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New look for gas in Forbes formation, Sacramento Valley, California

Conference · · Am. Assoc. Pet. Geol., Bull.; (United States)
OSTI ID:6366279
The Forbes formation of upper Cretaceous age consists of marine shale, siltstone, and interbedded sandstone, and lies stratigraphically between the younger Kione Deltaic sandstone facies and the older Dobbins shale. On the west side of the Sacramento Valley, the Kione formation is truncated and the Forbes formation is overlain by the Capay (Eocene) and/or Tehama (post-Eocene) formations. In the Sacramento to Red Bluff area, the Forbes formation attains a thickness of up to 5000 ft (1524 m). The importance of the Forbes formation as a source of gas production in the Sacramento Valley is well established. Gas was first produced from the Forbes formation near the south edge of the Marysville Buttes in 1953. The formation is now productive in over 20 fields in the Sacramento Valley with cumulative production to January 1, 1980, of 1.23 billion MCF of gas. As a result of new CDP seismic reflection profiling, drilling for gas from the Forbes formation has increased dramatically since 1978.
OSTI ID:
6366279
Report Number(s):
CONF-8105250-
Conference Information:
Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 65:5
Country of Publication:
United States
Language:
English

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