Oilfield enhanced in situ combustion process
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United States of America Patent
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Feb 24, 2009
Grant Date -
Jul 17, 2008
app pub date -
Mar 13, 2008
filing date -
Jun 7, 2004
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Abstract
A process for improved safety and productivity when undertaking oil recovery from an underground reservoir by the toe-to-heel in situ combustion process employing a horizontal production well. Water, steam, and/or a non-oxidizing gas, which in the preferred embodiment substantially comprises carbon dioxide which acts as a gaseous solvent, is injected into the reservoir for improving recovery in an in situ combustion recovery process, via either an injection well, a horizontal well, or both.
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