南梁华64区延9沉积微相研究

根据取心井的岩心资料、地质资料、试油资料及测井综合曲线,采用小波分析技术划分地层界面,建立了精准合理的地层格架;通过建立测井相和沉积相关系数据库,利用灰色关联分析技术,优选出适合本区的沉积微相分析评价参数、标准和权系数;采用交会图等技术编制了沉积微相平面图。南梁华64区延9期物源来自研究区东南部,主要沉积微相有分流河道、天然堤、河漫滩及河漫沼泽,研究区从延93到延91接受了从水退到水进、再到水退沉积,延91沉积了主要含油砂体。

Sedimentary Microfacies Study of Yan 9 of Hua 64 Block in Nanliang

Based on the information from the core,geology,testing data and log synthetical plot,after the bed boundary is divided by wavelet technique,the fine layer framework is built.By evaluating parameters and standard,and by grey association analysis technique through establishing the relationship data base of electrofacies and sedimentary facies,weight coefficient is optimized.Moreover,the sediment microfacies plan is made by cross plot technique.The study indicates that the sediment source is from the southeastern block.The main microfacies include the distributary channel,natural barrier,flood-plain and flood swamp.There is the process of aquifer withdraw-advance-withdraw.The Yan 91 sand containing oil is the main sand.