WorldCat Identities

Stanford Geothermal Program (U.S.)

Overview
Works: 108 works in 140 publications in 1 language and 347 library holdings
Genres: Conference papers and proceedings 
Roles: Researcher
Classifications: TJ280.7, 621
Publication Timeline
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Most widely held works about Stanford Geothermal Program (U.S.)
 
Most widely held works by Stanford Geothermal Program (U.S.)
Proceedings ... Workshop Geothermal Reservoir Engineering by Workshop on Geothermal Reservoir Engineering( )

in English and held by 29 WorldCat member libraries worldwide

Proceedings of the eighth workshop on geothermal reservoir engineering by Workshop on Geothermal Reservoir Engineering( Book )

3 editions published between 1982 and 1983 in English and held by 5 WorldCat member libraries worldwide

Thermodynamic and hydrodynamic properties of hydrothermal systems( Book )

2 editions published in 1974 in English and held by 4 WorldCat member libraries worldwide

Proceedings of the seventh workshop on geothermal-reservoir engineering( )

1 edition published in 1981 in English and held by 0 WorldCat member libraries worldwide

Thirty-three papers are included. Two were abstracted for EDB previously. Separate abstracts were prepared for thirty-one
Analysis of tracer and thermal transients during reinjection( )

2 editions published in 1989 in English and held by 0 WorldCat member libraries worldwide

This work studied tracer and thermal transients during reinjection in geothermal reserviors and developed a new technique which combines the results from interwell tracer tests and thermal injection-backflow tests to estimate the thermal breakthrough times. Tracer tests are essential to determine the degree of connectivity between the injection wells and the producing wells. To analyze the tracer return profiles quantitatively, we employed three mathematical models namely, the convection-dispersion (CD) model, matrix diffusion (MD) model, and the Avodnin (AD) model, which were developed to study tracer and heat transport in a single vertical fracture. We considered three types of tracer tests namely, interwell tracer tests without recirculation, interwell tracer tests with recirculation, and injection-backflow tracer tests. To estimate the model parameters, we used a nonlinear regression program to match tracer return profiles to the solutions
Geothermal Reservoir Engineering Research. Fourth annual report, October 1, 1983-September 30, 1984( )

1 edition published in 1984 in English and held by 0 WorldCat member libraries worldwide

Reservoir definition research consisted of well test analysis and bench-scale experiments. Well testing included both single-well pressure drawdown and buildup testing, and multiple-well interference testing. The development of new well testing methods continued to receive major emphasis during the year. Work included a project on multiphase compressibility, including the thermal content of the rock. Several projects on double-porosity systems were completed, and work was done on relative-permeability. Heat extraction from rock will determine the long-term response of geothermal reservoirs to development. The work in this task area involved a combination of physical and mathematical modeling of heat extraction from fractured geothermal reservoirs. International cooperative research dealt with adsorption of water on reservoir cores, the planning of tracer surveys, and an injection and tracer test in the Los Azufres fields. 32 refs
Proceedings fourth workshop geothermal reservoir engineering( )

1 edition published in 1978 in English and held by 0 WorldCat member libraries worldwide

Forty-three papers are included. Five papers were abstracted previously. Separate abstracts were prepared for thirty-eight. (MHR)
Stanford geothermal program. Final report, July 1990--June 1996( )

2 editions published in 1988 in English and held by 0 WorldCat member libraries worldwide

This annual report of the Stanford Geothermal Program presents major projects in reservoir and injection technology. The four include: (1) an application of the boundary element method to front tracking and pressure transient testing; (2) determination of fracture aperture, a multi-tracer approach; (3) an analysis of tracer and thermal transients during reinjection; and, (4) pressure transient modeling of a non-uniformly fractured reservoir. (BN)
Reservoir and injection technology geothermal reservoir engineering research at Stanford( )

2 editions published between 1988 and 1995 in English and held by 0 WorldCat member libraries worldwide

We report results of steam adsorption experiments conducted for rock samples from vapor-dominated geothermal reservoirs. We examine the effect of the temperature on the adsorption/desorption isotherms. We find that the temperature effect is only important on the desorption such that the hysteresis becomes more pronounced as the temperature increases. The scanning behavior within the steam sorption hysteresis loop is also studied to investigate the behavior during repressurization. Collection of sets of data on the sorption behavior of The Geysers geothermal field in California is presented
Geothermal direct-heat utilization assistance by Don H White( )

6 editions published between 1992 and 1993 in English and held by 0 WorldCat member libraries worldwide

Results are reported on adsorption of water vapor on reservoir rocks, physics of injection of water into vapor-dominated geothermal reservoirs, earth-tide effects on downhole pressures, injection optimization at the Geysers, effects of salinity in adsorption experiments, interpreting multiwell pressure data from Ohaaki, and estimation of adsorption parameters from transient experiments
Stanford Geothermal Program quarterly technical report, January--March 1992( )

2 editions published in 1992 in English and held by 0 WorldCat member libraries worldwide

Progress is reported on the following: investigation of adsorption/desorption during reinjection at the Geysers, drawdown and buildup pressure analysis in multiwell reservoirs, adsorption of water vapor on reservoir rocks, and estimation of desorption parameters from experimental data. (MHR)
Pressure oscillations caused by momentum on shut in of a high rate well in a fractured formation( )

2 editions published in 1989 in English and held by 0 WorldCat member libraries worldwide

Pressure transient testing techniques are an important part of reservoir and production testing procedures. These techniques are frequently used to determine practical information about underground reservoirs such as the permeability, porosity, liquid content, reservoir and liquid discontinuities and other related data. This information is valuable in helping to analyze, improve and forecast reservoir performance. This report is concerned with developing models for pressure transient well testing in high permeability, high flow rate, naturally fractured reservoirs. In the present work, a study was made of the effects of liquid inertia in the fractures and the wellbore on the pressure response obtained during a well test. The effects of turbulent flow and multi-phase flow effects such as gravitational segregation or anisotropic porous media effects were not considered. The scope of the study was limited to studying inertial effects on the pressure response of a fractured reservoir
Stanford Geothermal Program (quarterly technical progress reports, July--September 1990 and October--December 1990)( )

2 editions published in 1991 in English and held by 0 WorldCat member libraries worldwide

For the summer quarter, progress is summarized and data are presented on the following: well test analysis of finite-conductivity fractures, theoretical investigation of adsorption phenomena, and optimization of reinjection strategy. For the fall quarter, activity focused on the adsorption and well testing projects. A new project investigating reinjection at the Geysers was initiated. (MHR)
Stanford Geothermal Program (quarterly technical report, July--September 1991)( )

5 editions published in 1991 in English and held by 0 WorldCat member libraries worldwide

The reinjection task on optimizing injection into the Palinpinon geothermal field in the Philippines was completed. Progress is summarized on experimental investigation of absorption, estimation of adsorption parameters from experimental and field data, the theoretical study of adsorption isotherms, and interpreting pressure data. (MHR)
Comparison of pressure transient response in intensely and sparsely fractured reservoirs( )

2 editions published in 1989 in English and held by 0 WorldCat member libraries worldwide

A comprehensive analytical model is presented to study the pressure transient behavior of a naturally fractured reservoir with a continuous matrix block size distribution. Geologically realistic probability density functions of matrix block size are used to represent reservoirs of varying fracture intensity and uniformity. Transient interporosity flow is assumed and interporosity skin is incorporated. Drawdown and interference pressure transient tests are investigated. The results show distinctions in the pressure response from intensely and sparsely fractured reservoirs in the absence of interporosity skin. Also, uniformly and nonuniformly fractured reservoirs exhibit distinct responses, irrespective of the degree of fracture intensity. The pressure response in a nonuniformly fractured reservoir with large block size variability, approaches a nonfractured (homogeneous) reservoir response. Type curves are developed to estimate matrix block size variability and the degree of fracture intensity from drawdown and interference well tests
Transient adsorption experiment Salinity and noncondensible gas effects. Quarterly report, July--September 1993( )

1 edition published in 1993 in English and held by 0 WorldCat member libraries worldwide

The purpose of this project is to analyze the adsorption and desorption of steam in geothermal reservoirs, considering the effects of dissolved salts and of noncondensible gases. This report details activities during the gases. This report details activities during the reporting period of July through September 1993
Adsorption of water vapor on reservoir rocks. First quarterly report, January--March 1993( )

2 editions published in 1993 in English and held by 0 WorldCat member libraries worldwide

Progress is reported on: adsorption of water vapor on reservoir rocks; theoretical investigation of adsorption; estimation of adsorption parameters from transient experiments; transient adsorption experiment -- salinity and noncondensible gas effects; the physics of injection of water into, transport and storage of fluids within, and production of vapor from geothermal reservoirs; injection optimization at the Geysers Geothermal Field; a model to test multiwell data interpretation for heterogeneous reservoirs; earth tide effects on downhole pressure measurements; and a finite-difference model for free surface gravity drainage well test analysis
Stimulation and reservoir engineering of geothermal resources. Second annual report, July 1, 1978-September 30, 1979( )

1 edition published in 1979 in English and held by 0 WorldCat member libraries worldwide

Individual projects are grouped under four main areas of study: energy extraction, bench-scale flow experiments, radon tracer techniques, and well test analysis. The energy extraction experiments concern the efficiency with which the in-place heat and fluids can be produced in the most economical manner. The bench-scale flow experiments cover the results of three models used to examine the properties of flow through porous media at elevated temperature and pressures. Random tracer techniques describe accelerated efforts to field test several geothermal reservoirs by both transient and transect test procedures. The well test analysis section describes several new developments: analysis of earth-tide effects, pressure transient analysis of multilayered systems, interference testing with storage and skin effects, determination of steam-water relative permeability from wellhead data, well test analysis for wells produced at constant pressure, the parallelepiped model, slug test DST analysis, and pressure transient behavior in naturally fractured reservoirs. (MHR)
Heat Extraction Project, geothermal reservoir engineering research at Stanford. Fourth annual report, January 1, 1988--December 1, 1988( )

2 editions published in 1989 in English and held by 0 WorldCat member libraries worldwide

The main objective of the SGP Heat Extraction Project is to provide a means for estimating the thermal behavior of geothermal fluids produced from fractured hydrothermal resources. The methods are based on estimated thermal properties of the reservoir components, reservoir management planning of production and reinjection, and the mixing of reservoir fluids: geothermal, resource fluid cooled by drawdown and infiltrating groundwater, and reinjected recharge heated by sweep flow through the reservoir formation. Several reports and publications, listed in Appendix A, describe the development of the analytical methods which were part of five Engineer and PhD dissertations, and the results from many applications of the methods to achieve the project objectives. The Heat Extraction Project is to evaluate the thermal properties of fractured geothermal resource and forecasted effects of reinjection recharge into operating reservoirs
Reservoir and injection technology and Heat Extraction Project. Fifth annual report, January 1, 1989--December 31, 1989( )

2 editions published in 1989 in English and held by 0 WorldCat member libraries worldwide

For the Stanford Geothermal Program in the fiscal year 1989, the task areas include predictive modeling of reservoir behavior and tracer test interpretation and testing. Major emphasis is in reservoir technology, reinjection technology, and heat extraction. Predictive modeling of reservoir behavior consists of a multi-pronged approach to well test analysis under a variety of conditions. The efforts have been directed to designing and analyzing well tests in (1) naturally fractured reservoirs; (2) fractured wells; (3) complex reservoir geometries; and, (4) gas reservoirs including inertial and other effects. The analytical solutions for naturally fractured reservoirs are determined using fracture size distribution. In the study of fractured wells, an elliptical coordinate system is used to obtain semi-analytical solutions to finite conductivity fractures. Effort has also been directed to the modeling and creation of a user friendly computer program for steam/gas reservoirs including wellbore storage, skin and non-Darcy flow effects. This work has a complementary effort on modeling high flow rate wells including inertial effects in the wellbore and fractures. In addition, work on gravity drainage systems is being continued
 
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Alternative Names
Geothermal Program

SGP

Stanford Geothermal Program

Stanford University Geothermal Program

Languages
English (46)