发明名称 |
Improved anchor arm for seismic logging tool |
摘要 |
A borehole seismic acquisition tool configured for release from a stuck position within a borehole having a tool body with at least one sensor package, an anchoring arm, and anchoring arm linkage adapted to connect the anchoring arm to the tool body. The anchoring arm linkage includes a weakpoint mechanism adapted to break in response to a minimum threshold amount of breaking force being applied upon the weakpoint mechanism. The anchoring arm includes a first end adapted for contacting a borehole wall surface and a second end pivotally attached to the anchoring arm linkage. The anchoring arm also includes a movable cam removably secured to the first end via a first connector pin. The cam being at least partially rotatable about the first connector pin and configured and arranged to rotate against the borehole wall by a pulling force at a top portion of the borehole seismic acquisition tool. |
申请公布号 |
GB2435778(B) |
申请公布日期 |
2008.06.25 |
申请号 |
GB20070011894 |
申请日期 |
2005.12.14 |
申请人 |
SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
KAZUMASA KANAYAMA;COLIN WILSON;WILLIAM UNDERHILL |
分类号 |
E21B47/01;G01V1/52;E21B23/01;G01V11/00 |
主分类号 |
E21B47/01 |
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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