Brentwood oil and gas field, Contra Costa County, California
The Brentwood Field was discovered in June 1962. By December 1965, there were 50 producing wells in the field. Of these, 15 produced predominantly gas. The Paleocene and Cretaceous reservoir beds dip N. at a low angle and are truncated by a S.-dipping unconformity surface, which is overlain by a widespread ''Meganos gorge'' shale unit which provides the major updip trap of the oil and gas pools. The field is traversed by a series of NW.-striking normal faults. Thinly bedded Upper Martinez sandstone stringers, known as the ''Heidorn'' and ''Ginochio'' sands, are about 500-800 ft above the First Massive Martinez and produce essentially dry gas with only minor quantities of condensate. Recent production from the field has been approximately 2,000 bbl of oil and 10 MMcf of gas a day. Several gas wells that are completed in gas caps underlain by oil columns have been shut in to conserve reservoir energy. The btu values range from 1,050 to more than 1,200. By the end of 1965, the field has produced approximately 2,300,000 bbl of oil and 13,000 MMcf of gas.
- Research Organization:
- Brazos Oil and Gas Co.
- OSTI ID:
- 6093526
- Journal Information:
- Mem. - Am. Assoc. Pet. Geol.; (United States), Journal Name: Mem. - Am. Assoc. Pet. Geol.; (United States) Vol. 1:9; ISSN MAPGA
- Country of Publication:
- United States
- Language:
- English
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CALIFORNIA
CENOZOIC ERA
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC STRUCTURES
GEOLOGY
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH AMERICA
OIL FIELDS
PETROLEUM
PETROLEUM DEPOSITS
PRODUCTION
RESOURCES
ROCKS
SAND
SANDSTONES
SEDIMENTARY ROCKS
SHALES
TERTIARY PERIOD
USA
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