Blar i UiS Brage på forfatter "Andersen, Pål Østebø"
-
Relative Permeability and Capillary Pressure Estimation from Core-flooding Experiments accounting for Capillary End Effects.
Pulido Vasquez, Eliana (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-07)Abstract Relative Permeability and Capillary Pressure Estimation from Core-flooding Experiments studying Capillary End Effects Relative permeability (Relperm) and capillary pressure (Cp) are fundamental input ... -
Reservoir Simulation of Chemical Inflow Tracers in Horizontal Wells
Bergo, Cathrine (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06-14)Conventional production logging tools can be challenging to deploy and interpret in long horizontal wells. Inflow tracer technology can address these challenges, by allowing continuous monitoring of the horizontal section. ... -
Reservoir simulation of measurements with an innovative tool to detect oil-water-contact
Helgø, Johan (Master thesis, 2022)Hydrotell is developing a tool which will measure the pressure difference between oil phase and water phase in reservoirs with hydraulic conductivity. This pressure difference is then used to locate the free water level ... -
Residual Gas Impact on Water Influx and Recovery Potential
Oswald, Christine (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020)Whereas residual gas has been studied by many researchers, there has been little discussion about paleo residual gas. When encountered in a well, these dead gas columns are usually immobile, and the well is considered dry. ... -
Review of Experimental Sorption Studies of CO2 and CH4 in Shales
Klewiah, Isaac; Berawala, Dhruvit Satishchandra; Walker, Hans Christian Alexander; Andersen, Pål Østebø; Nadeau, Paul Henry (Journal article; Peer reviewed, 2019-10)In recent years CO2 injection in shale has been investigated with aim to enhance shale gas recovery (ESGR) and permanently sequester CO2. This paper reviews the state of research on CH4 and CO2 sorption in shale. We present ... -
Rigorous Connectionist Models to Predict Carbon Dioxide Solubility in Various Ionic Liquids
Ouaer, Hocine; Hosseini, Amir Hossein; Amar, Menad Nait; Ben Seghier, Mohamed El Amine; Ghriga, Mohammed Abdelfatah; Nabipour, Narjes; Andersen, Pål Østebø; Mosavi, Amir; Shamshirband, Shahaboddin (Journal article; Peer reviewed, 2020-01)Estimating the solubility of carbon dioxide in ionic liquids, using reliable models, is of paramount importance from both environmental and economic points of view. In this regard, the current research aims at evaluating ... -
Simulation and Prediction of Countercurrent Spontaneous Imbibition at Early and Late Time Using Physics-Informed Neural Networks
Abbasi, Jassem; Andersen, Pål Østebø (Peer reviewed; Journal article, 2023-09)The application of physics-informed neural networks (PINNs) is investigated for the first time in solving the one-dimensional countercurrent spontaneous imbibition (COUCSI) problem at both early and late time (i.e., before ... -
Simulation of immiscible WAG injection in a stratified reservoir -- performance characterization using a new dimensionless number
Nygård, Jan Inge; Andersen, Pål Østebø (Peer reviewed; Journal article, 2019)Water alternating gas (WAG) is a well‐established enhanced‐oil‐recovery process where gas and water are injected in alternating fashion. Good volumetric sweep is achieved as water and gas target both the oil residing in ... -
Simulation of Water Management Processes
Nygård, Jan Inge (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06-15)Conformance control practices are commonly used to tackle issues related with injected fluids bypassing potentially oil-bearing formations, due to the presence of conductive fractures. To improve the prospect of such a ... -
Simulation study of co-current spontaneous imbibition
Linevyuk, Nataliya (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-08-27)Spontaneous imbibition is the main driving mechanism for obtaining high recovery from the naturally fractured reservoirs with low permeable matrix. The present thesis presents the results of a simulation study of ... -
Simulation study of wettability alteration enhanced oil recovery during co-current spontaneous imbibition
Andersen, Pål Østebø; Ahmed, Sameer (Peer reviewed; Journal article, 2020-09)Naturally fractured reservoirs are highly dependent on capillary forces to recover hydrocarbons during water injection. Water can spontaneously imbibe and expel oil if positive capillary forces exist; purely counter-current ... -
Simulation study of wettability alteration enhanced oil recovery during co-current spontaneous imbibition
Andersen, Pål Østebø; Ahmed, Sameer (Peer reviewed; Journal article, 2020)Naturally fractured reservoirs are highly dependent on capillary forces to recover hydrocarbons during water injection. Water can spontaneously imbibe and expel oil if positive capillary forces exist; purely counter-current ... -
Steady State Gas Flow from Tight Shale Matrix Subject to Water Blocking
Andersen, Pål Østebø (Peer reviewed; Journal article, 2021)This work studies 1D steady-state flow of gas from compressible shale matrix subject to water blocking toward a neighboring fracture. Water blocking is a capillary end effect causing wetting phase (e.g., water) to accumulate ... -
Steady State Relative Permeability Experiments with Capillary End Effects: Analytical Solutions including Derivation of the Intercept Method
Andersen, Pål Østebø; Zhou, Yingfang (Peer reviewed; Journal article, 2020-04)Steady state relative permeability experiments are performed by coinjection of two (or more) immiscible fluids. The relative permeabilities can be calculated directly from the stabilized pressure drop and saturation of the ... -
Steady State Relative Permeability Experiments with Capillary End Effects: Analytical Solutions including Derivation of the Intercept Method
Andersen, Pål Østebø; Zhou, Yingfang (Journal article; Peer reviewed, 2020-09)Steady state relative permeability experiments are performed by coinjection of two (or more) immiscible fluids. The relative permeabilities can be calculated directly from the stabilized pressure drop and saturation of the ... -
The effect of wettability on waterflooding and relative permeability at quite water-wet conditions in chalk core
Radenkovic, Katarina (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06)The effect of performing waterflooding in chalk has been previously tested with a purpose of Enhanced Oil recovery. Regarding oil recovery processes, rock wettability is the key parameter determining transport of fluid ... -
Theoretical Comparison of Two Setups for Capillary Pressure Measurement by Centrifuge
Abbasi, Jassem; Andersen, Pål Østebø (Peer reviewed; Journal article, 2022)There are several approaches for the calculation of capillary pressure curves in porous media including the centrifuge method. In this work, a new installation of centrifuge test is introduced and compared with the traditional ... -
Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores
Kallesten, Emanuela Iedidia; Cherif, Yosra; Madland, Merete Vadla; Korsnes, Reidar Inge; Omdal, Edvard; Andersen, Pål Østebø; Zimmermann, Udo (Peer reviewed; Journal article, 2020-11)Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ... -
Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores
Kallesten, Emanuela Iedidia; Cherif, Yosra; Madland, Merete Vadla; Korsnes, Reidar Inge; Omdal, Edvard; Andersen, Pål Østebø; Zimmermann, Udo (Peer reviewed; Journal article, 2020-03)Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ... -
Water flooding of Eldfisk reservoir cores
Cherif, Yosra (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Enhanced Oil Recovery (EOR) and the effect of the aqueous chemistry on the mechanical strength of chalk have been extensively studied over the years. This is simply because the stability of the reservoir system is affected ...