发明名称 |
ARTICULATED DOWNHOLE INSTRUMENT ASSEMBLY FOR USE IN A DRILL STRING |
摘要 |
An articulated downhole surveying instrument and method for measuring parameters of a wellbore includes one or more laterally flexible coupling sections. The laterally flexible coupling sections are rigid in axial tension and axial compression, and are smaller in cross-section than the surveying instrument housing. A separate housing is used for each component of the surveying instrument, and each component housing is interconnected with the laterally flexible coupling. One or more flexible spacer bars are also provided. The spacer bars and coupling sections enable the assembly to be passed through a short-radius angle wellbore with greatly reduced risk of sticking or hanging up. |
申请公布号 |
CA1318660(C) |
申请公布日期 |
1993.06.01 |
申请号 |
CA19890608284 |
申请日期 |
1989.08.14 |
申请人 |
THOMETZ, THEODORE G. |
发明人 |
THOMETZ, THEODORE G.;BARRON, CHARLES D. |
分类号 |
E21B23/14;E21B47/00;E21B47/01;E21B47/022 |
主分类号 |
E21B23/14 |
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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