FMI测井资料处理在塔中62-83井区储层定量评价中的应用

Application of FMI Imaging Logging Data in Quantitative Reservoir Evaluation in Tazhong Well Block 62-83

碳酸盐岩储层按照裂缝和孔洞之间的组合方式,可分为裂缝型、孔洞型和裂缝-孔洞型3种类型。而塔中62-83井区主要以孔洞型和裂缝-孔洞型为主。研究表明,对于孔洞型储层,将FMI资料定量计算结果与岩心观测进行对比,确立孔洞直径2mm作为细分储层类型的标准;对于裂缝-孔洞型储层,由FMI图像判断裂缝是否溶蚀来进一步细分储层类型。为了进行储层有效性评价,引入累计有效孔隙厚度的概念。应用结果表明,上述方案对该井区储层类型的评价结果与录井油气显示和观测结果较符合。

According to the combination of pores and fractures,carbonate reservoir was divided into fracture type,vug type,and fracture-vug type.The main kinds of reservoirs in Tazhong Well Block 62-83 were vug type and fracture-vug type.Study shows that comparing core observation with FMI quantitative calculation,the pore with diameter equals to 2cm is the standard for subdividing vug type.For fracture-vug type,fracture corrosion is the sign.Cumulative thickness of effective pore is used in reservoir evaluation.Application of the above systems indicates that the scheme is effective.