发明名称 |
Bit-run nominal seat protector and method of operating same |
摘要 |
A drilling system employs a set of bushings that protect seats used for casing hangers. The system includes one or more seat protectors that attach to a running tool. The running tool is lowered down the wellbore with the seat protectors attached and deposits a bushing at each surface to be protected. The running tool may retrieve the bushings as the running tool is withdrawn from the wellbore. |
申请公布号 |
US8074724(B2) |
申请公布日期 |
2011.12.13 |
申请号 |
US20090413054 |
申请日期 |
2009.03.27 |
申请人 |
MINASSIAN MARC;EPPINGHAUS GUILHERME;FORD DAVID L.;VETCO GRAY INC. |
发明人 |
MINASSIAN MARC;EPPINGHAUS GUILHERME;FORD DAVID L. |
分类号 |
E21B19/24;E21B33/04 |
主分类号 |
E21B19/24 |
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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