...Competitive gas adsorption isotherms When CO 2 is injected into coal there is a competition of adsorption site between CO 2 and CH 4 , and based on the adsorption capacity the particular gas is adsorbed. IAST in conjunction with Langmuir model has been used in this paper and it is discussed...

... Microscopy (SEM) to study pore blockage, log jamming, and emulsions between NFs and crude oil. enhanced recovery concentration investigation adsorption Upstream Oil & Gas ionic interaction wettability alteration nanoparticle waterflooding emulsion surfactant porous media nanofluid...

... The setup used to conduct the adsorption experiments was constructed based on the volumetric adsorption method. The setup is composed of a reference cell used pressurize the CO 2 to a reference pressure. A sample cell was used to include the pulverized shale sample. A mesh screen was placed...

... resistance. For instance, in calcareous formation, the flow in macro-sized heterogeneity bodies such as thief layers and fractures may not be impacted by permeability perturbation from polymer adsorption on the rock surface ( Townsend and Becker 1977 ). However, others ( N. Mungan, Smith, and Thompson...

..., and hence it helps in improving sweep efficiency. However, one of the critical encounters when using foam in reservoirs is the adsorption of the surfactant on the rock surface. The loss of surfactant to the rock surface will lead to destabilizing the foam and accelerating the collapse rate of foam films...

... by molecular diffusion than lighter components. Furthermore, it is observed that molecular diffusion strongly influences time and location of occurrence of liquid dropout in tight gas condensate reservoirs. Implementation of a rigorous model that includes convection, diffusion, adsorption and phase change...

... Abstract Accurate calculation of adsorbed shale gas content is critical for gas reserve evaluation and development. However, gas adsorption and desorption experiments are expensive and time-consuming, while physics-based models and empirical correlations are unable to accurately capture...

... recovery largely depends on the propagation of the injected polymer solution, which is mainly influenced by adsorption and mechanical entrapment of polymer. An efficient polymer displacement process is usually designed to maintain a stable front. The impact of mechanical entrapment on the front stability...

... and illite, even at low ionic strength and hardness. The polymer inaccessible pore volume was significantly impacted by the presence of clays, but not by the ionic strength and hardness. Analysis of the results indicated that these effects could not be attributed only to polymer adsorption linked...

...Transport description A general transport description of compressible compositional gas flow involving advection, diffusion and adsorption is given by (modified from Chen et al. (2006 )): (1) ∂ t ( ϕ ρ g x i + ( 1 − ϕ ) a i ) = − ∂ x ( ρ...

... enhanced recovery adsorption prediction application Artificial Intelligence concentration oil saturation functional link chemical flooding methods Upstream Oil & Gas project duration Implementation Prediction error reservoir response Injection Rate machine learning neural...

..., the mixture is assumed as a single homogeneous phase, at least in a given area of concentration. The adsorption of several "polymer" components raises a difficult question about the so-called competitive adsorption. There are two opposite answers. In the first one, at the laboratory scale, chemical...

... Researchers have proposed various EOR mechanisms such as disjoining pressure gradient ( Chengara et al., 2004 ; Wasan et al., 2011 and McElfresh et al., 2012 ), IFT reduction, wettability alteration, and plugging of pore throats by adsorption of nanoparticles. Li et al. (2013) performed two...

... during the production of shale gas. A considerable amount of research work has been carried out on stress law of porosity and permeability. However, nearly none of them considered the effects of methane adsorption. This paper utilizes the simplified local-density (SLD) theory to study adsorption...

... by the well bottom hole pressure and how is that linked to adsorption properties? (iv) How are the results when compared to an industry standard simulator, Eclipse? (v) What is the advantage and potential of this model? (vi) Most importantly, is the model realistic? We answer these questions (1...

... #2, the frequency signal should be the same (Δf = 0) for Fluid #1 before and after injection of Fluid #2 ( Figure 1 ). From sections I and III of Figure 2 , it can be observed that relatively large change in the frequency signal (Δf≠0) occurred. Thereby, depicting adsorption of some components from...

.... In case that pseudo components are used in reservoir simulation, the components should have similar retardation characteristics to ensure that incremental recovery is not overestimated. Upstream Oil & Gas chemical flooding methods adsorption viscosity Modeling & Simulation co 3...

... enhanced recovery hydraulic fracturing Fluid Dynamics Simulation membrane surfactant capillary pressure matrix interface molecule microemulsion flow in porous media complex reservoir adsorption d-limonene droplet molecular dynamic simulation penetration solid surface microemulsion droplet...

... μm were submited to laboratory corefloodtests. SMG propagation in reservoirs is driven by a size exclusion mechanism. Microgel size prevents invasion of low permeability zones and creates flow resistance in high permeability zones by adsorption on the rock. The permeability cutoff can be tuned...

.../1,000 gal SA enabled minimum adsorption of the surfactant on both proppant and formation rocks. Notably, the addition of SAs resulted in lower interfacial tension between fluids and enhanced hydrocarbon solubility. As a result, oil recovery was enhanced considerably. Additionally, approximately 70...