Walking substructure device
AssigneeParker Drilling Company
InventorLowell M. Reed
Life of this patent
Estimating the term…
Abstract
A walking substructure device having a drilling rig substructure. A plurality of lifting jacks is provided, each lifting jack having an upper end and a lower end, the upper end connected to the drilling rig substructure. A plurality of roller assemblies is provided, each roller assembly connected to the lower end of one of the jacks, each roller assembly pivotal radially about an axis of the lifting jack. A plurality of jack pads is provided, with each jack pad having a center beam wherein one of the roller assemblies engages the center beam and rolls thereon. A push-pull mechanism extends between each jack pad and each roller assembly in order to move the shoe assemblies in relation to the drilling substructure.
Claims15
A walking substructure device, which comprises:
- a drilling rig substructure;
- a plurality of lifting jacks, each said lifting jack having an upper end and a lower end, each said upper end connected to said drilling rig substructure;
- a plurality of roller assemblies, one roller assembly connected to said lower end of each of said lifting jacks, each said roller assembly pivotal radially about an axis of said lifting jack;
- a plurality of jack pads, each said jack pad having a center beam wherein one said roller assembly engages one of said beams and rolls thereupon each said jack pad rotatable radially with its corresponding roller assembly about said axis to any desired position of 360.degree.;
- and
- a push-pull mechanism extending between each said jack pad and each said roller assembly to move the jack pad in relation to said drilling rig substructure.
A process to move a drilling rig substructure, which process comprises:
- rotating a plurality of lifting jacks wherein each said lifting jack is rotated any desired radial orientation of 360.degree. about an axis, each said lifting jack having an upper end connected to said drilling rig substructure and a lower end connected to a roller assembly;
- extending said plurality of lifting jacks so that a jack pad connected to each roller assembly engages ground level;
- raising said drilling rig substructure from said ground level by extending said plurality of lifting jacks;
- moving said substructure in incremental amounts by moving said substructure with relation to said jack pads;
- and
- lowering said drilling rig substructure by retracting said plurality of lifting jacks.
Dependencies are inferred from the claim text.