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通过对胜利馏分油的磺化制得一种石油磺酸盐(PS),并对其与不同碳链脂肪醇醚磺酸盐(AnESO,EO=3,n=1214,16,18)复配体系的耐盐(NaCl、CaCl2)性能和界面性能进行了研究。结果表明:(1)PS耐盐性能较差,当NaCl质量浓度达到30 g/L或CaCl2质量浓度达到0.15 g/L时,即有沉淀生成,且与胜利原油间的界面张力值较高(≥10-1 mN/m)。(2)将PS和AnESO以m(PS)∶m(AnESO)=9∶1复配,复配体系的耐盐性能均明显提高。其中PS/A18ESO复配性能最好,复配体系NaCl质量浓度能达到80 g/L,CaCl2质量浓度则达到2.4 g/L;而且界面张力在一定NaCl和CaCl2含量下可以降至10-2 mN/m数量级。
A petroleum sulfonate (PS) was obtained by sulfonation of Victory distillate and compounded with different carbon chain fatty alcohol ether sulfonates (AnESO, EO = 3, n = 1214, 16, 18) The salt tolerance (NaCl, CaCl2) properties and interface properties of the system were studied. The results showed that: (1) PS had poor salt tolerance. When NaCl concentration reached 30 g / L or CaCl2 concentration reached 0.15 g / L, precipitation was formed and the interfacial tension with Shengli Crude oil was high ≥10-1 mN / m). (2) The PS and AnESO with m (PS): m (AnESO) = 9: 1 complex, the salt system performance were significantly improved. Among them, PS / A18ESO had the best compounding performance, the concentration of NaCl in the complex system reached 80 g / L and the concentration of CaCl2 reached 2.4 g / L, and the interfacial tension could be reduced to 10-2 mN under certain NaCl and CaCl2 contents / m order of magnitude.