含固体颗粒二元复合驱原油乳状液破乳研究

发布时间：2018-06-26 14:12

本文选题：硅藻土 + 原油乳状液　；参考：《油田化学》2017年03期

【摘要】：为了有效处理含固体颗粒的聚合物/表面活性剂二元复合驱原油乳状液油水分离困难的问题,采用界面张力仪和全功能稳定性分析仪考察了硅藻土、破乳剂、部分水解聚丙烯酰胺(HPAM)和石油磺酸盐表面活性剂对胜利海上原油二元复合驱采出液稳定性和油水界面性质的影响。结果表明,非离子破乳剂ECY-05和有机硅破乳剂589按质量比4∶1组成的复配破乳剂FP的破乳效果良好,随着FP加量增大,乳状液稳定性降低,油水界面张力减小,脱水率增加,FP加量为200 mg/L时,含固原油乳状液60 min脱水率为88%;随着HPAM、表面活性剂和硅藻土含量的增加,乳状液稳定性增加,脱水率降低;油水界面张力随着硅藻土加量的增大而增大,随表面活性剂浓度的增大而减小,HPAM对油水界面张力影响较小,三者的协同作用使得脱水率降低。
[Abstract]:In order to effectively deal with the difficulty of separating oil from water in polymer / surfactant binary composite flooding with solid particles, diatomite and demulsifier were investigated by interfacial tension meter and full-function stability analyzer. The effects of partially hydrolyzed polyacrylamide (HPAM) and petroleum sulfonate surfactant on the recovery liquid stability and oil-water interface properties of Shengli crude oil binary composite flooding. The results showed that the demulsifying effect of the compound demulsifier FP composed of non-ionic demulsifier ECY-05 and silicone demulsifier 589 was good according to the mass ratio of 4:1. With the increase of the content of FP, the stability of emulsion decreased and the interfacial tension of oil and water decreased. When the dehydration rate increased, the dehydration rate of the oil emulsion containing Guyuan oil for 60 min was 88 when the dosage of FP was 200mg / L. with the increase of HPAM, surfactant and diatomite content, the stability and dehydration rate of the emulsion increased and the dehydration rate decreased, and the dehydration rate decreased with the increase of the content of HPAM, surfactant and diatomite. The interfacial tension of oil and water increases with the increase of diatomite content and decreases with the increase of surfactant concentration.
【作者单位】：华东理工大学石油加工研究所;中石化股份有限公司胜利油田分公司地质科学研究院;
【基金】：国家“863”科技计划项目“海上油田二元复合驱提高采收率关键技术”(项目编号2008AA092801)
【分类号】：TE357.46

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