In situ thermal processing of a coal formation and tuning production
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United States of America Patent
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May 25, 2004
Grant Date -
Apr 15, 2004
app pub date -
Apr 24, 2001
filing date -
Apr 24, 2000
priority date (Note) -
Expired
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Abstract
A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H.sub.2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. The mixture may be produced from the formation through production wells. A spacing between production wells, and operating conditions of production wells and heat injection wells, may allow the produced mixture to have a desired ratio of condensable hydrocarbons to non-condensable hydrocarbons.
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