In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material
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United States of America Patent
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-
Mar 30, 2004
Grant Date -
May 9, 2002
app pub date -
Apr 24, 2001
filing date -
Apr 24, 2000
priority date (Note) -
Expired
status (Latency Note)
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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. Heat may be allowed to transfer from one or more heat sources to a selected section of the formation such that superimposed heat from the one or more heat sources pyrolyzes a relatively large portion of hydrocarbon material within the selected section of the formation.
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