基于HLB值对特超稠油高分子乳化体系的降黏效果研究

Viscosity Reduction Effect of Polymer Emulsifier System on Extra and Super Heavy Oil Based on HLB Value

何延龙 蒲春生 谷潇雨 崔淑霞 居迎军

HE Yanlong PU Chunsheng GU Xiaoyu CUI Shuxia JU Yingjun

针对特超稠油开采难度大，乳化降黏过程困难的问题，合成了具有自乳化性能的嵌段高分子结构表面活性剂DBPS，其临界胶束浓度为2.71×10-6 mol/L，亲水亲油平衡值HLB为15.2。通过分光光度法测得河南特稠油、滨南超稠油的最大吸收波长分别为335 和340 nm，最佳乳化HLB值分别为9.2 和6.0。在特超稠油所对应的HLB值下，Span-80 与DBPS形成的乳化体系（SD体系）对特超稠油的乳化降黏效果优于Span-80 与Tween-80 形成的乳化体系（ST体系）。当SD体系的HLB值与特超稠油的HLB值接近时，可以获得理想的乳化降黏效果，对河南特稠油和滨南超稠油的乳化降黏率分别可达97.71%和96.04%。图10 表1 参12

Aimed at the difficulty of heavy oil development and the process of viscosity reduction by emulsification，the polymer nonionic block polyurethane surfactant（DBPS）was synthesized. The critical micelle concentration of DBPS was 2.71×10-6 mol/L， corresponding to the HLB value of 15.2. The sample of extra and super heavy oil was collected from Henan and Binnan oilfield respectively. Through UV spectrophotometry detection，the maximum absorption wave length of Henan extra heavy oil and Binnan super heavy oil was 335 and 340 nm，and the optimum HLB value of that was 9.2 and 6.0. Under the optimum HLB value，the emulsification viscosity reduction effect of Span-80/DBPS（SD system）was better than that of Span-80/Tween-80（ST system）. When the HLB value of SD system and extra or super heavy oil approached，the emulsification viscosity reduction rate of Henan oil and Binnan oil was 97.71% and 96.04% respectively.