公开(公告)号：EP1330590A1

公开(公告)日：2003-07-30

申请号：EP01978643.3

申请日：2001-10-30

申请人： Coupler Developments Limited

发明人： AYLING, Laurence John

IPC分类号： E21B19/16 ,  E21B21/00

CPC分类号： E21B33/085 ,  E21B19/16 ,  E21B33/068 ,  E21B2021/006

摘要： A coupler and a method for continuously circulating a drilling fluid through a drill string while adding or removing tubulars has a lower fluid pressure seal adapted to engage a drill string; lower grips adapted to engage a drill string; a valve positioned above said lower grips; upper grips adapted to engage a tubular to be added to or removed from said string; and an upper fluid pressure seal adapted to engage said tubular.

公开(公告)号：EP1660753A1

公开(公告)日：2006-05-31

申请号：EP04768064.0

申请日：2004-08-16

申请人： COUPLER DEVELOPMENTS LIMITED

发明人： AYLING, Laurence John

IPC分类号： E21B19/16 ,  E21B33/068 ,  E21B33/08 ,  E21B21/10 ,  F16K5/06 ,  F16K5/02

摘要： Apparatus and a method for adding and removing tubulars whilst containing the pressure within a drill string and/or maintaining circulation of drilling fluid down a drill string using a diverter sub which is able to open up to mud flow from a side mud port and close off the flow of mud from above the drill string with or without continuous rotation of the drill string.