公开(公告)号：US10077631B2

公开(公告)日：2018-09-18

申请号：US14853356

申请日：2015-09-14

Applicant: BAKER HUGHES INCORPORATED

Inventor： Samuel C. Kucera ,  Brett C. Jones ,  Jason W. Edwards

IPC: E21B34/10

CPC classification number: E21B34/101

Abstract: An equalizer valve is hydraulically operated by a pair of control lines running from a remote location such as a well surface. The use of control lines to make a mandrel or piston move in opposed directions removes the need for a spring or compressed gas to act as a spring against the anticipated hydrostatic force in a single control line system that is dependent on setting depth. The equalizer valve with its pair of control lines is insensitive to setting depth. Three seals on the mandrel are used to move the mandrel with the two control lines in opposed directions and to apply a net force to the mandrel. The seal applying the net closure force is exposed to a low or atmospheric chamber to make the second seal operate reliably using a large differential.

公开(公告)号：US20170074068A1

公开(公告)日：2017-03-16

申请号：US14853356

申请日：2015-09-14

Applicant: Baker Hughes Incorporated

Inventor： Samuel C. Kucera ,  Brett C. Jones ,  Jason W. Edwards

IPC: E21B34/10

CPC classification number: E21B34/101

Abstract: An equalizer valve is hydraulically operated by a pair of control lines running from a remote location such as a well surface. The use of control lines to make a mandrel or piston move in opposed directions removes the need for a spring or compressed gas to act as a spring against the anticipated hydrostatic force in a single control line system that is dependent on setting depth. The equalizer valve with its pair of control lines is insensitive to setting depth. Three seals on the mandrel are used to move the mandrel with the two control lines in opposed directions and to apply a net force to the mandrel. The seal applying the net closure force is exposed to a low or atmospheric chamber to make the second seal operate reliably using a large differential.

Abstract translation: 均衡阀由一对从远程位置（例如井表面）运行的控制线液压操作。 使用控制线使心轴或活塞沿相反的方向移动，消除了弹簧或压缩气体在依赖于设定深度的单个控制线系统中作为弹簧抵抗预期的静水力的需要。 具有一对控制线的均衡阀对设定深度不敏感。 心轴上的三个密封件用于使两个控制线在相反的方向上移动心轴，并向心轴施加净力。 施加净关闭力的密封件暴露于低或大气室，以使第二密封件使用大的差速器可靠地工作。