Numerical modeling and interpretation of dipole-dipole resistivity and IP profiles Cove Fort-Sulphurdale KGRA, Utah
The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located near the junction of the Pavant Range and the Tushar Mountains in south-central Utah. The area has been the site of an intensive geothermal exploration effort since 1975. The electrical resistivity data obtained by Union Oil Company and a subsequent survey conducted for the Earth Science Laboratory and a detailed numerical interpretation of both data sets are presented. The detailed modeling permits a characterization of the intrinsic electrical resistivity to depths exceeding 2000 feet. An area of over two square miles with bulk in-situ resistivities of four-to-five ohm-m is delineated at Sulphurdale near the Union Oil Co. well CFSU No. 42-7. The low-resistivities rocks define the area of extensive hydrothermal alteration in response to the presence of clay minerals and conductive thermal fluids. In contrast the area north and east of Cove Fort is typified by high (100-300 ohm-m) resistivities to depths exceeding 2000 feet. This is an area of Cretaceous and Paleozoic sedimentary rocks where two attempts to drill to reservoir depth failed because of extreme drilling problems. The high resistivities are not considered encouraging for the presence of a deeper reservoir. The electrical resistivity interpretation has defined several areas of probable upward migration of thermal fluids along north-trending normal faults. Some of these areas may have potential for direct heat geothermal utilization.
- Research Organization:
- Utah Univ., Salt Lake City (USA). Research Inst.
- OSTI ID:
- 5653864
- Report Number(s):
- DOE/ET/28392-37
- Country of Publication:
- United States
- Language:
- English
Similar Records
Geothermal reservoir assessment: Cove Fort-Sulphurdale Unit. Final report, September 1977-July 1979
The Cove Fort-Sulphurdale KGRA, a geologic and geophysical case study
Related Subjects
CLAYS
ELECTRIC LOGGING
ELECTRICAL SURVEYS
EXPLORATION
GEOPHYSICAL SURVEYS
GEOTHERMAL EXPLORATION
Geothermal Legacy
HYDROTHERMAL ALTERATION
INDUCED POLARIZATION LOGGING
KGRA
MINERALS
NORTH AMERICA
RESISTIVITY SURVEYS
ROCKS
ROCKY MOUNTAIN REGION
SEDIMENTARY ROCKS
SURVEYS
USA
UTAH
WELL LOGGING