Thermosensitive core-shell fe3o4@poly(n-isopropylacrylamide) nanogels for enhanced oil recovery

Khalil, Munawar and Fahmi, Alwy and Nizardo, Noverra Mardhatillah and Amir, Zulhelmi and Jan, Badrul Mohamed (2021) Thermosensitive core-shell fe3o4@poly(n-isopropylacrylamide) nanogels for enhanced oil recovery. Langmuir, 37 (29). pp. 8855-8865. ISSN 0743-7463, DOI

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An investigation on the application of thermosensitive core-shell Fe3O4@PNIPAM nanogels in enhanced oil recovery was successfully performed. Here, the unique core-shell architecture was fabricated by conducting the polymerization at the surface of 3-butenoic acid-functionalized Fe3O4 nanoparticles and characterized using X-ray diffraction (XRD), H-1 NMR, vibration sample magnetometer (VSM), and high-resolution transmission electron microscopy (HR-TEM). According to the results, this core-shell structure was beneficial for achieving the desired high viscosity and low nanofluid mobility ratio at high temperatures, which is essential for enhanced oil recovery (EOR) application. The results demonstrated that the nanogels exhibited a unique temperature-dependent flow behavior due to the PNIPAM shell's ability to transform from a hydrated to a dehydrated state above its low critical solution temperature (LCST). At such conditions, the nanogels exhibited a significantly low mobility ratio (M = 0.86), resulting in an even displacement front during EOR and leads to higher oil production. Based on the result obtained from sand pack flooding, about 25.75% of an additional secondary oil recovery could be produced when the nanofluid was injected at a temperature of 45 degrees C. However, a further increase in the flooding temperature could result in a slight reduction in oil recovery due to the precipitation of some of the severely aggregated nanogels at high temperatures.

Item Type: Article
Funders: Indonesian Ministry of Research and Technology/National Research and Innovation Agency through Hibah Penelitian Dasar Unggulan Dasar Perguruan Tinggi (PDUPT) 2021 [NKB-177/UN2.RST/HKP.05.00/2021]
Uncontrolled Keywords: Wettability alteration; heavy oil; Interfacial-tension; Nanoparticles
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 25 Jul 2022 04:25
Last Modified: 25 Jul 2022 04:25

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