Browsing PhD theses (TN-IKM / TN-IMBM) by Subject "offshore teknologi"
Now showing items 1-18 of 18
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Activity-based life-cycle cost analysis : design, operation and maintenance in Arctic environment
(PhD thesis UiS;134, Doctoral thesis, 2011-08-25)Currently the oil and gas exploration and production is moving north towards the Barents Sea on the northern coast of Norway, north of the Arctic Circle. This unfamiliar operational environment of the Arctic poses new ... -
Aerodynamic loads on a wind turbine rotor in axial motion
(PhD thesis UiS;245, Doctoral thesis, 2015-03-13)This study investigates the unsteady aerodynamics of attached flow on a two-dimensional airfoil. The unsteady aerodynamics introduces aerodynamic damping of the offshore wind turbine structure and is thus important for ... -
Analysis and Management of Bottlenecks in Supply Networks : Towards a Structured Approach to Stabilization of Inbound Material Flow
(PhD thesis UiS;256, Doctoral thesis, 2015-06-11)Any organization whose business model is based on production relies, and is dependent, on providers of raw material which it transforms into products. Customers’ demand for products, and thus the producing firm’s demand ... -
Asset Integrity Management : Challenges, planning and implementations
(PhD thesis UiS;306, Doctoral thesis, 2016-08-23)The emergence of asset integrity management (ATM) in the petroleum industry has been encouraged by the demand for a safer and more sustainable workplace with respect to health, safety, environment, value generation and ... -
Crack Arresting using Cutout Repair in Tubular Offshore Joints
(PhD thesis UiS;, Doctoral thesis, 2023)Finding efficient repair methods for cracked tubular joints in offshore structures is important, both as a permanent or temporary repair solution. The exploration of such methods and techniques includes the use of hole ... -
Design and Dynamic Analysis of a Novel Subsea Shuttle Tanker
(PhD thesis UiS;, Doctoral thesis, 2023)Underwater pipelines, tanker ships, and liquefied gas carriers have traditionally been employed to transport hydrocarbons between offshore oil and gas facilities and onshore locations. However, both methods come with ... -
Dynamic behaviour of jackets exposed to wave-in-deck forces
(PhD thesis UiS;17, Doctoral thesis, 2005)During the last decade, wave-in-deck loading on fixed offshore structures has increasingly been acknowledged as an issue of concern to the offshore oil and gas industry. Being mainly an issue for existing structures, the ... -
Effect and consequence analysis of expanding PIN-technology in various types of heavy machinery
(PhD thesis UiS;, Doctoral thesis, 2023)Expanding pin systems can be applied in any joint, moveable, or fixed, in any type of machine, crane, or equipment, in almost any type of industry, globally. There are a variety of different versions of expanding pins ... -
Industrial Service Strategy : Development, Implementation and Execution
(PhD thesis UiS;19, Doctoral thesis, 2005)Increasingly, as markets become more competitive and globalized, industrial service providers are dependent on effective and efficient service strategies to achieve a certain level of customer satisfaction and ... -
Life extension of offshore structures : A conceptual framework and fatigue damage models
(PhD thesis UiS;, Doctoral thesis, 2019-09)Many offshore structures worldwide are approaching or have already exceeded their original design life. It is important to use the existing infrastructure efficiently and to estimate remaining service life accurately. ... -
Load sequence effects and mixed-mode fatigue crack growth in offshore structures
(PhD thesis UiS;, Doctoral thesis, 2019-12)An increasing number of the offshore structures in the North Sea are being operated in a life extension phase, which means that their original design life has been exceeded. As the structures age, they are deteriorating, ... -
Mineral Replacements in Flooding Experiments Linked to Enhanced Oil Recovery in Chalk
(PhD thesis UiS;, Doctoral thesis, 2018-11)Seawater injection into chalk-reservoirs on the Norwegian Continental Shelf has increased the oil recovery and reduced seabed subsidence. In the researchfield of Improved Oil Recovery (IOR) the effects of injection of ... -
Numerical Modelling and Global Response Assessment of Floating Docks towards Efficient, Safer and Autonomous Docking Operations
(PhD thesis UiS;, Doctoral thesis, 2024)Floating docks are known for their construction efficiency and operational flexibility compared to traditional graving docks. They play an important role in shipyards by serving as essential platforms for vessel construction, ... -
Offshore Structures Exposed to Large Slamming Wave Loads
(PhD thesis UiS;, Doctoral thesis, 2017-12)In sloping shallow water regions, waves undergo different nonlinear transformations such as wave shoaling and breaking, due to the nonlinear wave interactions with the seabed. The forces from breaking waves are of concern ... -
On wave-wind interactions and implications for offshore wind turbines
(PhD thesis UiS;235, Doctoral thesis, 2014-11-17) -
Production Performance Analysis : Reliability, Maintainability and Operational Conditions
(PhD thesis UiS;144, Doctoral thesis, 2011-11-28)With the increasing demand for energy over recent decades, the Arctic region has become an interesting area for future exploration and development for the oil and gas industry. The Arctic region is known to have a harsh ... -
Safety and Emergency Response Associated with Cold Climate Marine Operations
(PhD thesis UiS;, Doctoral thesis, 2020)This dissertation is developed by GMC Maritime and the University of Stavanger and is part of the industrial PhD program at the Norwegian Research Council. The aim of the work is to identify the governing mechanisms ... -
Thermal Stratification and Turbulent Wind Loading on Floating Wind Turbines
(PhD thesis UiS;, Doctoral thesis, 2023)Offshore wind is a promising clean energy alternative to fossil fuels. The wind resource at sea is considerably stronger than on land, and the offshore wind turbines (OWTs) tend to be larger. Currently, more than 160 ...