从储层精细描述的角度 ,对储层、沉积微相进行精细研究。根据砂体在纵向上的沉积韵律变化特征和平面上的展布特点以及位于构造的具体位置 ,结合文南油田和马厂油田的生产实例分析 ,对中高含水期油田的剩余油分布规律进行研究和挖潜。这对增加老油田的可采储量 ,提高老油田的最终采收率 ,具有广阔的应用前景。 From the perspective of reservoir fine description, the reservoir and sedimentary microfacies are studied carefully. According to the variation of sedimentary rhythm of sand body in the vertical direction and its distribution characteristics in the plane and the concrete location located in the structure, the distribution of remaining oil in the middle and high water-cut oil fields is studied based on the analysis of production cases in Wennan Oilfield and Machang Oilfield And tap the potential. This has the broad application prospect to increase recoverable reserves of old oilfields and increase the ultimate recovery rate of old oilfields.