发明名称 |
Method and apparatus for testing spotting fluids for releasing stuck drill pipe |
摘要 |
An apparatus and method for testing the performance of spotting fluids used for freeing drill pipe stuck to drilling mud filter cake in a borehole. A small cylinder simulating the drill pipe is pressed against a filter cake in a vessel. Spotting fluid is applied and the cylinder and cake are pulled apart. The maximum force required to free the cylinder is recorded.
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申请公布号 |
US4829816(A) |
申请公布日期 |
1989.05.16 |
申请号 |
US19870118095 |
申请日期 |
1987.11.06 |
申请人 |
STANDARD OIL PRODUCTION COMPANY |
发明人 |
HUBBARD, JASON C. |
分类号 |
E21B31/03;E21B47/00;E21B49/00 |
主分类号 |
E21B31/03 |
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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