Oil and gas developments in West Coast area in 1981

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6414037

Dignes, T W ^[1]; Woltz, D

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1. Chevron USA Inc., Concord, CA

The total exploratory footage and number of wells drilled in the onshore area of California during 1981 increased approximately 10% and20%, respectively, over the 1980 figures. Both the average footage drilled per well (5579 ft) and the percentage of success (32.7%) showed declines from 1980. Eight wildcats established new fields in 1981. Two of the wildcats discovered new oil fields and 6 found new gas fields. An additional gas find has been treated as a discovery because of its stratigraphic significance. Onshore development drilling included 2078 wells; 97% of these were completed as successful producers, the same percentage as in 1980. For the California offshore, just 5 exploratory well completions were reported to the Committee on Statistics of Drilling in 1981; only 2 were successful. Texaco announced its Pitas Point gas field extension in May, and Chevron announced a new oil field discovery, the Point Arguello, in October. There were 118 development wells drilled, of which 99 (83.9%) were successful. Development footage and number of wells were up, but the percentage of success declined from 90% in 1980. California's oil production reached an all-time high of 384.8 million bbl in 1981. The state's previous record, set in 1968, was 375.4 million bbl. Geothermal activity in California centered on development of the proven Imperial Valley and Geysers areas and the discovery of the Coso area in Inyo County. Activity in Oregon included evaluation of the Mount Hood and Newberry Volcano areas. Oil and gas exploratory drilling in Oregon druing 1981 led to the discovery of a new gas field by American Quasar in Linn County and to the establishment of a new gas pool by Reichhold Energy at the Mist field in Columbia County. The major portion of Washington's exploratory drilling in 1981 was carried out by Shell in Kittitas County in the south-central part of the state. At last report, the hydrocarbon accumulations found had been deemed noncommercial.

• OSTI ID: 6414037
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 66:11; ISSN AAPGB
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
030300 -- Natural Gas-- Drilling
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& Processing
15 GEOTHERMAL ENERGY
150300 -- Geothermal Exploration & Exploration Technology
CALIFORNIA
DRILLING
EXPLORATION
EXPLORATORY WELLS
FEDERAL REGION IX
FEDERAL REGION X
GEOLOGIC DEPOSITS
GEOTHERMAL EXPLORATION
GEOTHERMAL FIELDS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NATURAL GAS WELLS
NORTH AMERICA
OFFSHORE OPERATIONS
OIL FIELDS
OIL WELLS
OREGON
PETROLEUM DEPOSITS
PRODUCTION
RESOURCES
USA
WASHINGTON
WELL DRILLING
WELLS