MTZ复杂小断块油田全面投入开发至今 ,已稳产了 4年。油藏动态和静态特征反映出油田被内部微型小断层、裂缝、稠油等因素所复杂化 ,造成注采矛盾 ,影响开发效果。本文通过综合研究提出①微型小断层的及时发现和识别是建立精细地质模型、确定合理注采井网的关键 ;②砂体沉积微相差异决定了油层层间、平面注水开发非均质性 ;③地层条件下的微裂缝对开发起着积极的效果 ,一定程度上可改善油层渗透能力 ;④油藏边部的稠油环对边外注水不利 ,注水方式应以边缘加内部注水为主 MTZ complex small fault block oil field fully developed until now, has been stable for 4 years. The dynamic and static characteristics of the reservoir show that the oilfield is complicated by the internal micro-faults, fractures, heavy oil and other factors, resulting in the contradiction between injection and production, affecting the development effect. In this paper, through comprehensive study, it is proposed that the timely identification and identification of micro-small faults is the key to establishing a fine geological model and determining the rational injection and production of well patterns. The difference of sedimentary microfacies determines the heterogeneity of inter- (3) micro-fractures in the formation conditions have a positive effect on the development, to some extent, the permeability of the reservoir can be improved; (4) the heavy oil ring at the edge of the reservoir is unfavorable to the water injection outside the reservoir;