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dc.contributor.authorNjå, Nils Oskar Berg
dc.date.accessioned2012-11-13T14:29:04Z
dc.date.available2012-11-13T14:29:04Z
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/11250/183414
dc.descriptionMaster's thesis in Petroleum engineeringno_NO
dc.description.abstractThe original platforms on the Valhall field will have to be decommissioned due to integrity issues. The oldest drilling platform, Valhall DP, has 30 wells that must be P&A in order to remove the platform. This thesis examines the challenges for P&A of the Valhall DP wells. To understand why the Valhall DP wells have to be P&A-ed, a detailed field description has been given, especially with regard to compaction and subsidence. Both internal BP regulations and NCS regulations have been evaluated and compared. Alaskan regulations have been compared as well to show the differences between different regulatory regimes. In order to P&A the Valhall DP wells according to NCS and BP regulations, new technology will have to be invented. A review of new technology, non commercialized technology and new plugging materials has therefore been included. A proposal for a general P&A plan has also been included.no_NO
dc.language.isoengno_NO
dc.publisherUniversity of Stavanger, Norwayno_NO
dc.relation.ispartofseriesMasteroppgave/UIS-TN-IPT/2012;
dc.subjectpetroleumsteknologino_NO
dc.subjectboreteknologino_NO
dc.subjectValhallno_NO
dc.subjectwell designno_NO
dc.titleP&A of Valhall DP wellsno_NO
dc.typeMaster thesisno_NO
dc.subject.nsiVDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512no_NO
dc.source.pagenumber105no_NO


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