发明名称 |
Alkylxylene sulfonates for enhanced oil recovery processes |
摘要 |
The present invention is directed to alkylxylene sulfonate for enhanced oil recovery processes. The alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the alkylxylene sulfonate of the present invention. The alkylxylene sulfonate is employed in an aqueous media. The method optionally employs co-surfactants. It has surprisingly been discovered that the high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and the high percentage alkyl group attachment to the xylene moiety at positions higher than the 2-position along the alkyl carbon chain on the alkylxylene sulfonate of the present invention provides an enhanced oil recovery (EOR) surfactant having low Interfacial Tension (IFT).
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申请公布号 |
US7332460(B2) |
申请公布日期 |
2008.02.19 |
申请号 |
US20040893729 |
申请日期 |
2004.07.15 |
申请人 |
CHEVRON ORONITE COMPANY LLC |
发明人 |
CAMPBELL CURT B.;SINQUIN GILLES P. |
分类号 |
C09K8/584;C07C309/00;C07C313/00;C09K3/00;E21B21/14;E21B43/22 |
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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