Thawing and Differential Settlement Close to Oil Wells through Permafrost
The paper puts forward a preliminary analysis, whose purpose is to identify the factors which determine settlements and casing stresses, and to find out what information is needed for a more precise evaluation. Bold idealizations will be made in order to isolate primary from secondary factors: thus,...
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Format: | Text |
Language: | English |
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1972
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Online Access: | http://www.dtic.mil/docs/citations/AD0749097 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0749097 |
Summary: | The paper puts forward a preliminary analysis, whose purpose is to identify the factors which determine settlements and casing stresses, and to find out what information is needed for a more precise evaluation. Bold idealizations will be made in order to isolate primary from secondary factors: thus, for example, no account is taken of the variation with depth of the initial temperature of the undisturbed permafrost layer. The heat transfer problem is briefly considered first; simple models of thaw consolidation and arching follow, and their implications for thawing around a well are then examined. |
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