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利用相渗曲线法、物质平衡法、递减法对南堡2号潜山碳酸盐岩油藏开发效果进行评价,研究和探讨了南堡2号潜山油藏开发中存在的问题,分析了12口水平井生产特征,揭示了双重介质油藏油水运动规律,落实了剩余油分布规律。研究结果表明:油井生产效果受构造和储层双重因素控制;油藏初期含水上升规律与裂缝系统吻合较好,目前仍偏向于裂缝系统的理论含水上升规律;天然水侵驱动指数大,对油藏开发起主要作用;油藏递减率大,开发效果变差;油藏存在五种宏观剩余油分布模式和六种微观剩余油分布模式。
This paper evaluates the development effect of Nanpu No.2 buried hill carbonate reservoir by the method of phase-infiltration curve, mass balance and decrement, and studies and discusses the problems existing in the development of the Nanpu No.2 buried hill reservoir. 12 horizontal well production characteristics, revealing the law of movement of oil and water in dual-medium reservoir, and implementing the law of remaining oil distribution. The results show that the production effect of oil well is controlled by the dual factors of structure and reservoir. The law of early rising of water cut in reservoir is in good agreement with the fracture system, and the theory of water cut of the fracture system is still biased upward. Tibet plays a major role in reservoir development; the decreasing rate of reservoirs is large and the development effect is poor; and there are five macro-remaining oil distribution modes and six micro-remaining oil distribution modes in the reservoir.