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Drilling rig masts and methods of assembly and erecting masts

  • US 20090218144A1
  • Filed: 02/29/2008
  • Published: 09/03/2009
  • Est. Priority Date: 02/29/2008
  • Status: Active Grant
First Claim
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1. A method for connection two parts of a mast of a drilling rig, the method comprisingconnecting a bottom mast section to a support, the bottom mast section having bottom connection apparatus,moving a second mast section adjacent the bottom mast section, the second mast section releasably connected to a vehicle and said moving done by moving said vehicle, the second mast section having second connection apparatus, andmoving the bottom mast section so that the bottom connection apparatus contacts the second connection apparatus and engages the second connection apparatus to secure the bottom mast section to the second mast section.

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