发明名称 |
BIDIRECTIONAL DOWNHOLE ISOLATION VALVE |
摘要 |
An isolation valve for use in a wellbore includes: a housing; a piston longitudinally movable relative to the housing; a flapper carried by the piston for operation between an open position and a closed position, the flapper operable to isolate an upper portion of a bore of the valve from a lower portion of the bore in the closed position; an opener connected to the housing for opening the flapper; and an abutment configured to receive the flapper in the closed position, thereby retaining the flapper in the closed position. |
申请公布号 |
US2017089157(A1) |
申请公布日期 |
2017.03.30 |
申请号 |
US201615374326 |
申请日期 |
2016.12.09 |
申请人 |
Weatherford Technology Holdings, LLC |
发明人 |
NOSKE Joe |
分类号 |
E21B21/10;E21B34/06;E21B34/14 |
主分类号 |
E21B21/10 |
代理机构 |
|
代理人 |
|
主权项 |
1. An isolation valve for use in a wellbore, comprising:
a housing; a flapper movable between an open position and a closed position, the flapper operable to isolate an upper portion of a bore of the valve from a lower portion of the bore in the closed position; and a pressure bypass operable to bypass the closed flapper when a predetermined pressure is reached. |
地址 |
Houston TX US |