A Functional Method for the Optimization of Offshore Platform Orientation Utilizing Computational Fluid Dynamics

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In the Oil and Gas industry, the orientation of an offshore platform is, in most cases, determined by engineering judgment. While this approach typically appears to be time and cost effective, it has the potential to lead to a non-ideal design solution, which could cause issues and increased costs in later design stages. The presentation will discuss how the orientation and layout of an offshore platform can have a significant impact in developing a better and more informed design. A case study will be discussed where STAR-CCM+® was integrated with additional analysis to optimize the orientation of a fixed offshore platform. The parameters considered include the natural ventilation (wind); which can reduce the potential accumulation of toxic and flammable gases, the power generation turbine exhausts; which can impact helicopter operations due to helideck impairment from hot exhaust gases, the lifeboat drift off direction; which can impact the safety of the crew in an emergency situation, the hydrodynamic drag; which can affect tendon fatigue life, and the wind chill; which can affect the ability for personnel to work on the platform. The presentation will demonstrate a technique to find the platform orientation which results in the best design compromise between the above mentioned parameters.

Author Company: 
Atkins Global
Author Name: 
Gerard Reynolds