Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
Viser treff 298-317 av 572
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Input Selection for Dimensionless Shear Rates in Herschel-Bulkley and Power-Law Models
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Herschel-Bulkley and Power-Law models are mathematical expressions widely used to describe the pseudoplastic nature of drilling muds. Despite their popularity, these models carry an intrinsic limitation because the consistency ... -
Insights from Boltzmann transformation in solving 1D counter-current spontaneous imbibition at early and late time
(Peer reviewed; Journal article, 2023)Counter-current 1D spontaneous imbibition in scaled form is investigated using Boltzmann transform before and after water meets the closed boundary (early and late time). At early time the system is self-similar and only ... -
Instituting Retarders for Geopolymers Developed for Downhole Applications
(PhD Theses;699, Doctoral thesis, 2023)Geopolymers are a cementitious material that has been under study for many years. The material is noticed as a potential full replacement for traditional cementitious material both in construction and petroleum industry. ... -
Integrated Modelling and Simulation of Wellbore Heat Transfer Processes through High-level Programming, Sensitivity Analysis and Initial Approach with Machine Learning Predictive Models
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-30)During designing of downhole systems and selecting equipment and materials, engineers must consider in-situ conditions before taking decisions in order to be able to handle any operation in a safe and adequate manner. The ... -
Integration of Neural Networks and Wellbore Stability, a Modern Approach to Recognize Drilling Problems Through Computer Vision and Machine Learning
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)Cavings are an endless and valuable source of information when drilling operations is being performed. Multiple parameters can contribute to produce cavings which indicate that failure has occurred or is about to occur ... -
Interaction of silica nanoparticles with chalk and sandstone minerals: Adsorption, fluid/rock interactions in the absence and presence of hydrocarbons
(PhD thesis UiS;452, Doctoral thesis, 2019-04)Conventional oil production from petroleum reservoirs generally leaves more that 50% of the original oil in place unrecovered. This residual oil is the target of various enhanced oil recovery (EOR) techniques that involve ... -
Interfacial Dynamics of Miscible Displacement of Shear-Thinning Fluid in a Vertical Channel
(Peer reviewed; Journal article, 2023)Abstract The displacement of a shear-thinning fluid by a denser and less viscous Newtonian fluid in a vertical duct is investigated using experiments and numerical simulations. We study how shear-thinning and increased ... -
Interfacial tension and CO2 diffusion coefficients for a CO2 + water and n-decane system at pressures of 10 to 160 bar
(Journal article; Peer reviewed, 2018-11)The objective of this study is to address the influence of different CO2 phases and degrees of CO2 saturation on the interfacial tension and the diffusion of CO2 into a hydrocarbon drop. Axisymmetric drop shape analysis ... -
Invasion of CaCO3 particles and polymers into porous formations in presence of fibres
(Peer reviewed; Journal article, 2022)Formation damage can occur through migration of drilling fluid particles and polymers into porous formations. A methodology for assessing formation damage was applied to measure invasion of CaCO3 and polymers into porous ... -
Investigating the impact of solvent salinity on the viscometric functions of IOR polymers
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)One of the promising methods of enhanced oil recovery (EOR) is injection of polymers dissolved in low salinity water. This leads to a dramatic increase in the sweep efficiency due to increased apparent viscosity. It is ... -
Investigating the Necessity of Standardized In-Situ Testing Procedures for One-Part Granite-based Geopolymers: An Experimental Study of the Influence of Loading Rate
(Master thesis, 2023)Ordinary Portland cement (OPC) is the most popular choice for cementing material for petroleum well cementing. Since cement is used in the petroleum industry as an essential part of creating zonal isolation and ensuring ... -
Investigating the Necessity of Standardized In-Situ Testing Procedures for One-Part Granite-based Geopolymers: An Experimental Study of the Influence of Pore Pressure
(Bachelor thesis, 2023)Portland cement has been the primary binder used in well construction due to its availability, affordability, and favorable characteristics. However, alternative options are being explored due to well integrity challenges ... -
Investigating the Necessity of Standardized In-Situ Testing Procedures for One-Part Granite-based Geopolymers: Examining the Impact of Temperature and Confining Pressure through Experimental Study
(Master thesis, 2023)Ordinary Portland cement (OPC) is widely used in primary cementing and plug and abandonment operations due to its well-known properties, global availability, and affordability. However, it has limitations and durability ... -
Investigation of a new application for cellulose nanocrystals: a study of the enhanced oil recovery potential by use of a green additive
(Journal article; Peer reviewed, 2018-02)Cellulose nanocrystals (CNC) were investigated for use in a potential new application, enhanced oil recovery. Core flooding experiments were performed on outcrop sandstone cores using CNC particles dispersed in low salinity ... -
Investigation of Geomechanical Effects and Other Controlling Parameters on Shale Gas Production
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Shale gas reservoirs are mainly characterized by their low matrix permeability, ranging from sub-nanodarcies to tens of microdarcies, which makes the economic production of these reservoirs rare without needing artificial ... -
Investigation of temperature effects on cement bases for shallow gas zone cementing
(Bachelor thesis, 2021)Shallow gas can create challenges for well integrity, local and global environment. During drilling and completion of wells, shallow gas can create dangerous situations resulting to human, environmental and economic ... -
Investigation of the hydraulic integrity of cement plug: Oilwell cementitious materials
(Peer reviewed; Journal article, 2023)The loss of hydraulic integrity in oil and gas wells due to the loss of cement sheath sealability can lead to environmental contamination, annular pressure build-up, and safety threats. In this study, we examine the hydraulic ... -
Investigation of the performance of a heat pump that uses CO2 as working fluid.
(Bachelor thesis, 2023)Climate change is one of the greatest challenges facing the world today, and reducing greenhouse gas emissions is a critical part of mitigating its impacts. Conventional residential heat pumps use Hydrofluorocarbons (HFCs) ... -
A level set approach to Ostwald ripening of trapped gas bubbles in porous media
(Peer reviewed; Journal article, 2022)Ostwald ripening of gas bubbles is a thermodynamic process for mass transfer, which is important for both foam enhanced oil recovery and geological CO2 storage. We present a methodology for simulating Ostwald ripening of ... -
Leveraging Synergies by Combining Polytetrafluorethylene with Polyvinylidene Fluoride for Solvent-Free Graphite Anode Fabrication
(Peer reviewed; Journal article, 2022)Solvent-free graphite anode is fabricated successfully with the synergistic effect of polytetrafluorethylene (PTFE) and polyvinylidene fluoride (PVDF). PTFE acts as a processing aid reagent to form a self-supporting electrode ...