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Bi-directionally raisable drilling rig mast

  • US 8,904,716 B2
  • Filed: 04/23/2013
  • Issued: 12/09/2014
  • Est. Priority Date: 04/24/2012
  • Status: Active Grant
First Claim
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1. A bi-directional drilling rig mast connection system, comprising:

  • a first mast section having first and second spaced-apart sides and comprising a first bi-directional connection apparatus positioned at an upper end thereof; and

    a second mast section having first and second spaced-apart sides and comprising a second bi-directional connection apparatus positioned at a lower end thereof, wherein said second bi-directional connection apparatus is adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective first sides of said first and second mast sections are oriented in a substantially upward direction, said second bi-directional connection apparatus being further adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective second sides of said first and second mast sections are oriented in said substantially upward direction.

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