Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
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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 ... -
Comparison of different configurations of a solar-assisted ground-source CO2 heat pump system for space and water heating using Taguchi-Grey Relational analysis
(Peer reviewed; Journal article, 2023)This work deals with the comparison of different optimized configurations of solar-assisted ground-source CO2 heat pump systems using the Taguchi method and Grey Relational Analysis (GRA) when used for simultaneous space ... -
A Comparison of Different Models for Probabilistic Kick Tolerance Calculations
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-14)Kick tolerance is an evaluation of how large kick sizes an open hole section can withstand without threatening the formation integrity at the shoe. If a certain kick size cannot be handled safely, the planned open hole ... -
Comparison of Lost Circulation Material Sealing Effectiveness in Water-Based and Oil-Based Drilling Fluids and Under Conditions of Mechanical Shear and High Differential Pressures
(Peer reviewed; Journal article, 2022)A study was conducted to assess the performance of granular and fibrous lost circulation materials as preventative treatments and in remedial treatment of lost circulation in water-based and oil-based drilling fluids. For ... -
Compatibility between API equations and design limits plots for ellipse and circle of plasticity
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-01)This project presents a methodology to superimpose the API uniaxial and triaxial limits on the design limits plot. Complications due to a recent change of axis are resolved, producing practical design limits plots that ... -
A Comprehensive Completion Method Selection Based on Probability and Impact Matrix for Iris Production HPHT Well
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-14)HPHT well completion require special attention to well design. The conservatism of well completion is constantly put to the test by introducing and qualifying new equipment meant to enhance well performance, minimize HS&E ... -
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, ... -
Computational Fluid Dynamics (CFD) study to optimize simulated pressure drop across liner hangers: A field trail approach to improve well integrity by optimizing ECD simulations during well cementing.
(Masteroppgave/UIS-TN-ISØP/2020;, Master thesis, 2020-06-15)Optimizing cementing parameters during the cement job is a challenging task. Accurate pre-job analysis is essential to elude breakdown of the formation to obtain a successful cement job. If the equivalent circulation density ... -
Computational fluid dynamics simulation of buoyant mixing of miscible fluids in a tilted tube
(Peer reviewed; Journal article, 2021)Buoyancy-driven flows and mixing of fluids with different densities occur frequently both in nature and as part of industrial processes within chemical and petroleum engineering. This work investigates the buoyant exchange ... -
Concentric cylinder viscometer flows of Herschel-Bulkley fluids
(Peer reviewed; Journal article, 2019)Drilling fluids and well cements are example non-Newtonian fluids that are used for geothermal and petroleum well construction. Measurement of the non-Newtonian fluid viscosities are normally performed using a concentric ...