发明名称 |
DETERMINING BORE-HOLE ORIENTATION |
摘要 |
<p>Survey apparatus and method employs a free gyroscope for fast determination of azimuth, free gyroscope alignment being periodically corrected by a rate gyroscope which is periodically rotated for accurate azimuth determination. An accelerometer is also usable in conjunction with the gyroscopes for tilt determination.</p> |
申请公布号 |
GB2027904(A) |
申请公布日期 |
1980.02.27 |
申请号 |
GB19790023861 |
申请日期 |
1979.07.09 |
申请人 |
APPLIED TECHNOLOGIES ASSOCIATES |
发明人 |
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分类号 |
E21B47/022;G01C19/38;(IPC1-7):01C19/38;01C19/46;01C23/00 |
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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