公开(公告)号：WO2005100740A3

公开(公告)日：2005-12-22

申请号：PCT/US2005011634

申请日：2005-04-07

Applicant: BAKER HUGHES INC

Inventor： DRUMMOND STEVEN J ,  FARQUHAR GRAHAM

IPC: E21B23/00 ,  E21B34/00 ,  E21B34/06 ,  G09F3/20 ,  G09F23/00

CPC classification number: E21B34/06 ,  E21B23/006 ,  E21B2034/005 ,  G09F3/20 ,  G09F23/00

Abstract: A valve assembly comprises a flapper element and a valve opening assembly that will mechanically open the flapper element. The valve opening assembly is particularly valuable where the flapper element fails to open in response to normal hydraulic opening techniques. The valve opening assembly includes a valve opening sleeve having a generally hemispherical cross-section and an opening portion that presents a pair of opening shoulders. The opening shoulders engage lugs on the flapper element so that movement of the opening sleeve will urge the flapper element to an open position. The valve assembly may be run into the wellbore with the flapper element in the open position, rather than having to be closed, as with a number of conventional valve assemblies.

Abstract translation: 阀组件包括挡板元件和将打开挡板元件的阀开启组件。 阀门开启组件在挡板元件响应于正常的液压开启技术不能打开时特别有价值。 阀开启组件包括具有大致半球形截面的阀开启套筒和具有一对开口肩部的开口部分。 开口肩部接合挡板元件上的凸耳，使得开口套筒的运动将推动挡板元件到打开位置。 阀组件可以在挡板元件处于打开位置时进入井眼，而不必像许多常规的阀组件一样被关闭。