发明名称 |
Method and apparatus for maintaining electric cable inside drill pipe |
摘要 |
An insulated electric conductor employed in a tubular drill string to transmit electric energy between subsurface and surface locations is arranged within the drill string in a convoluted configuration to provide an excess length of conductor. The convoluted conductor is prevented from entangling during drilling by rotation limiting assemblies mounted in the drill string over a selected interval.
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申请公布号 |
US4098342(A) |
申请公布日期 |
1978.07.04 |
申请号 |
US19770800367 |
申请日期 |
1977.05.25 |
申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
ROBINSON, LEON H.;SPEERS, JERRY M.;BARRY, ADELBERT;CAMPBELL, DANIEL J. |
分类号 |
E21B17/00;E21B23/14;E21B47/12;(IPC1-7):E21B7/00 |
主分类号 |
E21B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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