油气地质与采收率2025，Vol.32Issue(2)：142-151,10.DOI:10.13673/j.pgre.202405048
高含水油藏注水层段划分及注采液量调配协同优化设计方法
Collaborative optimization design method for water injection layer division and injection-production fluid allocation in high water cut reservoirs
摘要
Abstract
Fine layered water injection is a crucial method to enhance oil recovery in high water cut reservoirs.However,the design of water injection layer division and injection-production fluid allocation often lacks coordination,limiting the full realization of process synergy.To address this,under the condition of an unknown optimal number of water injection layers,a mathematical model of fine layered water injection optimization was developed.This model aimed to maximize economic net present value while considering multiple engineering and geological constraints,integrating water injection layer division and injection-production fluid allocation into a unified framework.By leveraging the Dung Beetle Optimizer,a collaborative optimization design method for water injection layer division and injection-production fluid allocation in high water cut reservoirs was proposed,enabling the integrated optimization design of key parameters for fine layered water injection.Using the Egg model as an example,this study compared the effects of three approaches:standalone optimization of injection-production fluid allocation,standalone optimization of layered wa-ter injection parameters,and integrated fine optimization.The results indicate that for high water cut reservoirs with severe inter-layer physical property interference,the integrated fine optimization approach significantly outperforms the other standalone meth-ods by optimizing layer division of layered water injection wells,fluid allocation,and injection-production fluid allocation of other wells.Through automatic layer division and reorganization of water injection layers,coupled with intelligent matching and adjust-ment of injection-production parameters,the approach effectively alleviates interlayer conflicts during the high water cut stage,op-timizes the flow fields,and achieves balanced displacement across layers.Over a 5-year production forecast,this approach im-proves the recovery factor by 1.08 percentage points compared to the pre-optimization scenario.关键词
高含水/分层注水/层段划分/蜣螂优化算法/协同优化Key words
high water cut/layered water injection/layer division/Dung Beetle Optimizer/collaborative optimization分类
能源科技引用本文复制引用
张先敏,李闪闪,冯其红,刘晨,刘向斌..高含水油藏注水层段划分及注采液量调配协同优化设计方法[J].油气地质与采收率,2025,32(2):142-151,10.基金项目
国家科技重大专项"海上稠油油田开发模式研究"(2016ZX05025-001),中海油重大科技项目"海上'双高-双特高'水驱油田提高采收率油藏关键技术"(KJGG2021-0501). （2016ZX05025-001）
