公开(公告)号：US3822745A

公开(公告)日：1974-07-09

申请号：US34901073

申请日：1973-04-09

申请人： HYDRIL CO

发明人： HOUSTON J

IPC分类号： E21B34/06 ,  E21B34/08 ,  E21B34/14 ,  E21B41/00

CPC分类号： E21B34/06 ,  E21B34/08 ,  E21B34/14

摘要： A completion and kill valve adapted to be placed immediately above a packer in the well production tubing including a tubular member having an inner bore and a circulation channel therein permitting communication between the inner bore and the well annulus area adjacent the exterior of the tubular member. A movable sleeve closes or opens communication through the circulation channel in response to various pressures and a spring bias acting on the sleeve. Provisions for locking the sleeve in the open position and subsequently unlocking the sleeve in response to inner bore pressure are provided.

摘要翻译： 一种完井和杀死阀，其适于立即放置在生产油管中的封隔器正上方，包括管状构件，管状构件具有内孔和其中的循环通道，允许内孔与邻近管状构件外部的井环区域连通。 响应于各种压力和作用在套筒上的弹簧偏压，可移动套筒通过循环通道闭合或打开连通。 提供了将套筒锁定在打开位置并随后响应于内孔压力而解锁套筒的设置。