发明名称 |
Organically crosslinked polyvinyl alcohol copolymeric gels for use under harsh reservoir conditions |
摘要 |
A gel-forming composition capable of plugging highly permeable zones in a subterranean formation. The composition comprises water, a water-dispersible polyvinyl alcohol copolymer and a crosslinking agent which is a mixture of an aldehyde and a phenolic component in an amount effective to cause gelation of the aqueous solution of the copolymer. The resultant gel is exceptionally thermally stable and, therefore, can be used as an effective profile control agent in all enhanced oil recovery operations, including steam flooding. Also provided is a process for recovering oil from a subterranean oil-bearing formation.
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申请公布号 |
US4940090(A) |
申请公布日期 |
1990.07.10 |
申请号 |
US19890350499 |
申请日期 |
1989.05.11 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
HOSKIN, DENNIS H.;SHU, PAUL |
分类号 |
C09K8/512;C09K8/594;E21B43/24 |
主分类号 |
C09K8/512 |
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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