复杂断块油藏特高含水期剩余油控制机制实验

Experiment on remaining oil control mechanism for complex fault-block reservoir at high water cut stage

吴义志

WU Yizhi

中国石化胜利油田分公司勘探开发研究院，山东 东营 257015

Research Institute of Exploration and Development, Shengli Oilfield Company, SINOPEC, Dongying 257015, China

为研究复杂断块油藏特高含水期剩余油控制机制，指导该类油藏剩余油的高效挖潜，文中利用三维物理模型研究了地质及开发因素对剩余油的控制机制和影响程度。结果表明：断层遮挡是该类油藏高部位剩余油的主控因素，对应于矿场上的屋脊一线及断层夹角剩余油；储层非均质性严重影响剩余油的分布状态，造成平面剩余油分布不均衡；开发中的井网形式也是造成最终剩余油富集的因素。针对不同类型的剩余油提出了对应的动用措施，研究结果对现场的开发有一定指导意义。

In order to study the control mechanism of remaining oil at high water-cut stage for complex fault-block reservoirs and guide the effective exploration of this kind of reservoir, a 3D physical model is used to study the control mechanism and the impact made by the geological and development factors of complex fault block reservoirs at high water-cut stage. The result shows that fault screening is the main controlling factor for remaining oil of this kind of reservoir, corresponding to the remaining oil at the ridge of the reservoir and the corner of the fault site; the reservoir heterogeneity greatly affects the distribution of remaining oil and causes the uneven distribution of remaining oil; the well pattern is also a factor for accumulation of remaining oil. With experiments, the control mechanism of remaining oil for fault?鄄block reservoirs was figured out and the corresponding measures for different kinds of remaining oil were proposed, which has great guiding significance for development on site.

10.6056/dkyqt201805012