Blar i NTNU Open på forfatter "Torsæter, Ole"
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Polymer-functionalized silica nanoparticles for improving water flood sweep efficiency in Berea sandstones
Bila, Alberto; Stensen, Jan Åge; Torsæter, Ole (Peer reviewed; Journal article, 2020)Extraction of oil trapped after primary and secondary oil production stages still poses many challenges in the oil industry. Therefore, innovative enhanced oil recovery (EOR) technologies are required to run the production ... -
Pore throat structure characteristics and its effect on flow behavior in Gaotaizi tight siltstone reservoir, Northern Songliao Basin
Zhang, Jingya; Liu, Guangdi; Torsæter, Ole; Tao, Shizhen; Jiang, Mengya; Li, Guohui; Zhang, Shixiang (Peer reviewed; Journal article, 2020)The features of pore and throat structure of an unconventional reservoir are very complex due to multiscale pore-throat size and various pore types and thus hard to characterize. In this study, thin sections, field emission ... -
Pore-Scale Investigation of the Impact of Silica-Based Nanofluid on Residual Oil
Akarri, Salem (Master thesis, 2019)The employment of X-ray computed microtomography has been an excellent 3D imaging technique to explore subsurface multiphase flow and trapping at pore-scale which are important for environmental applications and ... -
Potential technical solutions to recover tight oil: Literature and simulation study of tight oil development
Zhang, Kai (Master thesis, 2014)Over past decades, technology innovation drove unconventional resourcesbecome conventional. Incorporating the technologies applied in shale gasdevelopment, exploiting tight oil comes into stage recently. Advanced ... -
Qualitative and quantitative experimental study of convective mixing process during storage of CO2 in heterogeneous saline aquifers
Taheri, Amir; Torsæter, Ole; Lindeberg, Erik Gøsta Brun; Hadia, Nanji; Wessel-Berg, Dag (Journal article; Peer reviewed, 2018)CO2 dissolution is considered as one of the most promising mechanisms for trapping of free-phase CO2 into brine. It causes an increased density of the brine and initiation of gravitational instability that eventually leads ... -
Simulation of CO2 Injection in a Reservoir with an Underlying Paleo Residual Oil Zone
Tadesse, Nathaniel Solomon (Master thesis, 2018)Paleo residual oil zones (PROZs) are zones below the oil-water contact (OWC) that contain residual oil. These types of zones exist in many fields around the world, but is often given little attention, due to traditionally ... -
Simulation of Surfactant EOR in a Mechanistic Model with Fracture and Ekofisk Properties
Skår, Helene (Master thesis, 2014)Large amounts of oil are left in reservoirs after primary and secondary recovery. To recovery as much of the remaining oil as possible, EOR techniques as chemical flooding is considered. Naturally fractured carbonates have ... -
Simulation study of density-driven natural convection mechanism in isotropic and anisotropic brine aquifers using a black oil reservoir simulator
Taheri, Amir; Wessel-Berg, Dag; Torsæter, Ole (Journal article; Peer reviewed, 2013)For simulation models of density-driven natural convection in brine aquifers gravitational instabilities are usually triggered by numerical round off errors. Using this method for initiating onset of convective flow, ... -
Simulation study of surfactant injection in a fractured core
Cheng, Xiaoqian; Kleppe, Jon; Torsæter, Ole (Journal article; Peer reviewed, 2019)Surfactant flooding could be used to improve water flooding in fractured reservoirs due to the main mechanisms of wettability alteration and interfacial tension reduction. However, the surfactant flooding in fractured ... -
Smart Proxy Modeling of a Fractured Reservoir Model for Production Optimization: Implementation of Metaheuristic Algorithm and Probabilistic Application
Ng, Cuthbert Shang Wui; Jahanbani Ghahfarokhi, Ashkan; Nait Amar, Menad; Torsæter, Ole (Journal article; Peer reviewed, 2021)Numerical reservoir simulation has been recognized as one of the most frequently used aids in reservoir management. Despite having high calculability performance, it presents an acute shortcoming, namely the long computational ... -
Stability Analysis of CO2-Brine Immiscible Flow in Homogeneous Core Samples
Westergaard, Erik Andreas (Master thesis, 2013)Carbon Capture and Storage (CCS) in saline aquifers is drawing attention as a potential method to reduce the CO2-level in the atmosphere and hence mitigate the effect of global warming. In order to understand the complicated ... -
Study of non-local equilibrium options in reservoir simulators
Pallotta, Quentin Pierre Jean (Master thesis, 2013)AbstractThe recent IT improvements in areas such as CPU speed, memory, parallel computing and programming languages have allowed more complex physical models to be created for reservoir simulators. One of the issues that ... -
Surfactant Enhanced Oil Recovery in Fractured Reservoirs: Simulation study of surfactant spontaneous and dynamic imbibition
Cheng, Xiaoqian (Doctoral theses at NTNU;2019:387, Doctoral thesis, 2019)Water flooding has poor performance in fractured reservoirs with mixed- or oil-wet wettability. Surfactant could be used to improve oil recovery by changing wettability to more water-wet or reducing water/oil interfacial ... -
Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization - A Guide for Contact Angle Modification.
Vucovic, Tomislav; Røstad, Jostein; Farooq, Umer; Torsæter, Ole; van der Net, Antje (Peer reviewed; Journal article, 2023)To investigate the effects of wettability on multiphase flow in porous media, glass bead packs or micromodels are commonly used. Their wettability can be altered by the surface treatment method–silanization. Although ... -
The Effect of Brine Composition and Rock Type on Oil Recovery by the Use of Combined Low-Salinity Waterflooding and Surfactant Flooding: A Literature Review and Experimental Study
Enge, Ida Baltzersen (Master thesis, 2014)The possibility of achieving incremental oil recovery by the use of low salinity injection water has been demonstrated by numerous laboratory experiments and an increasing amount of field trials. The underlying mechanisms ... -
The Impact of Nanoparticle Adsorption on Transport and Wettability Alteration in Water-Wet Berea Sandstone: An Experimental Study.
Li, Shidong; Torsæter, Ole; Lau, Hon Chung; Hadia, Nanji; Stubbs, Ludger P. (Journal article; Peer reviewed, 2019)Wettability alteration was proposed as one of the enhanced oil recovery (EOR) mechanisms for nanoparticle fluid (nanofluid) flooding. The effect of nanoparticle adsorption on wettability alteration was investigated by ... -
The Potential of Hydrophilic Silica Nanoparticles for EOR Purposes: A literateur review and an experimental study
Engeset, Bjørnar (Master thesis, 2012)As the world's population is expanding, the global demand for energy will continue to increase. The global demand for all energy will grow by over 50 % the next 25 years. New technology and renewable energy will help us ... -
Theoretical and numerical study of polymer flooding
Benavides, Sebastian Osvaldo (Master thesis, 2015)I dette arbeidet, en teoretisk og numerisk studie av polymer oversvømmelse har blitt gjennomført. Den består av et litteratur studie av polymer oversvømmelse, de parameterne som påvirker oppførselen av denne og implikasjonen ... -
Thermodynamics of Nanoscale Films and Fluid Volumes
Strøm, Bjørn André (Doctoral theses at NTNU;2021:166, Doctoral thesis, 2021) -
Using Microfluidics to Study the EOR Potential of Nanocellulose
Salvesen, Siri Hjelt (Master thesis, 2018)As many of the existing oil reservoirs show declining production, there is a need for research on enhanced oil recovery (EOR) techniques that can accelerate further production. The use of nanoparticles to enhance oil ...