A mathematical investigation on the ice loading on a bottom founded conical structure operating as a drilling platform in 30 to 60 feet of water in the South Beaufort Sea is described. Following the selection of the properties of ice sheets and ridges likely to be encountered in the area of interest, mathematical simulators for the prediction of the forces exerted by these formations on the cone were developed. The simulators incorporate the effects of ice adhesion, friction, and failure and post-failure behaviour of the ice sheet or ridge. Analytical methods based on statics and beam and plate theory were used to determine the sensitivity of the loads to different system parameters including water depth and cone angle. Subsequently, more refined calculations were made using a finite element computer program to model the failure and post-failure behaviour of sheets and ridges acting together. When operating in 30 feet of water loads due to the adhesion of the ice sheet govern. In 60 feet the loadings imposed by healed ridges govern.

  • Supplemental Notes:
    • APOA Project No. 57: Adfreeze Study (Report, no. 2).
  • Corporate Authors:

    Arctic Petroleum Operators Association

    Dome Petroleum Limited, P.O. Box 200
    Calgary, Alberta T2P 2H8,   Canada 

    Arctic Consulting Services Limited

    ,   Canada 
  • Publication Date: 1973

Media Info

  • Features: References;
  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00303112
  • Record Type: Publication
  • Source Agency: Arctic Science and Technology Information System
  • Files: TRIS
  • Created Date: Jan 15 1980 12:00AM