公开(公告)号：EP1957747B1

公开(公告)日：2012-10-10

申请号：EP06848998.8

申请日：2006-11-30

申请人： Weatherford/Lamb Inc.

发明人： VOLD, Gisle ,  ABRAHAMSEN, Egill ,  VESTERSJO, Svein Egil ,  BAUSTAD, Terje ,  STOKKELAND, Kaj ,  HAUGEN, David M.

IPC分类号： E21B19/10 ,  E21B17/10 ,  E21B19/16

CPC分类号： E21B19/16 ,  E21B17/1035

公开(公告)号：EP1957747A2

公开(公告)日：2008-08-20

申请号：EP06848998.8

申请日：2006-11-30

申请人： Weatherford/Lamb Inc.

发明人： VOLD, Gisle ,  ABRAHAMSEN, Egill ,  VESTERSJO, Svein Egil ,  BAUSTAD, Terje ,  STOKKELAND, Kaj ,  HAUGEN, David M.

IPC分类号： E21B19/10

CPC分类号： E21B19/16 ,  E21B17/1035

摘要： A protection tool is provided to protect a control line in a safe area while one or more slips of a spider are being closed. In another embodiment, a safety interlock system is provided to prevent the closing of the slips before the control line is pulled away from the tubular string. In yet another embodiment, a safety interlock system includes a safety interlock trigger adapted to be actuated by a protection tool. The safety interlock trigger is adapted to detect the physical presence of the protection tool, and thereafter send a signal to the interlock system to enable an operator or a control mechanism to safely close the slips.