发明名称 |
Method and apparatus for measuring mud resistivity |
摘要 |
A sensor for measuring mud resistivity in a borehole includes a transmitter having a magnetic moment in a first direction; and a receiver having a magnetic moment in a second direction, wherein the first direction and the second direction are substantially different, wherein the transmitter and the receiver are disposed in an insulating collar of a downhole tool, and wherein the transmitter is disposed at a selected distance no more than 10 inches from the receiver along a longitudinal axis of the downhole tool.
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申请公布号 |
US7091722(B2) |
申请公布日期 |
2006.08.15 |
申请号 |
US20040711657 |
申请日期 |
2004.09.29 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
HOMAN DEAN M.;OMERAGIC DZEVAT;SEBLINE NICOLAS;WANG HANMING |
分类号 |
G01V3/28;G01V3/08;G01V3/10 |
主分类号 |
G01V3/28 |
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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