发明名称 |
VERFAHREN ZUM AUTOMATISCHEN ÜBERWACHEN DER VIBRATIONEN EINES BOHRGESTÄNGES. |
摘要 |
PCT No. PCT/FR92/00169 Sec. 371 Date Nov. 20, 1992 Sec. 102(e) Date Nov. 20, 1992 PCT Filed Feb. 25, 1992 PCT Pub. No. WO92/14908 PCT Pub. Date Sep. 3, 1992.A method for automatically monitoring the vibrational condition of a drill string fitted with detectors comprises the following steps: obtaining a reference spectrum for each detector; obtaining a spectrum for each detector representing the actual situation; comparing the two spectra to detect possible instabilities in the values measured by the detectors; indication of said instabilities by means of audio and/or visual devices. |
申请公布号 |
DE69204396(D1) |
申请公布日期 |
1995.10.05 |
申请号 |
DE1992604396 |
申请日期 |
1992.02.25 |
申请人 |
ELF AQUITAINE PRODUCTION, COURBEVOIE, FR |
发明人 |
HENNEUSE, HENRY, F-64140 BILLERE, FR |
分类号 |
E21B44/00;E21B44/08;E21B47/00;(IPC1-7):E21B44/00 |
主分类号 |
E21B44/00 |
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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