.... Surfactants can be used to reinforce the smart waterflooding performance by reducing oil-water interfacial tension (IFT) and enhancing the rock surface wettability alteration. In this research, a comprehensive laboratory study is conducted to investigate the optimum surfactant-assisted smart water formulation...

.... The dielectric (DI) properties were used to evaluate the foam stability across various surfactant (sodium dodecyl sulfate (SDS)) concentrations (0.1 and 0.3 wt.%) in deionized water (DW) and seawater (SW) using Keysight impedance analyzer. The relative permittivity and electrical conductivity profiles...

... Abstract This study aims to assess the foamability and foam stability of synthetic zwitterionic surfactants in a seawater environment, both in the absence and presence of oil. The primary objective is to determine their potential use in enhanced oil recovery (EOR) and CO 2 sequestration within...

... with surfactant (LSS) is a novel EOR approach with great efficiency in lowering oil-water interfacial tension (IFT) and altering the rock surface wettability. In this study, an extensive comparative analysis is held between LSW and LSS on a carbonate rock to evaluate the extent of the improvement achieved via...

... mechanisms. Permeability is found to be a critical factor on the coupled effect. In this study, the spontaneous imbibition oil recovery results from core plugs of different permeability by using two surfactants were compared. The comparison helps understand the impact of permeability on the coupled effect...

... canada government foam stability heavy oil play oil sand concentration upstream oil & gas asia government bitumen chemical flooding methods nanoparticle surfactant container oxide np spe annual technical conference exhibition metallic oxide np enhanced oil recovery experiment...

... Abstract The demand for oil and gas is continuing to rise with a growing population and worldwide industrialization. Surfactants are considered excellent additives for drilling formulations because of their unique properties and chemical structure. The surface-modified nanoparticles...

... and reducing oil–brine interfacial tension (IFT). Also, when used with surface-active agents like surfactant (cationic, anionic or non–ionic) in low–salinity waterflooding (LSWF), NPs can enhance the performance of surfactant. This study focuses on the implications of combining green NPs with surfactant...

... of supercritical CO 2 -foams stabilized by these selected surfactants was then evaluated in Berea sandstone using the CO 2 /surfactant co-injection method. Among the tested surfactants in bulk CO 2 foam experiments at high pressure and temperature conditions, a sultaine-based zwitterionic surfactant...

.... In this study, the effect of different amphoteric and switchable surfactants on bulk foam performance were investigated and later the optimum formulation was evaluated in carbonate porous media for EOR under high salinity and temperature conditions. For this purpose, the solutions containing different...

... Abstract The goal of this work is to develop synergistic surfactant blends that can perform wettability alteration for improved oil recovery (IOR) in tight liquid-rich unconventional shale reservoirs. Shales samples from Eagle Ford and Wolfcamp formation were used in this study. The performance...

...Methyl Orange Method LC-MS Method Development PROE is a surfactant mixture with varying lengths of carbon chains. As a result, eight main components of PROE surfactant were identified using mass spectrometry. The specificity of surfactant detection was improved by flowing through the LC...

... by reducing the contact area of gases with surfactant solution. This further leads to minimize the gas diffusion, and liquid draining tendency, thereby, attaining delayed bubble rupture (coarsening) ( Maestro et al., 2014 ). Due to its higher density, inorganic nanoparticles are usually more difficult...

... Abstract This study designs a novel complex fluid (foam/emulsion) using as main components gas, low-toxicity solvents (green solvents) which may promote oil mobilization, and synergistic foam stabilizers (i.e. nanoparticles and surfactants) to improve sweep efficiency. This nanoparticle-enabled...

... In comparison with the vast literature dedicated to studying polymer and surfactant retention and injectivity depending on the chemical composition, salinity, permeability and temperature, the impact of the clay contents on polymer and surfactant transport has not been widely investigated ( Ahmed...

... the ratio of length to diameter of the droplet was greater than 4. Adsorption of surfactants by reservoir rocks during ASAG flooding may cause losing valuable surfactant (foaming agent) concentration negatively affecting the process efficiency and economics. Thus the ability of the surfactant solutions...

... Table 2 Dielectric constants of bulk crude oil and its SARA fractions used in this study. Crude Oil Saturates Aromatics Resins Asphaltenes ( Punase and Hascakir 2016 ) 2.89 2.42 3.45 4.22 4.90 After characterization of crude oil and crude oil surfactant...

... Abstract A new class of ultra-short hydrophobe surfactants with co-solvent character was investigated as a sole additive to conventional polymer flooding for heavy oil recovery. No alkali was used for emulsification. The surfactants tested are composed of a short hydrophobe (phenol...

... a challenge. This research evaluates the synergistic interaction of one type of nanoparticle and a surfactant to increase foam stability, using the concentration ratio of the two components to tune the affinity of the nanoparticle for the gas/liquid interface. We test the capability of the synergistic two...

... Measuring the surface tension of the selected mixtures of treated polymers solutions with surfactant solutions at varying concentrations. Gas displacement and relative permeability measurements in cores initially saturated with the treated fracturing fluids treated with selected surfactants...