| 发明名称 |
Oil Recovery Process |
| 摘要 |
A method of recovering oil from a subterranean oil-bearing reservoir uses an injection fluid comprising a viscosifying polymer in a low salinity water. The reservoir is penetrated by one or more injection wells and by one or more production wells. The method comprises injecting the injection fluid into at least one of the injection wells in a slug size in the range of 0.4 to 1.5 pore volumes (PV). |
| 申请公布号 |
US2014345862(A1) |
申请公布日期 |
2014.11.27 |
| 申请号 |
US201314377073 |
申请日期 |
2013.02.08 |
| 申请人 |
Jerauld Gary Russell;Mohammadi Hourshad |
发明人 |
Jerauld Gary Russell;Mohammadi Hourshad |
| 分类号 |
E21B43/20;C09K8/58;E21B43/16 |
主分类号 |
E21B43/20 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A method of recovering oil from a subterranean oil-bearing reservoir using an injection fluid comprising a viscosifying polymer in a low salinity water, wherein the low salinity water has a total dissolved solids (TDS) content of 15,000 ppmv or less, wherein the ratio of the multivalent cation content of the low salinity water to the multivalent cation content of the connate water of the reservoir is less than 1 and wherein the viscosity of the injection fluid is in the range of 3 to 200 cP, the reservoir being penetrated by one or more injection wells and by one or more production wells, the method comprising injecting the injection fluid into at least one of the injection wells in a slug size in the range of 0.4 to 1.5 pore volumes (PV). |
| 地址 |
Houston TX US |
