发明名称 |
Method of drilling and cementing a well using a drilling fluid convertible in place into a settable cement slurry |
摘要 |
A method of drilling and cementing a well using a novel drilling fluid convertible in place by the extrinsic application of heat into a settable cement slurry and composition therefor. The novel drilling fluid comprises an aqueous drilling mud containing in intimate admixture therewith cement and a thermally deactivatable deflocculant which prevents the cement from setting while the fluid is being used as a drilling mud. The method comprises drilling a well with a rotary bit through which the novel drilling fluid is circulated; suspending a casing in the well; removing the fluid from inside the casing; and applying sufficient extrinsic heat to the fluid in place in the annulus of the well to deactivate the deflocculant, thereby converting the fluid in place into a settable cement slurry.
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申请公布号 |
US4519452(A) |
申请公布日期 |
1985.05.28 |
申请号 |
US19840615851 |
申请日期 |
1984.05.31 |
申请人 |
EXXON PRODUCTION RESEARCH CO. |
发明人 |
TSAO, YUH-HWANG;BINDER, JR., GEORGE G. |
分类号 |
C04B40/06;C09K8/42;E21B33/14;E21B36/04;(IPC1-7):E21B33/14 |
主分类号 |
C04B40/06 |
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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