发明名称 |
WELL TOOL WITH SHEARABLE COLLET |
摘要 |
<p>A running tool for well drilling operations is carried by a running string into and out of a wellbore. A collet is carried by the running tool, the collet having fingers with a radially expanded position arranged to latch against a wellbore shoulder in the wellbore. The fingers are resiliently and radially contractible. A shear element is carried by the collet, the shear element preventing the fingers from radially contracting to unlatch the running tool while the shear element is intact. If a selected axial force is applied against the shear element, it shears, freeing the collet fingers to retract. The collet may be part of a tool to set and release a liner hanger from engagement with a string of casing.</p> |
申请公布号 |
WO2012092657(A1) |
申请公布日期 |
2012.07.12 |
申请号 |
WO2011CA01430 |
申请日期 |
2011.12.30 |
申请人 |
TESCO CORPORATION;ERIKSEN, ERIK, P.;TATE, BARRY, J. |
发明人 |
ERIKSEN, ERIK, P.;TATE, BARRY, J. |
分类号 |
E21B23/04;E21B7/20;E21B19/16;E21B43/10 |
主分类号 |
E21B23/04 |
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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