Hydropressure tongues within regionally geopressured lower Tuscaloosa sandstone, Tuscaloosa trend, Louisiana

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5868454

McCulloh, R P; Purcell, M D

A regional study of the Tuscaloosa Formation in Louisiana, undertaken to assess geopressured-geothermal potential, revealed lobate, downdip extensions of the hydropressured zone in lower Tuscaloosa massive sandstone facies below the regional top of geopressure. Normal pressure zones within geopressured section were identified by drilling mud weights less than 13 pounds per gallon on electric logs of massive lower Tuscaloosa sandstone, and cross sections demonstrated updip continuity of these zones with the regional hydropressured zone. These hydropressure tongues are permitted by the anomalously high permeabilities reportd from the deep Tuscaloosa trend which have been attributed to both primary and secondary porosity. The hydropressure tongues correspond with lobes of thick net sandstone, principally in Pointe Coupee, East Feliciana, East Baton Rouge, and Livingston Parishes in the central Tuscaloosa trend. Limited control suggests at least one hydropressure tongue in the Chandeleur Sound area to the east.

• Research Organization: Louisiana Geological Survey, Baton Rouge (USA)
• DOE Contract Number: AC08-81NV10174
• OSTI ID: 5868454
• Report Number(s): CONF-8310142-1; ON: DE83016759
• Resource Relation: Conference: Annual conference of Gulf Coast Association of Geological Societies, Jackson, MS, USA, 24 Oct 1983; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
GEOPRESSURED SYSTEMS
GEOLOGY
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
LOUISIANA
PERMEABILITY
SANDSTONES
ENERGY SYSTEMS
FEDERAL REGION VI
GEOLOGIC STRUCTURES
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
USA
Geothermal Legacy
150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)