Hydrocarbon recovery method
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United States of America Patent
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Sep 16, 2014
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N/A
app pub date -
Jul 19, 2010
filing date -
Jul 22, 2009
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Abstract
A process for increasing the efficiency of hydrocarbon recovery from an underground formation containing viscous hydrocarbons through the use of both gravity drainage and mobile water drive. The process comprises a pair of vertically-spaced horizontal wells and a laterally offset horizontal well. A heated fluid is injected into the formation via a first well pair, and an adjacent horizontal well creates a pressure sink to draw the heated fluid laterally to assist growth of the formation drainage area for hydrocarbon recovery improvement. Injected fluids recovered from both producers are collected for recycling.
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