Abstract: From the current development situation,many Chinese old oil fields belong to mature oil fields.How to deal with these oil fields,find residual oil efficiently and quickly are important to the engineers.A new,practical method is proposed for describing the waterflooding of a mature reservoir.The technique is based on the ideas of large scale system theory.In this technique,the reservoir is regarded as a large scale system composed of inject wells,oil wells and pay bed.Combing probability and statistics,control theory,random signal processing,the mathematical models on assessing the dynamic situation of a well production,well-to-well interference and efficiency of waterflooding was developed.With these models,it is easy and quick to analyze integrately the fluid distribution of different development stage,residual oil area,and drainage state.The proposed technique has been successfully tested in some fields.

Key words: performance analysis, large scale system, assessment model, waterflooding, residual oil

摘要： 提出一种新的油藏动态分析方法,该方法以大系统理论方法为依据,将油藏视为由注水井、采油井与储层组成的大系统,运用概率统计、控制理论、随机信号处理等理论方法,通过建立水驱油评价模型、井间流体干扰评价模型、单井生产状况评价模型,整体分析油藏不同开发时期地下油水分布状况、水驱效果及泄油状况、弱排油区或死油区、油井生产状况等,及时提供制定措施的依据,挖掘剩余油,提高采收率。实际应用表明,其预测分析结果与实际吻合较好.

关键词: 油藏动态分析, 开发系统, 油田评价模型, 挖潜措施, 水驱油