Technique for administering a lubricant in an underground pipe r

Details Technique for administering a lubricant in an underground pipe r Technique for administering a lubricant in an underground pipe r

1998-03-02

2000-03-21

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

With forming or cutting of pipe or cable

405154, 405184, 405303, F16L 5518, F16L 100

Patent

active

060395052

ABSTRACT:
The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is employed to determine the skin friction and the penetration friction, and to dispense a lubricant to reduce such frictional forces.

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