Pipe gripper and top drive systems

Details Pipe gripper and top drive systems Pipe gripper and top drive systems

2006-06-06

2006-06-06

Bagnell, David (Department: 3672)

Wells

Above ground apparatus

With assembly or disassembly means

C166S077510, C166S379000, C175S085000

Reexamination Certificate

active

07055594

ABSTRACT:
A top drive drilling system, in at least some aspects, having a top drive unit, and a pipe gripping system beneath the top drive unit which has an open throat for receiving a tubular to be gripped by the pipe gripping system; and, in at least certain aspects, the gripping system having a body with first and second jaws movably connected thereto and piston/cylinder devices movably interconnected with each jaw for moving the jaws to clamp and then to rotate the pipe.

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