发明名称 |
SYSTEM AND METHOD FOR EMPLOYING ALTERNATING REGIONS OF MAGNETIC AND NON-MAGNETIC CASING IN MAGNETIC RANGING APPLICATIONS |
摘要 |
A system and methods for facilitating drilling and/or drilling a well in an orientation with respect to an existing well are provided. Specifically, one method in accordance with present embodiments is directed to producing a magnetic field with a magnetic field source positioned in a non-magnetic region of casing within a first well, wherein the first well is cased with alternating regions of magnetic casing and non¬ magnetic casing. The method may also include producing at least one output from at least one magnetic field sensor capable of sensing directional magnetic field components, wherein the at least one output is based on detection of the magnetic field and wherein the at least one magnetic field sensor is positioned in a second well. |
申请公布号 |
WO2010008634(A1) |
申请公布日期 |
2010.01.21 |
申请号 |
WO2009US39645 |
申请日期 |
2009.04.06 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SCHMLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;CLARK, BRIAN |
发明人 |
CLARK, BRIAN |
分类号 |
G01V3/26;G01B7/14;G01V3/18 |
主分类号 |
G01V3/26 |
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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