Abstract

A new dry tree semisubmersible concept is developed based on the proven technologies of a conventional four-column deep draft semi-submersible. The columns are sized to provide hull stability, and an independent jacket frame is inserted for supporting the deck. In this way, the goals of long heave natural period and adequate hull stability can be achieved. This article presents engineering analysis; computer simulation, model test validation, and mooring system optimization are carried out in the investigation of the proposed concept. The paper concludes that the new concept has robust performance and offers a cost-effectiveness solution to deepwater oil and gas exploration.

Keywords:
new concept, platform, subsea system, numerical motion calibration, zhang cotec offshore engineering solution, simulation, model test, environment condition, calibration, dry tree semi-submersible xl
Subjects:
Offshore Facilities and Subsea Systems, Mooring systems
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2014. International Society of Offshore and Polar Engineers
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