公开(公告)号：EP2142752B1

公开(公告)日：2012-08-01

申请号：EP08746970.6

申请日：2008-04-25

申请人： Weatherford/Lamb Inc.

发明人： PIETRAS, Bernd-georg ,  ABRAHAMSEN, Egill

IPC分类号： E21B19/16

CPC分类号： E21B19/16 ,  E21B19/10 ,  E21B19/165 ,  E21B41/0021

摘要： Apparatus and methods are provided to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. In one embodiment, an interlock system is used to control the operations of a gripping apparatus connected to the top drive and a spider such that at least one of the top drive or the spider retains the tubular. The interlock system allows the spider to open when the gripping apparatus is supporting a load of the tubular or is in position to support a load of the tubular.

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：EP2142752A2

公开(公告)日：2010-01-13

申请号：EP08746970.6

申请日：2008-04-25

申请人： Weatherford/Lamb Inc.

发明人： PIETRAS, Bernd-georg ,  ABRAHAMSEN, Egill

IPC分类号： E21B19/16 ,  E21B47/00

CPC分类号： E21B19/16 ,  E21B19/10 ,  E21B19/165 ,  E21B41/0021

摘要： Apparatus and methods are provided to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. In one embodiment, an interlock system is used to control the operations of a gripping apparatus connected to the top drive and a spider such that at least one of the top drive or the spider retains the tubular. The interlock system allows the spider to open when the gripping apparatus is supporting a load of the tubular or is in position to support a load of the tubular.

摘要翻译： 提供了装置和方法以防止操作员在装配和拆卸管件期间不小心地将绳索掉入井筒中。 在一个实施例中，联锁系统用于控制连接到顶部驱动器和星形轮的夹持装置的操作，使得顶部驱动器或星形轮中的至少一个保持管。 当夹持装置支撑管状物的负载或者处于支撑管状物负载的位置时，联锁系统允许星状物打开。

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.