发明名称 |
Method of correcting for axial error components in magnetometer readings during wellbore survey operations |
摘要 |
<p>A method is provided for deriving wellbore azimuth in a manner which reduces the impact of axial magnetic field errors, which utilizes a plurality of estimates of the axial component of the magnetic field which are combined in a manner which emphasizes the better estimates and deemphasizes the poorer estimates. <IMAGE></p> |
申请公布号 |
EP0654686(B1) |
申请公布日期 |
2002.07.24 |
申请号 |
EP19940308590 |
申请日期 |
1994.11.21 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DIPERSIO, RICHARD D. |
分类号 |
E21B47/022;G01V3/26;(IPC1-7):G01V3/26;G01R33/02 |
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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