流动单元划分及其对单井产能的控制——以西峰油田董志区长8油层组为例

Division of flow units and its control on single well productivity——A case study with Chang 8 reservoir in Dongzhi area of Xifeng Oilfield

在沉积微相、储层综合定量分析基础上,选取有效厚度、孔隙度、渗透率、流动带指数4个参数,应用聚类分析法对鄂尔多斯盆地西峰油田董志区长8油层组进行流动单元划分,将研究区目的层划分为E、G、M、P4类流动单元。通过研究发现,各类流动单元与储层岩性、物性、沉积微相和产能具有很好的对应关系,同时提出了提高各类流动单元单井产能的有效措施,对该类油田的高效开发具有一定指导意义。

The flow units of Chang 8 reservoir in Dongzhi area of Xi' feng Oilfield,Ordos Basin,are divided by using cluster analysis of effective thickness,porosity,permeability and flow - zone index on the basis of sedimen- tary microfacies and integrated and quantitative analysis of the reservoir.The target in the study area has been di- vided into 4 types of flow units,including E,G,M and P.The study shows that all the flow units correspond well with reservoir lithology,property,sedimentary microfacies and deliverability.Meanwhile,stimulation meth- ods for improving single well production in various flow units are presented for guiding efficient development of such oilfield.