Mobile drilling rig with replaceable dolly

Details Mobile drilling rig with replaceable dolly Mobile drilling rig with replaceable dolly

2006-03-15

2009-12-08

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

With above-ground means to advance or retract boring means

C175S202000, C175S089000

Reexamination Certificate

active

07628229

ABSTRACT:
Mobile drilling rig10includes a carrier frame14and a mast12supported on the frame. A top drive16is supported on the mast when in an operative position, and a coil tubing injector20is supported on the mast when in an operative position. A first dolly assembly22and a second dolly assembly60are provided each for supporting a portion of the carrier frame, and include a first plurality of wheels on a first plurality of axles. Each dolly assembly is adaptive for selective attachment to and detachment from the carrier frame, so that the dolly assemblies may be changed out for compliance with regulations and road conditions.

REFERENCES:
patent: 6371505 (2002-04-01), Turner, II
patent: 6767172 (2004-07-01), French et al.
patent: 6973979 (2005-12-01), Carriere et al.
patent: 7308953 (2007-12-01), Barnes
patent: 2004/0211598 (2004-10-01), Palidis
patent: 2004/0240973 (2004-12-01), Andrews et al.
patent: 2005/0193645 (2005-09-01), Barnes
patent: 2005/0194189 (2005-09-01), Barnes

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