基于安塞油田G52 井区长10 油藏初期产能分布特点，从沉积微相、成岩作用（成岩相）等地质因 素的角度分析了其对初期产能的影响。结果表明：①初期产能的分布与沉积微相关系密切，即分流河道 微相砂体厚度大，油层较厚，物性较好，初期产能较高；河道边缘微相砂体厚度小，油层薄，物性差，初期 产能较低。②初期产能的大小受成岩作用（成岩相）影响明显，即强溶蚀成岩相储层物性最好，初期产能 最高；溶蚀成岩相储层物性较好，初期产能较高；长石溶蚀-绿泥石薄膜胶结成岩相储层物性较差，初期 产能较低；沿西南方向，由于破坏性成岩作用逐渐增强，储层物性变差，导致部分油层厚度较大且位于分 流河道主体部位井的初期产能很低甚至无产能。

Based on the analysis of the early productivity distribution of Chang 10 reservoir in G52 well field of Ansai Oilfield, this paper analyzed the influence of sedimentary microfacies and diagenesis（diagenetic facies） on the early productivity. The result shows that the early productivity distribution is closely related to sedimentary microfacies. Distributarychannel has a higher earlyproductivityfor the precession ofthick sand beds, thick oil reservoirs, relatively high porosityand permeability, whereas the channel edge has a lower earlyproductivitybecause ofits opposite features against the distributary channel. The early productivity is subjected to the effect of diagenesis（diagenetic facies）. For the decline of reservoir properties, the early productivity of strong corrosion lithofacies reservoirs, corrosion lithofacies reservoirs and corrosion-chlorite cementation lithofacies reservoirs reveals the same trend. Gradual intensity of the destructive diagenesis heading southwest resulted in poor reservoir properties and thus accounts for rather lowor even noearlyproductivity.