Browsing UiS Brage by Author "Omdal, Edvard"

Now showing items 1-8 of 8

    • The mechanical behavior of chalk under laboratory conditions simulating reservoir operations 

      Omdal, Edvard (PhD thesis UiS;, Doctoral thesis, 2010-06-08)
      This work has been carried out with the chalk mechanics research society at the University of Stavanger. The PhD thesis is thus a continuation to the long line of experimental chalk research carried out honoring the ...

    • Mineralogy and geochemistry of reservoir and non-reservoir chalk from the Norwegian continental shelf 

      Kallesten, Emanuela Iedidia; Zimmermann, Udo; Madland, Merete Vadla; Bertolino, Silvana R.A.; Omdal, Edvard; Andersen, Pål Østebø (Peer reviewed; Journal article, 2021-05)
      A first and detailed study of the geochemistry and mineralogy characterizing the North Sea reservoir and non-reservoir chalk is provided in this work. The study is based on 185 cores from exploration and development wells ...

    • Permeability evolution in chalk linked to stress and thermochemical aspects of North Sea reservoir conditions 

      Kallesten, Emanuela I. (PhD thesis UiS;564, Doctoral thesis, 2020-12)
      The project was initiated by The National IOR Centre of Norway within the University of Stavanger and it aligns with the overall goal of the centre to improve oil recovery on the Norwegian Continental Shelf. It contributes ...

    • Permeability evolution of shear failing chalk cores under thermochemical influence 

      Kallesten, Emanuela Iedidia; Andersen, Pål Østebø; Madland, Merete Vadla; Korsnes, Reidar Inge; Omdal, Edvard; Zimmermann, Udo (Peer reviewed; Journal article, 2020-04)
      Development of petroleum reservoirs, including primary depletion of the pore pressure and repressurization during water injection naturally, leads to changes in effective stresses of the formations. These changes impose ...

    • Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores 

      Kallesten, Emanuela Iedidia; Cherif, Yosra; Madland, Merete Vadla; Korsnes, Reidar Inge; Omdal, Edvard; Andersen, Pål Østebø; Zimmermann, Udo (Peer reviewed; Journal article, 2020-11)
      Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ...

    • Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores 

      Kallesten, Emanuela Iedidia; Cherif, Yosra; Madland, Merete Vadla; Korsnes, Reidar Inge; Omdal, Edvard; Andersen, Pål Østebø; Zimmermann, Udo (Peer reviewed; Journal article, 2020-03)
      Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ...

    • Water flooding of Eldfisk reservoir cores 

      Cherif, Yosra (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)
      Enhanced Oil Recovery (EOR) and the effect of the aqueous chemistry on the mechanical strength of chalk have been extensively studied over the years. This is simply because the stability of the reservoir system is affected ...

    • Wellbore stability analysis for an extended-reach well on Ekofisk 

      Diaz Lopez, Jairo Alexander (Master thesis, 2022)
      The drilling of extended-reach wells is an increasingly common practice to reduce costs in exploration and development of mature fields. Extended-reach wells are technically challenge, as high inclination trajectories may ...