发明名称 |
USING LOW FREQUENCY FOR DETECTING FORMATION STRUCTURES FILLED WITH MAGNETIC FLUID |
摘要 |
<p>A method for mapping a subterranean formation having an electrically conductive wellbore casing therein may include using a low frequency electromagnetic (EM) transmitter and EM receiver operating at a low frequency of less than or equal to 10 Hertz to perform a first EM survey of the subterranean formation, and with either the low frequency EM transmitter or EM receiver within the electrically conductive well-bore casing. The method may further include injecting a magnetic fluid into the subterranean formation, and using the low frequency EM transmitter and EM receiver to perform a second EM survey of the subterranean formation after injecting the magnetic fluid.</p> |
申请公布号 |
EP2724184(A1) |
申请公布日期 |
2014.04.30 |
申请号 |
EP20120814262 |
申请日期 |
2012.07.19 |
申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED |
发明人 |
ZHANG, PING;ALUMBAUGH, DAVID L.;WILT, MICHAEL |
分类号 |
G01V3/30;E21B49/00 |
主分类号 |
G01V3/30 |
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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