Research Article
Numerical Simulation and Optimization of Enhanced Oil Recovery by the In Situ Generated CO2 Huff-n-Puff Process with Compound Surfactant
Table 1
Source and purity of the reagents used.
| | Compounds | CAS number | Source | Molar mass (g/mol) | Purity (mass fraction) |
| | N2 | 7727-37-9 | Chengdu Dongfang Electric Gas Co., Ltd. | 28.013 | 0.9999 | | NaHCO3 | 144-55-8 | Sinopharm Chemical Reagent Co., Ltd. | 84.01 | 0.999 | | Na2CO3 | 497-19-8 | Sinopharm Chemical Reagent Co., Ltd. | 105.99 | 0.999 | | CH3COOH | 64-19-7 | Sinopharm Chemical Reagent Co., Ltd. | 60.05 | 0.99 | | HCl | 7647-01-0 | Sinopharm Chemical Reagent Co., Ltd. | 36.46 | 37.0 | | C12H25NaO3S | 2386-53-0 | Chengdu Kelong Chemical Reagent Co., Ltd. | 272.38 | 0.99 | | C18H29NaO3S | 25155-30-0 | Chengdu Kelong Chemical Reagent Co., Ltd. | 348.48 | 0.99 |
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