| 发明名称 | Retrievable stimulation frac (RSF) plug | ||
| 摘要 | A retrievable stimulation frac (retrievable stimulation frac) plug for a well casing having an elongate mandrel having a fluid flow bore, a check valve mandrel seal moveable between an open position and a closed position for selectively sealing the fluid flow bore, a sealing mechanism for sealing between the mandrel and the casing, and a locking mechanism for axially locking the retrievable stimulation frac plug in the casing. | ||
| 申请公布号 | US8869904(B2) | 申请公布日期 | 2014.10.28 |
| 申请号 | US201113183014 | 申请日期 | 2011.07.14 |
| 申请人 | Sure Tech Tool Services Inc. | 发明人 | Jani William |
| 分类号 | E21B33/12;E21B43/26;E21B33/134 | 主分类号 | E21B33/12 |
| 代理机构 | Jackson Walker, LLP | 代理人 | Jackson Walker, LLP |
| 主权项 | 1. A retrievable stimulation frac (RSF) plug for a well casing, comprising: an elongate mandrel having a fluid flow bore; a one-way check valve mandrel seal comprising a flapper, moveable between an open position and a closed position for selectively sealing the fluid flow bore, the flapper comprising an extended lip adapted to urge the flapper into the open position upon engagement with a retrieving tool; a sealing mechanism for sealing between the mandrel and the casing; and a locking mechanism for axially locking the retrievable stimulation frac plug in the casing. | ||
| 地址 | Airdrie CA | ||