A novel microfluidic approach to measure interfacial tension of immiscible fluids rapidly is reported. This method rests upon quantitative force balance analysis of drop formation dynamics in a coaxial microfluidic device. The values of interfacial tension for several two liquids without/with surfactants are measured. These measurements compare well with those measured by the commercial interfa...

Aqueous solutions of alcohols are interesting because of their anomalous behavior that is believed to be due to the molecular structuring of water and alcohol around each other in solution. The interfacial structuring and properties are significant for application in alcohol purification processes and biomolecular structure. Here we study aqueous mixtures of short alcohols (methanol, ethanol, 1...

Surfactant flooding can mobilize trapped oil and change the wettability of rock to be more hydrophilic, which increases recovery factor. However, selection surfactants is difficult in case high salinity conditions. In this work, we synthesized three novel anionic-nonionic based on widely used nonionic surfactant nonylphenol polyethoxylated (NPEO) evaluated their efficiencies for enhanced (EOR) ...

Surfactant alternating gas/CO 2 (SAG) flooding is a promising enhanced oil recovery (EOR) technology, which has the potential to improve production beyond primary and secondary water methods. However, performance of SAG restricted due instability under high salinity reservoir conditions excessive surfactant adsorption. One convenient relatively low-cost option overcome limitations use low (LSW)...

by considering the fact that the surface tension of a real fluid arises from a combination of both repulsive and attractive forces between molecules, a new expression for the interfacial tension has been derived from scaled particle theory (spt)  based on the work of cavity formation and the interaction energy between molecules. at the critical temperature, the interfacial tension between coexi...

Alkaline/surfactant/polymer (ASP) flooding has been extensively applied to enhancing oil recovery. As an oil displacement agent, pe1troleum sulfonate (PS) is widely used in ASP pilot experiments. It is very important to find a petroleum sulfonate with a high interfacial activity and low adsorption loss. Anionic surfactant petroleum sulfonate is synthesized in a single-tube film sulfonation reac...

Penelitian yang dilakukan adalah injeksi surfaktan, dimana surfaktan di pilih AOS menggunakan konsentrasi rendah untuk menaikan produksi minyak. Penggunaan tersebut bertujuan menurunkan interfacial tension atau tegangan antarmuka pada dua fluida, yaitu minyak serta air, sehingga dapan keluar dari pori-pori batuan reservoir. Pada penelitian ini digunakan salinitas sebesar 5000 ppm, dan 20000 ppm...

Produced water, also known as oily wastewater, is one of the major wastes in oil and gas industry. During hydrocarbon production, formation emulsion takes place such oil-in-water which has a huge financial effect on sector. Oil industry seeks highly effective reasonable demulsifying chemicals to separate emulsions into water crude oil. Thus, this publication, resin alkoxylate, cationic polyamin...

Nonionic–anionic surfactants are expected to be applied in chemical flooding due their important properties such as ultralow IFT values, good salt tolerance, and no chromatographic separation porous media. In this study, a new type of nonionic–anionic–hydrophobic group structure surfactant N, N-dihydroxyethylalkylamide carboxylate (EAMC) was synthesized. The synergistic effects between petroleu...