发明名称 |
TELESCOPING LATCHING MECHANISM FOR CASING CEMENTING PLUG |
摘要 |
Improved cementing plugs and methods of using these cementing plugs in subterranean wells are disclosed. A cementing plug comprises a hollow mandrel and one or more wiper elements coupled to the mandrel. A nose is coupled to the hollow mandrel and is movable between a retracted position and an extended position. A portion of the nose is positioned within the mandrel when in the retracted position. This portion of the nose is positioned outside the mandrel when in the extended position. |
申请公布号 |
US2014102723(A1) |
申请公布日期 |
2014.04.17 |
申请号 |
US201213653101 |
申请日期 |
2012.10.16 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
STAIR TODD ANTHONY |
分类号 |
E21B33/12 |
主分类号 |
E21B33/12 |
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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