Foam-enhanced oil recovery (EOR) is poised to become one of the most promising tertiary techniques keep up with continuously increasing global energy demands. Due their low sensitivity gravity and permeability heterogeneities that improve sweep efficiency, foams are preferred injection fluids over water or gas. Although foam has been used in field control gas mobility, its success still hindere...

in this paper, a simplified formulation for compositional reservoir simulator is presented. these types of simulators are used when inter-phase mass transfer depends on phase composition as well as pressure. the procedure for solving compositional model equations is completely described. for equilibrium calculation, property estimation peng robinson equation of state is used. this equation was ...

recently, a renewed interest arises in the application of nanotechnology for the upstream petroleum industry. in particular, adding nanoparticles to fluids may drastically benefit enhanced oil recovery and improve well drilling, by changing the properties of the fluid, rocks wettability alteration, advanced drag reduction, strengthening the sand consolidation, reducing the inter-facial tension and...

This paper introduces mathematical models with memory to present the complex rheological phenomena combining the in situ shear rate and bulk rheology with fluid memory. The models are solved numerically and the results compared with established experimental data available in the literature. The new models showed excellent agreement with experimental results for the region where most existing mo...

Core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating CO2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. The core samples were provided from a low permeability mixed wet oil reservoir at 156 °F and 1900 psia. In addition, very few studies of surfactant adsorption on car...

The efficiency of emulsion injection as an enhanced oil recovery (EOR) method is investigated in a synthetic porous medium consisting sintered bi-disperse glass beads, which emulates the porosity and permeability real oil-bearing rocks. Synthetic seawater oil-in-water are successively used to displace mineral initially saturates space. Micro-CT images with 4 ?m resolution acquired at end differ...

Carbon dioxide storage combined with enhanced oil recovery (CCS-EOR) is an important approach for reducing greenhouse gas emissions. We use pore-scale imaging to help understand CO2 and during CCS-EOR at immiscible near-miscible injection conditions. study in situ flooding oil-wet reservoir rock elevated temperature pressure using X-ray micro-tomography. observe the predicted, but hitherto unre...

The in-situ release of fine particles in a porous medium resulting from changes in the colloidal character of fines induced by changes in the electrolytic condition of the permeating fluid and its effects on processes related to enhanced oil recovery (EOR) are examined. Experimental results show that high pH and low salinity cause fines to be released which, in turn, causes a drastic decline in...

To increase the oil recovery factor (RF), enhanced (EOR) methods are applied: chemical, gas, thermal, and combined ones. Standard laboratory research for selecting optimizing EOR technologies require a lot of time resources, as well core material, which is often in short supply. optimize selection reagents field development technologies, use microfluidic technology proposed i.e. conducting expe...

The poor rock quality and matrix permeability several orders of magnitude lower than conventional oil reservoirs observed in unconventional liquid reservoirs (ULR) presents many uncertainties on the storage capacity of the rock and the possibility of enhancing recovery. The technological advances in multiple stage hydraulic fracturing and horizontal drilling have improved the overall profitabil...