发明名称 |
Conversion of oil-base mud to oil mud-cement |
摘要 |
A water-in-oil emulsion drilling fluid can be converted into an oil mud-cement slurry for use in oil well cementing procedures. Also, a universal fluid can be prepared using the water-in-oil emulsion drilling fluid by treating with an hydraulic material so that it will lay down a filter cake during drilling which can be triggered to set into a hard cement and bond to the formation after the above oil mud-cement slurry has been placed in the borehole at the conclusion of drilling.
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申请公布号 |
US5476144(A) |
申请公布日期 |
1995.12.19 |
申请号 |
US19940309239 |
申请日期 |
1994.09.20 |
申请人 |
SHELL OIL COMPANY |
发明人 |
NAHM, JAMES J. W.;WYANT, REECE E. |
分类号 |
C04B18/04;C04B28/02;C09K8/32;C09K8/46;E21B33/13;(IPC1-7):E21B21/00;E21B33/138 |
主分类号 |
C04B18/04 |
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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