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基于变分理论的油藏实时约束优化

发表时间:2013-09-30  浏览量:1252  下载量:563
全部作者: 张凯,路然然,张黎明,姚军,李晓雪
作者单位: 中国石油大学(华东)石油工程学院
摘 要: 研究将油藏视为一个复杂的动态系统,以油田生产净现值为目标建立油藏开发生产优化数学模型,结合极大值原理推导得到相应的伴随模型,实现模型的高效求解,得到当前时刻最优的调控方案。由于优化对象是油田开发,所以必定涉及单井生产界限和区块总注入量等条件的约束。针对这些问题,研究采用对数变换和梯度平均的方法实现约束生产优化。在理论方法研究的基础上对油藏实例进行分析,结果表明:获得的最优生产方案符合油田实际,为智能油田体系提供了理论和技术支撑。
关 键 词: 油气田开发工程;智能油田;生产优化;伴随模型;约束优化
Title: Reservoir real-time optimization with constraints based on variational theory
Author: ZHANG Kai, LU Ranran, ZHANG Liming, YAO Jun, LI Xiaoxue
Organization: School of Petroleum Engineering, China University of Petroleum
Abstract: Reservoir is recognized as a complex dynamic system in this research. An optimal mathematical model of reservoir production is established, the goal of which is to maximize net present value of production. Combining with maximum principle, the corresponding adjoint model is deduced and solved high-efficiently to obtain optimal production schedule. Because the optimized object here is the development of oil field, it must relate to some constrained conditions such as the boundary limits of a single well and the total injection rate of reservoir block etc. To solve these problems, the paper used logarithmic transformation and the average gradient method to realize constrained production optimization. Based on the above theoretical study, applied examples of reservoir are analyzed. The results show that the obtained optimal production scheme is coincident with the demand of actual field and it will provide a strong theoretical basis and technical support for smart field system.
Key words: oil and gas field development project; smart field; production optimization; adjoint model; constrained optimization
发表期数: 2013年9月第18期
引用格式: 张凯,路然然,张黎明,等. 基于变分理论的油藏实时约束优化[J]. 中国科技论文在线精品论文,2013,6(18):1739-1748.
 
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