... studies such as a phase behavior evaluation for steam hybrid processes to support numerical studies [ Pérez, R. et al., 2020 ; Pérez, R. et al., 2023 ]. The methodology for constructing a phase behavior model based on experimental tests that contemplate Carbon dioxide (CO 2 ) solubility in oil and water...

... at moderate to high pressures, understanding and modeling how pressure affects the phase behavior of a surfactant-brine-oil system is important to the design and implementation of an efficient/cost-effective surfactant flooding project. Typically, however, phase behavior experiments and models of that phase...

... Abstract This paper introduces a new approach for using solvents for enhanced oil recovery from organic-rich unconventional reservoirs. The heavy organic components in the reservoir rock, i.e. bitumen, are included in the phase behavior model using a cubic equation-of-state. The phase behavior...

... neutral. Under such conditions we demonstrated low retention and high performance in terms of phase behavior and coreflood oil recovery. chemical flooding methods fluid dynamics concentration flow in porous media surfactant formulation upstream oil & gas brine surfactant concertation...

..., it is imperative to develop a general framework of theoretical models and algorithm to investigate the effect of pore proximity on phase behavior and miscibility of confined fluids in shale formations. In this study, first, an improved vapor/liquid equilibrium (VLE) calculation model is presented to calculate...

...Multi-Scale Depletion To investigate the phase behavior of the fluid under the confinement effect, we simulate the constant composition expansion (CCE) and constant volume depletion (CVD) using the multi-scale model ( Fig. 2 ). The CCE and CVD are typical PVT tests to investigate bulk fluid...

... Abstract Thermodynamic modeling of phase behavior is one of the most fundamental components in the study of enhanced oil recovery by gas injection. Robust algorithms exist for multiphase equilibrium problems with no capillary pressure as commonly used in compositional reservoir simulation...

... Abstract Good phase behavior is critical for identifying high performance surfactant formulations for coreflood recovery. For conventional CEOR projects, good phase behavior entails high solubilization parameters, rapid equilibration to low viscosity microemulsions and aqueous stability...

... ; Keshavarz et al. 2014 and 2015 ). Investigations into solvent-SAGD phase behavior have shown that in general a better performance of these processes is expected as carbon number of the injected solvent increases. ( Li et al. 2011a ; Mohebati et al. 2012 ; Keshavarz et al. 2015 ). Pilot tests...

... Abstract Conducting surfactant phase behavior experiments above 100°C is challenging and requires specialized methods to minimize health and safety risks. Shifts in optimal salinity can be correlated to temperature. However, data above 100°C is sparse and the correlations have not been...

... for blockage removal. A cubic equation of state is used to model the phase behavior of three-phase mixtures of solvent, hydrocarbons and water. The three-phase flash model is coupled with a rigorous three-phase capillary pressure model to account for the effect of capillary pressure. The capillary pressure...

..., the uncertainties of fluid phase behavior in shale reservoirs pose a great challenge in evaluating the performance of gas injection operation. Shale reservoirs are featured with macro-scale to nano-scale pore size distribution in the porous space. In fractures and macropores, the fluid shows bulk behavior...

... Abstract Surfactant floods can attain high oil recovery if optimum conditions with ultra-low interfacial tensions (IFT) are achieved in the reservoir. A new equation-of-state (EoS) phase behavior model based on the hydrophilic-lipophilic difference (HLD-NAC) has been shown to fit and predict...

... are able to improve the interactions between CO 2 and crude oil leading to reduced miscibility pressure. This paper illustrates an easily applicable procedure to identify the pressure required for full miscibility. Using a pressure resistant sapphire cell the phase behavior of mixtures of different crude...

.... Proportions of the three surfactants for injection in hard sea water were selected using equilibrium phase behavior results and estimates of IFT obtained by a novel technique based on the manner in which oil exits a small, vertically-oriented, rectangular oil-wet capillary cell as it is displaced upward...

... Abstract The objective of this research was to develop a model to predict the optimum phase behavior of chemical formulations for a given oil based on the molecular structure of the surfactants and co-solvents. The model is sufficiently accurate to provide a useful guide to an experimental...

... and phase behavior of microemulsion in the CACF process, particularly microemulsion viscosity and interfacial tension. The proposed model showed good agreement with four published CACF coreflood experiments in which surfactant was not used in alkali and polymer chemical slugs. This model efficiently...

.... Upstream Oil & Gas enhanced recovery Polymer Drive coreflood experiment surfactant retention chemical flooding methods concentration Sodium Hydroxide carbonate Brine viscosity salinity Phase Behavior experiment limestone formulation Oil Recovery Indiana limestone Introduction...

..., generating discontinuities that slow computational time and adversely impact accuracy. surfactant surfactant concentration alcohol surfactant monolayer microemulsion phase behavior khorsandi excess phase enhanced recovery concentration fraction microemulsion chemical flooding methods...

.... This causes formation damage, wettability alteration, and recovery reduction. While asphaltene phase behavior have been studied under static conditions (where equilibrium is imposed), the behavior of asphaltene under dynamic flow conditions is relatively unexplored. Here, we investigate the coupling...