摘要
为开发非均质程度严重的油田,建立了描述碱/表面活性剂/聚合物+泡沫复合驱油过程的数学模型。该模型在研究泡沫复合驱油机理的基础上,能够模拟泡沫复合驱具有的界面张力、毛管驱油、化学剂复合协同效应、流度控制、泡沫效应等主要的驱油机理以及所发生的对流、弥散、扩散、吸附、相态变化、水相化学反应、石油酸与碱反应等一系列物化现象,拟合了实际泡沫复合驱岩心驱油模型驱替过程。拟合结果与岩心驱油实验结果基本吻合。利用该模型可以通过数值模拟方法辅助,进行泡沫复合驱的机理研究、实际应用可行性研究、矿场方案优选和开发效果预测。
A numerical simulator was developed to study enhanced oil recovery mechanisms for combined alkali/surfactant/polymer and foam (ASP+Foam) flooding. The model considered displacement mechanisms such as interfacial tension, capillary desaturation, chemical synergetic effects, mobility control, and foam behavior. The model incorporates physicochemical phenomena such as dispersion, diffusion, adsorption, relative permeability, phase behavior, aqueous reactions, and insitu generation of surfactant from acidic crude oil. The simulation results match laboratory performance very well for 2D core ASP+foam displacements. Therefore, the simulator can be used for mechanism studies, feasibility evaluations, pilot plan optimizations and performance predictions for the combined ASP+foam flooding process.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第12期1621-1623,1643,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"九五"重点科技攻关项目(96-121-05)
