... to efficiently displace and produce water and oil retained in reservoirs after an enhanced oil recovery process. Many previous studies about CO 2 injection are related to enhancing oil recovery rather than improving CO 2 storage capacity [5–8] . Orr et al. [5] had a detailed discussion about mechanism of CO...

... Abstract Vapor Extraction (VAPEX) a new developed Heavy Oil Recovery (HOR) method, has been extensively studied, both theoretically and experimentally, in conventional sandstone models. However, the applicability of this process on naturally fractured reservoirs has not been addressed yet...

... Abstract Alkaline flooding is a promising technique for enhancing heavy oil recovery, especially for thin reservoirs where other processes are not practicable. During alkaline flooding, oil recovery is increased by improving sweep efficiency as a result of in-situ formation of water-in-oil (W...

... surfaces. In addition, a validated numerical model based on laboratory data was developed to carry out some sensitivity analysis of different parameters which were difficult to perform on experimental setup. The results confirmed that the ultimate oil recovery of WAS scheme is higher in comparison...

... Abstract The formation and flow of emulsions during alkaline flooding process plays an important role for improving heavy oil recovery. In this study alkaline/surfactant (A/S) flood tests were performed in sandpacks to demonstrate the effectiveness of sweep efficiency improvement...

... Abstract With about 90% of Saskatchewan's original heavy oil in place remaining in the ground, there is excellent potential for the application of enhanced oil recovery (EOR) methods and new technologies. The goal of the study discussed in this paper was to investigate if a new proposed...

... the effect of connate water has been studied. Influence of effective pore geometry parameters on oil recovery and microscopic displacements was investigated during miscible floods. Precise analyses of the high quality pictures, provided continuously during injection process, were used to explore the solvents...

..., and low ultimate oil recovery. Previous studies for achieving the optimum WAG performance are mostly limited to a certain well pattern or a small-scale problem. It is essential to conduct optimal parametric design to optimize the WAG performance for a field-scale problem. In this study, a pragmatic method...

... Abstract Miscible injection of carbon dioxide (CO 2 ) has seen a significant increase in interest for the purpose of enhanced oil recovery in conventional oil reservoirs. However, naturally fractured reservoirs, which are among the largest oil reserves in the world, are considered poor...

... Abstract Due to the favorable effects of CO 2 , such as oil viscosity reduction, oil swelling, and surface tension reduction, CO 2 injection has been established as an effective technique in enhanced oil recovery for light to medium oils. However the utilization of CO 2 for improving...

... Abstract Results of a reservoir condition core flood were matched by a compositional model. Using this model as a base case, the effect of gas composition on oil recovery from an onshore Australian oil field was investigated. Based on this and earlier studies it was found that CO 2 injection...

... Abstract Carbon dioxide (CO 2 ) flooding is an efficacious method of enhanced oil recovery (EOR) that has nowadays become one of the most important EOR processes. It is a very complicated process, involving phase behavior that could increase oil recovery by means of swelling, evaporating...

... Abstract Visual micromodels are a powerful tool for examining the mechanisms of oil recovery from porous media at the pore level. To this end, an algorithm has been developed to create 2- dimensional flow network patterns simulating porous media with controlled properties. This has been used...

... Abstract Immiscible CO 2 injection is a potentially viable method of enhanced oil recovery (EOR) for medium oil reservoirs in southwestern Saskatchewan. The relatively high reservoir pressures could result in a large extent of CO 2 dissolution, significant oil viscosity reduction, and oil...

... chamber to the top occurred much earlier, and a favorable tilt-forward-angle of the thermal front was quickly obtained. TTH steamflooding with solvent proved superior to the TTH steamflooding, as the channeling of steam through the horizontal well was much better controlled, and the oil recovery...

... to the accuracy of fluid property data. Therefore, it is essential to study the effect of the variation in fluid properties such as oil viscosity and oil saturated pressure (or initial GOR) on the prediction of the heavy oil recovery performance from dynamic reservoir simulation. Implementation The approach...

.... Various core flood tests were undertaken to study the effects of CO 2 injection pressure, mobile oil saturation, CO 2 slug size, and oil viscosity on oil recovery by CO 2 flooding. The results indicated that the application of reservoir Characterization Number (CN) technique provided better...

... of economic assumptions. The experiments showed that a hybrid solvent-steam process could recover bitumen at steamoil ratios much lower than those observed for SAGD, and achieve reasonable ultimate oil recovery (60% IOIP). The economic analysis based on experiments indicated that a hybrid solvent-steam...

... and gasifier temperature were investigated. Basically, the conversion to inert gases, principally hydrogen and carbon dioxide, at high pressure, was sufficiently high to make the process technically feasible in depleted light oil reservoirs. Furthermore, the economics of this novel enhanced oil recovery...

... at the early stage of VAPEX process. This is enhanced by the confinement provided by the cylindrical geometry of the core holder. In addition, the further residual oil recovery potential after VAPEX process was investigated by "solvent soaking" method. The oil production performance under different solvent...