Blar i UiS Brage på forfatter "Gudmestad, Ove Tobias"
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Impact of and solutions to effects of climate changes for Longyearbyen, Svalbard, Norway
Winther, Susanna N; Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2023)Climate changes forces us to make significant mitigation and adaptation measures. As temperature rises and the environmental conditions changes, a variety of challenges occur. Across the whole globe, harming consequences ... -
The implementation and application of the International Code for Ships Operating in Polar Waters (Polar Code): Evaluations and considerations addressing this functionbased regulation’s effect on safety and emergency preparedness concerning Arctic shipping
Engtrø, Espen (PhD thesis UiS;, Doctoral thesis, 2022-02)People have sailed in polar waters for decades; more than one hundred years ago, Nansen and Amundsen explored the oceans of the Arctic and Antarctic with their expedition teams, with Amundsen leading the expedition that ... -
Implementation of the Polar Code: Functional Requirements Regulating Ship Operations in Polar Waters
Engtrø, Espen; Gudmestad, Ove Tobias; Njå, Ove (Peer reviewed; Journal article, 2020-08)In 2017, the The International Code for Ships Operating in Polar Waters (Polar Code) – a set of function-based regulations applicable to Arctic and Antarctic waters, with the goal of increasing awareness and improving ... -
Improving the operating methods of the Piltun-Astokhskoye oil and gas condensate field, taking into account the manufacturability of the equipment and environmental safety requirements
Nekrasov, Nikita (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2020)This thesis is devoted to the oil and gas condensate field in the north of Sakhalin Island - Piltun-Astokhskoye. The development and operation in the Arctic is a very time-consuming and financially expensive process. In ... -
The influence of the composition of water on the results of accelerated aging resistance testing of low voltage subsea cables insulation
Erfurth, Roland; Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2019)The composition of water changes with temperature, for instance, the saturation rate of water in polyurethane membranes is related to the temperature. Thus, it is necessary to evaluate the influence of the composition of ... -
Justification of selection and installation method of an offshore oil and gas field structure for the shelf of the Okhotsk sea
Samoilava, Maryia (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-08)This thesis is dedicated to the Ayashsky license block that is located near the northeastern part of the Sakhalin Island. A concept of the development of this offshore block of fields will be discussed in this work. Special ... -
Limit cycle oscillations at resonances
Hellevik, Karina; Gudmestad, Ove Tobias (Journal article; Peer reviewed, 2017)This paper deals with limit cycles in one degree of freedom systems. The van der Pol equation is an example of an equation describing systems with clear limit cycles in the phase space (displacement-velocity 2 dimensional ... -
Limitations related to marine operations in the Barents Sea
Gudmestad, Ove Tobias (Journal article; Peer reviewed, 2017)Some marine activities in the Barents Sea are normally ongoing year-round; others are dependent on limited weather windows. The limitations for the marine operations are the special weather conditions characterized by ... -
Management of challenges during the construction of offshore facilities
Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2019)The construction of offshore facilities for development of oil and gas deposits is preceded by careful Conceptual Studies, Front-End Engineering Design Studies (FEED studies) and a Detailed Engineering phase including ... -
Marine Operations in Arctic conditions
Gudmestad, Ove Tobias; Døskeland, Øystein Husevåg (Peer reviewed; Journal article, 2023)Marine operations require careful early planning and thereafter detailed planning prior to project execution. The time from initiating an operation to finalization of the activity is typically several days. The activity ... -
Methods for analysing wave slamming loads on truss structures used in offshore wind applications based on experimental data
Jose, Jithin; Podrazka, Olga; Obhrai, Charlotte; Gudmestad, Ove Tobias; Cieslikiewicz, Witold (Peer reviewed; Journal article, 2016)Offshore wind turbines installed in shallow water regions are subjected to highly varying hydrodynamic loads, also from plunging breaking waves. Many investigations have been made regarding the wave slamming forces acting ... -
Methods for in-line diagnostics of in-field pipelines during subsea production with application(s)
Viazikov, Nikita (Master thesis, 2023)This thesis serves as a comprehensive study incorporating smart pigging technology and software modeling applications for flow assurance purposes, with a special emphasis on subsea pipelines. In the modeling chapters, ... -
Modeling of Heavy-Oil Flow with Regard to Their Rheological Properties
Beloglazov, Ilia; Morenov, Valentin; Leusheva, Ekaterina; Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2021)With the depletion of traditional energy resources, the share of heavy-oil production has been increasing recently. According to some estimates, their reserves account for 80% of the world’s oil resources. Costs for ... -
Modelling of Waves for the Design of Offshore Structures
Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2020)For the design of structures we need to select design safety levels to ensure structures shall safely operate and not collapse. These levels are given in relevant safety standards. For these levels we need to identify the ... -
Mooring Analysis of a Closed Fish Cage
Andresen, Jørgen (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-13)As of today, Norway is the second largest seafood exporter in the world after China, and Norwegian seafood is currently exported to more than 130 countries (Laksefakta, n.d.). In conjunction with the present growth of the ... -
Mooring systems analysis of floating wind turbines in Italian seas
Re, P.; Passoni, G.; Gudmestad, Ove Tobias (Peer reviewed; Journal article, 2019)In recent years, interest in exploiting wind power in deep waters has grown, with the realization of floating structures that could accommodate a turbine and produce electricity. One of the many challenges that these ... -
Numerical simulation of ice sheet – FPSO interaction
Kutushev, Vadim A. (Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-06)The present thesis is devoted to investigation of FPSO interaction with level ice. The interaction with level ice is only addressed, disregarding other ice features. The scope of the thesis focuses upon two major problems: ... -
Offshore Structures Exposed to Large Slamming Wave Loads
Jose, Jithin (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 ... -
Operational limits for a stimulation vessel in the Northern Caspian Sea conditions
Shulkin, Roman (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)This Master’s thesis describes the concept development of a stimulation and well service vessel and the evaluation of its operational limits in Northern Caspian Sea conditions during a whole year of operation (all 4 seasons). ... -
Optimization of Lazy Wave Riser Design
Mariyathas, Sebastian Croos (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-25)The objective of this thesis is to optimize the design of a Lazy Wave Riser (LWR) operating at different water depths and in different sea conditions. Design of lazy wave risers involves optimization of the various constituent ...