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    • 5. 发明授权
    • Communications systems in a well
    • 通信系统在井中
    • US06252518B1
    • 2001-06-26
    • US09193772
    • 1998-11-17
    • Guy Vachon Laborde
    • Guy Vachon Laborde
    • G01V100
    • E21B47/12
    • A system for use with a well includes a surface device, a communications link coupled to the surface device and extending into the well, and a plurality of downhole devices coupled to different points on the communications link in the well. The surface device and the plurality of devices are adapted to determine distortions of different portions of the communications link coupling the surface device and downhole devices and to compensate for the distortions when communicating. Transfer characteristics of the communications link portions may be determined, from which equalization parameters may be determined to compensate for distortions caused by communications link portions.
    • 用于井的系统包括表面装置,耦合到表面装置并延伸到井中的通信链路以及耦合到井中的通信链路上的不同点的多个井下装置。 表面装置和多个装置适于确定联接表面装置和井下装置的通信链路的不同部分的失真,并且在通信时补偿失真。 可以确定通信链路部分的传输特性,从中可以确定均衡参数以补偿由通信链路部分引起的失真。