Split sub-basement drill rig

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United States of America Patent

PATENT NO 8556003
APP PUB NO 20110114386A1
SERIAL NO

12947006

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A substructure of a drill rig includes, among other things, a base and an intermediate section that is adapted to be raised above the base, wherein the intermediate section is further adapted to be laterally moved in a first lateral direction relative to the base and maintained substantially parallel to the base during the raising of the intermediate section above the base. The substructure further includes a rig floor section that is adapted to be raised above the intermediate section, wherein the rig floor section is further adapted to be laterally moved in a second lateral direction relative to the base and maintained substantially parallel to the base during the raising of the rig floor section above the intermediate section, the second lateral direction being opposite to the first lateral direction.

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Patent Owner(s)

  • NATIONAL OILWELL VARCO, L.P.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Souchek, Richard Dwaine Richmond, US 4 78

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