Now showing items 438-457 of 677

    • New approach to the transportation and installation of heavy-weighted equipment offshore 

      Chernov, Dmitrii (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)
      Installation of offshore equipment is a huge branch of business in the oil and gas industry. Almost every offshore project requires heavy-weighted equipment, which should be installed on the seabed. Recently, oil and gas ...
    • New jack-up concept for Arctic conditions 

      Urycheva, Maria (Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)
      Arctic exploration is one of the main trends in today’s oil and gas industry. In shallow waters jack-up mobile drilling units are often used for drilling outside the ice season. The operating period of the jack-ups is ...
    • Next Generation IMR RROV/AUV/eROV operations 

      Bråten, Erik (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2018-02)
      The oil and gas industry is rapidly changing. The oil price is fluctuating and there has currently been an excess of personnel. Today's Remote Operated Vehicle (ROV) operations are demanding and costly, requiring a support ...
    • Nitrogas HeliNite system 

      Pettersen, Benjamin (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-13)
      In today’s leak detection market the substance HeliNite is widely used. It contains helium and nitrogen gas, and offers highly sensitive leak detection. The company Nitrogas AS has patented and constructed a nitrogen ...
    • Noise filtering from a nonlinear system by using AANN 

      Mathisen, Mats Leander (Masteroppgave/UIS-TN-IKM/2010;, Master thesis, 2010)
      In order to run a gas turbine, the operator (be it human or automatic) needs to monitor the conditions of the various parts inside it. Pressures, temperatures, mass flows, vibrations, power output. These properties all ...
    • Non-Intrusive Inspection (NII) of pressure vessels 

      Eriksson, Andreas (Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-09-14)
      The aim of this thesis is to identify and recommend vessels that are suitable for inspection according the NII methodology, DNV-RP-G103. The theoretical guideline used during the analysis, DNV-RP-G103, was chosen since it ...
    • Non-linear finite element analysis of tubular X joint with selected geometry 

      Ghanem Nia, Nima (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)
      “Tubular Joints” play a very important and quite vital role in most of the marine structures; we can see maybe hundreds of them in every even simple jacket or steel platforms. It is obvious that having full control about ...
    • Nonlinear analysis of a space frame subjected to loading from dropped objects 

      Singelstad, Anne Kathrine Vaagsnes (Masteroppgave/UIS-TN-IKM/2009, Master thesis, 2009)
      There is always a risk of an object being dropped during offshore lifting operations. Any underlying structure or equipment might be severely damaged, and in worst case, lives might be lost. Consequently, structures which ...
    • Norwegian value creation related to development of offshore oil and gas fields 

      Elisabeth, Christiovina (Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)
      The development of petroleum field generates substantial values for Norway. In every development project there is always “local” and “global” contentment and Norwegian value creation depends on the combination of the two. ...
    • NOx-utslipp fra skip 

      Lajord, Endre (Masteroppgave/UIS-TN-IKM/2007, Master thesis, 2008)
    • Numerical analysis of interference between an otter trawl board and a pipe-in-pipe system 

      Muruganandam, Thamilinian Kannamanaickanur (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-29)
      Subsea pipelines are likely to be exposed to fishing activity, which may results in trawl gear interacting with a pipeline. The interaction is classified into impact, pull-over and a special case called hooking. The trawl ...
    • Numerical analysis of vortex shedding 

      Edvardsen, Knut Inge (Masteroppgave/UIS-TN-IKM/2010;, Master thesis, 2010)
      This report deals with structural vibrations of wind exposed structures caused by the vortex shedding phenomena. The theory of vortex shedding and the field of study called aeroelastisity are presented. A case study of ...
    • Numerical and analytical study of steady state and transient heat transfer in liquid filled dead legs 

      Sundt, Eli-Marie Wold (Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)
      A dead leg is an inactive part of a process pipe, and it has been the cause of serious incidents due to liquid reaching its threshold value (TV) for freezing. The existing industrial approach for the design of dead legs ...
    • Numerical Investigation on the Vortex-Induced Vibration Effects of a Deep Sea Mining Riser 

      Joseph, Rohan Shabu (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-14)
      In recent times, the deep sea mining industry has attracted growing attention globally as it targets mining activities in deeper waters of up to 6,000 m depth. Many of the technologies used in deep sea mining have been ...
    • Numerical modeling of recycled fibre reinforced concrete beams and comparison with experimental findings 

      Bernhoft, Katerina (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06)
      The presented work has the main focus on fibre reinforced concrete (FRC). FRC is examined in ATENA, and the numerical results are compared to the experimental. The first part of this report treats the concept of nonlinear ...
    • Numerical Simulation of Flow Around Subsea Covers at high Reynolds Numbers 

      Andersen, Martin (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)
      The present study investigates turbulent flow over square and trapezoidal wall-mounted subsea covers in single and tandem configuration. The structures under investigation in the single configuration are subjected to a ...
    • 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: ...
    • Numerical Simulation of VIV of Risers with Staggered Buoyancy Elements 

      Lekkala, Malakonda Reddy (Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)
      Steel Lazy Wave Riser (SLWR) is an attractive deep water riser system design, which allows the platform motion to be decoupled from the touchdown point (TDP) of the riser. When subjected to external flow, both buoyancy ...
    • Numerical Simulations of Near-Wall Vortex-Induced Vibrations of two Circular Cylinders in Tandem 

      Eie, Kjartan (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)
      Free-spanning subsea pipelines may experience vortex-induced vibrations (VIV) when exposed to fluid flow. These resonant motions can cause fatigue-related problems and in some cases failure of the pipe. A common configuration ...
    • Numerical Study on Offshore Lifting Operations of a Subsea Spool 

      Parra, Carlos Andres (Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018-06)
      Within the scope of marine operations, offshore lifting operations present significant challenges due to the instability and harshness of environmental conditions. Therefore, lifting operations become expensive and risky. ...