A Survey of Potential Geopressured Resource Areas in California

Basic Information
Author: Sanyal, S.K., Robertson-Tait, A., Kraemer, M., and Buening, N.
Description:This paper presents the initial results of a survey of the occurrence and characteristics of geopressured fluid resources in California using the publicly-available database involving more than 150,000 oil and gas wells drilled in the State. Of the 975 documented on-shore oil and gas pools studied, about 42 percent were identified as potentially geopressured. Geothermal gradients in California oil and gas fields lie within the normal range of 1 to 2 degree F per 100 feet. Except for the Los Angles Basin, there was no evidence of higher temperatures or temperature gradients in geopressured pools. The porosity of geopressured pools shows the same normal distribution as for normal pressured pools, with a mode in the range of 20 to 25 percent. The salinity distribution of both the geopressured and normal pressured pools appear to be bimodal, each with two peak ranges of 0 to 10,000 and 25,000 to 30,000 ppm.
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Author Contact Information
Distributor Contact Information
Organization Name: Arizona Geological Survey
Street: 416 W. Congress St. Ste. 100
City: Tucson
State: Arizona
Zip: 85701
Phone: 520-770-3500
Geographic Extent
North Bounding Latitude: 42.3772
South Bounding Latitude: 32.4198
East Bounding Longitude: -113.027
West Bounding Longitude: -125.068