低渗透油藏单相及两相非线性渗流新模型  

New model of single-phase and two-phase nonlinear flow in low permeability reservoirs

作　　者：杨仁锋[1,2] 姜瑞忠[2] 刘世华[3] 

机构地区：[1]中海油研究总院,北京100027 [2]中国石油大学,山东东营257061 [3]中国石化石油工程技术研究院,北京100101

出　　处：《辽宁工程技术大学学报（自然科学版）》2011年第A01期60-65,共6页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重大科技专项基金资助项目(2008ZX05013-002)

摘　　要：针对目前并没有一个有理论基础的低渗透油藏非线性渗流模型,同时两相非线性渗流理论研究存在误区问题,结合边界层理论,利用毛管模型推导出了一个低速非线性渗流模型,通过实验数据验证发现该模型能够很好的反映出低渗透油藏的实际渗流特征。结合达西定律推广到两相的过程,深入的分析了相对渗透率引入的基本假设以及相对渗透率曲线所反映出的信息,将建立的单相非线性渗流新模型推广到两相体系,得到了两相非线性渗流新模型,并指出了现在两相非线性渗流理论研究方面存在的不足,并指出现有的非达西渗流模型相关的非达西参数应该取单相时测量值。In view of the lack of a nonlinear flow model with theoretical foundation for low permeability reservoirs and misunderstanding for two-phase nonlinear flow theory, a new low-speed nonlinear flow model is derived based on boundary layer theory and capillary model in this paper. Experiment data demonstrate that the model can reflect the actual flow characteristics of the low permeability reservoir. According to the process of Darcy＇s law extended to the two-phase, the basic assumptions of relative permeability and the information that relative permeability curve reflects were deeply analyzed. Then the new single-phase non-linear flow model was extended to two-phase system, hence the new model of two-phase nonlinear flow was obtained; meanwhile, the shortcomings of the present study on two-phase theory of nonlinear flow were pointed out. And present non-Darcy flow model parameters should be obtained from the single-phase flow experiment values.

关 键 词：低渗透 非线性渗流 渠道流 相对渗透率 毛管模型 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]