发明名称 |
Apparatus and method to communicate bidirectional information in a borehole. |
摘要 |
<p>The invention relates generally to mapping or survey apparatus and methods, and more particularly concerns efficient transmission of survey signals or data from depth level in a borehole or well to the well surface, for analysis, display or recordation; further it concerns efficient transmission of command data from a surface computer unit to the survey tool at depth level in a borehole or well for control of instrumentation operating modes, operating characteristics, or diagnostic purposes; and further it concerns supply of DC power downwardly to the instrumentation via a wireline by which such command signal and survey data or signals may be transmitted upwardly or downwardly respectively.</p> |
申请公布号 |
EP0194792(A2) |
申请公布日期 |
1986.09.17 |
申请号 |
EP19860301487 |
申请日期 |
1986.03.03 |
申请人 |
APPLIED TECHNOLOGIES ASSOCIATES |
发明人 |
BROWN, DAVID C.;WATSON, FRED L.;ENGEBRETSON, HAROLD J. |
分类号 |
E21B47/12 |
主分类号 |
E21B47/12 |
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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