RESEARCH PAPERS: Arctic Engineering

Offshore Permafrost Well Design Lateral Soil Movement-Induced Bending Strains

[+] Author and Article Information
S. W. Laut, M. T. Bradshaw

Dome Petroleum Limited, Frontier Production Development, Calgary, Alberta, Canada

J. Energy Resour. Technol 107(2), 195-198 (Jun 01, 1985) (4 pages) doi:10.1115/1.3231176 History: Received June 25, 1984; Revised October 23, 1984; Online October 22, 2009


Offshore production wells placed through permafrost are subjected to lateral soil forces when production of hot oil thaws the surrounding permafrost. Previous work completed indicates lateral soil movements in the Canadian Beaufort Sea to be large enough to cause severe bending strains in the well casing if the well casing moves with the soil. A lateral pile program was utilized to determine the bending strains induced in the well casing subjected to a free-field displacement of the thawed permafrost soil. Parametric studies were undertaken to determine the effect of varying soil properties and well casing rigidity for a given free-field displacement. The results show well casing strains to be lower than first predicted as the well casing does not move exactly with the soil.

Copyright © 1985 by ASME
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