... saturations averaged 55.8%. The oil was displaced initially with a waterflood for 3-5 pore volumes. The waterflood, on average, recovered 60.7% of original oil in place (OOIP). Oil cut was consistently zero at the conclusion of the waterflood suggesting the cores were at or near residual oil saturation...

... fingering/channeling. Koval (1963) found a very simple approach which captures the essence of the combination of fingering and channeling for miscible systems, accounting for both the impacts of mobility ratio and heterogeneity. The fractional flow for solvent, F s is related to the solvent saturation S...

... concentration efficiency c-apg saturation emulsification hsw cmc Introduction With the continuous development of the greenhouse effect, the excessive emission of carbon dioxide (CO 2 ), one of the main causes of this effect, has attracted widespread attention. The effective use of CO 2 to benefit...

..., gas composition, water saturation, oil saturation, and rock permeability. Surfactant adsorption on the rock and its partition in the oil phase was also measured. These results were used to estimate parameters to be entered into foam models available in commercial reservoir simulators. Other fields...

... injection retention asp asp coreflood saturation geologist chemical flooding methods reservoir formulation development concentration Introduction The combination of alkali, surfactant, and polymer components within the ASP approach offered the potential to yield considerable value...

... hydrogen can be recovered. Full reversibility means that all the injectant will be recovered. Then, we examine, case by case, how shock formation, trapping hysteresis and gravity impact flow reversibility. Finally, we study how the shape of fractional flow curve and residual saturation hysteresis curve...

... characterization permeability cutoff variation fluid dynamics waterflooding flow in porous media enhanced recovery heterogeneity efficiency society saturation fraction simulator grid mmstb Introduction Waterflooding, a cost-effective and widely adopted secondary oil recovery method...

... Abstract This paper presents a modified Capillary Desaturation Curve (CDC) model to capture the effect of the capillary number ( N c ) on residual oil saturation (Sor) for carbonate reservoirs during water- and polymer flooding. The proposed model is implemented in a multicomponent...

... mechanism that was triggered by reducing the salinity of injected brine is much more dependent on the remaining oil saturation, in order for it to have a significant positive influence on oil recovery. To the author's best knowledge, there has not been a systematic experimental investigation that compared...

... and oil residual saturation, we carried out a sensitivity analysis by varying the injected water salinity, polymer concentration, and injection scheme. The field-scale simulation results revealed the positive effect of injection polymer concentration on polymer viscosity, and thus, oil displacement...

... saturation in a much shorter injection period. The experimental results demonstrate that foam is triggered more rapidly at low fg. Moreover, the retardation of foam propagation at transient states is further reduced by injecting a high surfactant concentration and a low fg in the initial stage...

... ), we presented experimental results pertaining to the efficacy of using a 1% solution of 3-pentanone (a mutual solvent) and separately a 1% non-ionic surfactant solution injected in four unfractured Permian Basin carbonate cores saturated with a low-salinity brine. The experiments indicated that we...

... water saturation distribution across the core sample. Pressure drop analysis during flowback and hydrocarbon production indicates rapid normalization of pressure drop in heterogeneous unconventional formations, contrasting with prolonged normalization in homogeneous formations. These findings underscore...

.... This was further supported by the slope analysis of temporal recovery data as well as analyzing history-matched capillary pressure and relative permeability data. Coreflooding results showed increased oil production rate and reduced residual oil saturation by 3pIB. Relative permeability data, through Lak...

... studied and compared, including remaining oil saturation, injector-producer distance, voidage replacement ratio, and polymer viscosity. The polymer trials, namely E6 and E157 gave breakthrough time within a few months and a few years respectively. Based on our study, it was concluded that the primary...

... reservoir characterization experiment imbibition recovery imbibition experiment structural geology subsurface storage imbibition recovery saturation journal investigation surfactant complex reservoir hydraulic fracturing mudstone co 2 efficiency displacement efficiency petroleum science...

.... The comprehensive field scale sensitivity study indicates an additional oil recovery factor (RF) between 11-18% from LTG injection, influenced primarily by residual oil saturation to waterflood, injection rate, LTG slug size, and surfactant concentration. Gravity segregation between gas and microemulsion phases...

... carbonate rock equation of state modeling & simulation wormhole dissolution fluid dynamics mathematics of computing complex reservoir flow in porous media co 2 ramified wormhole dissolution geology subsurface storage enhanced recovery saturation petroleum science efficiency acid...

... (ANN) model to generate contours of relative permeability in saturation-connectivity space and predict relative permeability for both CO 2 and brine phases as paths are traversed in that space. Experimental data (only one drainage and imbibition curve) is used to tune the ANN model and determine...

... temperature. CO 2 -NB was also compared with a mixture of CO 2 and brine with no NB in high-pressure high-temperature huff-n-puff experiments with live oil-saturated tight Kentucky sandstone cores using three different fracture-matrix configurations. Coreflooding results showed that the displacement of oil...