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Title: Structural evolution of three geopressured-geothermal areas in the Texas Gulf Coast

Abstract

Detailed analysis of geological and seismic data from several geopressured geothermal areas (Cuero, Blessing, Pleasant Bayou) reveals similarities in structural-stratigraphic relationships that form geopressured aquifers as well as differences in structural complexity and evolution that characterize the different areas. In these examples, geopressured sandstones are isolated on the updip side by downfaulting against shelf-slope shales, and on the downdip side by upfaulting against transgressive marine shales. Moreover, they are isolated above and below by thick sequences of transgressive shale or interbedded sandstone and shale. Prospective reservoirs are found where delatic and associated sandstones (distributary channel, delta front, barrie-strandplain) were deposited seaward of major growth faults and near the shelf margin. Structural development in these areas began with rapid movement of relatively straight to sinuous down-to-the basin growth faults with narrow to wide spacings and varying amounts of rollover. Later structural movement was characterized by continued but slower movement of most growth faults. In the Pleasant Bayou area, late salt diapirism superimposed a dome-and-withdrawal-basin pattern on the earlier growth-fault style.

Authors:
; ;
Publication Date:
Research Org.:
Texas Univ., Austin (USA). Bureau of Economic Geology
OSTI Identifier:
6206598
Report Number(s):
CONF-811026-9
ON: DE81029799
DOE Contract Number:  
AC08-79ET27111
Resource Type:
Conference
Resource Relation:
Conference: 5. geopressured-geothermal energy conference, Baton Rouge, LA, USA, 13 Oct 1981
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOPRESSURED SYSTEMS; GEOLOGY; GEOLOGIC FAULTS; GEOLOGIC STRUCTURES; GEOTHERMAL FLUIDS; GULF COAST; RESERVOIR ROCK; SEISMIC SURVEYS; STRATIGRAPHY; TEXAS; ENERGY SYSTEMS; FLUIDS; GEOPHYSICAL SURVEYS; NORTH AMERICA; SOUTHWEST REGION; SURVEYS; USA; Geothermal Legacy; 150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)

Citation Formats

Winker, C D, Morton, R A, and Garcia, D D. Structural evolution of three geopressured-geothermal areas in the Texas Gulf Coast. United States: N. p., 1981. Web.
Winker, C D, Morton, R A, & Garcia, D D. Structural evolution of three geopressured-geothermal areas in the Texas Gulf Coast. United States.
Winker, C D, Morton, R A, and Garcia, D D. 1981. "Structural evolution of three geopressured-geothermal areas in the Texas Gulf Coast". United States. https://www.osti.gov/servlets/purl/6206598.
@article{osti_6206598,
title = {Structural evolution of three geopressured-geothermal areas in the Texas Gulf Coast},
author = {Winker, C D and Morton, R A and Garcia, D D},
abstractNote = {Detailed analysis of geological and seismic data from several geopressured geothermal areas (Cuero, Blessing, Pleasant Bayou) reveals similarities in structural-stratigraphic relationships that form geopressured aquifers as well as differences in structural complexity and evolution that characterize the different areas. In these examples, geopressured sandstones are isolated on the updip side by downfaulting against shelf-slope shales, and on the downdip side by upfaulting against transgressive marine shales. Moreover, they are isolated above and below by thick sequences of transgressive shale or interbedded sandstone and shale. Prospective reservoirs are found where delatic and associated sandstones (distributary channel, delta front, barrie-strandplain) were deposited seaward of major growth faults and near the shelf margin. Structural development in these areas began with rapid movement of relatively straight to sinuous down-to-the basin growth faults with narrow to wide spacings and varying amounts of rollover. Later structural movement was characterized by continued but slower movement of most growth faults. In the Pleasant Bayou area, late salt diapirism superimposed a dome-and-withdrawal-basin pattern on the earlier growth-fault style.},
doi = {},
url = {https://www.osti.gov/biblio/6206598}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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