LINEAR COILED TUBING INJECTOR

摘要

An injector is provided for injecting and withdrawing large diameter coiled tubing comprising a linear section of gripping blocks driven on an endless chain conveyor. The coiled tubing is forced into frictional engagement with the blocks by a corresponding linear array of rollers. The arrangement is gentle on the coiled tubing. The injector is not restricted in length and thus provide s a linear driving section of configurable length for providing superior injecti on and pulling capacities. In combination with the strong draw works, mast and rota ry table of a conventional rig enabling making up both sectional tubing for assembling BHA's, drilling surface hole and making up to non-rotating coiled tubing from the injector.