喇北东块三类油层三元复合驱剩余油分布规律研究

Study on Residual Oil Distribution After Asp Flooding in the Third Kind of Reservoir in the Northeast Block of Lamadian Oilfield

喇北东块已进入高含水后期开采阶段,为了提高采收率,需要寻找剩余油开采潜力。通过研究喇嘛甸油田北东块高二1-18层,在对此开展精细油藏描述的基础上,根据单井隔夹层识别、沉积微相划分和储层特征研究,结合动态资料,分析总结了该区剩余油控制因素和分布规律。结果表明:垂向上储层的韵律结构与剩余油分布密切相关,通过韵律可以划分不同的剩余油分布模式;平面剩余油分布主要受沉积微相和储层特征、平面非均质性和注采关系的控制。

The northeast block of Lamadian oilfield has entered a development stage of high water-cut, in order to improve the recovery efficiency, the exploitation potentiality of remaining oil need be found. Through studying 1-18 layer of the northeast block in Lamadian oil field, on the basis of fine reservoir description, based on single well interlayer identification and division of sedimentary microfacies and reservoir characteristics research, combined with dynamic data, control factors and distribution of remaining oil in the area were analyzed. The results show that residual oil distribution is closely related to the rhythm structure of vertical reservoir, remaining oil distribution can be divided into different patterns by rhythm structure; plane residual oil distribution is mainly controlled by sedimentary microfacies and reservoir characteristics, plane heterogeneity and injection-production relationship.