发明名称 |
Oil recovery process using alkyl hydroxyaromatic dianionic surfactants as mobility control agents |
摘要 |
A method for recovering oil from a subterranean formation is disclosed wherein an aqueous surfactant solution is injected into the formation to reduce the mobility of gas in a gas-flooding process. The gas may include hydrocarbon gas, inert gas, carbon dioxide, and steam. The surfactant is represented by the general formula <IMAGE> where R is a linear or branched chain alkyl group with n carbon atoms wherein n ranges from 0 to about 18, except that if the gas is steam n ranges from about 9 to about 30; x ranges from 0 to about 20 and y ranges from 0 to about 20, provided x+y does not exceed about 20; R' is a linear or branched chain alkyl group with m carbon atoms wherein m ranges from 0 to 4, except that if the gas is steam m ranges from 1 to 4, with the proviso that the sum of x+y+m is at least one; and each M+ is a cation.
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申请公布号 |
US4828032(A) |
申请公布日期 |
1989.05.09 |
申请号 |
US19880282923 |
申请日期 |
1988.12.07 |
申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
TELETZKE, GARY F.;ASHCRAFT, JR., THOMAS L.;REED, RONALD L. |
分类号 |
C09K8/584;C09K8/592;C09K8/594;E21B43/24 |
主分类号 |
C09K8/584 |
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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