| 发明名称 |
PRESSURE ASSISTED BLOWOUT PREVENTER |
| 摘要 |
A blowout preventer (BOP) includes a pressure driven operator that is equipped with a balancing circuit to offset pressure inside the BOP. The operator, which is used to drive a ram, includes a piston, coupled to the ram by an operator arm, and a balance arm on a side of the piston opposite the operator arm. Pressure from inside the BOP communicates to an end of the balance arm opposite the piston and exerts a force to drive the ram radially inward. |
| 申请公布号 |
US2015167417(A1) |
申请公布日期 |
2015.06.18 |
| 申请号 |
US201314104898 |
申请日期 |
2013.12.12 |
| 申请人 |
Hydril USA Manufacturing LLC |
发明人 |
LARSON Eric Dale;Baker Brian Scott |
| 分类号 |
E21B33/06;E21B34/04 |
主分类号 |
E21B33/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A blowout preventer (BOP) comprising:
an annular body having a main bore in pressure communication with a wellbore; an operator assembly having an end that selectively projects radially into the body; a piston coupled with the operator assembly; and a balance rod coupled to a side of the piston distal from the main bore, and having a pressure surface in selective pressure communication with the main bore. |
| 地址 |
Houston TX US |
