发明名称 |
Hydrocarbon recovery process |
摘要 |
Hydrocarbons are recovered from subterranean formations by waterflooding. The method comprises passing an aqueous displacement fluid via an injection well through a porous and permeable sandstone formation to release oil and recovering said released oil from a production well spaced from said injection well, wherein (a) the sandstone formation comprises at least one mineral having a negative zeta potential under the formation conditions; (b) oil and connate water are present in the pores of the formation; and (c) the fraction of the divalent cation content of the said aqueous displacement fluid to the divalent cation content of said connate water is less than 1.
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申请公布号 |
US2012085555(A1) |
申请公布日期 |
2012.04.12 |
申请号 |
US201113067720 |
申请日期 |
2011.06.22 |
申请人 |
COLLINS IAN RALPH;JERAULD GARY RUSSELL;LAGER ARNAUD;MCGUIRE PATRICK LEE;WEBB KEVIN;BP CORPORATION NORTH AMERICA INC.;BP EXPLORATION OPERATING COMPANY LIMITED |
发明人 |
COLLINS IAN RALPH;JERAULD GARY RUSSELL;LAGER ARNAUD;MCGUIRE PATRICK LEE;WEBB KEVIN |
分类号 |
E21B43/16;C09K8/60;E21B43/20 |
主分类号 |
E21B43/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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