运用甘谷驿油田共大滩区油藏地质、测井、分析化验和生产测试资料, 建立了长6 段层内、层间及平面3 个层次的宏观非均质模式, 描述了三角洲平原和前缘油气分布规律与储层非均质性的关系。研究表明, 长6 段宏观非均质性强, 层内油气主要富集在正韵律砂体的下部和反韵律砂体的上部; 平面油气主要分布在三角洲平原和前缘分流河道砂体中; 层间油气富集程度与纵向上层间旋回性基 本一致, 在物性好、非均质性相对较弱的长6 段Ⅰ砂组富集, 同时认为, 长6 段宏观非均质性控制平面和垂向上油气的形成与分布。

Based on the geology, logging and the data of core analysis and production test, three macro-heterogeneity models of inner layer, interlayer and horizon in the reservoirs are established for Chang 6 member in Gongdatan area, Ganguyi Oilfield. The relationship between the hydrocarbon distribution rule and the reservoir heterogeneity is studied. The research shows that the macro-heterogeneity of Chang 6 member is strong. The hydrocarbons of inner layer, horizon and interlayer mainly distribute respectively in the lower part of positive rhythm sand bodies and the upper part of the reverse rhythm sand bodies, in the delta plain and front distributary channel and in the first sand group of Chang 6 member which has good physical property and weak heterogeneity. It is shown that the macro-heterogeneity of Chang 6
member controls the lateral and vertical petroleumformation and distribution.