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Mobile rig and method

  • US 9,260,929 B2
  • Filed: 06/21/2012
  • Issued: 02/16/2016
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
First Claim
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1. A mobile rig for lowering a string comprising joints of conduit into a well, the system comprising:

  • a rig transporter comprising a motorized unit;

    a mast assembly;

    a pivotal connection on said mast assembly, wherein said pivotal connection is positioned on an upper end of a first rail of a Y-base, wherein said Y-base is attached to a rear of said rig transporter, wherein said Y-base has a support plate positioned on an upper end of a rear most rail of said Y-base, and wherein said support plate only supports said mast assembly when said mast assembly is raised to an upright position;

    at least one hydraulic arm pivotally mounted to said rig transporter and said mast assembly, wherein said at least one hydraulic arm is powered by said motorized unit and is operable for moving said mast assembly to said upright position and for lowering said mast assembly to a substantially horizontal position for transportation, said rig transporter having a height of less than or equal to 18 feet when said mast assembly is positioned in said substantially horizontal position for transportation; and

    a hydraulically powered pipe tong for use in making up said joints of conduit secured to said mast assembly, said hydraulically powered pipe tong being mounted to said mast assembly so as to be raised with said mast assembly to said upright position and lowered with said mast assembly to said substantially horizontal position of said mast assembly for transportation while attached to said mast assembly, wherein said hydraulically powered pipe tong is powered by said motorized unit.

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