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Title: Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas

Abstract

Twenty-three shale samples ranging in depth from 5194 ft to 13,246 ft from Gulf Oil Corporation No. 2 Texas State Lease 53034 well and 33 shale samples ranging in depth from 2185 ft to 15,592 ft from General Crude Oil Company/Department of Energy No. 1 Pleasant Bayou well were examined by x-ray techniques to determine the mineralogy of the geopressured zone in the Brazoria Fairway. Both wells have similar weight-percent trends with depth for a portion of the mineralogy. Calcite decreases, and plagioclase, quartz and total clay increase slightly. Within the clays, illite in mixed-layer illite/smectite (I/S) increases and smectite in mixed-layer I/S decreases. Four minerals have distinctly different trends with depth for each well. In the No. 2 Texas State Lease 53034 well, potassium feldspar and mixed-layer I/S decrease, kaolinite increases, and discrete illite is constant. In the No. 1 Pleasant Bayou well, potassium feldspar and kaolinite are constant, mixed-layer I/S increases, and discrete illite decreases.

Authors:
Publication Date:
Research Org.:
Trinity Univ., San Antonio, TX (USA)
OSTI Identifier:
5053149
Report Number(s):
CONF-821009-1
ON: DE82016166
DOE Contract Number:  
AC08-79ET27111
Resource Type:
Conference
Resource Relation:
Conference: 32. annual meeting of the Gulf Coast Association of Geological Societies, Houston, TX, USA, 26 Oct 1982
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOPRESSURED SYSTEMS; GEOLOGIC HISTORY; MINERALOGY; TEXAS; ANORTHOSITES; CALCITE; CLAYS; GEOLOGIC DEPOSITS; GEOLOGIC FORMATIONS; ILLITE; KAOLINITE; QUARTZ; SHALES; SMECTITE; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ALUMINIUM SILICATES; CALCIUM CARBONATES; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATE MINERALS; CARBONATES; CHALCOGENIDES; ENERGY SYSTEMS; FEDERAL REGION VI; GABBROS; IGNEOUS ROCKS; MINERALS; NORTH AMERICA; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIC ROCKS; ROCKS; SEDIMENTARY ROCKS; SILICATE MINERALS; SILICATES; SILICON COMPOUNDS; SILICON OXIDES; USA; Geothermal Legacy; 150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)

Citation Formats

Freed, R L. Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas. United States: N. p., 1982. Web.
Freed, R L. Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas. United States.
Freed, R L. 1982. "Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas". United States. https://www.osti.gov/servlets/purl/5053149.
@article{osti_5053149,
title = {Clay mineralogy and depositional history of the Frio Formation in two geopressured wells, Brazoria County, Texas},
author = {Freed, R L},
abstractNote = {Twenty-three shale samples ranging in depth from 5194 ft to 13,246 ft from Gulf Oil Corporation No. 2 Texas State Lease 53034 well and 33 shale samples ranging in depth from 2185 ft to 15,592 ft from General Crude Oil Company/Department of Energy No. 1 Pleasant Bayou well were examined by x-ray techniques to determine the mineralogy of the geopressured zone in the Brazoria Fairway. Both wells have similar weight-percent trends with depth for a portion of the mineralogy. Calcite decreases, and plagioclase, quartz and total clay increase slightly. Within the clays, illite in mixed-layer illite/smectite (I/S) increases and smectite in mixed-layer I/S decreases. Four minerals have distinctly different trends with depth for each well. In the No. 2 Texas State Lease 53034 well, potassium feldspar and mixed-layer I/S decrease, kaolinite increases, and discrete illite is constant. In the No. 1 Pleasant Bayou well, potassium feldspar and kaolinite are constant, mixed-layer I/S increases, and discrete illite decreases.},
doi = {},
url = {https://www.osti.gov/biblio/5053149}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}

Conference:
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