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Mobile drilling rig with telescoping substructure boxes

  • US 9,366,053 B2
  • Filed: 06/23/2015
  • Issued: 06/14/2016
  • Est. Priority Date: 04/17/2012
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • assembling a telescoping substructure box comprising first and second substructure boxes in a collapsed configuration, said first substructure box comprising a first end frame and said second substructure box comprising a plurality of structural elements that are assembled to define a substantially open interior space and a substantially open second end frame, wherein assembling said telescoping substructure box comprises inserting said first end frame of said first substructure box through said substantially open second end frame of said second substructure box and nesting at least a portion of said first substructure box inside of said substantially open interior space of said second substructure box;

    transporting said assembled telescoping substructure box to a drilling site;

    telescopically raising said telescoping substructure box from said collapsed transportation configuration to a raised operating configuration for performing drilling operations on a wellbore location of said drilling site by telescopically raising one of said first and second substructure boxes relative to the other one of said first and second substructure boxes;

    coupling a drilling mast to said telescoping substructure box;

    raising said drilling mast above said telescoping substructure box; and

    performing drilling operations on said wellbore location with said raised drilling mast.

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