Ice resistant structure optimisation of the steel conductor supported wellhead platform in the caspian sea

M. Tleshev, Christos Spitas, J. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ice infested shallow waters of the North Caspian Sea imposes challenging tasks like ice pile up, fatigue due to ice-induced vibrations and ice impact loads, which strongly affect the structural integrity of offshore installations. This paper explores the potential application of a Minimal Facilities Platform or is also known as a Conductor Supported Wellhead Platform (CSWP) in the North Caspian Sea region and specifically focuses on the design optimization of the substructure due to ice loads. The CSWP has not been used in the cold climate regions before. The intention of this research is to prove feasibility of CSWP to withstand loads in the ice infested shallow waters. The substructure design was optimized by application of an ice resistant conical structure with specific inclination angle at the ice-structure interface. Usually conical structures reduce ice loads and ice induced vibrations. However, a fatigue capacity may be reduced due to geometrical discontinuity with the increase of inclination angle. This was shown in the design analysis.

Original languageEnglish
Title of host publicationArctic Technology Conference 2016
PublisherOffshore Technology Conference
ISBN (Print)9781510835801
Publication statusPublished - Jan 1 2016
EventArctic Technology Conference 2016 - St. John's, Canada
Duration: Oct 24 2016Oct 26 2016

Other

OtherArctic Technology Conference 2016
CountryCanada
CitySt. John's
Period10/24/1610/26/16

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology

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