发明名称 |
SYSTEM AND METHOD FOR DETECTING CASING IN A FORMATION USING CURRENT |
摘要 |
<p>The present disclosure is directed to systems and methods for relative positioning of wells. A method in accordance with an exemplary embodiment may include drilling a new well in a field having at least three completed wells using a drilling tool that includes a magnetometer. The method may further include driving current on a first pair of the at least three completed wells and then driving current on a second pair of the at least three completed wells, wherein the current is driven on each of the first and second pairs in a balanced mode. The method may also include measuring a direction of a first magnetic field generated by the current on the first pair using the magnetometer, measuring a direction of a second magnetic field generated by the current on the second pair using the magnetometer, and determining a location of the drilling tool relative to the completed wells based on the direction of the first magnetic field and the direction of the second magnetic field.</p> |
申请公布号 |
WO2010011395(A1) |
申请公布日期 |
2010.01.28 |
申请号 |
WO2009US43531 |
申请日期 |
2009.05.12 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;CLARK, BRIAN;MORLEY, JAN, S. |
发明人 |
CLARK, BRIAN;MORLEY, JAN, S. |
分类号 |
G01V3/24;E21B47/00;G01B7/004;G01V3/20 |
主分类号 |
G01V3/24 |
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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