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1. (WO2013123221) DRILL RIG MOVING SYSTEM

Pub. No.:    WO/2013/123221    International Application No.:    PCT/US2013/026181
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Fri Feb 15 00:59:59 CET 2013
IPC: E21B 4/16
E21B 15/00
E02F 3/00
Applicants: T&T ENGINEERING SERVICES, INC.
BRYANT, F, Allan
ORGERON, Keith, J.
TREVITHICK, Mark, W.
Inventors: BRYANT, F, Allan
ORGERON, Keith, J.
TREVITHICK, Mark, W.
Title: DRILL RIG MOVING SYSTEM
Abstract:
The present invention discloses a drill rig relocation system. Lift frames are provided at opposite ends of a base box of a drill rig substructure. A lift cylinder and bearing mat assembly are rotatably connected beneath the lift frame. The bearing mat assemblies may be rotated to the desired direction for moving the drill rig. The lift cylinders are then expanded, placing the bearing mat assemblies onto the ground and lifting the base boxes and drill rig off the ground. The drill rig is supported on linear sleeve bearings slideably mounted in the bearing mat assemblies. Translation cylinders on the bearing mats expanded to move the rig by translating the linear sleeve bearings along the shafts. After the lift cylinder expands to place the bearing mat on the ground, the translation cylinders are retracted, providing the linear bearing with the full length of the shaft for the next movement.