MOBILE OFFSHORE DRILLING UNIT
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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Abstract
A semisubmersible mobile offshore drilling unit (MODU) includes 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. The MODU may be operated in a tender assist mode or an independent drilling mode. The MODU may be equipped to prepare, drill, and complete a subsea wellbore or to workover an existing subsea wellbore.
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Citations
5 Claims
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1. A semisubmersible mobile offshore drilling unit (MODU), comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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Specification