... Abstract Well productivity often declines due to multiple reasons which include skin effect near well-bore area, heavy deposition in tubing, change in wettability etc. This paper presents a methodology to identify the optimal surfactant-solvent composition, followed by field deployment along...

... Abstract Surfactant flooding is a well-established technique for enhanced oil recovery. Many studies have been carried out on a core scale to examine the mechanisms of surfactant flooding. This study presents a new approach employing microfluidics technology to visually analyze the performance...

... Abstract Global trends show a growing need to reduce environmental impacts while maintaining high performance. As a result, the oil and gas industry is witnessing the rise of innovative, greener solutions to meet this critical need. Surfactants are of multiple industrial importance...

... and materials silicate obdf composition mc-tone applied clay science enhancement high-temperature condition rheological property surfactant petroleum science and engineering Introduction Drilling fluids are indispensable in oil and gas well drilling. These specialized fluids perform...

... of spontaneous imbibition constitutes the focus of this work. In this study, two selected surfactants, SS885 and GS2, had opposite strengths and weaknesses in the two mechanisms, as was confirmed with spinning drop and pendant drop IFT measurements and static contact angle measurements. Four Indiana limestone...

... Abstract Chemical imbibition technology is an effective way to enhance oil production for fractured carbonate reservoirs. Surfactants have been reported frequently in the literature to enhance imbibition process, while the combination of ionic liquid and surfactants is less investigated...

... Abstract Amphiphilic molybdenum disulfide (AMD) nanosheet is a novel flake type nanomaterial with unique behaviors on oil/water interfaces compared with particulate nanomaterials for increasing oil production. Surfactant additives are the key enabler for the nanosheet injection to solve...

... Abstract Surfactant flooding is a well-known chemical enhanced oil recovery (cEOR) technique. However, surfactant surface chemistry and the associated interactions with rock surfaces are complex and have not been fully investigated. Here, we experimentally investigate the surface chemistry...

... gemini surfactants have been shown effective in altering rock wettability from oil-wet to water-wet conditions. To study the impact of spacer structure on organic acids desorption, experiments were taken to show the impact of the water film in the oil-wetting process of rock by organic acids...

... foaming agent is an amphoteric surfactant, whereas the hydrocarbon based foaming agent is a fluoro-polymeric surfactant. The test fluid was prepared by mixing foaming agent with synthetically prepared formation water and a condensate sample separately. The foamability of surfactants was assessed by using...

... Abstract Our study investigates recent advancements in modeling surfactant-polymer processes using both commercial and open-source simulators, focusing specifically on UTCHEM, CMG-STARS, and the coupled MRST-IPhreeqc due to their widespread global use. The main objective is to examine...

... Abstract In this work, four linear alkyl ether carboxylates (AECs) C 11 E 5 A, C 11 E 11 A, C 12 E 4 A, and C 12 E 7 A were examined as agents for surfactant EOR. Their main properties that have a key effect on surfactants' performance during flooding were investigated: stability, interfacial...

..., and natural core scale work under reservoir conditions resulted in a total recovery of 66.92%, with an incremental recovery of 25.25% by N 2 foam after water flooding. The pilot was deployed using a new injection strategy of a surfactant alternating gas method in which surfactant was injected into water...

... Abstract Surfactants are widely employed in chemical enhanced oil recovery (cEOR) technique. The economics of a cEOR project is directly impacted by the amount of surfactant loss caused by adsorption on a rock. Therefore, surfactant adsorption reduction is imperative. Both static and dynamic...

... Abstract The development of unconventional resources such as shales has gained great popularity in the past decade. The objective of this study is to investigate the effect of surfactants on the wettability of shale rocks. In particular, we examine the influence of different concentrations...

... of novel zwitterionic surfactants (ZS) and Gemini surfactants (GS) for oil-wet carbonate rock. A chelating agent was added to alter the properties of the surfactants to get comparable WA performance but different IFT. The surfactants used in this study were a zwitterionic surfactant Erucamidopropyl...

... caused by water blockage may mainly come from mesopores and micropores. Our study reveals a deeper mechanism of removing water blockage during the IFT reduction process, which can guide the application of surfactants in the oil field. upstream oil & gas saturation fluid dynamics complex...

... beads and fiber. Chemical diverter is mostly used as temporary barrier of fluid during treatments, and will get converted back afterwards by chemical means. Chemical diverter can be divided into two main types: polymer-based diverter and surfactant-based diverter. In the past decade, biodegradable...

...) applications, particularly surfactants, in improving recovery under these HTHS conditions are challenging. Developing suitable surfactants that withstand these conditions can improve water imbibition into the low permeability rock matrix, alter the rock wettability, and significantly lower the interfacial...

... security. Injection of foam has been proposed as an effective solution to this problem from decades. Foams have low mobility and prevent the formation of high mobility channels. Surfactant is a crucial component in generating stable aqueous foam. The selection of surfactants as foaming agents is very...