发明名称 PIPE SECTION FOR USE IN BOREHOLE OPERATIONS AND METHOD OF MANUFACTURING THE SAME
摘要 <p>The pipe section comprises an insulated electrical conductor extending between electrodes carried by the pipe joints. Each electrode is designed to be in signal transmitting relationship with an electrode of an identical pipe section when the two sections are interconnected by their joints. The electrical conductor has a helical form with straight end portions.</p>
申请公布号 CA1077081(A) 申请公布日期 1980.05.06
申请号 CA19770288103 申请日期 1977.10.04
申请人 SHELL CANADA LIMITED 发明人 DENISON, EARLY B.;DICKSON, LEON L. (JR.);MARSH, GARY L.
分类号 (IPC1-7):01R3/04 主分类号 (IPC1-7):01R3/04
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