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在注水开发油藏的过程中,吸水能力降低会影响油田的经济开发。随着注水开发的深入,吸水能力降低的分析对开发方案的制订、开发设施的设计以及评估显得越来越重要。该文对注水井吸水能力降低的分析方法进行了总结,对其中具有代表性的进行了系统研究。分析了吸水能力下降对注水开发效果的影响,提出了改善驱油效率提高采收率的相关对策。
In the process of waterflooding reservoirs, the decrease of water absorption capacity will affect the economic development of oilfields. With the development of waterflooding, the analysis of the decrease of water absorption capacity is more and more important for the formulation of development plans, the design and evaluation of development facilities. This paper summarizes the analysis methods of reducing the water absorption capacity of injection wells and systematically studies the representative ones. The influence of the decrease of water absorption capacity on the effect of water injection development was analyzed. Relevant countermeasures were put forward to improve oil displacement efficiency and oil recovery.