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Slingshot side saddle substructure

  • US 9,708,861 B2
  • Filed: 02/06/2015
  • Issued: 07/18/2017
  • Est. Priority Date: 02/13/2013
  • Status: Active Grant
First Claim
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1. A land based drilling rig comprising:

  • a first and second lower box, the lower boxes positioned generally parallel and spaced apart from each other;

    a drill floor coupled to the first lower box by a first strut, the first lower box and first strut defining a first substructure, the drill floor coupled to the second lower box by a second strut, the second lower box and second strut defining a second substructure, the struts hingedly coupled to the drill floor and hingedly coupled to the corresponding lower box such that the drill floor may pivot between an upright and a lowered position, the drill floor including a V-door, the V-door oriented perpendicularly to a long axis of one of the substructures;

    a mast coupled to the drill floor;

    a tank support structure affixed to the first or second substructure, the tank support structure including;

    a tank;

    mud process equipment; and

    a grasshopper positioned to carry cabling and lines to the drilling rig, the grasshopper positioned to couple to the drill floor generally at a side of the drill floor, and the side of the drill floor to which the grasshopper couples is oriented perpendicular to a long axis of the first or second substructure.

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