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Figure S11. A simple schematic of how to absorb acidic compositions of crude oil on carbonate surface.

Figure 11 S11. A simple schematic of how to absorb acidic compositions of crude oil on carbonate surface.

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Figure S1. A graphic illustration of the IFT measurement instruments. Reza Khoramian*, Ahmad Ramazan S. A.°", Mahnaz Hekmatzadeh’, Riyaz Kharrat*, and Elham Asadia a. Department of Petroleum Engineering, Science and Research Branch, Islamic Azad University, Tehran, 14778-93855, Iran. b. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, 14588-89694, Iran. c. IOR Research Institute, Negar Alley, Valiasr Street, Tehran, 19698-13771, Iran. d. Department Petroleum Engineering, Montanuniversitaét Leoben University, 8700, Austria. e. Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran. Reza Khoramian*, Ahmad Ramazani S. A.>", Mahnaz Hekmatzadeh*, Riyaz Kharrat?, and Elham Asadian‘°. Graphene Oxide Nanosheets for Oil Recovery Supporting Information
Figure S1. A graphic illustration of the IFT measurement instruments. Reza Khoramian*, Ahmad Ramazan S. A.°", Mahnaz Hekmatzadeh’, Riyaz Kharrat*, and Elham Asadia a. Department of Petroleum Engineering, Science and Research Branch, Islamic Azad University, Tehran, 14778-93855, Iran. b. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, 14588-89694, Iran. c. IOR Research Institute, Negar Alley, Valiasr Street, Tehran, 19698-13771, Iran. d. Department Petroleum Engineering, Montanuniversitaét Leoben University, 8700, Austria. e. Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran. Reza Khoramian*, Ahmad Ramazani S. A.>", Mahnaz Hekmatzadeh*, Riyaz Kharrat?, and Elham Asadian‘°. Graphene Oxide Nanosheets for Oil Recovery Supporting Information
Figure S2. Showing different parts of the CA measurement system in a simple way
Figure S2. Showing different parts of the CA measurement system in a simple way
Figure S3. Image of the pattern, which was used to make the glassy micro-model.
Figure S3. Image of the pattern, which was used to make the glassy micro-model.
Figure S4. Various schematized parts of the glassy micro-model setup
Figure S4. Various schematized parts of the glassy micro-model setup
Figure S5. Raman spectroscopy of GONs.
Figure S5. Raman spectroscopy of GONs.
Figure S6. FT-IR spectroscopy analysis of GONs Figure S7. A representational picture of GO sheets after dispersing in the aqueous phase.
Figure S6. FT-IR spectroscopy analysis of GONs Figure S7. A representational picture of GO sheets after dispersing in the aqueous phase.
Figure S8. A simplified representation of how Na+ ions influence GONs aggregation.
Figure S8. A simplified representation of how Na+ ions influence GONs aggregation.
Figure S9. pH effect on protonate and deprotonate of GONs —COOH groups.
Figure S9. pH effect on protonate and deprotonate of GONs —COOH groups.
Figure S10. Effect of inertia time on CA for two samples aged in crude oil.
Figure S10. Effect of inertia time on CA for two samples aged in crude oil.
Figure S12a-c. Images of a) an oil-wet sample, b) the sample after spreading some drops of GONs suspension, c) when 1 was dried for 24 hours to make GONs film.
Figure S12a-c. Images of a) an oil-wet sample, b) the sample after spreading some drops of GONs suspension, c) when 1 was dried for 24 hours to make GONs film.
Figure $13. Oil and water distribution throughout brine flooding.
Figure $13. Oil and water distribution throughout brine flooding.
Table S1. The properties of the crude oil Supporting Tables:
Table S1. The properties of the crude oil Supporting Tables:
Figure S15. Macroscopic images of brine flooding.
Figure S15. Macroscopic images of brine flooding.
Table 82. Different concentrations of GONs and NaCl salt which were used in the experiments.
Table 82. Different concentrations of GONs and NaCl salt which were used in the experiments.
Table 83. Some properties of the micro-model used in flooding tests. Table S4. Measured amounts of pH and IFT at a constant concentration of GONs (400 ppm) and various concentrations of NaCl
Table 83. Some properties of the micro-model used in flooding tests. Table S4. Measured amounts of pH and IFT at a constant concentration of GONs (400 ppm) and various concentrations of NaCl
Table S5. pH values of various concentrations of GONs suspension in absence of NaCl.
Table S5. pH values of various concentrations of GONs suspension in absence of NaCl.
Table S6. pH values of 400 ppm of GONs suspension and different values of NaCl.
Table S6. pH values of 400 ppm of GONs suspension and different values of NaCl.
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