发明名称 |
APPARATUS AND METHOD FOR DETERMINING A DRILLING MODE TO OPTIMIZE FORMATION EVALUATION MEASUREMENTS |
摘要 |
There are many natural pauses during rotary drilling operations where a portion of the drill string remains stationary. Pauses include drill pipe connections, circulating time, and fishing operations. These pauses are used to obtain formation evaluation measurements that take a long time or that benefit from a quiet environment, as opposed to the naturally noisy drilling environment. Various techniques that are sensitive to the mud flow, weight-on-bit, or motion of the drill string may be used alone or in combination to identify the drilling mode and control the data acquisition sequence.
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申请公布号 |
CA2259853(A1) |
申请公布日期 |
1999.08.27 |
申请号 |
CA19992259853 |
申请日期 |
1999.01.21 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
HEIDLER, RALF;ESMERSOY, CENGIZ;POITZSCH, MARTIN E.;CRARY, STEVEN F. |
分类号 |
E21B49/00;E21B44/00;E21B47/00;E21B47/12;G01N33/24;G01V1/40;G01V3/18;G01V5/00;(IPC1-7):E21B49/00;E21B7/04 |
主分类号 |
E21B49/00 |
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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