考虑固液分子作用的多孔介质动态网络模型  

Dynamic network model considering solid-liquid molecule interaction in porous media

作　　者：王小锋[1] 朱维耀[1] 邓庆军[2] 刘启鹏[1] 隋新光 娄钰[1] 高英[1] 张雪龄[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]东北石油大学,大庆163000 [3]大庆油田第一采油厂,大庆163000

出　　处：《北京科技大学学报》2014年第2期145-152,共8页Journal of University of Science and Technology Beijing

基　　金：国家重大基金资助项目(50934003;11372033);教育部专项资助项目(FRF-MP-B 12006B)!

摘　　要：根据质量守恒定律,从固液分子力作用出发,结合岩心的孔喉分布特征,建立考虑固壁与流体分子作用的动态网络模型.利用模型模拟得到不同时间步的孔隙压力变化,分析了固液分子间力、喉道半径、润湿性等因素对剩余油饱和度分布和水驱相渗曲线的影响.研究结果表明,考虑固液分子间力作用时剩余油饱和度增大,岩石骨架与流体间的分子作用在多孔介质的孔隙流动中不可忽略.According to the mass conservation law, a dynamic network model which considers interaction between solid walls and liquid molecules was established. This model is on the basis of solid-liquid intermolecular force and in combination with the distribution characteristics of pore throats in porous media. The change in pore pressure at different time steps was simulated through the model. The influences of solid-liquid intermolecular force, pore throat radius and wettability on the saturation distribution of remaining oil and the permeability curve of water flooding phase were analyzed. The results show that when considering solid-liquid intermolecular force the saturation of residual oil increases, thus interaction between rock and fluid molecules cannot be ignored in the study of porous flow in porous media.

关 键 词：油田开发 多孔介质 渗流 分子间力 孔压 数学模型 

分 类 号：TE312[石油与天然气工程—油气田开发工程] O359[理学—流体力学]