Back to results
US 2013/0075102 A1Published application
Mobile offshore drilling unit
OwnerBui V. Daoinventor
Life of this patent
Estimating the term…
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.
Claims5
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.
2 more elements
Dependencies are inferred from the claim text.