Inventors:
Floyd R. Gunsaulis - Perry OK, US
David R. Payne - Perry OK, US
Michael L. Anderson - Pleasanton CA, US
Assignee:
The Charles Machines Works, Inc. - Perry OK
International Classification:
E21B007/04
E21B004/20
F16L001/028
US Classification:
175 62, 175 61, 175263, 175106, 4051843, 4051541
Abstract:
An apparatus for bursting pipe is preferably adapted to receive rotational energy from the inner member of a dual-member drill string. In a preferred embodiment, an oscillating pipe-bursting member, driven by the interconnected inner members, cuts or bursts a subterranean pipe. In another preferred embodiment, a screw drive moves a pipe-bursting member between an expanded position and a retracted position. In another preferred embodiment, the pipe-bursting member is an arm moveable in response to operation of a screw drive. In yet another preferred embodiment, the pipe-bursting member is hydraulically actuated. This invention increases the efficiency of pipe-bursting operations by utilizing rotation energy generated by a horizontal directional boring system.