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Some considerations on resource evaluation of The Geysers

Conference ·
OSTI ID:5417144
; ;
Although large amounts of data have been collected at The Geysers, some reservoir parameters, such as initial liquid saturation, matrix permeability and the fracture network characteristics, are still poorly known. These parameters greatly affect results of resource evaluation and predictions of reservoir behavior. Several two-dimensional fractured porous medium models have been developed for The Geysers; these models differ in assumptions regarding the initial liquid saturation and matrix permeabilities. These models indicate that the permeability-thickness product (kH) of the fracture network ranges from 10 to 75 Dm (30,000 to 225,000 md{center dot}ft) and matrix permeability ranges from 1 to 3 {mu}Darcies ({mu}D). All three models yielded surprisingly similar predictions regarding the future generating capacities of different areas. 17 refs., 6 figs.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
Sponsoring Organization:
CASLC; DOE/CE
DOE Contract Number:
AC03-76SF00098
OSTI ID:
5417144
Report Number(s):
LBL-27598; CONF-891031--9; ON: DE90002119
Country of Publication:
United States
Language:
English

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Related Subjects

15 GEOTHERMAL ENERGY
150100* -- Geothermal Energy-- Resources & Availability
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CHEMISTRY
COMPILED DATA
DATA
DATA ACQUISITION
ELECTRIC POWER
ENERGY
ENERGY SOURCES
FORECASTING
FRACTURE PROPERTIES
GEOCHEMISTRY
GEOTHERMAL ENERGY
GEYSERS
GRAYWACKE
Geothermal Legacy
HISTORICAL ASPECTS
HOT SPRINGS
INFORMATION
LITHOLOGY
MAPPING
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
NUMERICAL DATA
PERFORMANCE TESTING
PERMEABILITY
PLANNING
POROSITY
POWER
POWER GENERATION
PRESSURE MEASUREMENT
RECOMMENDATIONS
RENEWABLE ENERGY SOURCES
RESEARCH PROGRAMS
RESOURCE ASSESSMENT
ROCK MECHANICS
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
TESTING
THERMAL SPRINGS
WATER SPRINGS