发明名称 |
TUBING INSERTION AND WITHDRAWAL APPARATUS FOR USE WITH A LIVE WELL |
摘要 |
A coiled tubing injector for inserting and withdrawing a continuous length of tubing from a well, the coiled tubing injector having a tubing insertion and withdrawal assembly with a tubing conveyor assembly moving the tubing upward for withdrawal from the well and downward for insertion into the well. The tubing conveyor assembly has a fixed conveyor and an opposing floating conveyor each with a plurality of gripper blocks that engage the tubing. Each gripper block has a groove having a radius of curvature substantially that of the tubing to provide a close mating relationship of the gripper blocks and the tubing. The floating conveyor is moveable away from the fixed conveyor to create a gap therebetween, and the frame is provided an opening aligned with the gap between the fixed and floating conveyors so that a medial portion of the tubing can pass through the opening into the gap. A conveyor stabilizing assembly draws the floating conveyor toward the fixed conveyor to provide stabilizing support to the floating conveyor, and a grip adjustment assembly draws the fixed and floating conveyors together to close the gap and exert a gripping force on the tubing.
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申请公布号 |
CA2261413(A1) |
申请公布日期 |
1999.08.12 |
申请号 |
CA19992261413 |
申请日期 |
1999.02.11 |
申请人 |
WESTBURY SERVICE COMPANY, L.L.C., DOING BUSINESS AS DOWNHOLE INJECTION S YSTEMS |
发明人 |
BUTLER, WILBUR T. |
分类号 |
E21B19/00;(IPC1-7):E21B19/00 |
主分类号 |
E21B19/00 |
代理机构 |
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代理人 |
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地址 |
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