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The Design and Analysis of a Submerged, Buoyant, Anchored Pipeline for Transporting Natural Gas Through the Deep Ocean

Godfrey Hamilton SavageStanford University. Department of Petroleum Engineering

出版	Department of Petroleum Engineering, School of Earth Sciences, Stanford University, 1970
URL	http://books.google.com.hk/books?id=byZAAAAAIAAJ&hl=&source=gbs_api

註釋The concept of buoyant, anchored structures is proposed as having unique advantages over present conventional bottom-mounted, load bearing structures in the ocean environment. The particular case of a submerged, buoyant pipeline, anchored below the surface energy effects for the purpose of transporting natural gas from North Africa to Southern Europe is technically and economically evaluated. A design, mathematical model of the pipeline with its anchoring system is presented. A typical segment of the model is analyzed to determine the maximum stresses developed in the pipeline and in the anchoring cables and the maximum motions of both the pipeline and the anchoring cables when subjected to forces due to ocean currents, surface wave action and buoyancy. A mathematical model of the ocean current velocity versus depth that exists for the Mediterranean location is presented. The several probable diameter pipelines are then incorporated into specific pipeline and anchor systems and analyzed to determine the required cable spacing, cable sizes, anchor sizes and the other important cost determining factors, including installation costs. Finally, the preliminary capital investment and cost analysis of the pipeline system required is made with assumptions explained to forecast a simple return on investment. (Author).