多重光散射法研究弱碱三元驱油剂对乳状液稳定性的影响
Effect of Weak Base ASP Flooding Agent on Emulsion Stability by Multiple Light Scattering Method
DOI: 10.12677/hjcet.2025.155023, PDF,    科研立项经费支持
作者: 常苏德, 仝泽乐, 侯宇涵, 黄 金*：大庆师范学院黑龙江省油田应用化学与技术重点实验室，黑龙江 大庆；徐春玲：中国石油大庆油田有限责任公司勘探开发研究院，黑龙江 大庆；许 雪：连云港嘉澳新能源有限公司，江苏 连云港
关键词: 多重光散射法；乳状液；石油磺酸盐；部分水解聚丙烯酰胺；Multiple Light Scattering Method； Emulsion； Petroleum Sulfonate； Partially Hydrolyzed Polyacrylamide
摘要: 化学驱是目前油田保持稳产的重要提高采收率技术，化学驱的驱油剂是乳状液稳定的重要因素。本研究采用多重光散射法系统研究了弱碱三元驱油剂(部分水解聚丙烯酰胺(HPAM)、石油磺酸盐和碳酸钠(Na2CO3))对乳状液稳定性的影响。以乳状液的水相透射光强平均值(Tavg)和油相背散射光强平均值(BSavg)为参数分析了驱油剂对乳化液稳定性的影响规律。结果表明，提高HPAM浓度可显著增加溶液粘度，减缓乳化液滴的聚集和聚并，从而增强乳状液稳定性；增加石油磺酸盐浓度能显著降低油水界面张力，提高界面剪切粘度和弹性，进一步稳定乳化液滴；而碳酸钠浓度的增加对乳状液稳定性的影响较为复杂，当Na2CO3浓度≤1.00%时，提高Na2CO3浓度乳状液的稳定性减弱；当Na2CO3浓度为1.20%时，油相乳化液滴的稳定性增强，其作用与水相离子强度和界面张力变化密切相关。
Abstract: Chemical flooding is an important enhanced oil recovery technology for maintaining stable production in oil fields. The oil displacement agents employed in chemical flooding play an important role in emulsion stability. This study systematically investigated the effects of weak base ASP flooding agents-partially hydrolyzed polyacrylamide (HPAM), petroleum sulfonate and sodium carbonate (Na2CO3)-on emulsion stability using multiple light scattering analysis. The analysis employed two key parameters: average transmitted light intensity of the aqueous phase (Tavg) and average back- scattered light intensity of the oil phase (BSavg). Experimental results demonstrate that increasing HPAM concentration significantly elevates solution viscosity, retards droplet aggregation and coalescence, thereby improving emulsion stability. Elevated petroleum sulfonate concentrations substantially reduce oil-water interfacial tension while enhancing interfacial shear viscosity and elasticity, effectively stabilizing emulsified droplets. The influence of increasing sodium carbonate concentration exhibits greater complexity: at concentrations below 1.00 wt% Na2CO3, emulsion stability decreases with increasing concentration, whereas at 1.20 wt% concentration, oil phase droplet stability improves significantly, attributed to altered ionic strength and interfacial tension variations in the aqueous phase.
文章引用：常苏德, 徐春玲, 许雪, 仝泽乐, 侯宇涵, 黄金. 多重光散射法研究弱碱三元驱油剂对乳状液稳定性的影响[J]. 化学工程与技术, 2025, 15(5): 237-245. https://doi.org/10.12677/hjcet.2025.155023

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