发明名称 METHOD AND PORTABLE APPARATUS FOR FORCING A PIPELINE INTO OR OUT OF A BOREHOLE
摘要 A portable pipe thrusting apparatus for thrusting a pipe into and out of an earthen formation during a thrusting operation is disclosed. The portable pipe thrusting apparatus includes a collar configured to releasably grip the pipe, a support frame, at least one rear leg assembly coupled to a rear end of the support frame, and a bi-directional driver coupled to the collar and the support frame. The rear leg assembly is configured to move the rear end of the support frame between a lowered position and a raised position to align the pipe for the thrusting operation. The bi-directional driver is configured to drive the collar toward and away from the earthen formation to insert and remove the pipe from the earthen formation.
申请公布号 EP2737162(A4) 申请公布日期 2016.04.06
申请号 EP20120820099 申请日期 2012.07.30
申请人 CHERRINGTON, MARTIN 发明人 CHERRINGTON, MARTIN
分类号 E21B19/08;E21B7/04;E21B17/01;E21B19/24 主分类号 E21B19/08
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