| 发明名称 |
Packer apparatus |
| 摘要 |
A packer apparatus usable in a well casing to provide an annular seal in the well casing. The packer apparatus includes an activation member mounted to the body wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in the well casing. A plurality of pistons is arranged to move the activation member relative to the body, each piston being disposed in a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body. |
| 申请公布号 |
US9187989(B2) |
申请公布日期 |
2015.11.17 |
| 申请号 |
US201213820091 |
申请日期 |
2012.01.12 |
| 申请人 |
|
发明人 |
Lee Paul Bernard |
| 分类号 |
E21B23/06;E21B43/11;E21B33/12;E21B33/126;E21B33/128;E21B43/112;E21B10/32;E21B10/34;E21B33/13 |
主分类号 |
E21B23/06 |
| 代理机构 |
Kirton McConkie |
代理人 |
Kirton McConkie ;Witt Evan R. |
| 主权项 |
1. A packer apparatus for providing an annular seal in a downhole well casing or an open borehole, the apparatus comprising:
a body arranged to be disposed in a well casing; an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in the well casing in use; and a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body. |
| 地址 |
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