公开(公告)号：US3818986A

公开(公告)日：1974-06-25

申请号：US19422871

申请日：1971-11-01

Applicant: DRESSER IND

Inventor： ABNEY D ,  WILLIAMS R ,  GILBERT H

IPC: E21B33/12 ,  E21B34/12 ,  E21B43/04 ,  E21B43/10

CPC classification number: E21B33/12 ,  E21B34/12 ,  E21B43/045

Abstract: The apparatus and method provides the ability to selectively treat a producing zone in a well and to gravel pack an annulus in the well casing outside a screen type liner pipe. A tubing string extending from the surface of the well bore is connected to a packer by a crossover valve. Flow down the tubing string is directed to an annulus below the packer, then inwardly through the screen type liner, then upward through the crossover into the annulus above the packer and then to the earth''s surface. Communication from the crossover to the annulus above the packer may be selectively closed to permit a treating pressure to be exerted down the tubing to force a treating fluid into the producing zone. The treating pressure is isolated from the casing above the packer to protect the casing above the packer.

Abstract translation: 该设备和方法提供了选择性地处理井中的生产区并且将井眼中的环形物料砾石包装在屏幕型衬管外部的井套管中的能力。 从井眼表面延伸的管柱通过交叉阀连接到封隔器。 将油管柱向下流动导向封隔器下方的环形空间，然后向内通过筛网型衬套，然后向上通过交叉进入封隔器上方的环形空间，然后到达地球表面。 可以选择性地关闭从交换器到封隔器上方的环形空间的通信，以使处理压力沿着管道施加以迫使处理流体进入生产区域。 处理压力与封隔器上方的外壳隔离，以保护封隔器上方的外壳。