provide the basis for recommendations related to electric vehicle adoption and whether a battery electric vehicle or plug-in hybrid electric vehicle (PHEV) (collectively PEVs) can fulfill the mission requirements. GGNRA identified 182 vehicles in its fleet, which are under the management of the U.S. General Services Administration. Fleet vehicle mission categories are defined in Section 4, and while the GGNRA vehicles conduct many different missions, only two (i.e., support and law enforcement missions) were selected by agency management to be part of this fleet evaluation. The selected vehicles included sedans, trucks, and sport-utility vehicles. This report will show that battery electric vehicles and/or PHEVs are capable of performing the required missions and providing an alternative vehicle for support vehicles and PHEVs provide the same for law enforcement, because each has a sufficient range for individual trips and time is available each day for charging to accommodate multiple trips per day. These charging events could occur at the vehicle home base, high-use work areas, or intermediately along routes that the vehicles frequently travel. Replacement of vehicles in the current fleet would result in significant reductions in the emission of greenhouse gases and petroleum use, while also reducing fuel costs. The San Francisco Bay Area is a leader in the adoption of PEVs in the United States. PEV charging stations, or more appropriately identified as electric vehicle supply equipment, located on the GGNRA facility would be a benefit for both GGNRA fleets and general public use. Fleet drivers and park visitors operating privately owned PEVs benefit by using the charging infrastructure. ITSNA recommends location analysis of the GGNRA site to identify the optimal placement of the electric vehicle supply equipment station. ITSNA recognizes the support of Idaho National Laboratory and ICF International for their efforts to initiate communication with the National Parks Service and GGNRA for participation in the study. ITSNA is pleased to provide this report and is encouraged by the high interest and support from the National Park Service and GGNRA personnel.

  20. Application of direct-fitting, mass-integral, and multi-ratemethods to analysis of flowing fluid electric conductivity logs fromHoronobe, Japan

    SciTech Connect (OSTI)

    Doughty, C.; Tsang, C.-F.; Hatanaka, K.; Yabuuchi, S.; Kurikami, H.

    2007-08-01T23:59:59.000Z

    The flowing fluid electric conductivity (FFEC) loggingmethod is an efficient way to provide information on the depths,salinities, and transmissivities of individual conductive featuresintercepted by a borehole, without the use of specialized probes. Usingit in a multiple-flow-rate mode allows, in addition, an estimate of theinherent "far-field" pressure heads in each of the conductive features.The multi-rate method was successfully applied to a 500-m borehole in agranitic formation and reported recently. The present paper presents theapplication of the method to two zones within a 1000-m borehole insedimentary rock, which produced, for each zone, three sets of logs atdifferent pumping rates, each set measured over a period of about oneday. The data sets involve a number of complications, such as variablewell diameter, free water table decline in the well, and effects ofdrilling mud. To analyze data from this borehole, we apply varioustechniques that have been developed for analyzing FFEC logs:direct-fitting, mass-integral, and the multi-rate method mentioned above.In spite of complications associated with the tests, analysis of the datais able to identify 44 hydraulically conducting fractures distributedover the depth interval 150-775 meters below ground surface. Thesalinities (in FEC), and transmissivities and pressure heads (indimensionless form) of these 44 features are obtained and found to varysignificantly among one another. These results are compared with datafrom eight packer tests with packer intervals of 10-80 m, which wereconducted in this borehole over the same depth interval. They are foundto be consistent with these independent packer-test data, thusdemonstrating the robustness of the FFEC logging method under non-idealconditions.

  1. IN-SITU ASSAY OF TRANSURANIC RADIONUCLIDES IN THE VADOSE ZONE USING HIGH-RESOLUTION SPECTRAL GAMMA LOGGING - A HANFORD CASE STUDY

    SciTech Connect (OSTI)

    ROHAY VJ; HENWOOD P; MCCAIN R

    2009-11-30T23:59:59.000Z

    High-resolution spectral gamma logging in steel-cased boreholes is used to detect and quantify transuranic radionuclides in the subsurface. Pu-239, Pu-241, Am-241, and Np-237 are identified based on characteristic decay gammas. Typical minimum detectable levels are on the order of 20 to 40 nCi/g. In intervals of high transuranic concentrations, gamma rays from other sources may complicate analysis and interpretation. Gamma rays detected in the borehole may originate from three sources: decay of the parent transuranic radionuclide or a daughter; alpha interactions; and interactions with neutrons resulting from either spontaneous fission or alpha particle interactions.

  2. Improved Detection of Bed Boundaries for Petrophysical Evaluation with Well Logs: Applications to Carbonate and Organic-Shale Formations

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    , and uncertainty in physical and pore-structure models. The interpretation method introduced in this paper improves. This improvement in the assessment of petrophysical/compositional properties reduces uncertainty in hydrocarbon

  3. Assessment of effectiveness of geologic isolation systems. CIRMIS data system. Volume 4. Driller's logs, stratigraphic cross section and utility routines

    SciTech Connect (OSTI)

    Friedrichs, D.R.

    1980-01-01T23:59:59.000Z

    The Assessment of Effectiveness of Geologic Isolation Systems (AEGIS) Program is developing and applying the methodology for assessing the far-field, long-term post-closure safety of deep geologic nuclear waste repositories. AEGIS is being performed by Pacific Northwest Laboratory (PNL) under contract with the Office of Nuclear Waste Isolation (ONWI) for the Department of Energy (DOE). One task within AEGIS is the development of methodology for analysis of the consequences (water pathway) from loss of repository containment as defined by various release scenarios. Analysis of the long-term, far-field consequences of release scenarios requires the application of numerical codes which simulate the hydrologic systems, model the transport of released radionuclides through the hydrologic systems to the biosphere, and, where applicable, assess the radiological dose to humans. The various input parameters required in the analysis are compiled in data systems. The data are organized and prepared by various input subroutines for use by the hydrologic and transport codes. The hydrologic models simulate the groundwater flow systems and provide water flow directions, rates, and velocities as inputs to the transport models. Outputs from the transport models are basically graphs of radionuclide concentration in the groundwater plotted against time. After dilution in the receiving surface-water body (e.g., lake, river, bay), these data are the input source terms for the dose models, if dose assessments are required. The dose models calculate radiation dose to individuals and populations. CIRMIS (Comprehensive Information Retrieval and Model Input Sequence) Data System is a storage and retrieval system for model input and output data, including graphical interpretation and display. This is the fourth of four volumes of the description of the CIRMIS Data System.

  4. AN EVALUATION OF HYDROSTRATIGRAPHIC CHARACTERIZATION METHODS BASED ON WELL LOGS FOR GROUNDWATER MODELING OF THE HIGH PLAINS AQUIFER IN SOUTHWEST KANSAS

    E-Print Network [OSTI]

    Kreitzer, Sarah R.

    2011-04-27T23:59:59.000Z

    unconfined aquifer that consists mainly of unconsolidated to cemented deposits of clay, silt, sand, and gravel. Measures of saturated thickness (ST) assume that all saturated deposits contribute water to pumping wells equally. However, fine...-grained sediments like clay and silt, as well as locally cemented zones, form low permeability units that impede ground-water flow (Gutentag et al., 1981; Macfarlane and Wilson, 2006; Macfarlane, 2009). In southwest Kansas, unconsolidated sand and gravel deposits...

  5. Simulation of wireline sonic logging measurements acquired with BoreholeEccentered tools using a high-order adaptive

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Torres-Verdín b , Angel Mora d , Victor M. Calo d a Department of Applied Mathematics, Statistics) for truncation of the computational domain. The simulation method was verified for various model problems. A similar method was successfully applied to simulate induction and laterolog resistivity measurements

  6. Joint Radial Inversion of Resistivity and Sonic Logs to Estimate In-Situ Petrophysical and Elastic Properties of Formations

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    in the frequency domain. Synthetic cases consider water-base mud filtrate invading a hydrocarbon-bearing sand-wellbore damage, resulting from drilling and mud-filtrate invasion, can substantially affect sonic and resistivity, with the formation model described by a radial variation of water and hydrocarbon saturations representative of mud

  7. Radiative hydrodynamics in the highly super adiabatic layer of stellar evolution models

    E-Print Network [OSTI]

    F. J. Robinson; P. Demarque; S. Sofia; K. L. Chan; Y. -C. Kim; D. B. Guenther

    2000-11-02T23:59:59.000Z

    We present results of three dimensional simulations of the uppermost part of the sun, at 3 stages of its evolution. Each model includes physically realistic radiative-hydrodynamics (the Eddington approximation is used in the optically thin region), varying opacities and a realistic equation of state (full treatment of the ionization of H and He). In each evolution model, we investigate a domain, which starts at the top of the photosphere and ends just inside the convection zone (about 2400 km in the sun model). This includes all of the super-adiabatic layer (SAL). Due to the different positions of the three models in the $log (g) $ vs $log T_{eff}$ plane, the more evolved models have lower density atmospheres. The reduction in density causes the amount of overshoot into the radiation layer, to be greater in the more evolved models.

  8. TURBULENCE IN A THREE-DIMENSIONAL DEFLAGRATION MODEL FOR TYPE Ia SUPERNOVAE. II. INTERMITTENCY AND THE DEFLAGRATION-TO-DETONATION TRANSITION PROBABILITY

    SciTech Connect (OSTI)

    Schmidt, W.; Niemeyer, J. C. [Institut fuer Astrophysik, Universitaet Goettingen, Friedrich-Hund-Platz 1, D-37077 Goettingen (Germany); Ciaraldi-Schoolmann, F. [Lehrstuhl fuer Astronomie und Astrophysik, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany); Roepke, F. K.; Hillebrandt, W., E-mail: schmidt@astro.physik.uni-goettingen.d [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany)

    2010-02-20T23:59:59.000Z

    The delayed detonation model describes the observational properties of the majority of Type Ia supernovae very well. Using numerical data from a three-dimensional deflagration model for Type Ia supernovae, the intermittency of the turbulent velocity field and its implications on the probability of a deflagration-to-detonation (DDT) transition are investigated. From structure functions of the turbulent velocity fluctuations, we determine intermittency parameters based on the log-normal and the log-Poisson models. The bulk of turbulence in the ash regions appears to be less intermittent than predicted by the standard log-normal model and the She-Leveque model. On the other hand, the analysis of the turbulent velocity fluctuations in the vicinity of the flame front by Roepke suggests a much higher probability of large velocity fluctuations on the grid scale in comparison to the log-normal intermittency model. Following Pan et al., we computed probability density functions for a DDT for the different distributions. The determination of the total number of regions at the flame surface, in which DDTs can be triggered, enables us to estimate the total number of events. Assuming that a DDT can occur in the stirred flame regime, as proposed by Woosley et al., the log-normal model would imply a delayed detonation between 0.7 and 0.8 s after the beginning of the deflagration phase for the multi-spot ignition scenario used in the simulation. However, the probability drops to virtually zero if a DDT is further constrained by the requirement that the turbulent velocity fluctuations reach about 500 km s{sup -1}. Under this condition, delayed detonations are only possible if the distribution of the velocity fluctuations is not log-normal. From our calculations follows that the distribution obtained by Roepke allow for multiple DDTs around 0.8 s after ignition at a transition density close to 1 x 10{sup 7} g cm{sup -3}.

  9. Development of Reservoir Characterization Techniques and Production Models for Exploiting Naturally Fractured Reservoirs

    SciTech Connect (OSTI)

    Wiggins, Michael L; Brown, Raymon L.; Civan, Faruk; Hughes, Richard G.

    2002-10-08T23:59:59.000Z

    During this reporting period, research was continued on characterizing and modeling the behavior of naturally fractured reservoir systems. This report proposed a model to relate the seismic response to production data to determine crack spacing and aperture, provided details of tests of proposed models to obtain fracture properties from conventional well logs with actual field data, and verification of the naturally fractured reservoir simulator developed in this project.

  10. Field project to obtain pressure core, wireline log, and production test data for evaluation of CO/sub 2/ flooding potential. Texas Pacific Bennett Ranch Unit well No. 310, Wasson (San Andres) Field, Yoakum County, Texas

    SciTech Connect (OSTI)

    Swift, T.E.; Goodrich, J.H.; Kumar, R.M.; McCoy, R.L.; Wilhelm, M.H.; Glascock, M.R.

    1982-01-01T23:59:59.000Z

    The coring, logging and testing of Bennett Ranch Unit well No. 310 was a cooperative effort between Texas Pacific, owner of the well, and Gruy Federal, Inc. The requirements of the contract, which are summarized in Enclosure 1, Appendix A, include drilling and coring activities. The pressure-coring and associated logging and testing programs in selected wells are intended to provide data on in-situ oil saturation, porosity and permeability distribution, and other data needed for resource characterization of fields and reservoirs in which CO/sub 2/ injection might have a high probability of success. This report presents detailed information on the first such project. This project demonstrates the usefulness of integrating pressure core, log and production data to realistically evaluate a reservoir for carbon dioxide flood. The engineering of tests and analysis of such experimental data requires original thinking, but the reliability of the results is higher than data derived from conventional tests.

  11. Early survival and height growth of douglas-fir and lodgepole pine seedling and variations in site factors following treatment of logging residues. Forest Service research paper

    SciTech Connect (OSTI)

    Lopushinsky, W.; Zabowski, D.; Anderson, T.D.

    1992-06-01T23:59:59.000Z

    Logging residues were (1) broadcast burned, (2) piled and burned, (3) removed, or (4) left in place after clearcutting in a high elevation subalpine fir/lodgepole pine forest in north-central Washington. Survival, height growth, and nutrient content of foliage of planted Douglas-fir and lodgepole pine seedlings, and variations in soil factors (nutrients, temperature, moisture, and compaction) and air temperature were compared for the four treatments. Little height growth occurred the first year, and it was similar for all treatments, probably due to transplant shock. Height growth the second year increased the most in the burned treatments, and the least in the slash-left treatment. Levels of nutrients in foliage were similar for all treatments and above threshold-deficiency levels except for sulfur. Extractable soil nutrients increased with burn treatments but returned to levels in other treatments within 3 years, best performance of seedlings during the first 2 years was in burn treatments.

  12. Modeling Density Effects in CO2 Injection in Oil Reservoirs and A Case Study of CO2 Sequestration in a Qatari Saline Aquifer

    E-Print Network [OSTI]

    Ahmed, Tausif

    2012-10-19T23:59:59.000Z

    in southwest Qatar is used as a case study for CO2 sequestration. A compositional simulation model is prepared for the Aruma aquifer using the available log data and flow test data. It was found that the grid size is a key parameter in modeling CO2...

  13. 84 T E C H N O LOG Y R E V I E W O c tob e r 2 0 0 3 www.technologyreview.com Nimmi Ramanujam,35

    E-Print Network [OSTI]

    Samudrala, Ram

    84 T E C H N O LOG Y R E V I E W O c tob e r 2 0 0 3 www.technologyreview.com Nimmi Ramanujam,35 to launch Genomatica in San Diego in 2000.Today,the company is attracting partners such as Dow Chemical

  14. How to Obtain Your DARS to Declare the BA Economics Major Once you've logged into the BU Brain and entered your B#, you will need to do the following

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    How to Obtain Your DARS to Declare the BA Economics Major Once you've logged into the BU Brain DARS" The following screen prints will show you how to run the pre-declaration DARS for Economics the "Economics Pre-Declaration" DARS appears. Click "Economics Pre-Declaration" to open. Print the entire

  15. Combined Estimation of Hydrogeologic Conceptual Model and Parameter Uncertainty

    SciTech Connect (OSTI)

    Meyer, Philip D.; Ye, Ming; Neuman, Shlomo P.; Cantrell, Kirk J.

    2004-03-01T23:59:59.000Z

    The objective of the research described in this report is the development and application of a methodology for comprehensively assessing the hydrogeologic uncertainties involved in dose assessment, including uncertainties associated with conceptual models, parameters, and scenarios. This report describes and applies a statistical method to quantitatively estimate the combined uncertainty in model predictions arising from conceptual model and parameter uncertainties. The method relies on model averaging to combine the predictions of a set of alternative models. Implementation is driven by the available data. When there is minimal site-specific data the method can be carried out with prior parameter estimates based on generic data and subjective prior model probabilities. For sites with observations of system behavior (and optionally data characterizing model parameters), the method uses model calibration to update the prior parameter estimates and model probabilities based on the correspondence between model predictions and site observations. The set of model alternatives can contain both simplified and complex models, with the requirement that all models be based on the same set of data. The method was applied to the geostatistical modeling of air permeability at a fractured rock site. Seven alternative variogram models of log air permeability were considered to represent data from single-hole pneumatic injection tests in six boreholes at the site. Unbiased maximum likelihood estimates of variogram and drift parameters were obtained for each model. Standard information criteria provided an ambiguous ranking of the models, which would not justify selecting one of them and discarding all others as is commonly done in practice. Instead, some of the models were eliminated based on their negligibly small updated probabilities and the rest were used to project the measured log permeabilities by kriging onto a rock volume containing the six boreholes. These four projections, and associated kriging variances, were averaged using the posterior model probabilities as weights. Finally, cross-validation was conducted by eliminating from consideration all data from one borehole at a time, repeating the above process, and comparing the predictive capability of the model-averaged result with that of each individual model. Using two quantitative measures of comparison, the model-averaged result was superior to any individual geostatistical model of log permeability considered.

  16. GEO-ENGINEERING MODELING THROUGH INTERNET INFORMATICS (GEMINI)

    SciTech Connect (OSTI)

    W. Lynn Watney; John H. Doveton

    2004-05-13T23:59:59.000Z

    GEMINI (Geo-Engineering Modeling through Internet Informatics) is a public-domain web application focused on analysis and modeling of petroleum reservoirs and plays (http://www.kgs.ukans.edu/Gemini/index.html). GEMINI creates a virtual project by ''on-the-fly'' assembly and analysis of on-line data either from the Kansas Geological Survey or uploaded from the user. GEMINI's suite of geological and engineering web applications for reservoir analysis include: (1) petrofacies-based core and log modeling using an interactive relational rock catalog and log analysis modules; (2) a well profile module; (3) interactive cross sections to display ''marked'' wireline logs; (4) deterministic gridding and mapping of petrophysical data; (5) calculation and mapping of layer volumetrics; (6) material balance calculations; (7) PVT calculator; (8) DST analyst, (9) automated hydrocarbon association navigator (KHAN) for database mining, and (10) tutorial and help functions. The Kansas Hydrocarbon Association Navigator (KHAN) utilizes petrophysical databases to estimate hydrocarbon pay or other constituent at a play- or field-scale. Databases analyzed and displayed include digital logs, core analysis and photos, DST, and production data. GEMINI accommodates distant collaborations using secure password protection and authorized access. Assembled data, analyses, charts, and maps can readily be moved to other applications. GEMINI's target audience includes small independents and consultants seeking to find, quantitatively characterize, and develop subtle and bypassed pays by leveraging the growing base of digital data resources. Participating companies involved in the testing and evaluation of GEMINI included Anadarko, BP, Conoco-Phillips, Lario, Mull, Murfin, and Pioneer Resources.

  17. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for the United States Forest Service: Caribou-Targhee National Forest

    SciTech Connect (OSTI)

    Stephen Schey; Jim Francfort; Ian Nienhueser

    2014-06-01T23:59:59.000Z

    Battelle Energy Alliance, LLC, managing and operating contractor for the U.S. Department of Energy’s Idaho National Laboratory, is the lead laboratory for U.S. Department of Energy Advanced Vehicle Testing. Battelle Energy Alliance, LLC contracted with Intertek Testing Services, North America (ITSNA) to collect and evaluate data on federal fleet operations as part of the Advanced Vehicle Testing Activity’s Federal Fleet Vehicle Data Logging and Characterization study. The Advanced Vehicle Testing Activity study seeks to collect and evaluate data to validate the utilization of advanced electric drive vehicle transportation. This report focuses on the Caribou-Targhee National Forest (CTNF) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of plug-in electric vehicles (PEVs) into the agencies’ fleets. Individual observations of these selected vehicles provide the basis for recommendations related to electric vehicle adoption and whether a battery electric vehicle (BEV) or plug-in hybrid electric vehicle (PHEV) (collectively plug-in electric vehicles, or PEVs) can fulfill the mission requirements. ITSNA acknowledges the support of Idaho National Laboratory and CTNF for participation in the study. ITSNA is pleased to provide this report and is encouraged by enthusiasm and support from the Forest Service and CTNF personnel.

  18. IMPROVED V II log(gf) VALUES, HYPERFINE STRUCTURE CONSTANTS, AND ABUNDANCE DETERMINATIONS IN THE PHOTOSPHERES OF THE SUN AND METAL-POOR STAR HD 84937

    SciTech Connect (OSTI)

    Wood, M. P.; Lawler, J. E.; Den Hartog, E. A. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Sneden, C. [Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712 (United States); Cowan, J. J., E-mail: mpwood@wisc.edu, E-mail: jelawler@wisc.edu, E-mail: eadenhar@wisc.edu, E-mail: chris@verdi.as.utexas.edu, E-mail: cowan@nhn.ou.edu [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019 (United States)

    2014-10-01T23:59:59.000Z

    New experimental absolute atomic transition probabilities are reported for 203 lines of V II. Branching fractions are measured from spectra recorded using a Fourier transform spectrometer and an echelle spectrometer. The branching fractions are normalized with radiative lifetime measurements to determine the new transition probabilities. Generally good agreement is found between this work and previously reported V II transition probabilities. Two spectrometers, independent radiometric calibration methods, and independent data analysis routines enable a reduction in systematic uncertainties, in particular those due to optical depth errors. In addition, new hyperfine structure constants are measured for selected levels by least squares fitting line profiles in the FTS spectra. The new V II data are applied to high resolution visible and UV spectra of the Sun and metal-poor star HD 84937 to determine new, more accurate V abundances. Lines covering a range of wavelength and excitation potential are used to search for non-LTE effects. Very good agreement is found between our new solar photospheric V abundance, log ?(V) = 3.95 from 15 V II lines, and the solar-system meteoritic value. In HD 84937, we derive [V/H] = –2.08 from 68 lines, leading to a value of [V/Fe] = 0.24.

  19. Geothermal Well Logging: Geological Wireline Logs and Fracture Imaging |

    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.pdf Jump1946865°,Park,2005)Energy InformationInformationGeothermalOpen

  20. Turbulence in a 3D deflagration model for type Ia SNe: II. Intermittency and the deflagration-to-detonation transition probability

    E-Print Network [OSTI]

    Schmidt, W; Niemeyer, J C; Roepke, F K; Hillebrandt, W

    2009-01-01T23:59:59.000Z

    The delayed detonation model describes the observational properties of the majority of type Ia supernovae very well. Using numerical data from a three-dimensional deflagration model for type Ia supernovae, the intermittency of the turbulent velocity field and its implications on the probability of a deflagration-to-detonation (DDT) transition are investigated. From structure functions of the turbulent velocity fluctuations, we determine intermittency parameters based on the log-normal and the log-Poisson models. On the other hand, the analysis of the turbulent velocity fluctuations in the vicinity of the flame front by Roepke suggests a much higher probability of large velocity fluctuations on the grid scale in comparison to the log-normal intermittency model. Following Pan et al., we computed probability density functions for a DDT for the different distributions. Assuming that a DDT can occur in the stirred flame regime, as proposed by Woosley et al., the log-normal model would imply a delayed detonation be...

  1. Internet Data logging and Display 

    E-Print Network [OSTI]

    Sweeney, J., Jr.; Culp, C.; Haberl, J. S.

    2001-01-01T23:59:59.000Z

    InterDAQ Research Team. December 2001, Final Report Energy Systems Laboratory, Texas A&M University IEEE Instrumentation and Measurement Technology Conference Budapest, Hungary, May 21-23, 2001 An Internet Based Power Measurement Technique M. Yeary1, B...-time monitoring and dynamic thermal rating of power transmission circuits," IEEE Transactions on Power Delivery, vol. 11, no. 3, pp. 1407-1418, 1996. [6] A. Belardinelii, G. Palagi, R. Bedini, A. Ripoli, V. Macellari, D. Franchi, "Advanced technology for personal...

  2. New Enterprise Log Issue 10

    E-Print Network [OSTI]

    Multiple Contributors

    1985-01-01T23:59:59.000Z

    ojO .. " "., .. .. to .. """" .... "" .. .. " Fiona Culpecl). .. " ":0"" 0(0 .... "" 45 The Way Of The "'ford""oooooo oo .. " ........ " .. .. .. .,.,"""" Janet La\\N'n;",,; ""'''''''''''';000 00...',m, Kathleen Stapley , Fiona Culpeck, Kelly Hi tchell and Patricia Thompsono If the fc,nzine seems a little orientated tOl-lards '\\oIhat if 0,0' and 'Just supposing that 0, 0' type stories, it's because of the neevsletter competitions \\'/e'Ve heldo...

  3. Illegal Logging and Related Trade

    E-Print Network [OSTI]

    are the responsibility of the authors. All rights reserved. No part of this publication may be reproduced or transmitted by Stephen Austin and Sons Ltd The material selected for the printing of this report is Elemental Chlorine framework 14 3.1.3 Checks and balances 16 3.1.4 International trade cooperation 18 3.1.5 Ensuring a balance

  4. mass_and_darcy.log

    E-Print Network [OSTI]

    ... irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.

  5. ACTIVITY LOG UNL CURRICULUM COMMITTEE

    E-Print Network [OSTI]

    Farritor, Shane

    , prereq, descrip N N Y December 12/15/2004 Regular J&MC BRDC 359 Cinematography/Videography New Course&MC BRDC 362 Advanced Production New Course December 12/15/2004 Consent J&MC BRDC 369 Cinematography

  6. Internet Data logging and Display

    E-Print Network [OSTI]

    Sweeney, J., Jr.; Culp, C.; Haberl, J. S.

    2001-01-01T23:59:59.000Z

    -time monitoring and dynamic thermal rating of power transmission circuits," IEEE Transactions on Power Delivery, vol. 11, no. 3, pp. 1407-1418, 1996. [6] A. Belardinelii, G. Palagi, R. Bedini, A. Ripoli, V. Macellari, D. Franchi, "Advanced technology for personal...

  7. Log interpretation of shaly sandstones 

    E-Print Network [OSTI]

    Baker, Joel Foster

    1987-01-01T23:59:59.000Z

    bioturbated, discontinuous, subhori=ontal clay laminae. Some clay is distributed as rounded clasts ranging from 1 to 2 mm in diameter with some up to 30 mm in diameter. The next 7. 5 ft, from 13223 to 13231. 5 ft (4030. 4 to 4033. 0 m), Figure 11...

  8. Acoustic Logs | 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 1AMEE Jump to: navigation,Barriers toAclara Software Jump to:

  9. NERSC Job Logs and Statistics

    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 for4,645 3,625 1,006 492 742EnergyOnItemResearch > The EnergyCenterDioxide CaptureSee the Foundry'sMcGuire AFB,T I O CS

  10. Image Logs | 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 are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty, Texas:ITCSolidIdaho‎Information RiverIllumitex Jump

  11. Caliper Log | 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 EditCalifornia:Power LPInformation 8th congressionalCalipatria, California:

  12. Chemical Logging | 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 EditCalifornia:PowerCER.png El CER es unaChelmsford, Massachusetts: EnergyOpen

  13. Gamma Log | 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 are8COaBulkTransmissionSitingProcess.pdf Jump1946865°,Park, Texas: Energy Resources Jump81"Information1987) |

  14. This page shows how to use the My Pitt Video (Panopto) iOS application on an iPad. To log into the My Pitt Video (Panopto) iOS App, tap "Sign In" in the top left corner.

    E-Print Network [OSTI]

    Benos, Panayiotis "Takis"

    iPad App iPad App This page shows how to use the My Pitt Video (Panopto) iOS application on an iPad. Login To log into the My Pitt Video (Panopto) iOS App, tap "Sign In" in the top left corner. In the Sign name and tap "Record a new video" to begin recording. Page 9 of 17 #12;iPad App Once you are finished

  15. 1.4 PETROPHYSICS: Combined Rock and Fluid Character Integration of geological and petrophysical data allows development of a rock-fluid model for

    E-Print Network [OSTI]

    Schechter, David S.

    data allows development of a rock-fluid model for upper Spraberry rocks. This study identifies the different rock types that comprise the subject reservoirs, marginal reservoirs and non-reservoir rocks shales, clay rich siltstones and very fine sandstones units uses gamma-ray logs (Fig.1.2-1) and is widely

  16. Reducing Degeneracy in Maximum Entropy Models of Networks

    E-Print Network [OSTI]

    Horvát, Szabolcs; Toroczkai, Zoltán

    2014-01-01T23:59:59.000Z

    Based on Jaynes's maximum entropy principle, exponential random graphs provide a family of principled models that allow the prediction of network properties as constrained by empirical data. However, their use is often hindered by the degeneracy problem characterized by spontaneous symmetry-breaking, where predictions simply fail. Here we show that degeneracy appears when the corresponding density of states function is not log-concave. We propose a solution to the degeneracy problem for a large class of models by exploiting the nonlinear relationships between the constrained measures to convexify the domain of the density of states. We demonstrate the effectiveness of the method on examples, including on Zachary's karate club network data.

  17. Lower bound on the mean square displacement of particles in the hard disk model

    E-Print Network [OSTI]

    Thomas Richthammer

    2015-04-30T23:59:59.000Z

    The hard disk model is a 2D Gibbsian process of particles interacting via pure hard core repulsion. At high particle density the model is believed to show orientational order, however, it is known not to exhibit positional order. Here we investigate to what extent particle positions may fluctuate. We consider a finite volume version of the model in a box of dimensions $2n \\times 2n$ with arbitrary boundary configuration,and we show that the mean square displacement of particles near the center of the box is bounded from below by $c \\log n$. The result generalizes to a large class of models with fairly arbitrary interaction.

  18. Journal of Machine Learning Research 13 (2012) 2293-2337 Submitted 7/11; Revised 4/12; Published 8/12 High-Dimensional Gaussian Graphical Model Selection: Walk

    E-Print Network [OSTI]

    Anandkumar, Animashree

    and Liu (1968) established that structure estimation in tree models reduces to a maximum weight spanning, Irvine Irvine, CA 92697 Alan S. Willsky WILLSKY@MIT.EDU Stochastic Systems Group Laboratory log p), where p is the number of variables and Jmin is the minimum (absolute) edge potential

  19. Model for locating fluids` contracts in petroleum reservoirs

    SciTech Connect (OSTI)

    Udegbunam, E.O. [Illinois State Geological Survey, Champaign, IL (United States); Numbere, D.T. [Univ. of Missouri, Rolla, MO (United States)

    1994-12-31T23:59:59.000Z

    Direct determination of the gas-water contact (GWC) or the oil-water contact (OWC) in new wells from geophysical logs, core analysis data and/or whole core inspection is often difficult. Rapidly changing reservoir quality in the interval of interest or gradually changing saturation profiles in the vicinity of the contact can make the determination of the GWC or OWC difficult. This paper presents a model for the accurate placement of the GWC or OWC. The input data are water saturations at various well depths as interpreted from induction logs and the average residual oil saturation. When available, permeability and porosity values from core analysis may improve the result. Using a power-law equation or a Langmuir isotherm-type equation to represent the capillary pressure saturation relationship, the GWC or OWC is expressed as a function of water saturation and well depth. A nonlinear optimization technique is then used to determine the GWC or OWC. The applicability of this model is demonstrated with a field example. The calculated OWC values from all variations of the model fall within 4 feet of the actual OWC value. This model can only be applied in an oil or gas well where an equilibrium capillary curve and a hydrocarbon-water contact occur.

  20. Analytic Model of the Universal Structure of Turbulent Boundary Layers

    E-Print Network [OSTI]

    Victor S. L'vov; Itamar Procaccia; Oleksii Rudenko

    2006-06-21T23:59:59.000Z

    Turbulent boundary layers exhibit a universal structure which nevertheless is rather complex, being composed of a viscous sub-layer, a buffer zone, and a turbulent log-law region. In this letter we present a simple analytic model of turbulent boundary layers which culminates in explicit formulae for the profiles of the mean velocity, the kinetic energy and the Reynolds stress as a function of the distance from the wall. The resulting profiles are in close quantitative agreement with measurements over the entire structure of the boundary layer, without any need of re-fitting in the different zones.

  1. Aquifer sensitivity assessment modeling at a large scale

    SciTech Connect (OSTI)

    Berg, R.C.; Abert, C.C. (Illinois State Geological Survey, Champaign, IL (United States))

    1994-03-01T23:59:59.000Z

    A 480 square-mile region within Will County, northeastern Illinois was used as a test region for an evaluation of the sensitivity of aquifers to contamination. An aquifer sensitivity model was developed using a Geographic Information System (GIS) with ARC/INFO software to overlay and combine several data layers. Many of the input data layers were developed using 2-dimensional surface modeling (Interactive Surface Modeling (ISM)) and 3-dimensional volume modeling (Geologic Modeling Program (GMP)) computer software. Most of the input data layers (drift thickness, thickness of sand and gravel, depth to first aquifer) were derived from interpolation of descriptive logs for water wells and engineering borings from their study area. A total of 2,984 logs were used to produce these maps. The components used for the authors' model are (1) depth to sand and gravel or bedrock, (2) thickness of the uppermost sand and gravel aquifer, (3) drift thickness, and (4) absence or presence of uppermost bedrock aquifer. The model is an improvement over many aquifer sensitivity models because it combines specific information on depth to the uppermost sand and gravel aquifer with information on the thickness of the uppermost sand and gravel aquifer. The manipulation of the source maps according to rules-based assumptions results in a colored aquifer sensitivity map for the Will County study area. This colored map differentiates 42 aquifer sensitivity map areas by using line patterns within colors. The county-scale model results in an aquifer sensitivity map that can be a useful tool for making land-use planning decisions regarding aquifer protection and management of groundwater resources.

  2. Identification and delineation of low resistivity, low permeability reservoirs using qualitative sidewall sample log k * S[sub O] relationships in the western shallow oil zone, Elk Hills Field, California

    SciTech Connect (OSTI)

    Beacom, E.K.; Kornreich, I.S. (System Technology Associates, Inc., Golden, CO (United States))

    1996-01-01T23:59:59.000Z

    Over 500 wells, including wells producing from the deeper Miocene Stevens sands, penetrate the Western Shallow Oil Zone (Pliocene Etchegoin Formation) at the Elk Hills Naval Petroleum Reserve in California. The Western Shallow Oil Zone Gusher and Calitroleum sands are very fine grained, silty and pyritic and are interbedded with silty shales. Electric logs generally show 1[1/2]-2[1/2] ohm-meters of deep resistivity and the spontaneous potential displays little or no response to the sands. However, approximately 180 wells in each of the mapped productive sands have sidewall sample data to visually inspect the rock for hydrocarbons. Each productive interval within the Western Shallow Oil Zone has two or more pools. The most exploited (and most heavily drilled) of these pools is at the western end of the Eastern anticline. The pools on the Western anticline have few tests and production is limited and generally commingled. In order to identify productive intervals and to delineate the areal extent of these sands, qualitative assessment of sidewall sample data was done and maps of log permeability times oil saturation were prepared for each zone. The analysis showed large amounts of unexploited hydrocarbons in the Western pools. Complete exploitation of the Gusher and Calitroleum sands will recover in excess of 11 million additional barrels of 38 degree gravity oil.

  3. Identification and delineation of low resistivity, low permeability reservoirs using qualitative sidewall sample log k * S{sub O} relationships in the western shallow oil zone, Elk Hills Field, California

    SciTech Connect (OSTI)

    Beacom, E.K.; Kornreich, I.S. [System Technology Associates, Inc., Golden, CO (United States)

    1996-12-31T23:59:59.000Z

    Over 500 wells, including wells producing from the deeper Miocene Stevens sands, penetrate the Western Shallow Oil Zone (Pliocene Etchegoin Formation) at the Elk Hills Naval Petroleum Reserve in California. The Western Shallow Oil Zone Gusher and Calitroleum sands are very fine grained, silty and pyritic and are interbedded with silty shales. Electric logs generally show 1{1/2}-2{1/2} ohm-meters of deep resistivity and the spontaneous potential displays little or no response to the sands. However, approximately 180 wells in each of the mapped productive sands have sidewall sample data to visually inspect the rock for hydrocarbons. Each productive interval within the Western Shallow Oil Zone has two or more pools. The most exploited (and most heavily drilled) of these pools is at the western end of the Eastern anticline. The pools on the Western anticline have few tests and production is limited and generally commingled. In order to identify productive intervals and to delineate the areal extent of these sands, qualitative assessment of sidewall sample data was done and maps of log permeability times oil saturation were prepared for each zone. The analysis showed large amounts of unexploited hydrocarbons in the Western pools. Complete exploitation of the Gusher and Calitroleum sands will recover in excess of 11 million additional barrels of 38 degree gravity oil.

  4. Yunnan-III models for Evolutionary population synthesis

    E-Print Network [OSTI]

    Zhang, F; Han, Z; Zhuang, Y; Kang, X

    2012-01-01T23:59:59.000Z

    We build the Yunnan-III evolutionary population synthesis (EPS) models by using the MESA stellar evolution code, BaSeL stellar spectra library and the initial mass functions (IMFs) of Kroupa and Salpeter, and present colours and integrated spectral energy distributions (ISEDs) of solar-metallicity stellar populations (SPs) in the range of 1Myr-15 Gyr. The main characteristic of the Yunnan-III EPS models is the usage of a set of self-consistent solar-metallicity stellar evolutionary tracks (the masses of stars are from 0.1 to 100Msun). This set of tracks is obtained by using the state-of-the-art MESA code. MESA code can evolve stellar models through thermally pulsing asymptotic giant branch (TP-AGB) phase for low- and intermediate-mass stars. By comparisons, we confirm that the inclusion of TP-AGB stars make the V-K, V-J and V-R colours of SPs redder and the infrared flux larger at ages log(t/yr)>7.6 (the differences reach the maximum at log(t/yr)~8.6, ~0.5-0.2mag for colours, ~2 times for K-band flux). The st...

  5. Queuing models System dynamics models

    E-Print Network [OSTI]

    Glushko, Robert J.

    models Value chain models Business Model / Organizational Perspective Process Perspective Information#12;#12;#12;#12;Queuing models System dynamics models #12;#12;#12;#12;Blueprint or touchpoint

  6. Exponential control of overlap in the replica method for p-spin Sherrington-Kirkpatrick model

    E-Print Network [OSTI]

    Dmitry Panchenko

    2007-01-30T23:59:59.000Z

    Recently, Michel Talagrand computed the large deviations limit $\\lim_{N\\to\\infty}(Na)^{-1}\\log \\e Z_N^a$ for the moments of the partition function $Z_N$ in the Sherrington-Kirkpatrick model for all real $a\\geq 0.$ For $a\\geq 1$ the limit is given by Guerra's inverse bound and this result extends the classical physicist's replica method that corresponds to integer $a.$ We give a new proof for $a\\geq 1$ in the case of the pure $p$-spin SK model that provides a strong exponential control of the overlap.

  7. Universality of cutoff for the Ising model

    E-Print Network [OSTI]

    Eyal Lubetzky; Allan Sly

    2014-07-28T23:59:59.000Z

    On any locally-finite geometry, the stochastic Ising model is known to be contractive when the inverse-temperature $\\beta$ is small enough, via classical results of Dobrushin and of Holley in the 1970's. By a general principle proposed by Peres, the dynamics is then expected to exhibit cutoff. However, so far cutoff for the Ising model has been confirmed mainly for lattices, heavily relying on amenability and log Sobolev inequalities. Without these, cutoff was unknown at any fixed $\\beta>0$, no matter how small, even in basic examples such as the Ising model on a binary tree or a random regular graph. We use the new framework of information percolation to show that, in any geometry, there is cutoff for the Ising model at high enough temperatures. Precisely, on any sequence of graphs with maximum degree $d$, the Ising model has cutoff provided that $\\beta<\\kappa/d$ for some absolute constant $\\kappa$ (a result which, up to the value of $\\kappa$, is best possible). Moreover, the cutoff location is established as the time at which the sum of squared magnetizations drops to 1, and the cutoff window is $O(1)$, just as when $\\beta=0$. Finally, the mixing time from almost every initial state is not more than a factor of $1+\\epsilon_\\beta$ faster then the worst one (with $\\epsilon_\\beta\\to0$ as $\\beta\\to 0$), whereas the uniform starting state is at least $2-\\epsilon_\\beta$ times faster.

  8. Thermodynamic Model for the Solubility of Ba(SeO4, SO4) Precipitates

    SciTech Connect (OSTI)

    Rai, D.; Felmy, Andrew R.; Moore, Dean A.; Kitamura, Akira; Yoshikawa, Hideki; Doi, Reisuke; Yoshida, Yasushi

    2014-08-15T23:59:59.000Z

    Abstract: The solubility of Ba(SeO4, SO4) precipitates was determined as a function of the BaSeO4 mole fractions, ranging from 0.0015 to 0.3830, and time with an equilibration period extending to as long as 302 days. Equilibrium/steady state conditions in this system are reached in ? 65 days. Pitzer’s ion interaction model was used to calculate solid and aqueous phase activity coefficients. Thermodynamic analyses showed that the data do not satisfy Gibbs-Duhem equation, thereby demonstrating that a single-solid solution phase does not control both the selenate and sulfate concentrations. Our extensive data with log 10 [Ba] ranging from ?3.6 to ?5.9 mol kg?1, log 10 [SeO4] rangingfrom?3.6 to -5.2 mol kg?1, and log 10 [SO4] ranging from?4.0 to ?5.3 mol kg?1 can be explained with the formation of an ideal BaSeO4 solid solution phase that controls the selenium concentrations and a slightly disordered/less-crystalline BaSO4(s) (log 10𝐾?sp = ?9.5 instead of ?10.05 for barite) that controls the sulfate concentrations. In these experiments the BaSO4 component of the solid solution phase never reaches thermodynamic equilibrium with the aqueous phase. Thermodynamic interpretations of the data show that both the ideal BaSeO4 solid solution phase and less-crystalline BaSO4 (s) phase are in equilibrium with each other in the entire range of BaSeO 4 mole fractions investigated in this study.

  9. Statistical models and regularization strategies in statistical image reconstruction of low-dose X-ray computed tomography: a survey

    E-Print Network [OSTI]

    Zhang, Hao; Ma, Jianhua; Lu, Hongbing; Liang, Zhengrong

    2014-01-01T23:59:59.000Z

    Statistical image reconstruction (SIR) methods have shown potential to substantially improve the image quality of low-dose X-ray computed tomography (CT) as compared to the conventional filtered back-projection (FBP) method for various clinical tasks. According to the maximum a posterior (MAP) estimation, the SIR methods can be typically formulated by an objective function consisting of two terms: (1) data-fidelity (or equivalently, data-fitting or data-mismatch) term modeling the statistics of projection measurements, and (2) regularization (or equivalently, prior or penalty) term reflecting prior knowledge or expectation on the characteristics of the image to be reconstructed. Existing SIR methods for low-dose CT can be divided into two groups: (1) those that use calibrated transmitted photon counts (before log-transform) with penalized maximum likelihood (pML) criterion, and (2) those that use calibrated line-integrals (after log-transform) with penalized weighted least-squares (PWLS) criterion. Accurate s...

  10. Dual-porosity reservoir modeling of the fractured Hanifa reservoir, Abqaiq Field, Saudi Arabia

    SciTech Connect (OSTI)

    Luthy, S.T. [Saudi Aramco, Dhahran (Saudi Arabia)

    1995-08-01T23:59:59.000Z

    Fractures play a significant role in the transmissibility of the Hanifa reservoir at Abqaiq Field. The Hanifa is a Type 2 fractured reservoir characterized by a finely-crystalline carbonate matrix which contains most of the reservoir storage porosity, and a stylolitic fracture system which provides essential permeability. Integration of borehole imaging data with available open-hole log, core, and well-test data from horizontal and vertical wells allowed for the distribution of fracture parameters, including fracture density, aperture, porosity, and permeability throughout a geocellular model. Analysis of over 5000 fractures showed that changes in lithology, grain size, and/or bed thickness do not correlate with changes in fracture densities. Review of P- and S-wave log data showed that porosity is negatively correlated with fracture density and mechanical rock strength. From these relationships, it was possible to utilize additional wells where porosity log data was available to calculate fracture densities. These wells were used to generate matrix porosity and permeability as well as fracture density attributes in a 12-sequence, 29-layer geocellular model. Fracture permeabilities compare favorably with well-test derived productivity indices. Three-dimensional visualization of model attributes showed that a monotonous and low (<10 md) distribution of matrix- related permeability contrasts sharply with highly variable and relatively high (ER 50 md) permeabilities of the fracture system. Reliability of the geocellular model to predict fracture densities and associated permeabilities has been confirmed by subsequent drilling of high cost horizontal wells, and is being used in reservoir engineering and development drilling planning efforts.

  11. A grid of MARCS model atmospheres for late-type stars I. Methods and general properties

    E-Print Network [OSTI]

    Bengt Gustafsson; Bengt Edvardsson; Kjell Eriksson; Uffe Graae Jorgensen; Aake Nordlund; Bertrand Plez

    2008-05-05T23:59:59.000Z

    We have constructed a grid of about 10,000 spherically symmetric and plane-parallel models with the MARCS program, and make it available for public use. Parameter ranges are: Teff=2500 to 8000 K, log g =log(GM/R2)= -1 to 5 (cgs) with various masses and radii, [Me/H]=-5 to +1, with [Alpha/Fe] = 0.0 and 0.4 and different choices of C and N abundances to also represent stars of types R, S and N, and with microturbulence parameters from 1 to 5 km/s. We also list fluxes in approximately 108,000 wavelength points. Underlying assumptions in addition to 1D stratification include hydrostatic equilibrium, MLT convection and LTE. A number of general properties of the models are discussed, in relation to the effects of changing blanketing and sphericity. Models are compared with other available grids and excellent agreement is found with plane-parallel models of Castelli and Kurucz within the overlapping parameter range. Although there are departures from the spherically symmetric NextGen models, the agreement with more recent PHOENIX models is gratifying. The models of the grid show regularities, but some interesting departures from general patterns occur for the coolest models due to the molecular opacities. We have tested rules of thumb concerning effects of blanketing and sphericity and found them to often be astonishingly accurate. Some interesting new phenomena have been discovered, such as the intricate coupling between blanketing and sphericity, and the strong effects of carbon enhancement on metal-poor models. We give further details of models and comparisons with observations in subsequent papers.

  12. Joint inversion of marine seismic AVA and CSEM data using statistical rock-physics models and Markov random fields: Stochastic inversion of AVA and CSEM data

    SciTech Connect (OSTI)

    Chen, J.; Hoversten, G.M.

    2011-09-15T23:59:59.000Z

    Joint inversion of seismic AVA and CSEM data requires rock-physics relationships to link seismic attributes to electrical properties. Ideally, we can connect them through reservoir parameters (e.g., porosity and water saturation) by developing physical-based models, such as Gassmann’s equations and Archie’s law, using nearby borehole logs. This could be difficult in the exploration stage because information available is typically insufficient for choosing suitable rock-physics models and for subsequently obtaining reliable estimates of the associated parameters. The use of improper rock-physics models and the inaccuracy of the estimates of model parameters may cause misleading inversion results. Conversely, it is easy to derive statistical relationships among seismic and electrical attributes and reservoir parameters from distant borehole logs. In this study, we develop a Bayesian model to jointly invert seismic AVA and CSEM data for reservoir parameter estimation using statistical rock-physics models; the spatial dependence of geophysical and reservoir parameters are carried out by lithotypes through Markov random fields. We apply the developed model to a synthetic case, which simulates a CO{sub 2} monitoring application. We derive statistical rock-physics relations from borehole logs at one location and estimate seismic P- and S-wave velocity ratio, acoustic impedance, density, electrical resistivity, lithotypes, porosity, and water saturation at three different locations by conditioning to seismic AVA and CSEM data. Comparison of the inversion results with their corresponding true values shows that the correlation-based statistical rock-physics models provide significant information for improving the joint inversion results.

  13. AC magnetic measurements of the ALS Booster Dipole Engineering Model Magnet

    SciTech Connect (OSTI)

    Green, M.I.; Keller, R.; Nelson, D.H.; Hoyer, E.

    1989-03-01T23:59:59.000Z

    10 Hz sine wave and 2 Hz sawtooth AC magnetic measurements of he curved ALS Booster Dipole Engineering Model Magnet have been accomplished. Long curved coils were utilized to measure the integral transfer function and uniformity. Point coils and a Hall Probe were used to measure magnetic induction and its uniformity. The data were logged and processed by a Tektronix 11401 digital oscilloscope. The dependence of the effective length on the field was determined from the ratio of the integral coil signals to the point coil signals. Quadrupole and sextupole harmonics were derived from the point and integral uniformity measurements. 5 refs., 4 figs., 2 tabs.

  14. An O(log n/ log log n)-approximation Algorithm for the Asymmetric Traveling Salesman Problem

    E-Print Network [OSTI]

    Saberi, Amin

    Asadpour Michel X. Goemans Aleksander Madry Shayan Oveis Gharan§ Amin Saberi¶ Abstract We consider of Management Science and Engi- neering. saberi@stanford.edu. theorem [24] shows that if the tree chosen

  15. Lifecycle Model

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

    1997-05-21T23:59:59.000Z

    This chapter describes the lifecycle model used for the Departmental software engineering methodology.

  16. Petrophysical evaluation of subterranean formations

    DOE Patents [OSTI]

    Klein, James D; Schoderbek, David A; Mailloux, Jason M

    2013-05-28T23:59:59.000Z

    Methods and systems are provided for evaluating petrophysical properties of subterranean formations and comprehensively evaluating hydrate presence through a combination of computer-implemented log modeling and analysis. Certain embodiments include the steps of running a number of logging tools in a wellbore to obtain a variety of wellbore data and logs, and evaluating and modeling the log data to ascertain various petrophysical properties. Examples of suitable logging techniques that may be used in combination with the present invention include, but are not limited to, sonic logs, electrical resistivity logs, gamma ray logs, neutron porosity logs, density logs, NRM logs, or any combination or subset thereof.

  17. Dual-porosity reservoir modeling of the fractured Hanifa reservoir, Abqaiq Field, Saudi Arabia

    SciTech Connect (OSTI)

    Luthy, S.T. [Saudi Aramco, Dhahran (Saudi Arabia)

    1996-12-31T23:59:59.000Z

    Fractures play a significant role in the transmissibility of the Hanifa reservoir at Abqaiq Field. The Hanifa is a Type 2 fractured reservoir characterized by a finely-crystalline carbonate matrix which contains most of the reservoir storage porosity, and a stylolitic fracture system which provides essential permeability. Comparisons of over 5000 fractures identified from core and borehole image data with open-hole log data showed that porosity is negatively correlated with fracture density and mechanical rock strength. From these relationships, it was possible to utilize additional wells where porosity log data was available to calculate fracture densities. These wells were used to generate matrix porosity and permeability as well as fracture density attributes in a 12-sequence, 29-layer geocellular model. The effect of structural curvature on fracture intensity in the reservoir was estimated by mapping the derivative of structural dip. Incorporation of structural curvature explained variations in well test behavior not predicted by initial estimates of fracture density from porosity alone. Resultant fracture permeabilities compared favorably with well-test derived productivity indices. Three-dimensional visualization of model attributes showed that a monotonous and low (<10 md) distribution of matrix-related permeability contrasts sharply with highly variable and relatively high (>50 md) permeabilities of the fracture system. Reliability of the geocellular model to predict fracture densities and associated permeabilities has been confirmed by subsequent drilling of high cost horizontal wells, and is being used in reservoir engineering and development drilling planning efforts.

  18. Dual-porosity reservoir modeling of the fractured Hanifa reservoir, Abqaiq Field, Saudi Arabia

    SciTech Connect (OSTI)

    Luthy, S.T. (Saudi Aramco, Dhahran (Saudi Arabia))

    1996-01-01T23:59:59.000Z

    Fractures play a significant role in the transmissibility of the Hanifa reservoir at Abqaiq Field. The Hanifa is a Type 2 fractured reservoir characterized by a finely-crystalline carbonate matrix which contains most of the reservoir storage porosity, and a stylolitic fracture system which provides essential permeability. Comparisons of over 5000 fractures identified from core and borehole image data with open-hole log data showed that porosity is negatively correlated with fracture density and mechanical rock strength. From these relationships, it was possible to utilize additional wells where porosity log data was available to calculate fracture densities. These wells were used to generate matrix porosity and permeability as well as fracture density attributes in a 12-sequence, 29-layer geocellular model. The effect of structural curvature on fracture intensity in the reservoir was estimated by mapping the derivative of structural dip. Incorporation of structural curvature explained variations in well test behavior not predicted by initial estimates of fracture density from porosity alone. Resultant fracture permeabilities compared favorably with well-test derived productivity indices. Three-dimensional visualization of model attributes showed that a monotonous and low (<10 md) distribution of matrix-related permeability contrasts sharply with highly variable and relatively high (>50 md) permeabilities of the fracture system. Reliability of the geocellular model to predict fracture densities and associated permeabilities has been confirmed by subsequent drilling of high cost horizontal wells, and is being used in reservoir engineering and development drilling planning efforts.

  19. DISTRIBUTION AND RANGE OF RADIONUCLIDE SORPTION COEFFICIENTS IN A SAVANNAH RIVER SITE SUBSURFACE: STOCHASTIC MODELING CONSIDERATIONS

    SciTech Connect (OSTI)

    Kaplan, D.; et. al

    2010-01-11T23:59:59.000Z

    The uncertainty associated with the sorption coefficient, or K{sub d} value, is one of the key uncertainties in estimating risk associated with burying low-level nuclear waste in the subsurface. The objective of this study was to measure >648 K{sub d} values and provide a measure of the range and distribution (normal or log-normal) of radionuclide K{sub d} values appropriate for the E-Area disposal site, within the Savannah River Site, near Aiken South Carolina. The 95% confidence level for the mean K{sub d} was twice the mean in the Aquifer Zone (18-30.5 m depth), equal to the mean for the Upper Vadose Zone (3.3-10 m depth), and half the mean for the Lower Vadose Zone (3.10-18 m depth). The distribution of K{sub d} values was log normal in the Upper Vadose Zone and Aquifer Zone, and normal in the Lower Vadose Zone. To our knowledge, this is the first report of natural radionuclide Kd variability in the literature. Using ranges and distribution coefficients that are specific to the hydrostratigraphic unit improved model accuracy and reduced model uncertainty. Unfortunately, extension of these conclusions to other sites is likely not appropriate given that each site has its own sources of hydrogeological variability. However, this study provides one of the first examples of the development stochastic ranges and distributions of K{sub d} values for a hydrological unit for stochastic modeling.

  20. Information percolation for the Ising model: cutoff in three dimensions up to criticality

    E-Print Network [OSTI]

    Eyal Lubetzky; Allan Sly

    2014-07-08T23:59:59.000Z

    We introduce a new framework for analyzing Glauber dynamics for the Ising model. The traditional approach for obtaining sharp mixing results has been to appeal to estimates on spatial properties of the stationary measure from within a multi-scale analysis of the dynamics. Here we propose to study these simultaneously by examining "information percolation" clusters in the space-time slab. Using this framework, we obtain new results for the Ising model on $(\\mathbb{Z}/n\\mathbb{Z})^d$ throughout the high temperature regime: total-variation mixing exhibits cutoff with an $O(1)$-window around the time at which the magnetization is the square-root of the volume. (Previously, cutoff in the full high temperature regime was only known for $d\\leq 2$, and only with an $O(\\log\\log n)$-window.) Furthermore, the new framework opens the door to understanding the effect of the initial state on the mixing time. We demonstrate this on the 1D Ising model, showing that starting from the uniform ("disordered") initial distribution asymptotically halves the mixing time, whereas almost every deterministic starting state is asymptotically as bad as starting from the ("ordered") all-plus state.