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Shallow, low-permeability reservoirs of northern Great Plains - assessment of their natural gas resources.

American Association of Petroleum Geologists Bulletin

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Abstract

Major resources of natural gas are entrapped in low-permeability, low-pressure reservoirs at depths less than 1200m in the N.Great Plains. This shallow gas is the product of the immature stage of hydrocarbon generation and is referred to as biogenic gas. Prospective low-permeability, gas-bearing reservoirs range in age from late Early to Late Cretaceous. The following facies were identified and mapped: nonmarine rocks, coastal sandstones, shelf sandstones, siltstones, shales, and chalks. The most promising low-permeability reservoirs are developed in the shelf sandstone, siltstone, and chalk facies. Reservoirs within these facies are particularly attractive because they are enveloped by thick sequences of shale which serve as both a source and a seal for the gas.-from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Shallow, low-permeability reservoirs of northern Great Plains - assessment of their natural gas resources.
Series title:
American Association of Petroleum Geologists Bulletin
Volume
64
Issue:
7
Year Published:
1980
Language:
English
Publisher:
American Association of Petroleum Geologists (AAPG)
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Association of Petroleum Geologists Bulletin
First page:
969
Last page:
987
Number of Pages:
19