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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Geologic Setting of the Unconventional
Antrim Gas Play, Michigan Basin
By
Shell Western E & P, Inc., Houston
The Upper Devonian Antrim Shale is an organic-rich marine shale that provides significant unconventional US gas reserves. Gas production in June 1994 reached 315 MMCFD from approximately 3700 wells. The productive trend, which covers 700 square miles, occurs near the formation's northern subcrop in the Michigan Basin. Three primary factors contribute to the unconventional nature of the Antrim gas play: 1) methane desorption from kerogen, 2) orthogonal regional fractures, and 3) a portion of the gas is self-sourced from rock of low thermal maturity.
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