发明名称 |
GYROSCOPIC STEERING TOOL USING ONLY A TWO-AXIS RATE GYROSCOPE AND DERIVING THE MISSING THIRD AXIS |
摘要 |
A two-axis gyroscope used on a bottom hole assembly can be used for determining a rate of rotation about the rotational axis of a BHA. The metho d takes advantage of possible misalignment of at least one axis of the two axis gyroscope from orthogonality with respect to the rotational axis of the BHA, resulting in the misaligned gyro being sensitive to BHA rotation.
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申请公布号 |
CA2476789(A1) |
申请公布日期 |
2005.02.07 |
申请号 |
CA20042476789 |
申请日期 |
2004.08.06 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
BYNUM, R. JOHNATHAN;RIGGS, RANDELL;EPPLIN, M. DAVID;ESTES, ROBERT A. |
分类号 |
E21B47/022;G01C19/00;(IPC1-7):G01C19/00 |
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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地址 |
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