Department of Energy and Petroleum Engineering (TN-IEP)
Recent Submissions
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Optimizing the separation factor along a directional well trajectory to minimize collision risk
(Peer reviewed; Journal article, 2020-04)Optimizing the trajectory of directional wellbores is essential to minimize drilling costs and the impacts of potential drilling problems. It poses multi-objective optimization challenges. Well-design optimization models ... -
Numerical Investigation of Non-Darcy Flow Regime Transitions in Shale Gas Production
(Peer reviewed; Journal article, 2020-07)Shale gas reservoirs are organic rich formations with often ultra-low permeability. Gas is stored in free and adsorbed form. Conventional Darcy flow cannot fully describe the gas transport in such porous media. It is thus ... -
A compressible viscous three-phase model for porous media flow based on the theory of mixtures
(Peer reviewed; Journal article, 2020)In this paper we focus on a general model to describe compressible and immiscible three-phase flow in porous media. The underlying idea is to replace Darcy’s law by more general momentum balance equations. In particular, ... -
Mathematical Modelling of the Drilling Process for Real-time Applications in Drilling Simulation, Interpretation and Assistance
(PhD thesis UiS;, no.;506, Doctoral thesis, 2019)For the last thirty years, mathematical modelling has been used to develop software solutions that support drilling engineering activities at the planning stage of drilling operations. But it is only for the last decade ... -
Mathematical modeling of compressible and incompressible multiphase flow based on mixture theory
(PhD thesis UiS 501;, Doctoral thesis, 2020)MIXTURE THEORY has been developed based on balance laws and conservation principles which is well known in continuum mechanics, and has been widely applied to systems which can be characterized as a mixture of interacting ... -
Mathematical modeling of cancer cell migration - from in vitro to in vivo
(PhD thesis UiS;511, Doctoral thesis, 2020-05)Tumors has been the object of computational model studies for nearly five decades. The early models considered simple tumor growth based on nutrients, whereas models now can simulate from microscale gene expressions in ... -
Global ecosystem service values in climate class transitions
(Peer reviewed; Journal article, 2020-01)Ecosystem service assessments facilitate the valuation of nature and support decision-making. Ecosystem services are connected to climate; however, ecosystem service values affected by climate change remain unclear. We ... -
Impact of Wettability on Rock Mechanics and Oil Recovery: A Comparative Study on Different Outcrop Chalks
(PhD thesis UiS;502, Doctoral thesis, 2020-04)Chalk reservoirs are highly fractured and are known for their remarkable storage capacity as a reservoir rock for the petroleum industry. Chalk is a sedimentary carbonate rock primarily made up of calcium carbonate (calcite, ... -
Experimental investigation of the high-pressure sealing capacity for three different LCM systems
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)As loss of circulation is still a major problem in the drilling industry, hundreds of lost circulation treatments are available on the market. The goal of this thesis is not to present a complete list of available products, ... -
Analysis of flame propagation using an imaging technique BOS (Background Oriented Schlieren) and PIV (Particle Imaging Velocimetry).
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)An experimental and simulation work has been conducted to study premixed flame propagation using imaging technique BOS (background oriented schlieren) and PIV (particle imaging velocimetry). Flame images obtained from ... -
Water flooding of Eldfisk reservoir cores
(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 ... -
Plug & abandonment of offshore wells: Ensuring long-term well integrity and cost-efficiency
(Peer reviewed; Journal article, 2019-10)There is an upcoming "P&A wave" of wells that need to be permanently plugged and abandoned, especially in mature, offshore areas such as the North Sea and Gulf of Mexico. It is important to ensure that plugged wells do not ... -
LNG marine system design, critical appraisal of IGF Code requirements, parametric optimizing of design inputs and mathematical modeling of LNG/NG leakage spread in the Tank Connection Space.
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)The European government is concerned about reducing greenhouse gas emissions due to climate change and global warming. Therefore, all sectors within the European Union are committed to achieving the Paris agreement goals, ... -
Non-Destructive Activation of Pine Wood (Picea Abies)
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)This study investigates a novel technique of non-destructive activation(NDA) of Pine wood (Picea Abies) via the aid of chemical activation in the presence of a metal additive. Two additives (Cu and Al) were considered in ... -
Optimization of Well Location in a 5-Spot Pattern
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-12-14)Deciding to choose the best alternative from a set of courses of action is a repeatable activity in most organizations (Ahti Salo et al., 2011). Companies, for example, commence some research and development projects for ... -
Analysis of pore pressure measurements in exploration wells in the Norwegian North Sea
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-12)The aim of this thesis was to examine the pore pressure measurements in the Norwegian North Sea. To study the possibility of the overpressure being an indicator that can increase the probability of hydrocarbon discoveries ... -
Review of Experimental Sorption Studies of CO2 and CH4 in Shales
(Journal article; Peer reviewed, 2019-10)In recent years CO2 injection in shale has been investigated with aim to enhance shale gas recovery (ESGR) and permanently sequester CO2. This paper reviews the state of research on CH4 and CO2 sorption in shale. We present ... -
A Hierarchy of Non-Equilibrium Two-Phase Flow Models
(Journal article; Peer reviewed, 2019-10)We review and extend a hierarchy of relaxation models for two-phase flow. The models are derived from the non-equilibrium Baer–Nunziato model, which is endowed with relaxation source terms to drive it towards equilibrium. ... -
Effect of Salts on Interfacial Tension and CO2 Mass Transfer in Carbonated Water Injection
(Journal article; Peer reviewed, 2019-02)Carbonated water injection (CWI) is a promising enhanced oil recovery (EOR) and CO2 sequestration method, which overcomes the problems associated with CO2 EOR. CO2 mass transfer and interfacial tension (IFT) are important ... -
Analytical solutions for forced and spontaneous imbibition accounting for viscous coupling
(Journal article; Peer reviewed, 2019-11-22)Fluid-fluid momentum transfer can cause higher flow resistance when fluids flow in opposite directions as compared to the same direction. Conventional modelling of flow in porous media using simple, saturation dependent relative ...
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