Factors controlling reservoir quality in tertiary sandstones and their significance to geopressured geothermal production
Variable intensity of diagenesis is the factor primarily responsible for contrasting regional reservoir quality of Tertiary sandstones from the upper and lower Texas coast. Detailed comparison of Frio sandstone from the Chocolate Bayou/Danbury Dome area, Brazoria County, and Vicksburg sandstones from the McAllen Ranch Field area, Hidalgo County, reveals that extent of diagenetic modification is most strongly influenced by (1) detrital mineralogy and (2) regional geothermal gradients. The regional reservoir quality of Frio sandstones from Brazoria County is far better than that characterizing Vicksburg sandstones from Hidalgo County, especially at depths suitable for geopressured geothermal energy production. However, in predicting reservoir quality on a site-specific basis, locally variable factors such as relative proportions for porosity types, pore geometry as related to permeability, and local depositional environment must also be considered. Even in an area of regionally favorable reservoir quality, such local factors can significantly affect reservoir quality and, hence, the geothermal production potential of a specific sandstone unit.
- Research Organization:
- Texas Univ., Austin (US). Bureau of Economic Geology (US)
- Sponsoring Organization:
- Not Available (US)
- DOE Contract Number:
- AC08-79ET27111
- OSTI ID:
- 5097180
- Report Number(s):
- DOE/ET/27111-T3; ON: DE84010481
- Country of Publication:
- United States
- Language:
- English
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Factors controlling reservoir quality in tertiary sandstones and their significance to geopressured geothermal production. Annual report, May 1, 1979-May 31, 1980
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Related Subjects
15 GEOTHERMAL ENERGY
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHALCOGENIDES
DIAGENESIS
ENERGY SYSTEMS
FELDSPARS
GEOMETRY
GEOPRESSURED SYSTEMS
GEOTHERMAL ENERGY
GEOTHERMAL GRADIENTS
GEOTHERMAL LEGACY
KAOLINITE
MINERALOGY
MINERALS
MODIFICATIONS
NORTH AMERICA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POROSITY
PRESSURE GRADIENTS
PRODUCTION
QUARTZ
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
TEMPERATURE GRADIENTS
TEXAS
USA
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHALCOGENIDES
DIAGENESIS
ENERGY SYSTEMS
FELDSPARS
GEOMETRY
GEOPRESSURED SYSTEMS
GEOTHERMAL ENERGY
GEOTHERMAL GRADIENTS
GEOTHERMAL LEGACY
KAOLINITE
MINERALOGY
MINERALS
MODIFICATIONS
NORTH AMERICA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POROSITY
PRESSURE GRADIENTS
PRODUCTION
QUARTZ
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
TEMPERATURE GRADIENTS
TEXAS
USA