Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 17, 2011
Patent Application Number
11919699
Date Filed
May 5, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A process for injecting water into a subterranean petroleum-bearing formation for petroleum recovery, said method comprising: a) positioning a selective membrane (14) between an aqueous solution (18) and formation water (20) having a higher solute concentration than the aqueous solution (18), such that water passes across the membrane (14) by osmosis to dilute the formation water (20), b) injecting the diluted formation water (22) into the petroleum-bearing formation, c) recovering formation water from the petroleum-bearing formation, and d) using at least a portion of the recovered formation water in step a).
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