Shale mineralogy and burial diagenesis of Frio and Vicksburg Formations in two geopressured wells, McAllen Ranch area, Hidalgo County, Texas

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6309443

Freed, R L

Thirty-six shale samples ranging in depth from 1454 ft to 13,430 ft from Shell Oil Company No. 1 Dixie Mortgage Loan well and 33 shale samples ranging in depth from 2183 ft to 13,632 ft from Shell Oil/Delhi-Taylor Oil Corporation No. 3 A.A. McAllen well were examined by x-ray techniques to determine the mineralogical parameters of the geopressured zone in the Vicksburg Fairway. Both wells have the same weight-percent trends with depth for the mineralogy: quartz, calcite, total clay, and potassium feldspar are constant; plagioclase feldspar gradually increases; kaolinite increases; discrete illite decreases; total mixed-layer illite-smectite (I/S) decreases; illite in mixed-layer I/S increases; and smectite in mixed-layer I/S decreases. Chlorite is found only in the geopressured zone of each well.

• Research Organization: Trinity Univ., San Antonio, TX (USA)
• DOE Contract Number: AC08-79ET27111
• OSTI ID: 6309443
• Report Number(s): CONF-811021-1; ON: DE81026014
• Resource Relation: Conference: 31. annual meeting of the Gulf Coast Association of Geological Societies, Corpus Christi, TX, USA, 21 Oct 1981
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
GEOPRESSURED SYSTEMS
MINERALOGY
SHALES
CHEMICAL COMPOSITION
CALCITE
CHLORITE MINERALS
CLAYS
DIAGENESIS
FELDSPARS
GEOTHERMAL WELLS
ILLITE
KAOLINITE
POTASSIUM COMPOUNDS
QUARTZ
SAMPLING
SMECTITE
TEXAS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
ENERGY SYSTEMS
MINERALS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
ROCKS
SEDIMENTARY ROCKS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SOUTHWEST REGION
USA
WELLS
Geothermal Legacy
150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)