Browsing Fakultet for ingeniørvitenskap (IV) by Subject "Undervannsteknologi, Marin undervannsteknologi"
Now showing items 1-8 of 8
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Analysis of Riser Loads during BOP sailing.
(Master thesis, 2015)Transferring a drilling rig and its subsea equipment from one location to another by conventional means tends to be time consuming. With low oil prices and increasing rig rates, operators are looking into making drilling ... -
Analysis of Riser-induced Loading on Wellhead
(Master thesis, 2015)When riser systems are connected to subsea wells, large forces and moments are transmitted to the wellheads. This is due to the large weight of the blowout preventer and the environmental excitation forces that are transmitted ... -
Approaches for assessment of weld fatigue and verification of the effective notch stress approach
(Master thesis, 2014)Fatigue of welded structures is commonly assessed in three ways. These are the nominal stress-, the structural hot spot- and the effective notch stress approach. As the applicability of the approaches differs, these ... -
Comparative Analysis of Umbilical Pull-in through J-tubes by Detailed Models and Simplified Methods
(Master thesis, 2015)Design and installation of offshore structures and subsea pipelines requires knowledge about loads that will affect the equipment during the installation process and estimates of the load effects during the lifetime of the ... -
Distributed CP Sensor - Design and Operation Sequence Optimization
(Master thesis, 2017)Focus on reducing cost and improve efficiency has been key aspects in the oil and gas industry the recent years. New technology and new ideas that can improve efficiency and reduce cost should be more than welcome for ... -
Installation of subsea equipment- design and planning with focus on specification of operational limits
(Master thesis, 2017)In this thesis, an investigation of a 170 [t] dual Cap-X template launch through the splash zone has been conducted. The dual Cap-X solution is based on two suction anchors as the foundation in addition to a framework ... -
motion control during offshore lift operations
(Master thesis, 2017)Offshore lifting is present in many offshore operations. Offshore lifting operations is very sensitive to environmental loads which reduces the weather window for the entire operation. The weather criteria for offshore ... -
Parametric Studies of Dynamic Response for a Workover Riser
(Master thesis, 2014)A workover riser is a top tensioned riser, in essence similar to a marine riser. Workover risers differ from marine risers mainly by smaller dimensions, as well as simpler solutions at the riser ends. For instance, the ...