• A Multiphase Pump Experimental Analysis 

      Serena, Alberto (Doctoral thesis at NTNU;2016:215, Doctoral thesis, 2016)
      This research project focuses on the characterization of the behaviour of a mixed-flow pump under off-design conditions and two-phase operation, in terms of performance degradation and instabilities. The recent multiphase ...
    • Analyse av våtgass strømning i kompressorløpehjul 

      Larsen, Øyvind (Master thesis, 2011)
      De fleste store felt i Nordsjøen er utbygd med tradisjonell teknologi. Fokus har i de senere år skiftet mot mindre og mer fjerntliggende felt med begrenset infrastruktur. Utvikling og drift av slike felt krever ny ...
    • Evaluation of Performance Models for Wet Gas Compressors 

      Hundseid, Øyvind (Doktoravhandlinger ved NTNU, 1503-8181; 2008:305, Doctoral thesis, 2008)
      The Norwegian petroleum industry has played an important role in the country’s industrial development since the early 1970s. At present, however, the largest oil and gas fields on the Norwegian continental shelf have been ...
    • Experimental analysis of Venturi-tube behavior in wet gas conditions 

      Mehlum, Olav (Master thesis, 2019)
      Subsea våtgasskompressorer har vært i drift i omtrent 5 år og har bidratt til å økt utvinningsgraden med ca. 10 %. For videreutvikling og drift av subsea våtgass kompresjon, kreves det detaljert kunnskap hvordan endringer ...
    • Internal Leakage Impact on Compressor Performance 

      Tønnessen, Sindre G (Master thesis, 2015)
      Abstract With the discovery of Ekofisk in 1969 the Norwegian oil adventure started and up until today the work both offshore and onshore has given Norwegian industry a unique position in the world. Peak oil was reached in ...
    • Multibooster Instabilities 

      Nielsen, Harald Relling (Master thesis, 2015)
      Increasing oil and gas recovery of reservoirs by boosting unprocessed hydrocarbons require multiphase machinery capable of pumping mixtures with gas volume fractions (GVF) from 0-100%. Unwanted flow regimes can cause pump ...
    • MultiBooster instability and surge - Ustabilitet og surge i MultiBooster 

      H. Kringlebotten, Richard (Master thesis, 2016)
      Industry has lately turned the focus on subsea processing as a tool to enable new developments where the technology needs are increasing. Multiphase pumping ( boosting ) plays a key role in the increase of production and ...
    • Optimalisering av løpehjul for våtgass 

      Irgens, Stephen Johansen (Master thesis, 2012)
      I denne oppgaven undersøkes det muligheten for å optimalisere våtgasskompressoren til NTNU. Oppgaven studerer muligheten for å optimalisere impelleren ved å endre kappeprofil og utløpshøyde B2. I tillegg er partikler ...
    • Optimalisering av våtgass diffusor og spiralhus 

      Viseth, Thorstein Otto (Master thesis, 2012)
      Våtgasskompressorer er en ny teknologi, og kan være svaret på hvordan uprosessert gass kan transporteres til prosessanleggene. Lykkes industrien med dette kan det føre til store kostnadsbesparelser som vil gjøre marginale ...
    • Transient analysis of wet gas compression systems 

      Bakken, Martin (Doctoral theses at NTNU;2019:159, Doctoral thesis, 2019)
      The demand for oil and gas remains high, and changing market conditions require innovative solutions. Development of compression technology tailored for subsea oil and gas production can contribute significantly to ...
    • Validation of Wet Gas Surge Phenomena 

      Sørvik, Lars Andreas Øvrum (Master thesis, 2012)
      AbstractIn order to utilize the fossil resources on the Norwegian continental shelf, technology and expertise have proven to be of great importance and hence, essential for further exploration and development of new ...
    • Våtgass kompresjon: En eksperimentell og teoretisk undersøkelse av lydhastighet og støt i tofasestrømning 

      Godø, Sjur Erlend (Master thesis, 2008)
      Olje- og gassindustrien trenger forbedret kompressorteknologi for å øke produksjonen av gass. Naturgassen på gassfelt inneholder væske og dagens kompressorteknologi er ikke utviklet for å tåle slike væskemengder. Tilstedeværelse ...
    • Wet Gas Compressor Performance: A Numerical Investigation of Thermal-Equilibrium in a Centrifugal Compressor Exposed to Wet Gas 

      Mele, Erik (Master thesis, 2012)
      Wet gas compression and subsea compression technology has gained increased focus in the recent years. With aging fields on the Norwegian continental shelf and new discoveries in arctic regions, subsea compression could ...
    • Wet Gas Compressors - Stability and Range 

      Ferrara, Veronica (Doctoral thesis at NTNU;2016:230, Doctoral thesis, 2016)
      The oil and gas industry is a large user of turbomachinery. The demand for oil and gas is consistently growing, and changing market conditions require innovative solutions. Operation and optimization of turbomachinery ...