严重层间非均质油藏水驱效果及影响因素研究  

Study on water displacing oil effect and its factors in serious interlayer heterogeneity character reservoir

作　　者：莫建武[1,2] 孙卫[1] 杨希濮 韩宗元[4] 胡明姣[2] 

机构地区：[1]西北大学大陆动力学国家重点实验室/地质学系,陕西西安710069 [2]中原油田分公司勘探开发科学研究院,河南濮阳457001 [3]中海油研究总院,北京100027 [4]中国石化胜利石油管理局石油开发中心,山东东营257000

出　　处：《西北大学学报（自然科学版）》2011年第1期113-118,共6页Journal of Northwest University（Natural Science Edition）

基　　金：国家重点基础研究发展规划基金资助项目(2003CB214606);国家科技支撑基金资助项目(2007BAB17B00)

摘　　要：目的研究层间严重非均质条件下各类储层的水驱条件及效果。方法通过岩心多层水驱油室内实验,研究多层组合下,不同渗透率层的水驱效果(包括水驱动用、产量贡献及采出程度等)及其主要影响因素;应用数学统计方法,建立综合影响因子代表各个影响因素,并分析水驱效果与综合影响因子之间的关系。结果合理的驱替压差是合注合采储层动用的关键;渗透率级差是影响多层合注合采开发效果最主要的因素,其次为组合层数和平均渗透率;多层水驱油组合情况下,低渗层若要达到较好的水驱效果,其多层组合渗透率级差应小于8,多层组合综合影响因子要小于6。结论严重层间非均质油藏注水开必须保持合理的驱动压差,其注采层系划分应综合考虑组合层数、平均渗透率及渗透率级差等因素的共同影响。Aim To study the water flooding and the factors of serious interlayer heterogeneity character reservoirs.Methods Analyzing the effect of water flooding and its main factors in co-injection and combined oil reservoir based on the data of Multi-layer Water-flooding experiment.Combined influence factor on behalf of the main factors are established by mathematics statistical methods.Results A reasonable displacement pressure is the key to using co-injection and combined oil reservoir.Permeability contrast is the most important factor in the development of multi-layer co-injection and combined reservoir,and followed by the combined layers and average penetration rate.The permeability contrast should be less than 8,and the combined influence factor should be less than 6 under the condition of multi-layer water flooding.Conclusion The displacement pressure should be kept at a reasonable level and the injection-layer system should be divided according to the combined effect of the combined layers,the average penetration rate and permeability contrast in serious interlayer heterogeneity character reservoirs.

关 键 词：层间非均质性 多层水驱油实验 驱替效果 渗透率级差 胡七南断块 

分 类 号：TE341[石油与天然气工程—油气田开发工程]