Blar i Department of Petroleum Engineering på tittel

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    • Water and surfactant flooding at different wettability conditions 

      Criollo, Silvio Alejandro (Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)
      In a surfactant flooding of oil reservoirs, surfactant products are added to the injected water to reduce the oil-water interfacial tension (IFT) and thereby mobilize capillary trapped oil. The theory in classic surfactant ...

    • Water induced compaction of chalks with varying non-carbonate content : the effect of Mg2+ and pH of the injected brines 

      Veen, Steffen Helgesen van Der (Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)
      The main objective for this study was to investigate the effect of alkaline brines on chalk, and the importance of non-carbonate content in chalk. This was done by flooding alkaline MgCl2 on Liège chalk – which has ...

    • Water weakening of chalk: A mechanistic study 

      Madland, Merete Vadla (PhD thesis UiS;11, Doctoral thesis, 2005)
      Since the detection of the Ekofisk subsidence some 20 years ago, there has been a considerable research activity concerning chalk behaviour in general, and mechanical properties particularly. Due to the importance of water ...

    • Water weakening of chalks - comparsion of intact and fractured cores 

      Abubeker, Elyas (Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-17)
      Even though Chemical induced compaction on high porosity chalks has been studied extensively, little attention was given to the impacts of fractures when chalk is exposed to various flooding brines. Due to the nature of ...

    • Water-based enhanced oil recovery (EOR) by “Smart Water”: optimal ionic composition for EOR in carbonates 

      Fathi, Seyed Jafar; Austad, Tor; Strand, Skule (Journal article; Peer reviewed; Doctoral thesis, 2011)
      The composition of the injecting brine has a profound effect on the efficiency of water-based enhanced oil recovery (EOR) methods. Recently, we observed that not only is the concentration of the active ions Ca2+, Mg2+, ...

    • Water-Based EOR in Limestone by Smart Water : A study of surface chemistry 

      Ravari, Reza Rostami (PhD thesis UiS;147, Doctoral thesis, 2011-12-09)

    • Waterflooding of carbonate reservoirs : EOR by wettability alteration 

      Puntervold, Tina (PhD thesis UiS;50, Doctoral thesis, 2008-05-30)
      Oil production is generally divided into three stages, primary recovery, secondary recovery and tertiary recovery. In primary recovery, which is usually (but not necessarily) the first production stage, the natural energy ...

    • Wave-equation migration velocity analysis of the successive vintages of the Sleipner Field - A detailed prediction of the mechanical effects caused by CO2 injection 

      Grønberg, Annette (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-14)
      Since September 1996, Statoil and partners have through their carbon capture and storage project at the Sleipner field, located in the central North Sea, injected approximately one million tons carbon dioxide per year into ...

    • Weak solutions for a gas liquid model relevant for describing gas-kick in oil wells 

      Evje, Steinar (Journal article; Peer reviewed, 2011)
      The purpose of this paper is to establish a local in time existence result for a compressible gas-liquid model. The model is a drift-flux model which is composed of two continuity equations and one mixture momentum equation ...

    • Well collapse modeling & Norne & Heidrun well instability sensitivity studies 

      Buan, Irene (Masteroppgave/UIS-TN-IPT/2015;, Master thesis, 2015-06-15)
      Well collapse is a typical wellbore instability problem in brittle shale and unconsolidated formations. In this thesis, the thermal, chemical, mechanical, hydraulic, elastic and transient effects on the well collapse ...

    • Well control analysis in conventional and riserless reelwell method 

      Utheim, Marit (Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-10)
      The oil industry is nowadays facing several problems as hydrocarbon reserves are declining and challenging areas are forced to explore. Deepwater drilling is one of these challenging areas as increased target depth results ...

    • Well control and training scenarios 

      Hamarhaug, Marianne (Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)
      Well control is needed during drilling operations to maintain a stable and safe well. Moving towards deeper wells with higher pressures and temperatures makes the operational working window smaller and more complicated ...

    • Well control considerations in Arctic drilling 

      Kjær, Linn Kristin (Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-13)
      As the petroleum industry is in a constant move north for new exploration and production areas, both challenges and opportunities are many. The vast majority of the northern hemisphere are characterized by low temperatures, ...

    • Well control during extended reach drilling - conventional drilling compared to the reelwell drilling method 

      Veisene, Audun Tufte (Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-15)
      Well control is always of great importance during well operations. The main purpose of well control is to keep downhole pressures in the operating window between pore and fracture pressure. In the case of a well control ...

    • Well control procedures and simulations 

      Litlehamar, Harald (Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)
      A brief introduction is given to a range of well control procedures. It was found that many of the procedures rely on a set of simplifying assumptions. This is particularly true in the hand calculations for designing a ...

    • Well design considerations for CO2 injection at Prelude 

      Haugstad, Stig Bjoeran (Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011-06-15)
      The global economy is set to grow four-fold by 2050, promising economic benefits and a higher standard of living for millions. At the same time the global community is uniting in an effort to combat global warming. Achieving ...

    • Well engineering simulation (WellPlanTM) challenges and uncertainties in drilling engineering 

      Vazquez Taboada, José (Student paper, others, 2014-05-20)
      The report work on this laboratory simulation, will be simulated a Drilling Operation to identify the challenges that this operation carries, and how to mitigated them. Nowadays, the high demand by Operators to drill ...

    • Well P&A Tubing Compaction Method Evaluation and Modelling 

      Assaf, Osama (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-07-13)
      The number of aged fields in the North Sea is increasing, and in few years, and there will be a significant increase in number of wells that need to be permanently plugged and due to low oil prices and other reasons, there ...

    • Well stability in shale formations 

      Tariq, Abdullah (Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-16)
      Well instability in shale formations has been a very major problem due to physiochemical interactions between drilling fluid and formation. In this thesis, chemical, thermal and diffusion effects on the well collapse ...

    • Wellbore stability and rock mechanics study on the Ula field 

      Immerstein, Tonje (Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-20)
      In the years to come more challenging drilling conditions will occur when the last reserves need to be collected. More directional drilling will be used and good wellbore conditions will be necessary to make this possible. ...