Threaded tool joint with dual mating shoulders

Details Threaded tool joint with dual mating shoulders Threaded tool joint with dual mating shoulders

1996-05-07

1998-09-22

Shackelford, Heather

Pipe joints or couplings

Particular interface

Tapered

285355, 285390, F16L 2500

Patent

active

058104011

ABSTRACT:
A tool joint for use in connecting sections of pipe string for use in drilling. The joint is a pin and box connection of the type used in oil well tubing, casing, and the like. The driveable threaded joint has dual mating shoulders and nose faces on the pin and box members. The connection is designed so that compressive loads on the pin and box members are transferred substantially through the pin and box shoulders rather than through the thread form. The dual mating shoulders substantially improve the joint's ability to withstand the intense axial compression loading that occurs when driving the pipe into the ground.

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