Wellbore top drive systems

Details Wellbore top drive systems Wellbore top drive systems

2008-01-22

2008-01-22

Gay, Jennifer H. (Department: 3676)

Boring or penetrating the earth

With above-ground guide for relatively advancing tool

C175S162000, C175S113000, C173S213000, C166S077510, C277S377000

Reexamination Certificate

active

07320374

ABSTRACT:
A system for wellbore operations, the system, in at least certain aspects, including a derrick, a guide beam connected to the derrick, a top drive movable on the guide beam, torque reaction structure connected to the guide beam and to the derrick, skid apparatus held by the torque reaction structure, the skid apparatus movable vertically with respect to the torque reaction structure to prevent a vertical load from passing from the skid apparatus to the torque reaction structure.

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Int'l Search Report; PCT/GB2005/050085; 5 pages; Feb. 28, 2006.
Written Opinion; PCT/GB2005/050085; 7 pages; Feb. 28, 2006.

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