发明名称 |
Survey apparatus and methods for directional wellbore wireline surveying |
摘要 |
A wellbore survey method and apparatus which includes a gyroscope, wherein the gyroscope has a spin axis, aligned with the instrument axis, and further having two sensitive axis orthogonally related to the spin axis and to each other. In addition, the wellbore survey apparatus contains a drive means, functionally connected with the gyroscope, to rotate the gyro about the instrument axis. The wellbore survey apparatus also contains a set of accelerometers, wherein the sensitive axis are aligned orthogonally to each other, and said drive means is functionally connected to the accelerometers to rotate the accelerometers about the instrument axis. Sensors determine the azimuthal direction of inclination of the wellbore at a first location therein and while traversing from said first location. Attitude references of the wellbore with regard to said first location are determined while the tool is continuously traversing through the wellbore.
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申请公布号 |
US5821414(A) |
申请公布日期 |
1998.10.13 |
申请号 |
US19970797785 |
申请日期 |
1997.02.07 |
申请人 |
NOY, KOEN;WRIGHT, ERIC;UTTECHT, GARY;BROSNAHAN, JAMES;WEI, HAN;NEUBAUER, GREG |
发明人 |
NOY, KOEN;WRIGHT, ERIC;UTTECHT, GARY;BROSNAHAN, JAMES;WEI, HAN;NEUBAUER, GREG |
分类号 |
E21B47/022;(IPC1-7):E21B47/00 |
主分类号 |
E21B47/022 |
代理机构 |
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代理人 |
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主权项 |
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