基于井间连通性的油藏开发生产优化方法

发布时间：2019-08-16 08:29

【摘要】：基于连通性思想与最优控制理论,建立了一种新的油藏开发生产优化设计方法。在现有井间连通性模型基础上,通过改进饱和度追踪方法,得到可预测油水动态的连通性模型,使其在处理油田常见液量剧变、关停井、转注等措施带来的流体转向时计算更为精确。在对油藏历史动态进行自动拟合反演后,建立了油藏生产最优控制模型,结合优化算法进行快速求解,最大化经济效益的同时,自动获取最优开发注采方案。概念算例表明,改进后饱和度追踪方法更为精确;实际算例显示,该方法能自动优化油井转注时机,且优化后注采方案能有效控水增油,提高经济开发效益,为现场开发方案设计提供指导。
[Abstract]:Based on the connectivity idea and optimal control theory, a new optimal design method for reservoir development and production is established. On the basis of the existing inter-well connectivity model, the connectivity model which can predict the oil-water dynamic is obtained by improving the saturation tracking method, which makes the calculation more accurate when dealing with the fluid steering caused by the sudden change of the common liquid volume in the oil field, the shutdown of the well, the diversion of the injection and so on. After automatic fitting inversion of reservoir history performance, the optimal control model of reservoir production is established, and the optimal development injection-production scheme is obtained automatically while the optimization algorithm is combined with the optimization algorithm to solve the problem quickly and maximize the economic benefit. The conceptual example shows that the improved saturation tracking method is more accurate, and the practical example shows that the method can automatically optimize the injection timing of oil wells, and the optimized injection-production scheme can effectively control water and increase oil, improve the economic development benefit, and provide guidance for the design of field development scheme.
【作者单位】：长江大学石油工程学院;中国石油化工股份有限公司石油勘探开发研究院;
【基金】：国家重大科技专项(2016ZX05014) 国家自然科学基金项目(No.51344003、No.51674039)资助
【分类号】：TE34

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