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水驱是一次采油后常用的提高采收率技术,但是由于地层非均质性的影响,致使注入水沿高渗层位突破而圈闭未波及到的原油.为了改善此类问题,提出了一种新的优化控制模型,其目标是调控各井的注采量,延缓水驱指进现象,尽可能多地采出原油.该模型是基于油藏数值模拟与优化理论构建的,通过控制变量的梯度求解,根据不同的需求,优化多个目标策略方案(如以累产油、累产水及经济效益为目标的最优方案),用以辅助油田生产决策.在理论方法研究的基础上,采用该模型对油藏实例进行了优化计算与分析,结果表明:获得的最优生产方案符合油田实际,为油田开发的智能调控提供了理论和技术支撑.
Water flooding is a commonly used technique to enhance oil recovery after an oil recovery, but because of the heterogeneity of formation, the injected water breaks through the high permeability layer to trap the crude oil that has not been affected.In order to improve such problems, A new optimization control model aims to control the injection and production of each well, delay the water flooding fingering and extract as much crude oil as possible.The model is built on the basis of reservoir numerical simulation and optimization theory. Through the control According to the different requirements, we optimize several target strategies (such as the optimal scheme with the goal of accumulating oil, water and economic benefits) to assist the oilfield production decision-making.On the basis of theoretical method research The model is used to optimize and calculate the reservoir examples. The results show that the optimal production plan accords with the actual field and provides theoretical and technical support for the intelligent control of oilfield development.