نوع مقاله : مقاله پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
Interfacial tension (IFT) is one of the most serious obstacles on the way to the exit and production of oil from the reservoir pores, causing a large amount of oil to be kept as residual (trapped) in these pores. It also leads to a significant reduction in the microscopic displacement efficiency and, subsequently, a considerable decline in the oil recovery factor from the reservoir. One of the most recent methods is to use Pickering emulsions to reduce the IFT and produce residual oil from the reservoir pores. Accordingly, this research aimed to prepare a Pickering emulsion by combining the novel GO-SiO2-TiO2 nanocomposite at its most effective concentration with the SDS surfactant at a critical micelle concentration (CMC) for the first time, which can significantly increase the oil recovery factor from the reservoir through a significant decrease in IFT. The GO-SiO2-TiO2 nanocomposite was synthesized for this purpose. In addition, the synthesis of the mentioned nanocomposite was confirmed using FESEM, EDXS, Map, FTIR, XRD, and TGA analyses, and its properties underwent investigation. The 500-ppm concentration of the SDS surfactant and the 2500-ppm concentration of the GO-SiO2-TiO2 nanocomposite (with IFT values of 2.48 mN/m and 1.11 mN/m, respectively) were then selected as the CMC of the surfactant and the most effective concentration of the nanocomposite, respectively. Next, the GO-SiO2-TiO2-SDS Pickering emulsion was prepared based on the mentioned concentrations, and the IFT value between this emulsion and kerosene was measured at 0.21 mN/m. This finding indicated a significant reduction in the IFT due to using the GO-SiO2-TiO2–SDS Pickering emulsion. Therefore, using the mentioned Pickering emulsion can significantly increase the production of residual oil from the reservoir pores and enhance the oil recovery factor from the reservoir by reducing the IFT substantially.
کلیدواژهها English