... equation. The relative permeability and capillary pressure curves are altered based on zeta potential shifts, which resembles the wettability alteration process. The SCM zeta potentials are compared with the experimental zeta-potential measurements, while the multiphase transport model coupled...

... permeability. This study aims to enhance oil recovery from tight carbonates by virtue of wettability alteration using surfactants. Twenty different surfactants of different classes and different functional groups are systematically evaluated by first testing their aqueous stability at reservoir conditions...

... and electrical double layer expansions, which cause wettability alterations at the rock surface. Little attention seems to have been placed on fluid-fluid interactions as a potential mechanism in displacement processes. In this work, we investigate the role of fluid-fluid interactions in improved oil recovery...

... for wettability alteration. Several underlying mechanisms were proposed to explain the improved oil recovery caused by EWI. We classify them in two types: first is based on fluid-fluid interactions only, such as, pH increase and soap creation ( McGuire et al ., 2005 ) and interfacial viscoelasticity...

..., which can be explained by the wettability alteration by NPs. Comparing the mean particle size of the NP solutions with the pore-throat size distribution of the plugs evaluates pore accessibility of core plugs. From MICP and SEM analyses, most pores of the rock samples have pore-throat radius...

... to the urea slug did not have any benefit. There was no significant difference in oil recovery when the test pressure was below or above MMP. The main recovery mechanisms were oil swelling, viscosity reduction, low interfacial tension and wettability alteration in this effort. Multiple researchers reported...

... Abstract Wettability Alteration (WA) as an Enhanced Oil Recovery (EOR) technique is screened for an oil wet carbonate offshore reservoir in this study. Surfactants can be used to change the rock wettability from oil-wet to water-wet conditions and can lead to unlocking significant incremental...

... in this work. Through on our study, the priority of wettability alteration and phase change with a function salinity was clarified. Besides, the imbibition dynamics of microemulsion-forming surfactants at different salinities were provided, and further understanding about the equilibrium process...

... time fluid dynamics modeling & simulation hydraulic fracturing structural geology water saturation formation matrix relative permeability saturation initial water saturation oil production productivity fracture wettability alteration scenario surface area imbibition initial...

.... 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...

... permeability recovery wettability alteration reservoir calcite injection Oil Recovery Introduction Waterflooding (WF) has been used in oil industry since 1890 and is currently widely used all over the world as a secondary EOR method by many major companies. WF performance is usually affected...

... active additives, surfactant molecules interact with the rock surface to enhance oil recovery through wettability alteration combined with interfacial tension (IFT) reduction. The change in capillary force as the wettability is altered by the surfactant leads to oil being expelled as water imbibes...

... wettability alteration Foam Generation Oil Recovery crude oil surfactant pre-flood injection surfactant solution 2 Introduction A CO 2 foam field pilot project is ongoing in the Permian Basin of West Texas utilizing CO 2 foam mobility control for enhanced oil recovery (EOR) ( Alcorn et al...

... in the absence of an oil phase. Water chemistry (salinity, pH, ion identity and concentration) partially determines the dominant wettability alteration mode. Clays are important for incremental recovery, but not essential. Spatial heterogeneity inhibits the effectiveness of low salinity water...

... effectiveness of the chemical treatments. The results of this field trial reveal that injecting a proper wettability altering agent can improve oil recovery from shale oil reservoirs by up to 25% of the estimated ultimate recovery (EUR). The results of numerical simulations also show that the additional oil...

... for the Bakken and Permian basins relied upon wettability alteration as the oil recovery mechanism; however, no significant oil recovery compared to brine was seen from wettability-altering formulations using EF and Canadian Bakken shale rock and fluids. Several imbibition tests showed that baseline oil recovery...

... samples were first measured in brines with different salinities. Then the minerals were aged separately with a medium crude oil with sufficient polar components to investigate their tendency for wettability alteration. As well, oil and water distributions inside tight core samples were scanned...

.../squeezing and wettability alteration, were visually observed. These properties promise this NS as a green displacement agent for chemical EOR. enhanced recovery NSF Upstream Oil & Gas displacement test chemical flooding methods viscosity mechanism application Efficiency eor efficiency...

... show that for the model rock used, brine composition does not change significantly from contact with rock surfaces. Since wettability alteration was minimized by use of low-temperature and short ageing time, recovery correlates better with changes in interfacial rheology. For results showing...

... wettability alteration and IFT reduction eventually dictates the potential of that surfactant in improving oil recovery by the process of imbibition. The process of spontaneous imbibition is majorly driven by capillary forces. Capillary forces originate from the fact that the pores of the reservoir rock...