摘要
海拉尔盆地贝301区块南屯组储层岩石类型多样化,以砂岩、砂砾岩为主,且砂砾岩储层非均质性强、渗透率变化大,通过常规的数理统计解释模型计算的渗透率精度低。在划分岩性的基础上,利用岩石物理微观孔隙结构对内部差异相对较大的砂砾岩储层进一步分类,分别建立渗透率模型。该方法经检查井实际资料处理验证,计算渗透率平均相对误差从分类前的180.6%降低到分类后的48.2%,精度明显提高,效果较好。
The reservoir of Nantun Formation in Block Bei 301 of Hailar Basin had various reservoir rock types,which were mainly sandstone and glutenite,and glutenite reservoirs were strong heterogeneity and big permeability changes,the calculated permeability was low precision that was obtained by conventional interpretation model of mathematical statistics.On the basis of distinguishing the lithology,it was further classified for the glutenite reservoirs with different internal microscopic pore structures by using petrophysical method to establish a permeability model respectively.The method is verified in actual data processing of inspection wells,the average relative error of the calculated permeability is reduced from the 180.6%to 48.2% after classification,the precision is improved obviously,the effect is good.
出处
《长江大学学报（自科版）（中旬）》
2016年第12期42-46,52,共6页
Journal of Yangtze University(Nature Science Edition)
基金
国家重点基础研究发展计划("973"计划)项目(2009CB219300)
关键词
渗透率
储层分类
砂砾岩
岩石物理相
permeability
reservoir classification
glutenite
petrophysical facies
