| 发明名称 |
POLYURETHANE BALL SEALERS FOR WELL TREATMENT FLUID DIVERSION |
| 摘要 |
Ball sealers comprising a solid core coated with a polyurethane elastomer are introduced into a well to seal well perforations and divert fluid therein. In the preferred embodiment the ball sealers are used in a hydrocarbon liquid treating fluid and have a density less than the treating fluid.
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| 申请公布号 |
US4279303(A) |
申请公布日期 |
1981.07.21 |
| 申请号 |
US19780921413 |
申请日期 |
1978.07.03 |
| 申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
ERBSTOESSER, STEVEN R. |
| 分类号 |
C09K8/516;E21B27/02;E21B33/138;E21B43/26;(IPC1-7):E21B33/13;E21B43/27 |
主分类号 |
C09K8/516 |
| 代理机构 |
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代理人 |
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| 主权项 |
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