公开(公告)号：US06250383B1

公开(公告)日：2001-06-26

申请号：US09531945

申请日：2000-03-21

申请人： Dinesh R. Patel

发明人： Dinesh R. Patel

IPC分类号： E21B2308

CPC分类号： E21B23/006 ,  E21B21/10 ,  E21B33/10 ,  E21B34/101 ,  E21B34/102 ,  E21B34/108 ,  E21B2021/006 ,  E21B2034/002 ,  Y10T137/86944

摘要： A system usable with a subterranean well includes a tubing and a lubricator. The tubing is adapted to receive a drill string in a passageway of the tubing, and the lubricator is located downhole and is connected to the tubing. The lubricator is adapted to be remotely operable from a surface of the well to control fluid communication between the passageway located above the lubricator and a formation located beneath the lubricator. The lubricator may include a sleeve and controller. The controller selectively moves the sleeve into a passageway of a valve of the lubricator to protect the valve from a downhole fluid.