发明名称 |
Wear measurement system - for continuous monitoring of drill string pipes during drilling |
摘要 |
<p>An elongated casing is lowered down to the bore on a cable and has a clear centre channel for drilling mud. Within the casing a synchronous motor drives a rotating active electromagnetic sensor fed from an a.c. supply. Recording instruments on the surface produce a synchronized continuous log of instanteous depth and of the internal dimensions of the pipe relative to centre line.</p> |
申请公布号 |
DE2046733(A1) |
申请公布日期 |
1972.05.31 |
申请号 |
DE19702046733 |
申请日期 |
1970.09.22 |
申请人 |
SEWERO KAWKASSKIJ NEFTJANOJ NI |
发明人 |
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分类号 |
E21B47/08;(IPC1-7):21B47/08 |
主分类号 |
E21B47/08 |
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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