In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas
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United States of America Patent
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-
Jul 13, 2004
Grant Date -
Apr 25, 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. After pyrolysis, the portion may be heated to a synthesis gas production temperature. A synthesis gas producing fluid may be introduced into the portion to generate synthesis gas. Synthesis gas may be produced from the formation in a batch manner or in a substantially continuous manner.
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