EVOLUTION OF ICE RESEARCH FOR OFFSHORE PACK ICE OPERATIONS

A great deal has been learned about how to operate in the moving pack ice since 1975, and a number of concepts have been developed which permit (Dome) to extend our drilling season, using drillships in the ice. These concepts include: a shorefast ice drilling system, application of coal dust and icecutting to permit the ships to break out of a winter harbour through five to six feet of ice, icebreaking operations which permit the drillships to drill in newly-forming ice in the moving pack ice up to 24 inches thick. New concepts are being developed to permit exploratory drilling operations and production operations year-round in the pack ice. These include: a turret-moored drilling system capable of operating in up to 90 feet first-year pressure ridges, bottom-founded monocones and caisson structures. We have also designed an icebreaker with novel icebreaking features as a prototype to larger icebreaking vessels and year-round Arctic Class 10 tankers. The Beaufort Sea places an additional requirement for research in the areas of: establishing ice and sea bottom design criteria; structural design for Arctic conditions; and a number of support facilities such as navigation, ice prediction systems, and oilspill countermeasure systems. (Author)

Media Info

  • Pagination: p. 441-495

Subject/Index Terms

Filing Info

  • Accession Number: 00331688
  • Record Type: Publication
  • Source Agency: Arctic Science and Technology Information System
  • Report/Paper Numbers: Volume 3 Conf Proc
  • Files: TRIS
  • Created Date: Jun 12 1981 12:00AM