TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Experience of enhancing ice resistance of platforms for exploring North Caspian oil & gas fields



Full text article (in russian)

Year

 
2012

Issue

 
354

Volume

 
5

Pages

 
83-98

Caption

 
Experience of enhancing ice resistance of platforms for exploring North Caspian oil & gas fields

Authors

 
M. Karulina, E. Karulin, I. Blagovidova, I. Bardin

Keywords

 
the North Caspian sea, ice loads, ice resistance properties, ice-resistant platform, ice ice entanglement, shallow waters

Summary

 
The paper present the results of integral studies supporting design of ice-resistant platforms intended to explore promising oil & gas fields in the North Caspian sea These fields are hard to explore due to weather and environmental conditions: shallow waters and permanent icing in winter. Ice interaction of the platform intended to explore Korchagin and Filanovsky shallow water oil & gas fields was simulated in the ice test tank of the KSRI. These studies allowed identifying the main factors of shallow water effect on ice loads: formation of considerable broken-ice entanglements in front of wide structures which increase global ice loads, and ice penetration on platform deck as well.
Model test results are used to develop recommendations on increasing ice resistance of platforms. Practicability of the deflector along the perimeter of ice protector (as applied on LSP-1 platform operating on Korchagin field) was confirmed by actual platform operation in 2009-2011. Analysis of these model tests performed on a set of structures intended to explore Filanovsky field allowed optimizing their shapes (in particular, the shape of accommodation module platform whose support structure consists of two separate blocks). Optimized and streamlined shapes of supporting blocks will hinder the formation of considerable ice entanglements in front of them which will simultaneously result in reduction of global ice loads.
Available experience of tests in support of designing the platforms intended to explore North Caspian fields can further be used in design of other ice resistant structures intended to operate in shallow waters.

Rubrics

 
Ship design and structure

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