Research Article
Influence of Surfactant Structure on the Stability of Water-in-Oil Emulsions under High-Temperature High-Salinity Conditions
Table 1
Description of the surfactants used in this study.
| | Surfactant | Type | Mw (g·mol−1) | HLB | Weight ratio (%) |
| | Glycolic Acid Ethoxylate-1 Ether (C14H24O6) | | 288.34 | 12 | 61.1 | | Glycolic Acid Ethoxylate-2 Ether (CH3(CH2(OCH2 CH2OCH2CO2H ()) | | 739.20 | 7.14 | 35.7 | | Glycolic Acid Ethoxylate-3 Ether (C55H112O8) | | 901.47 | 2 | 9.76 | | Ethylenediamine-Tetrol (C3H6C2H8N2C2H4O | N/A | 3,600 | 7 | 35.7 | | Fluorosurfactant-1 | N/A | N/A | N/A | N/A | | Fluorosurfactant-2 | N/A | N/A | N/A | N/A | | Polyethylene Glycol-1 Ether (C58H109KO24S) | | 1260 | 14 | 69.8 | | Polyethylene Glycol-2 Ether (C18H35(OCH2CH2)nOH, ) | | 356.58 | 4 | 20 | | Polyethylene Glycol-3 Ether (C16H33(OCH2CH2)nOH, ) | | 330 | 5 | 25 | | Polyethylene Glycol-4 (C4H10O2) | | 90,12 | N/A | N/A | | Amine Acetates-1 | | N/A | 6.8 | 34 | | Amine Acetates-2 | | 200 | 10.5 | 52.5 | | Amine Acetates-3 | | 263 | 6.8 | 34 | | Ethoxylated Amides-1 (Ethomid-1) | N/A | N/A | 4.85 | 24.3 | | Ethoxylated Amides-2 (Ethomid-2) | N/A | 340–360 | 5.1 | 25.5 |
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= anionic surfactant; = nonionic surfactant; = ionic surfactant; Mw = molecular weight; N/A = data not available.
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