In situ thermal processing of a relatively impermeable formation to increase permeability of the formation
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United States of America Patent
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Aug 31, 2004
Grant Date -
Jul 17, 2003
app pub date -
Apr 24, 2002
filing date -
Apr 24, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be allowed to transfer from the heat sources to a selected section of the formation. The transferred heat may pyrolyze at least some hydrocarbons within the selected section. A mixture of hydrocarbons may be produced from the selected section. In some embodiments, the permeability of a portion of the formation may be increased relative to an initial permeability of the portion.
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