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MOBILE OFFSHORE DRILLING UNIT

  • US 20130075102A1
  • Filed: 03/29/2011
  • Published: 03/28/2013
  • Est. Priority Date: 03/29/2010
  • Status: Abandoned Application
First Claim
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1. A semisubmersible mobile offshore drilling unit (MODU), comprising:

  • a submersible lower hull comprising a ring pontoon having a trapezoidal shape;

    an upper hull having the trapezoidal shape;

    three stability columns supporting the upper hull from the lower hull; and

    a drilling rig.

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