| 发明名称 |
PACKOFF FOR LINER DEPLOYMENT ASSEMBLY |
| 摘要 |
A packoff for hanging a liner string from a tubular string cemented in a wellbore includes: a tubular body having an outer groove and an inner groove; an inner seal assembly disposed in the inner groove; an outer seal assembly disposed in the outer groove; a cap connected to an upper end of the body for retaining the seal assemblies; a plurality dogs disposed in respective openings formed through a wall of the body; and a lock sleeve. The lock sleeve is: disposed in the body, longitudinally movable relative to the body, and has a cam profile formed in an outer surface thereof for extending the dogs. |
| 申请公布号 |
US2014352944(A1) |
申请公布日期 |
2014.12.04 |
| 申请号 |
US201313903103 |
申请日期 |
2013.05.28 |
| 申请人 |
Weatherford/Lamb, Inc. |
发明人 |
DEVARAJAN Kannan;PERVEZ Muhammad Saleem;GIVENS George;TAKOTUE Alexis;MOHAMMED Mujeer Ahmed |
| 分类号 |
E21B23/06 |
主分类号 |
E21B23/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A packoff for hanging a liner string from a tubular string cemented in a wellbore, comprising:
a tubular body having an outer groove and an inner groove; an inner seal assembly disposed in the inner groove; an outer seal assembly disposed in the outer groove; a cap connected to an upper end of the body for retaining the seal assemblies; a plurality dogs disposed in respective openings formed through a wall of the body; and a lock sleeve:
disposed in the body,longitudinally movable relative to the body, andhaving a cam profile formed in an outer surface thereof for extending the dogs. |
| 地址 |
Houston TX US |
