水驱油藏含水率及采出程度相似理论研究  

Similarity theory of recovery percent and water cut in water flooding reservoir

作　　者：闫存章[1] 秦积舜[2] 郭文敏[3] 张星[4] 王文环[4] 

机构地区：[1]石油大学石油天然气工程学院,北京102249 [2]中国石油勘探开发研究院,北京100083 [3]胜利油田地质科学研究院,山东东营257000 [4]石油大学石油工程学院,山东东营257061

出　　处：《石油大学学报（自然科学版）》2005年第1期56-61,共6页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：国家重点基础研究项目(G1999022511)

摘　　要：为使模拟实验结果更好地应用到油田,为油田开发方案提供理论指导,应用相似定数法导出了水驱油藏相似准则,经相似变换建立了采出程度和含水率相似准则。利用数值模拟方法对各相似准则进行了敏感性分析,利用相似理论函数论对敏感性较强的相似准则进行了研究。结果表明,水驱油藏采出程度及含水率同各相似准则之间满足乘积关系。根据此关系建立了水驱油藏含水率与采出程度的经验关系式。关系式中引入了相渗经验系数以消除模型与原型相渗差异。物理模拟实验与数值模拟结果的对比表明,所建立的经验关系式可以满足油田实际应用。In order to apply physical simulation results into oilfields properly, equation analysis method was used to get the similarity criterion of water flooding reservoir, and after converting the similarity criterion, the similarity criterions of recovery percent and water cut were gotten. Using numerical simulation, sensitivity analysis was carried out for the similarity criterions. Using the function theory in similarity theory, the similarity criterion of severe sensitivity was studied. The results show that there exists a multiplication relationship among the recovery percent, water cut of water flooding reservoir and the similarity criterions. Based on the relationship, the empirical formulas of water cut and recovery percent were established, in which the relative permeability coefficient was introduced to avoid the difference between the model and prototype. Compared physical simulation with the numerical simulation, it shows that the empirical formulas built can be applied into the actual oilfields.

关 键 词：采出程度 水驱油藏 油田开发 含水率 物理模拟实验 数值模拟方法 敏感性分析 相似准则 函数论 乘积 

分 类 号：TE357[石油与天然气工程—油气田开发工程] TE341