| 摘要 |
A vehicle carries a hydraulic reservoir, a pump, a portable fluid-distributing valve, four or more hydraulic rams and conduits connecting the reservoir, pump, valve and rams in a hydraulic circuit such that the valve and rams may be removed from the vehicle. The rams are then connected to a BOP and beams under the rig floor; the valve is held by an operator a safe distance from the BOP and manipulated to uniformly and safely lift the BOP.
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