Blar i UiS Brage på forfatter "Fjelde, Ingebret"
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CO2 Convective Dissolution in Oil-Saturated Unconsolidated Porous Media at Reservoir Conditions
Amarasinghe, Widuramina; Fjelde, Ingebret; Giske, Nils Harald; Guo, Ying (Peer reviewed; Journal article, 2021)During CO2 storage, CO2 plume mixes with the water and oil present at the reservoir, initiated by diffusion followed by a density gradient that leads to a convective flow. Studies are available where CO2 convective mixing ... -
CO2 Dissolution and Convection in Oil at Realistic Reservoir Conditions: A Visualization Study.
Amarasinghe, Widuramina Sameendranath; Fjelde, Ingebret; Guo, Ying (Peer reviewed; Journal article, 2021)CO2 convective mixing has been extensively studied for CO2 dissolution in saline water but very limited with the presence of oil. The objective of this work was to visually study the supercritical CO2 (sCO2) dissolution ... -
Effects of permeability on CO2 dissolution and convection at reservoir temperature and pressure conditions: A visualization study
Fjelde, Ingebret; Guo, Ying; Rydland, Jan-Åge; Amarasinghe, Widuramina (Peer reviewed; Journal article, 2020-06)When CO2 is injected into aquifers, CO2 will dissolve into the water phase. CO2 dissolution initiated by diffusion, will increase the density of the water phase and thereby commence the convective flow of CO2. The objective ... -
Effects of Potential Determining Ions and pH on the Wettability of Intermediate Wet Outcrop Limestone
Ginn, Dennis (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-13)The intent of this study is to determine if the wettability of slightly oil wet limestone can be shifted toward water wet using “Smart Water”. The theory of “Smart Water” in carbonates proposes that increasing the composition ... -
Emulsions For Enhanced Oil Recovery EOR
Santos, Nicolas (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06)______Oil recovery projects have become a valuable source in oil industry in the recent years due to market challenges and economic stability. This is a typical practice that have been applied in oil and gas reservoirs to ... -
Improvement of volumetric sweep efficiency during oil production using ECO-clay
Galindo Lopez, Nicolas Mauricio (Master thesis, 2023)Excess water production during oil production is a big challenge that may affect the economics and environmental concerns. Different methods have been developed to reduce water production and improve the efficiency of oil ... -
Periodic CO2 Injection for Improved Storage Capacity and Pressure Management under Intermittent CO2 Supply
Shchipanov, Anton; Kollbotn, Lars; Encinas, Mauro; Fjelde, Ingebret; Berenblyum, Roman (Peer reviewed; Journal article, 2022-01)Storing CO2 in geological formations is an important component of reducing greenhouse gases emissions. The Carbon Capture and Storage (CCS) industry is now in its establishing phase, and if successful, massive storage ... -
Preparation and characterization of Nanocomposite gels for fracture plugging in chalks
Ogienagbon, Adijat (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06)Excessive water production is a common challenge the oil industry is faced with. The lifting, treatment and disposal of produced water can cause a financial strain on the profitability of a hydrocarbon asset or even shorten ... -
Surface Complexation Modelling of Wettability Alteration during Carbonated Water Flooding
Mehdiyev, Fagan; Erzuah, Samuel; Omekeh, Aruoture Voke; Fjelde, Ingebret (Peer reviewed; Journal article, 2022)CO2 capture and utilization is an effective tool in reducing greenhouse gas emissions and hence, combating global warming. In the present study, surface complexation modeling (SCM) with the geochemistry solver, PHREEQ-C, ... -
The effect of redox reactions and EDTA chelation on glauconite, hematite and goethite: A flotation study
Magnussen, Torstein (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)Wettability is on of most important parameter of the reservoir, and to understand it is therefore of high importance (Donaldson & Alam, 2008). A sandstone reservoir can have a complexed minerology and each sandstone is ... -
The Impact of Permeability on Density-Driven Convection During CO2 Storage in Underground Reservoirs
Flaata, Anna Maija Nørstebø (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06-14)Within the context of global warming, CO2 storage in geological reservoirs is seen as one of many strategies to reduce greenhouse gas emissions over the next few decades. In CO2 storage, the water density increases upon ... -
Transport of CO2 In Porous Media – A Visualisation Study
Chauhan, Jaldeepsinh (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-15)The increase in global energy demand coupled with a need to stabilize CO2 emission levels has called for the development of a strategy with the potential to make energy `greener'. One such strategy is Carbon Capture ... -
A Visual Investigation of CO2 Convective Mixing in Water and Oil at the Pore Scale Using a Micromodel Apparatus at Reservoir Conditions
Amarasinghe, Widuramina Sameendranath; Farzaneh, Seyed; Fjelde, Ingebret; Sohrabi, M; Guo, Ying (Peer reviewed; Journal article, 2021-01)CO2 convective mixing in water has been visualized in Hele-Shaw and PVT cell experiments but not at the pore scale. Furthermore, CO2 convective mixing in a three-phase system (i.e., CO2 in the presence of both water and ... -
Visual investigation of CO2 dissolution and convection in heterogeneous porous media at reservoir temperature and pressure conditions
Amarasinghe, Widuramina Sameendranath; Fjelde, Ingebret; Flaata, Anna Maija Nørstebø (Peer reviewed; Journal article, 2021)CO2 convective mixing in saline aquifers has been widely studied numerically and experimentally. Reservoir heterogeneity is significant for CO2 convective mixing and experimental studies are still limited. In this study, ...