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    • 1. 发明申请
    • METHOD TO MAINTAIN TOWED DIPOLE SOURCE ORIENTATION
    • 维持牵引偶极子源方向的方法
    • WO2008008127A3
    • 2008-08-07
    • PCT/US2007012222
    • 2007-05-18
    • EXXONMOBIL UPSTREAM RES COSUMMERFIELD PHILIP JGALE LARRY SFIELDING BRIAN J
    • SUMMERFIELD PHILIP JGALE LARRY SFIELDING BRIAN J
    • G01V3/02G01R27/08G01V3/04G01V3/06G01V3/12
    • G01V3/12G01V3/083
    • Apparatus and method for a steerable horizontal electric dipole source system for underwater deployment as a moving source in electromagnetic surveying of subsurface regions for hydrocarbons. Position locating sensors (195) are placed near each electrode (26, 27), and means (197, 198) are provided for correcting the electrodes to be at the same elevation with azimuth aligned with the source tow line (11) and the electrode mid-point positioned over the source tow line, based on instantaneous location information from the sensors. The streamer (28) connecting the electrodes may also be monitored for shape by sensors, with corrections made by lateral and vertical control means disclosed herein. The invention can be applied to any marine streamer used in geophysical surveys, including a towed streamer (191) of electromagnetic or seismic receivers (192).
    • 用于水下部署的可转向水平电偶极子源系统的装置和方法,作为烃的地下区域的电磁勘测中的移动源。 位置定位传感器(195)放置在每个电极(26,27)附近,并且提供用于校正电极的装置(197,198)处于相同的高度,方位角与源绞合线(11)和电极 基于来自传感器的瞬时位置信息,定位在源拖曳线上的中点。 连接电极的拖缆(28)也可以通过传感器监测形状,并通过本文公开的横向和竖直控制装置进行校正。 本发明可以应用于地球物理勘测中使用的任何海洋拖缆,包括电磁或地震接收器(192)的拖曳拖缆(191)。