Blar i Studentoppgaver (TN-IKM / TN-IMBM) på emneord "undervannsteknologi"
Viser treff 1-20 av 193
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A comparative analysis of 21 inch and 16 inch drilling riser for deepwater application
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)When offshore drilling needs to be conducted in deepwater and ultra-deepwater area, a significant increase of weight to be accommodated by the drilling rig due to more riser joints and larger drilling mud volume becomes a ... -
A comparison study of pressure vessel design using different standards.
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)Due to a recent pressure vessel design error (see chapter 1.2.7) the design methods used for pressure vessel design is investigated. Several codes are currently available for design and analysis of pressure vessels. Two ... -
A parametric study of variable deck load for drilling vessels
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)The size of semi-submersible drilling rigs has tripled over the past 50 years, with corresponding increase in cost. In order to change the direction of this development, the size of the rigs has to be challenged. Utilizing ... -
A study of fracture mechanisms when exposed to hydrostatic loads
(Master thesis, 2014-06-13)Bridgman experiment is an experiment that was conducted by Bridgman in 1912. This simple experiment consists of a rod going all the way through a pressure vessel. When pressurizing the vessel, the rod is loaded on the ... -
A study of principal hull parameters for a Spar buoy foundation for a vertical axis wind turbine in the MW-class
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06)This thesis analyses a vertical axis wind turbine (VAWT) in the MW-class used in relation with a floating Spar buoy. The objective was to study the effect of varying principal hull parameters including diameter and draft ... -
A study of the changes in freeboard, stability and motion response of ships and semi-submersible platforms due to vessel icing
(Master thesis, 2014-06-06)There is an increasing demand for energy in the world, and as the traditional fossil fuel supplies are diminishing, it is pushing the oil and gas industry to seek for natural resources in remote and harsh environments. One ... -
A study on engineering critical assessment (ECA) of subsea pipeline girth welds for reeling installation
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)Reeling is offshore pipeline installation method which delivers fast and cost effective pipeline laying. Each of the pipeline segment are welded onshore, the long section of pipeline then spooled onto a large diameter of ... -
A subsea development, flowlines and flow assurance
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)Oil and gas exploration on the Norwegian Continental Shelf has been going on since the 1960. Many smaller oil fields have been found and at that stage they have not been developed, because alone they have not been economically ... -
Acoustic Emission Testing for offshore jacket structures
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-14)Structural health monitoring (SHM) is a critical tool to assess the structural integrity of many applications. Early detection for damage can extend the lifetime for structures through replacing damaged parts and can lower ... -
Alpha factors for the calculation of forecasted operational limits for marine operations in the Barents Sea
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)The execution of marine operations often depends on the wave heights being low enough for safe operations. This needs to be the case for the time the operation takes. Weather forecasts are used to predict the wave heights. ... -
Alternativ beregningsmetode for trunnion-tilkobling
(Masteroppgave/UIS-TN-IKM/2010;, Master thesis, 2010)I løpet av denne oppgaven er det blitt utledet en beregningsmetode som kan benyttes til å kalkulere forsterkningsplatens kapasitet ved bruk av den alternativ forsterkningsmetoden av trunnion-tilkoblinger, referert til som ... -
An evaluation of new technologies with the potential to reduce air emissions from floating Mobile Offshore Drilling Units
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)In this thesis three new technologies with the potential to significantly reduce the release of air emissions have been evaluated. The rigs considered are semi-submersibles and drillships as they have the capacity to reach ... -
Analyses of Jacket Platforms under Ship Collisions
(Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018)Ship collisions with jacket platforms constitute a risk to the facility integrity, the personnel and the environment. Visiting vessels are used in the Norwegian Continental Shelf to handle different goods and materials for ... -
Analysis and Optimization of rigid pipeline with inline structures
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-06-17)Advanced modern technologies and growing demand for oil and gas has led to the discovery and development of smaller and remote fields that were once considered uneconomical. They are made economically more viable by employing ... -
Analysis of forces in a subsea wellhead system supported by NeoDrill conductor anchor node
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)During drilling operations the marine drilling riser is exposed to environmental loads like waves and currents, as well as loads from the rig. These environmental loads are transferred from the riser to the wellhead system. ... -
Analysis of global forces in the wellhead/wellhead connector as a function of wellhead lateral support and stiffness
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)During the life of a well (typically 20 years), a number of operations need to be performed that requires the wellhead/wellhead connector to connect directly to a rig through a riser system. While connected to the vessel ... -
Analysis of new titanium modular stress joint (MSJ) for subsea completion and workover operations
(Masteroppgave/UIS-TN-IKM/2011;, Master thesis, 2012-06)A stress joint is a transitional joint that when used can be located both at the top and bottom of an offshore riser string. The main idea of the stress joint is to have a tapered section between the movement in the riser ... -
Analysis of operability in installing heavy subsea modules
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-09)Today (2015) subsea technology is a big part of the oil and gas industry. New subsea solutions are developed rapidly and large components that previously were placed on a platform are now being moved subsea towards the ... -
Analysis of ROV thrusters and small marine propellers at specific rotational speeds
(Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018)Thrusters are vital for the functionalities of remotely operated vehicles (ROVs). The development of thruster design is a trade-off between cost, thrust force, physical weight and size. Furthermore, it is known that problems ... -
Analysis of the Life of Field concept and its fitness to the future subsea asset maintenance on Norwegian Continental Shelf
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-15)The main scope of this master thesis is to analyse subsea asset maintenance on Norwegian Continental Shelf (NCS) and to evaluate the fitness of the Life of Field (LoF) concept to the future subsea asset maintenance on NCS. ...