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Geothermal Resource Assessment Through Well Testing And Production Response Modelling
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Book Synopsis Geothermal Resource Assessment Through Well Testing and Production Response Modelling by : Daher Elmi Houssein
Download or read book Geothermal Resource Assessment Through Well Testing and Production Response Modelling written by Daher Elmi Houssein and published by . This book was released on 2008 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Well Test Analysis by : Sadiq J. Zarrouk
Download or read book Geothermal Well Test Analysis written by Sadiq J. Zarrouk and published by Academic Press. This book was released on 2019-04-30 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geothermal Well Test Analysis: Fundamentals, Applications and Advanced Techniques provides a comprehensive review of the geothermal pressure transient analysis methodology and its similarities and differences with petroleum and groundwater well test analysis. Also discussed are the different tests undertaken in geothermal wells during completion testing, output/production testing, and the interpretation of data. In addition, the book focuses on pressure transient analysis by numerical simulation and inverse methods, also covering the familiar pressure derivative plot. Finally, non-standard geothermal pressure transient behaviors are analyzed and interpreted by numerical techniques for cases beyond the limit of existing analytical techniques. Provides a guide on the analysis of well test data in geothermal wells, including pressure transient analysis, completion testing and output testing Presents practical information on how to avoid common issues with data collection in geothermal wells Uses SI units, converting existing equations and models found in literature to this unit system instead of oilfield units
Book Synopsis Geothermal Resource Assessment by : Jaime Jose D Quinao
Download or read book Geothermal Resource Assessment written by Jaime Jose D Quinao and published by . This book was released on 2015 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Well Testing in Geothermal Resource Assessment by : Uwera Rutagarama
Download or read book The Role of Well Testing in Geothermal Resource Assessment written by Uwera Rutagarama and published by . This book was released on 2012 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Reservoir Engineering by : Malcolm Alister Grant
Download or read book Geothermal Reservoir Engineering written by Malcolm Alister Grant and published by Academic Press. This book was released on 2011-04-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: As nations alike struggle to diversify and secure their power portfolios, geothermal energy, the essentially limitless heat emanating from the earth itself, is being harnessed at an unprecedented rate. For the last 25 years, engineers around the world tasked with taming this raw power have used Geothermal Reservoir Engineering as both a training manual and a professional reference. This long-awaited second edition of Geothermal Reservoir Engineering is a practical guide to the issues and tasks geothermal engineers encounter in the course of their daily jobs. The book focuses particularly on the evaluation of potential sites and provides detailed guidance on the field management of the power plants built on them. With over 100 pages of new material informed by the breakthroughs of the last 25 years, Geothermal Reservoir Engineering remains the only training tool and professional reference dedicated to advising both new and experienced geothermal reservoir engineers. - The only resource available to help geothermal professionals make smart choices in field site selection and reservoir management - Practical focus eschews theory and basics- getting right to the heart of the important issues encountered in the field - Updates include coverage of advances in EGS (enhanced geothermal systems), well stimulation, well modeling, extensive field histories and preparing data for reservoir simulation - Case studies provide cautionary tales and best practices that can only be imparted by a seasoned expert
Book Synopsis Development, Analysis, and Application of a Well by Well Method for Estimating Surface Heat Flow for Regional Geothermal Resource Assessment by : George Raymond Stutz
Download or read book Development, Analysis, and Application of a Well by Well Method for Estimating Surface Heat Flow for Regional Geothermal Resource Assessment written by George Raymond Stutz and published by . This book was released on 2012 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential to utilize widespread low-grade geothermal resources of the Northeastern U.S. for thermal direct use and combined heat and power applications can be realized using technologies embodied in Enhanced Geothermal Systems (EGS). In lower grade regions, accurate knowledge of small variations in temperature gradient will be crucial to the economic viability of EGS development. To accurately map local temperature variations, resource assessments have relied largely on bottom hole temperature (BHT) measurements, primarily from oil and gas wells. As the volume of BHT data grows due to increased drilling activity, the ability to quickly analyze and incorporate additional data is critical. To accomplish this task, a thermal model was developed that is a refined and streamlined version of work previously started at Southern Methodist University (SMU) to map out the heat flow of the entire nation. The model developed for this work expands on their contributions and makes it much easier to incorporate the large amounts of data collected. Also, by being developed in Visual Basic for Applications, an Excel add-on, it is hoped that the model will help researchers at all levels of academia, government, and private industry look to EGS as a possible energy source. In order to facilitate EGS project placement and design, the model was used to draw a more complete picture of geothermal resources in the Northeastern United States, with a particular focus on New York and Pennsylvania, by incorporating thousands of new temperature-depth data collected as a result of continuing drilling for unconventional natural gas in the region. This project follows the entire evolution of an organic geothermal resource study from data collection to map production. Well data in the form of archived oil and gas well logs were collected from SMU, the Pennsylvania Geological Survey, the New York State Museum, and the New York State Department of Environ- mental Conservation. Using these new data, a series of maps covering the Appalachian Basin of New York and Pennsylvania were produced that show variations in subsurface thermal gradient and surface heat flow. The increased spatial accuracy and resolution compared to earlier geothermal maps of the Northeast U.S. illuminate better spatial variations in the resource quality and have a much smaller degree of uncertainty in both extent and magnitude. The maps indicate that the temperatures required for direct-use applications are available at technically viable drilling depths over a majority of the region. Smaller hot spot areas of higher than average heat flow are found in the Pennsylvania counties of Indiana, McKean, Lawrence, and Warren, as well as Cayuga County in New York. These anomalies represent the most ideal candidates for further exploration and characterization of their EGS potential. The model was then subjected to rigorous uncertainty analysis using Oracle Crystal Ball, a commercially available Monte Carlo simulator. This work integrated increasing complexity in the sedimentary cover of the Appalachian basin to test the precision of the predicted temperature at 6 km under Steuben County, NY. The results indicate that while the model does have inherent limitations that the user must be mindful of, it predicts temperature to a degree of precision and accuracy that is reasonable given its original purpose of incorporating very large datasets in an efficient manner.
Book Synopsis Well Test Analysis and Reservoir Modeling of Geopressured-geothermal Systems (includes Topical Reports on Analyses for by :
Download or read book Well Test Analysis and Reservoir Modeling of Geopressured-geothermal Systems (includes Topical Reports on Analyses for written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Automated inversion of pressure transient data from the Pleasant Bayou and Gladys McCall geopressured test wells has allowed the resolution of several outstanding questions concerning the two reservoirs. The added accuracy of the interpretation of the various data sets from each well provides convincing evidence that the formation response of each of the reservoirs behaved in an essentially linear fashion throughout its multi-year depletion/recovery test history. The only exception was in the immediate vicinity of the sandface; the skin factor in each of the wells varies during the course of its test history (see Appendices for detailed discussions of the variations and the likely causes of the variations for each well). (a) The six bottomhole pressure transient tests of Pleasant Bayou Well No. 2 over a twelve year period (1980-1992) yield estimates for the permeability-thickness product that are in excellent agreement (kh = 3.665 D-m). Inversion of the 45-day buildup portion of the 1980 RLT yields an estimate of X{sub a} = 869 m as the distance from the well to the nearest boundary. The inversion of the data from the other five tests, of much shorter duration, yield estimates in the range X{sub a} = 427-503 m. The RLT estimate would normally be given much more credence. The failure, repair and resetting of the gauge after the first ten days of the start of the buildup test, however, may have affected the RLT data. Calculations are employed to estimate bottomhole pressures from surface recordings subsequent to removal of the bottomhole gauge following the 1992 70-hr buildup test. These estimated values were combined with the 70-hr data to form the 111-day (from September 12, 1992 through January 1, 1993) LTT buildup test data set. The LTT data were inverted to yield an estimate of X{sub a} = 452 m. Since this is in agreement with the range of estimates from the five short-term bottomhole test, we believe the range X{sub a} = 427-503 m to represent the best estimate for the distance from the well to the nearest boundary. The simulation model presented in Appendix B used L1 = 990 m (Figure 3 in Appendix B) as the distance from the test well to the nearest boundary. The simulation model could probably be improved using a smaller value for L1. The actual location of the boundary to the south of the well is not known from the available geological information. (b) The five bottomhole pressure transient tests of Gladys McCall Well No. 2 over an eight-year period (1983-1991) yield estimates for the permeability-thickness product that differ significantly from each other. The differences, however, can be explained by the partial plugging of the near-well formation during an aborted attempt to inject a scale-inhibitor pill in May 1985, followed by subsequent scouring out the pill precipitates by the flowing fluid during the May 1985-August 1987 production testing. The partial plugging of the near-well formation in conjunction with a known shale stringer that prevents vertical communication in sand 8 (Figure 2 in Appendix A) would reduce the apparent value of kh to about sixty percent of the original RLT value of 13.44 D-m. Inversion of the 79-hr (1985) and 92-hr (1986) buildup tests yield kh estimates of 7.69 and 8.86 D-m, respectively. Inversions of the valid MRT (1987) and FDT (1991) pressure transient data yield estimates very near the original RLT value. The reinterpretation of the MRT data represents a correction of our earlier conclusion (in Appendix A); we now believe that the data from the first and second gauges employed during the MRT are incompatible. Data from the first (''old'') gauge during the drawdown portion of the MRT could not be adequately corrected for the observed drift in the recorded data. Only the second (''new'') gauge data are considered reliable and inversion of the buildup data it recorded yields the estimate for kh that is in agreement with estimates obtained from inversion of the RLT and FDT pressure transient data.
Download or read book Geothermal Energy Update written by and published by . This book was released on 1978 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Well Test Analysis and Improved Models for Geopressured-Geothermal Systems by :
Download or read book Well Test Analysis and Improved Models for Geopressured-Geothermal Systems written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In accordance with the S-CUBED Subcontract Work Statement, S-CUBED has concentrated on the synthesis, correlation and analysis of all pertinent data from the Department of Energy (DOE) geopressured-geothermal research wells undergoing testing during the contract period. This work has included the development of reservoir simulation models for the geopressured-geothermal resource in hydrological connection with each well. Existing S-CUBED simulation techniques have been applied to develop, update and improve the models for the reservoirs tested. During the contract period, data have been available from the Gladys McCall, Pleasant Bayou and Hulin test wells. S-CUBED has also contributed to the design of the well tests and participated in DOE's planning and review meetings in support of the geopressured-geothermal program. Detailed technical Topical Reports have been prepared and issued as appropriate during the contract period as referenced in the following summary of the work performed during the final year of the S-CUBED Subcontract to UTA.
Book Synopsis Evaluation of geothermal energy exploration and resource assessment by : United States. Department of Energy. Division of Geothermal Energy
Download or read book Evaluation of geothermal energy exploration and resource assessment written by United States. Department of Energy. Division of Geothermal Energy and published by . This book was released on 1978 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Power Generation by : Ronald DiPippo
Download or read book Geothermal Power Generation written by Ronald DiPippo and published by Elsevier. This book was released on 2024-10-11 with total page 977 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geothermal Power Generation, New Developments and Innovations, Second Edition provides an update to the advanced energy technologies that are urgently required to meet the challenges of economic development, climate change mitigation, and energy security. Edited by respected and leading experts in the field, this book provides a comprehensive overview of the major aspects of geothermal power production. Chapters cover resource discovery, resource characterization, energy conversion systems, design, economic considerations, and a range of fascinating and updated case studies from across the world.Geothermal resources are considered renewable and are currently the only renewable source able to generate baseload electricity while producing very low levels of greenhouse gas emissions, thus playing a key role in future energy needs. - Provides readers with a comprehensive and systematic overview of geothermal power generation - Presents an update to advanced energy technologies that are urgently required to meet the challenges of economic development, climate change mitigation, and energy security - Edited by authorities in the field and contributed to by global experts in their areas - Supports sustainability and the United Nations Sustainable Development Goals (UN SDGs) 7, 9, 11 and 13
Book Synopsis The Production Test and Resource Assessment of the Southhampton (Western Esplanade) Geothermal Well by : D. J. Allen
Download or read book The Production Test and Resource Assessment of the Southhampton (Western Esplanade) Geothermal Well written by D. J. Allen and published by . This book was released on 1983 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Engineering and Economic Assessment of Geothermal Resources by :
Download or read book Engineering and Economic Assessment of Geothermal Resources written by and published by . This book was released on 1987 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Assessment of the Glerardalur and Svartsengi Fields by : UNU Geothermal Training Programme (Iceland)
Download or read book Geothermal Assessment of the Glerardalur and Svartsengi Fields written by UNU Geothermal Training Programme (Iceland) and published by . This book was released on 1992 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gulf Coast Programmatic Environmental Assessment Geothermal Well Testing by :
Download or read book Gulf Coast Programmatic Environmental Assessment Geothermal Well Testing written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In accordance with the requirements of 10 CFR Part 711, environmental assessments are being prepared for significant activities and individual projects of the Division of Geothermal Energy (DGE) of the Energy Research and Development Administration (ERDA). This environmental assessment of geopressure well testing addresses, on a regional basis, the expected activities, affected environments, and possible impacts in a broad sense. The specific part of the program addressed by this environmental assessment is geothermal well testing by the take-over of one or more unsuccessful oil wells before the drilling rig is removed and completion of drilling into the geopressured zone. Along the Texas and Louisiana Gulf Coast (Plate 1 and Overlay) water at high temperatures and high pressures is trapped within Gulf basin sediments. The water is confined within or below essentially impermeable shale sequences and carries most or all of the overburden pressure. Such zones are referred to as geopressured strata. These fluids and sediments are heated to abnormally high temperatures (up to 260 C) and may provide potential reservoirs for economical production of geothermal energy. The obvious need in resource development is to assess the resource. Ongoing studies to define large-sand-volume reservoirs will ultimately define optimum sites for drilling special large diameter wells to perform large volume flow production tests. In the interim, existing well tests need to be made to help define and assess the resource. The project addressed by this environmental assessment is the performance of a geothermal well test in high potential geothermal areas. Well tests involve four major actions each of which may or may not be required for each of the well tests. The four major actions are: site preparation, drilling a salt-water disposal well, actual flow testing, and abandonment of the well.
Book Synopsis Pressure Transient Analysis of Geothermal Wells: a Numerical Modelling Approach by : Penelope Kate (Katie) McLean
Download or read book Pressure Transient Analysis of Geothermal Wells: a Numerical Modelling Approach written by Penelope Kate (Katie) McLean and published by . This book was released on 2020 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
