发明名称 |
Method and apparatus to determine wellhead level |
摘要 |
The angular misalignment of a wellhead is determined by lowering onto the wellhead an assembly having centering means depending from a base plate and level indicator means fixed on top of the plate. The assembly is suspended from the end of a drillstring which carries a level monitoring means.
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申请公布号 |
US5244040(A) |
申请公布日期 |
1993.09.14 |
申请号 |
US19920853195 |
申请日期 |
1992.03.18 |
申请人 |
TEXACO INC. |
发明人 |
PECUE, II, WILLIAM W. |
分类号 |
E21B33/035;E21B47/00;E21B47/02;E21B47/022;G01C9/36 |
主分类号 |
E21B33/035 |
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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