Study on the Heterogeneity of Yan 9 Storage Sandstone in JT430 Wellblock of Jingbian,Ordos
[Purposes]In order to effectively develop the sandstone oil reservoir in Yan9 of JT430 well-block,it is very important to explore the heterogeneity characteristics of the reservoir sandstone.[Meth-ods]This paper uses gas test data,core sheet analysis and logging data to analyze the macro and micro heterogeneity characteristics of storage sandstone in Yan9 of JT430 wellblock,and discusses the control function of heterogeneity characteristics of storage sandstone.[Findings]The results show that the reser-voir sandstone in Yan9 of JT430 wellblock in Jingbian area is clastic quartz sandstone and clastic feld-spar sandstone,(increased)pore cementation and line,point-line contact development,with weak inter-layer and planar heterogeneity,strong intra-layer heterogeneity.[Conclusions]Sedimentation and dia-genesis are the main control factors leading to the heterogeneity of Yan 9 reservoir sandstone in JT430 wellblock.The sandstone oil of Yan9 is mainly distributed in the high physical sand layer at the struc-tural high point.
NETL
NSTL
万方数据
