| 发明名称 |
AN IMPROVED CORING BIT MOTOR AND METHOD FOR OBTAINING A MATERIAL CORE SAMPLE |
| 摘要 |
The present invention provides an improved coring motor for use in obtaining a core sample from the side wall of a drilled bore hole. The present invention provides controllable rotation, extension and retraction of the coring bit relative t o the side wall without complicated positioning linkages and with conservation of space for use in slim tools for use downhole.
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| 申请公布号 |
CA2356576(A1) |
申请公布日期 |
2002.03.25 |
| 申请号 |
CA20012356576 |
申请日期 |
2001.09.05 |
| 申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
LAUPPE, DEAN W.;TRAN, SONY;SUNDQUIST, ROBERT W.;CONTRERAS, GARY W.;HILL, BUNKER M.;HARRIGAN, EDWARD |
| 分类号 |
E21B4/04;E21B4/18;E21B7/08;E21B44/00;E21B49/06;(IPC1-7):E21B25/00 |
主分类号 |
E21B4/04 |
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