公开(公告)号：EP3191681A4

公开(公告)日：2018-05-02

申请号：EP14901650

申请日：2014-09-09

申请人： HALLIBURTON ENERGY SERVICES INC

发明人： ARIAN ABBAS ,  MACKAY BRUCE

IPC分类号： F04B7/02 ,  E21B49/08 ,  F04B53/10 ,  F16K15/04 ,  F16K15/18

CPC分类号： F16K15/183 ,  E21B34/06 ,  E21B43/121 ,  E21B49/082 ,  E21B2034/002 ,  F04B7/0266 ,  F04B53/1002 ,  F16K15/044 ,  F16K15/186 ,  F16K31/1221 ,  F16K31/42

摘要： An assembly is provided that can include check valve. The check valve can include a ball positioned between an inflow line and an outflow line. The ball can be movable between (i) an open position at which a fluid is allowed to flow between the inflow line and the outflow line and (ii) a closed position at which the fluid is prevented from flowing between the inflow line and the outflow line. The assembly can also include a spring positioned adjacent to the ball and operable to bias the ball in a closed position. The assembly can further include a poppet positioned adjacent to the ball. The poppet can be movable in response to a communication of a pilot pressure to the poppet. Further, the ball can be movable to the closed position in response to a force applied by the poppet.