| 发明名称 |
EQUALIZING FLAPPER FOR DOWNHOLE SAFETY VALVES |
| 摘要 |
An equalizer valve for a flapper in a subsurface safety valve is described. A tapered plunger is biased by compact spring disposed in the plunger bore. The spring is supported by a C-shaped ring extending into a peripheral groove around the plunger bore.
|
| 申请公布号 |
CA2364329(A1) |
申请公布日期 |
2002.06.05 |
| 申请号 |
CA20012364329 |
申请日期 |
2001.12.05 |
| 申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
IVES, JASON B. |
| 分类号 |
E21B34/00;E21B34/10;F16K1/20;F16K39/02;(IPC1-7):E21B34/06 |
主分类号 |
E21B34/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
