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dc.contributor.advisorGudmundsson, Jon Steinarnb_NO
dc.contributor.authorSiljuberg, Morten Kristoffernb_NO
dc.date.accessioned2014-12-19T12:16:35Z
dc.date.available2014-12-19T12:16:35Z
dc.date.created2012-11-10nb_NO
dc.date.issued2012nb_NO
dc.identifier566959nb_NO
dc.identifierntnudaim:7835nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/239864
dc.description.abstractAs warm oil or condensate from the reservoir flow through a pipeline on the cold sea bottom, wax often precipitate and deposit on the wall. To predict the rate of the deposition, wax modeling is important. The main mechanism contributing to deposition, molecular diffusion, is driven by a radial concentration gradient. The concentration gradient is driven by the radial temperature gradient. When precipitation of wax crystallites occurs in the bulk of the flow, it affects the concentration gradient, which again affects the rate of deposition. The current thesis gives an elucidation of this particularity. Fundamental heat and mass transport equations are solved numerically in Matlab and the result shows that the concentration profiles become slighter as the precipitation become larger. This decreases the mass flux due to molecular diffusion. A term “shear dispersion” was introduced in 1980’s to describe particle deposition of wax. The term has been used in several wax deposition models, but the mechanisms behind are not well explained in the literature. An elucidation of both a shear induced lift force and shear induced diffusion are investigated.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for petroleumsteknologi og anvendt geofysikknb_NO
dc.subjectntnudaim:7835no_NO
dc.subjectMTGEOP Geofag og petroleumsteknologino_NO
dc.subjectPetroleumsproduksjonno_NO
dc.titleModelling of Paraffin Wax in Oil Pipelinesnb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber79nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for petroleumsteknologi og anvendt geofysikknb_NO


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