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第36卷第2期 北京科技大学学报 Vol.36 No.2 2014年2月 Journal of University of Science and Technology Beijing Feb.2014 考虑固液分子作用的多孔介质动态网络模型 王小锋)区,朱维耀”,邓庆军),刘启鹏”,隋新光》,娄钰”,高英”, 张雪龄) 1)北京科技大学土木与环境工程学院,北京1000832)东北石油大学,大庆163000 3)大庆油田第一采油厂,大庆163000 ☒通信作者,Emai:bkwxiaofeng@163.com 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 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TE312:0359 Dynamic network model considering solid-iquid molecule interaction in porous media WANG Xiao feng",ZHU Wei-yao",DENG Qing jun?,LIU Qi-peng",SUI Xin-guang,LOU Yu,GAO Ying", ZHANG Xue-ing” 1)Civil &Environment Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Northeast Petroleum University,Daqing 163000,China 3)The First Oil Production Plant,Daqing Oilfield,Daqing 163000,China Corresponding author,E-mail:bkwxiaofeng@163.com ABSTRACT 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. KEY WORDS oil field development;porous media:porous flow;molecular force:pore pressure:mathematical models 多孔介质储集层孔隙结构复杂极不规则,流体 和规律.在国外,1956年Fat0最早提出了网络模 在储层内的流动规律很难用几个参数来描述.为了 型的概念,并利用网络模型研究了多孔介质中流体 探知流体在多孔介质内的微观流动机理,研究人员 的动、静态性质:Dullien等p)使网络模型与逾渗理 把多孔介质的孔喉结构抽象为具有理想形状的几何 论相结合,研究了流体在孔隙空间内的窜通规则 空间,建立孔隙网络模型模拟多孔介质的流动过程 国内外有很多学者-国利用网络模型研究润湿性对 收稿日期:201308-22 基金项目:国家重大基金资助项目(50934003,11372033):教育部专项资助项目(FRF-MP-B12006B) DOI:10.13374/j.issn1001-053x.2014.02.002:http://journals.ustb.edu.cn第 36 卷 第 2 期 2014 年 2 月 北京科技大学学报 Journal of University of Science and Technology Beijing Vol. 36 No. 2 Feb. 2014 考虑固液分子作用的多孔介质动态网络模型 王小锋1) ,朱维耀1) ,邓庆军2) ,刘启鹏1) ,隋新光3) ,娄 钰1) ,高 英1) , 张雪龄1) 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  通信作者,E-mail: bkwxiaofeng@ 163. com 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. 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 TE 312; O 359 Dynamic network model considering solid-liquid molecule interaction in porous media WANG Xiao-feng1)  , ZHU Wei-yao1) , DENG Qing-jun2) , LIU Qi-peng1) , SUI Xin-guang3) , LOU Yu1) , GAO Ying1) , ZHANG Xue-ling1) 1) Civil &Environment Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2) Northeast Petroleum University,Daqing 163000,China 3) The First Oil Production Plant,Daqing Oilfield,Daqing 163000,China  Corresponding author,E-mail: bkwxiaofeng@ 163. com ABSTRACT 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. KEY WORDS oil field development; porous media; porous flow; molecular force; pore pressure; mathematical models 收稿日期: 2013--08--22 基金项目: 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) DOI: 10. 13374 /j. issn1001--053x. 2014. 02. 002; http: / /journals. ustb. edu. cn 多孔介质储集层孔隙结构复杂极不规则,流体 在储层内的流动规律很难用几个参数来描述. 为了 探知流体在多孔介质内的微观流动机理,研究人员 把多孔介质的孔喉结构抽象为具有理想形状的几何 空间,建立孔隙网络模型模拟多孔介质的流动过程 和规律. 在国外,1956 年 Fatt[1]最早提出了网络模 型的概念,并利用网络模型研究了多孔介质中流体 的动、静态性质; Dullien 等[2--3]使网络模型与逾渗理 论相结合,研究了流体在孔隙空间内的窜通规则. 国内外有很多学者[4--13]利用网络模型研究润湿性对
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