Integrated mast and top drive for drilling rig

Details Integrated mast and top drive for drilling rig Integrated mast and top drive for drilling rig

2005-03-01

2005-03-01

Smith, Scott A. (Department: 3721)

Tool driving or impacting

With vehicle support for drive

Drive structure moved to nonuse position for transport

C173S027000, C173S001000, C173S025000

Reexamination Certificate

active

06860337

ABSTRACT:
A process to lower or raise a drilling rig for transportation wherein the drilling rig includes a mast and a top drive. The process to lower includes the steps of moving the top drive within the mast with a vertical guide and torque reaction mechanism to a locked position and locking the top drive to the mast with a locking mechanism. The mast and the top drive are lowered together from a vertical position to a horizontal position. The combined mast and top drive may then be transported in the horizontal position without disconnecting electrical, mud line or other services.

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