Patent ID: 8556003
Filing Date: 2013-10-15
Classification: E21B

Abstract:
1. A substructure of a drill rig, the substructure comprising: a base; an intermediate section that is adapted to be raised above said base, wherein said intermediate section is further adapted to be laterally moved in a first lateral direction relative to said base and maintained substantially parallel to said base during said raising of said intermediate section above said base; a rig floor section that is adapted to be raised above said intermediate section, wherein said rig floor section is further adapted to be laterally moved in a second lateral direction relative to said base and maintained substantially parallel to said base during said raising of said rig floor section above said intermediate section, said second lateral direction being substantially opposite to said first lateral direction; and a hydraulic cylinder apparatus that is adapted to be pivotably connected to at least said base, said hydraulic cylinder apparatus being adapted to raise at least one of said intermediate section above said base and said rig floor section above said intermediate section.