发明名称 |
Methods and apparatus for reducing electromagnetic signal noise |
摘要 |
The present invention generally provides methods and apparatus for reducing noise in a detected electromagnetic wave used to telemeter data during a wellbore operation. In one embodiment, two surface antennae are placed on opposite sides of the wellbore and at the same distance from the wellbore. The signals from the two antennae are summed to reduce the noise in the electromagnetic signal transmitted from the electromagnetic downhole tool.
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申请公布号 |
US2006035591(A1) |
申请公布日期 |
2006.02.16 |
申请号 |
US20050152408 |
申请日期 |
2005.06.14 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
YOUNG ALLEN;NERO MICHAEL;BARRY LAURENCE;HAWTHORNE HUGH;VILLARREAL ROBERT |
分类号 |
H04B1/00;E21B44/00;E21B47/12;G01V1/22;G01V3/00;G01V3/34;G08C25/00 |
主分类号 |
H04B1/00 |
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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