公开(公告)号：US5850874A

公开(公告)日：1998-12-22

申请号：US635114

申请日：1996-04-19

申请人： Philip Burge ,  Peter Fontana ,  Glenn Leroux ,  Friedhelm Makhol

发明人： Philip Burge ,  Peter Fontana ,  Glenn Leroux ,  Friedhelm Makhol

IPC分类号： B65H75/22 ,  E21B15/00 ,  E21B19/00 ,  E21B19/02 ,  E21B19/08 ,  E21B19/09 ,  E21B19/22 ,  E21B33/068 ,  E21B33/076

CPC分类号： B65H75/22 ,  E21B15/00 ,  E21B19/00 ,  E21B19/002 ,  E21B19/02 ,  E21B19/08 ,  E21B19/09 ,  E21B19/22 ,  E21B33/068 ,  E21B33/076

摘要： The present invention provides a drilling rig which includes an electrically-controllable tubing injection system. The injection system contains a fixed injector head with two movable injection blocks which are remotely operable to provide a desired opening therebetween. Each injection block contains a plurality of gripping members for holding a range of tubing sizes. The injection blocks automatically adjust to provide the required gripping force and tubing speed according to programmed instructions. A resilient tubing guidance system is positioned above the injector head directs the tubing into the injector head. The rig system contains sensors for determining the radial force on the tubing exerted by the injector head, tubing speed, injector head speed, weight-on-bit during the drilling operations, bulk weight of the drill string, compression of the tubing guidance memeber during operations and the back tension on the tubing reel. During operations, a control unit continually maintains the tubing speed, tension on chains in the injector head, radial pressure on the tubing within predetermined limits. Additionally, the control unit maintains the back tension on the reel and the position of the tubing guidance system within their respective predetermined limits. The control unit also controls the operation of the wellhead equipment. During removal of the tubing from the wellbore, the control unit operates the reel and the injector head to remove the tubing from the wellbore.

摘要翻译： 本发明提供一种钻机，其包括电可控管道注射系统。 注射系统包含具有两个可移动注射块的固定的注射器头，其可远程操作以在其间提供期望的开口。 每个注射块包含用于保持一定范围的管尺寸的多个夹持构件。 注射块自动调节以根据编程说明提供所需的夹紧力和油管速度。 弹性管引导系统位于注射器头上方，将管道引导到注射器头部。 钻机系统包含用于确定由喷射头施加的管道上的径向力的传感器，管道速度，喷射头速度，钻井操作期间的重量，钻柱的体积重量，管道引导构件的压缩 操作和油管卷轴上的反向张力。 在操作期间，控制单元持续地保持管速度，喷射器头部链上的张力，管道上的径向压力在预定限度内。 此外，控制单元将卷轴上的背张力和管引导系统的位置保持在它们各自的预定限度内。 控制单元还控制井口设备的操作。 在从井眼移除管道期间，控制单元操作卷轴和喷射器头部以从井筒中移除管道。