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Analysis of lost circulation on the Norwegian Continental Shelf
(Master thesis, 2021)Lost circulation (downhole losses of drilling fluid) is defined by the absence or reduction of drilling fluid pumped through the drill string while drilling the wells, which filtrates the formation instead of flowing up ... -
Analysis of Machine Learning Based Imputation of Missing Data
(Peer reviewed; Journal article, 2023)Data analysis and classification can be affected by the availability of missing data in datasets. To deal with missing data, either deletion- or imputation-based methods are used that result in the reduction of data records ... -
Analysis of method for increased field knowledge prior to the field development
(Masteroppgave/UIS-TN-IØRP/2017;, Master thesis, 2017-04)Field development is an expensive phase with a high uncertainty due to the limited reservoir knowledge prior to field production. Consequently, the field facilities must be flexible to changes, such as: new wellbores, new ... -
Analysis of mooring systems for offshore vessels in deep waters
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012-06)This thesis is centered on the study and comparison of different mooring/anchoring systems for offshore vessels in deep waters. FPSO’s (Floating, Production, Storage and Offloading platforms), Light Weight Intervention ... -
Analysis of mooring wire rope termination with respect to bending fatigue
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)Mooring lines that are used on floating offshore units are subjected to bending at the end termination. Over-bending in some cases may cause the mooring line to suffer damage from fatigue. A countermeasure for this ... -
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 nonlinear effects in fluid flows through porous media
(Peer reviewed; Journal article, 2022-01)This article examines the nonlinear effects of fluid flow in a porous medium, governed by a new semi-analytical equation, from three aspects: equation derivation, experimental verification, and macroscale simulation ... -
Analysis of Norwegian political parties' use of risk terms and recommendations for how risk science can improve government policy on risk
(Master thesis, 2022)The oil and gas industry has undoubtedly sparked one of the decade's most polarizing political debates: the debate over whether the economy or the environment should take precedence. The liberal left wants rigorous risk ... -
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 operation and maintenance strategies for floating offshore wind farms
(Masteroppgave/UIS-TN-IØRP/2015;, Master thesis, 2015-12-21)This report describes the computations that have been made to simulate the O&M cost for a generic floating offshore wind farm. The aim of this paper is to investigate if the floating foundation technology offers new approaches ... -
Analysis of packer forces in vertical wells and frictionless sail sections
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)New discoveries could represent challenges in many ways such as high pressures and high temperatures. The reservoir contains corrosive liquids that are being produced to the surface. Since the casing is expensive to replace, ... -
Analysis of pore pressure measurements in exploration wells in the Norwegian North Sea
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-12)The aim of this thesis was to examine the pore pressure measurements in the Norwegian North Sea. To study the possibility of the overpressure being an indicator that can increase the probability of hydrocarbon discoveries ... -
Analysis of post-tensioned concrete bridge constructed using incremental launching method
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06)The aim of this thesis is to gain a broader understanding of bridge construction methods and to analyse a bridge constructed in stages. To do so, a model is created for analyses in the frame software NovaFrame. The ... -
An analysis of pre-service teachers understanding of the knowledge needed for teaching mathematics: The case of Malawi
(Peer reviewed; Journal article, 2021-08)In contexts of adversity, there is a need to educate pre-service teachers with specialized content knowledge so they can carry out the work of teaching effectively. This article draws upon a study with three pre-service ... -
Analysis of predicting terminal velocities and impact energies of dropped objects falling through sea column
(Master thesis, 2023)Many offshore operations include risks that might lead to catastrophic consequences. One of the most common offshore risks is the unintentional drop of objects during various marine operations. This work is divided into ... -
Analysis of Residential Household Energy Consumption Using Smart Meter Data
(Masteroppgave/UIS-TN-IDE/2019;, Master thesis, 2019-06-15)The need to change the source of electricity generation is apparent in the effect of climate change on the environment. Asides from the source change to renewable energy, the necessity for residents to understand their ... -
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 samples of high explosives extracted from explosive remnants of war
(Peer reviewed; Journal article, 2022)Millions of tonnes of dumped ammunition and explosive remnants of war remain in nature both on land and at sea. It is well known that the ordnance could represent a definite explosive risk if disturbed, and that some of ... -
Analysis of slim hole drilling operations
(Masteroppgave/UIS-TN-IPT/2015;, Master thesis, 2015-06-15)Unlike the conventional well technology, slim hole uses a relatively narrower well size. The concept has been introduced long, but the application in petroleum well not very common. Based on its advantage in terms of cost, ... -
Analysis of spar and semi-submersible floating wind concepts with respect to human exposure to motion during maintenance operations
(Peer reviewed; Journal article, 2022)Floating offshore wind turbines (FOWTs) are expected to experience onsite maintenances and inspections during their lifetimes. To carry out offshore maintenance activities, a crew will be transferred to an FOWT and spend ...