| 摘要 |
A process for injecting water into a subterranean petroleum-bearing formation for petroleum recovery, said method comprising: a) positioning a selective membrane between an aqueous solution and formation water having a higher solute concentration than the aqueous solution, such that water passes across the membrane by osmosis to dilute the formation water, b) injecting the diluted formation water 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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