Low ground pressure and amphibious coring system

Details Low ground pressure and amphibious coring system Low ground pressure and amphibious coring system

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) E21B 15/00 (2006.01) E21B 19/14 (2006.01) E21B 25/00 (2006.01)

Patent

CA 2633961

An amphibious coring apparatus is provided for operations on ground including wetlands. A rig deck is supported above a substructure. The substructure has mobile, low ground pressure, wetland-engaging ground components. Between the deck and the substructure is an articulation interface for leveling the rig deck. A top drive is movable in a derrick for rotating a drill string. Hydraulic rams supported from the deck raise and lower the top drive, such as by a cable extending over a sheave at a top end of each ram. A pipe handler racks pipe to and from multiple tiers and a live bottom trough assists with tripping pipe.

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