METHOD AND SYSTEM FOR DETECTING AND MAPPING HYDROCARBON RESERVOIRS USING ELECTROMAGNETIC FIELDS
摘要
<p>The system and method provided modify a conventional seafloor long-wire electromagnetic (LEM) receiver by increasing the number of discrete antennae placed on the long wire. Two dipoles of electric field data are positioned exactly adjacent to each other, providing input to the same data logger system located within a seafloor survey unit to which the long wire is connected. Highly precise electric field gradients can be obtained by taking the difference of the measurements of the two electrodes, both for amplitude and phase. Any common-mode source of noise, such as magnetotelluric signals and receiver instrument noise will be rejected when the signals from the two electrodes are differenced. An acoustic navigation system utilizes a plurality of transponders to permit triangulation for accurate source-receiver ranging.</p>
申请公布号
WO2008028083(A2)
申请公布日期
2008.03.06
申请号
WO2007US77306
申请日期
2007.08.30
申请人
THE REGENTS OF UNIVERSITY OF CALIFORNIA;CONSTABLE, STEVEN, C.;KEY, KERRY, W.