发明名称 |
COMPOSITION AND METHOD FOR REDUCING THE PERMEABILITY OF SUBTERRANEAN FORMATIONS |
摘要 |
<p>The present invention relates generally to the composition and method for reducing the permeability of subterranean formations penetrated by a wellbore. The composition of the present invention comprises a wellbore fluid having dispersed therein a fluid loss control agent comprising a polyester polymer which is substantially insoluble in the wellbore fluid. The polymer degrades in the presence of water at an elevated temperature to form small molecules which are soluble in a fluid in the subterranean formation. The method of the present invention comprises reducing the permeability of subterranean formations penetrated by a wellbore by placing the composition of the present invention down the wellbore.</p> |
申请公布号 |
CA1197978(A) |
申请公布日期 |
1985.12.17 |
申请号 |
CA19820407776 |
申请日期 |
1982.07.21 |
申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
ERBSTOESSER, STEVEN R.;COOKE, CLAUDE E., JR.;SINCLAIR, RICHARD G.;EPSTEIN, MICHAEL M. |
分类号 |
C08G63/08;C09K8/508;C09K8/516;(IPC1-7):E21B33/138 |
主分类号 |
C08G63/08 |
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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