Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
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Challenges associated with mercury occurrence on the Norwegian Continental Shelf
(Master thesis, 2023)The thesis includes a review of the heavy metal mercury, with focus on its origin, effect on the environment, and its role in the petroleum industry. Mercury emissions from the petroleum industry in Norway is looked into ... -
Characteristic forced and spontaneous imbibition behavior in strongly water-wet sandstones based on experiments and simulation
(Peer reviewed; Journal article, 2022-05)Forced and spontaneous imbibition of water is performed to displace oil from strongly water-wet Gray Berea (~130 mD) and Bentheimer (~1900 mD) sandstone core plugs. Two nonpolar oils (n-heptane and Marcol-82) were used as ... -
Characterization of Annular Cement Permeability of a Logged Well Section Using Pressure-Pulse Decay Measurements
(Peer reviewed; Journal article, 2022)The cement behind casings is an important barrier element in wells that should provide zonal isolation along the well. The hardened cement does not always isolate permeable formations, either due to placement issues or ... -
Characterization of annulus well cement quality to estimate the leakage potential in cement well barriers
(PhD Theses;676, Doctoral thesis, 2022-11)Cement is nowadays the most used material that is placed inside of wells as a barrier element to ensure zonal isolation and avoid migration of fluids between the reservoir and surface. Sometimes the well integrity can be ... -
Characterization of the mud displacement in an enlarged wellbore: An integrated rock-fluid model
(Peer reviewed; Journal article, 2022)Cement-mud displacement plays a crucial role in the sealability of cement sheaths. Irregular geometric features of a wellbore due to washout can have a negative impact on mud and cement mobilization. An unstable interface ... -
Classification of Hydraulic Flow Units in the Whicher Range Field
(Bachelor thesis, 2021)Determination of reservoir rock type is one of the most important tasks for simulation, modelling and prediction of the hydrocarbon reservoir behavior. Hence, using methods that predict rock types as accurately as possible, ... -
Classification of Hydraulic Flow Units in the Whicher Range Field
(Bachelor thesis, 2021)Determination of reservoir rock type is one of the most important tasks for simulation, modelling and prediction of the hydrocarbon reservoir behavior. Hence, using methods that predict rock types as accurately as possible, ... -
Closed-loop well construction optimization (CLWCO) using stochastic approach under time uncertainty
(Peer reviewed; Journal article, 2021)There is a digital step change taking place in well construction today. More and better data will become available for a vast number of analyses. The well construction process is complicated and includes several hundred ... -
CO2 capture by adsorption
(Master thesis, 2021)The increasing concentration of CO2 in the atmosphere entails casualties, mainly global warming issues. For quite a long time, considerable efforts have been dedicated to suppressing this issue. Amongst the proposed ... -
CO2 hydrogenation to methanol over partially embedded Cu within Zn-Al oxide and the effect of indium
(Peer reviewed; Journal article, 2021-08)Developing effective catalysts for CO2 hydrogenation to methanol is an important step to improve the efficiency of a promising process for green synthesis of fuels and chemicals. Optimizing the Cu dispersion is often the ... -
CO2 hydrogenation to methanol: the structure–activityrelationships of different catalyst systems
(Peer reviewed; Journal article, 2020-03)CO2 hydrogenation to methanol is a promising environmental-friendly route for combatting CO2 emissions. Methanol can be used to produce a variety of chemicals and is also an alternative fuel. The CO2-to-methanol process ... -
CO2 Injection in Shales for CCUS
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-08-15)Shale gas production has had great impact on energy supply and fuel prices. Due to low permeability and reservoir complexity the recovery factors are still very low. A promising alternative to pressure depletion is injection ... -
CO2 mass transfer and interfacial studies for application of carbonated water injection: Axisymmetric pendant drop analysis for simultaneous calculation of CO2 diffusion coefficient and interfacial tension
(PhD thesis UiS;439, Doctoral thesis, 2019-02)Worldwide, enhanced oil recovery (EOR) projects have been on a gradual rise since early 2000, especially EOR by CO2 injection. Globally, at present, EOR by CO2 injection contributes approximately 67.5% of projects (83 of ... -
CO2 methanation on hydrotalcite-derived catalysts and structured reactors: A review
(Peer reviewed; Journal article, 2020)CO2 methanation reaction has attracted renewed interest since the power-to-gas (PtG) concept emerged as a promising alternative for CO2 emission abatement using surplus renewable electricity. Although the reaction has been ... -
CO2 methanation on Ni-Fe based catalysts: Mechanistic and structured reactor study
(PhD thesis UiS;607, Doctoral thesis, 2021-10)The clean energy transition towards renewable energy sources has increased the need for large-scale and long-term energy storage systems. Power-to-Gas concept offers the solution to convert surplus electrical power into ... -
CO2 Plume Migration in the Stø Formation: A simulation study
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)The need for improving the quality of our environment by reducing CO2 emissions and in the meantime increasing the recovery of hydrocarbons could be a mutually beneficial situation. Therefore, having additional reserves ... -
Colloid transport in a single fracture-matrix system: Gravity effects, influence of colloid size and density
(Journal article; Peer reviewed, 2018-10)A numerical model was developed to investigate the influence of gravitational force on the transport of colloids in a single horizontal fracture–matrix system. Along with major transport phenomena, prominence was given to ... -
Compact Subsea Pipe Separator- Experimental Investigation of Flow Regime in an Inclined Pipe
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-14)The production of petroleum from well is always accompanied by water production, which causes several problems such as loss of pressure in the production line, environmental pollution, corrosion, and issues in transportation ... -
Comparative Analysis and Enhancement of Simplified Drilling Process Simulation Models and Exploring Machine Learning for Real-Time Optimization
(Bachelor thesis, 2023)Real-time optimization of drilling processes is vital for the efficient and safe operation of the oil and gas industry. For this, fast and robust models are required to enable automation safety strategies. Many existing ... -
Comparison Between a Numerical Model and an Analytical Model for Drag Prediction
(Master thesis, 2022)High torque and drag create problems in directional wells. Directional wells have increased in inclination and length over the years, whereas the extended reach wells (ERW) are particularly prone to torque and drag ...