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Modular drilling rig substructure

DC
  • US 6,848,515 B2
  • Filed: 04/24/2003
  • Issued: 02/01/2005
  • Est. Priority Date: 04/24/2003
  • Status: Expired due to Fees
First Claim
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1. A process to transport and assemble a drilling rig substructure, which process comprises:

  • transporting a driller side substructure section having a floor and a base and transporting an off driller side substructure section having a floor and a base to a rig site so that said sections are spaced from and parallel to each other;

    transporting a center substructure section to said rig site;

    moving said center substructure section into a space between said driller side section and said off driller side section;

    connecting said center substructure section to said driller side and to said off driller side substructure section; and

    raising a floor of said driller side substructure section and raising a floor of said off driller side substructure section while both connected to said center substructure section from a transport position to a use position while maintaining said floors parallel to said bases.

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