发明名称 Electromagnetic survey system
摘要 <p>The cable has a set of current sources (32, 32`) electrically coupled to a dipole antenna (34). Each of the set of current sources is electrically coupled to two length cables (22, 26). A power isolation diode is provided between each of the set of current sources and the two length cables. The set of current sources are parallely electrically coupled. A common source of electrical power is provided to the set of current sources. Two of the set of current sources operate at different currents and frequencies.</p>
申请公布号 GB0619099(D0) 申请公布日期 2006.11.08
申请号 GB20060019099 申请日期 2006.09.28
申请人 SCHLUMBERGER HOLDINGS LIMITED 发明人
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