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储层大孔道的存在对油田注水开发有着重要的影响。要改善高含水期油藏注水开发效果,实现稳油控水,提高水驱效率,就必须加强对储层大孔道的识别。在研究大量中外相关文献资料的基础上,系统地概述了现有储层大孔道识别方法,分析了当前识别方法各自的优越性及存在的问题,并根据现代油藏描述发展要求提出了全新的储层大孔道识别构想——颗粒示踪技术。该技术把固体颗粒作为对储层孔道大小进行测量和描述的载体,可以实现对储层非均质性描述由定性向定量的飞跃。准确地识别储层大孔道,可为油田后续增产措施的优化设计提供依据,利于提高原油采收率和油田开发效益。
The existence of large channels in reservoirs has an important impact on the development of oilfield waterflooding. In order to improve the effect of waterflood development in high water-cut reservoirs, and realize the water diversion and the improvement of waterflooding efficiency, it is necessary to enhance the identification of large channels in reservoirs. Based on the research of a large number of related documents in China and abroad, this paper systematically summarizes the existing identification methods of large channels in reservoirs, analyzes their respective superiority and existing problems and proposes a brand new Large reservoir macropore recognition conception - particle tracing technology. This technique uses solid particles as a carrier to measure and describe the pore size of a reservoir and can achieve qualitative and quantitative levitation on the description of reservoir heterogeneity. Accurately identifying the large channels of reservoirs can provide the basis for optimizing the design of subsequent stimulation measures in the oilfield, which will help improve the recovery rate of crude oil and the benefit of oilfield development.