公开(公告)号：WO2014151285A2

公开(公告)日：2014-09-25

申请号：PCT/US2014/025374

申请日：2014-03-13

Applicant: WEATHERFORD/LAMB, INC.

Inventor： SMITH, Roddie R. ,  SIDES, Winfield

IPC: E21B34/10

CPC classification number: E21B34/105 ,  E21B2034/005

Abstract: The present invention generally relates to a deepset wireline retrievable safety valve for controlling fluid flow through a production tubing string. In one aspect, a valve for use in a wellbore is provided. The valve includes a housing having a bore. The valve further includes an actuator sleeve movable within the housing between a retracted position and an extended position. The actuator sleeve in the retracted position allows a flapper member to obstruct the bore in the housing. Additionally, the valve includes a first piston member attached to a first side of the actuator sleeve and a second piston member attached to a second side of the actuator sleeve, wherein wellbore fluid pressure acts on the first piston member, which results in a first force, and acts on the second piston, which results in a second force, and the first force and the second force are applied to the actuator sleeve in an opposite direction.

Abstract translation: 本发明一般涉及一种用于控制通过生产油管柱的流体流动的深层钢丝绳可回收安全阀。 一方面，提供了一种用于井眼的阀。 阀包括具有孔的壳体。 所述阀还包括可在所述壳体内在缩回位置和延伸位置之间移动的致动器套筒。 处于缩回位置的致动器套筒允许挡板构件阻塞壳体中的孔。 另外，阀包括附接到致动器套筒的第一侧的第一活塞构件和附接到致动器套筒的第二侧的第二活塞构件，其中井筒流体压力作用在第一活塞构件上，这导致第一力 并且作用在第二活塞上，这导致第二力，并且第一力和第二力沿相反方向施加到致动器套筒。

公开(公告)号：EP2971472A2

公开(公告)日：2016-01-20

申请号：EP14719454.2

申请日：2014-03-13

Applicant: Weatherford/Lamb, Inc.

Inventor： SMITH, Roddie R. ,  SIDES, Winfield

IPC: E21B34/10

CPC classification number: E21B34/105 ,  E21B2034/005

Abstract: The present invention generally relates to a deepset wireline retrievable safety valve for controlling fluid flow through a production tubing string. In one aspect, a valve for use in a wellbore is provided. The valve includes a housing having a bore. The valve further includes an actuator sleeve movable within the housing between a retracted position and an extended position. The actuator sleeve in the retracted position allows a flapper member to obstruct the bore in the housing. Additionally, the valve includes a first piston member attached to a first side of the actuator sleeve and a second piston member attached to a second side of the actuator sleeve, wherein wellbore fluid pressure acts on the first piston member, which results in a first force, and acts on the second piston, which results in a second force, and the first force and the second force are applied to the actuator sleeve in an opposite direction.