水驱稠油储层非均质性调控对策研究

Research on Control Strategies for Reservoir Heterogeneity in Water-Driven Heavy Oil Reservoirs

摘要: 以颗粒云岩储层攻关及非均相复合驱现场试验为依托，结合八面河油田水驱稠油储层非均质性强、采收率低的特点，从层内、层间、平面三个维度分析油层非均质性的表征及成因，通过定量关联非均质性参数与开发效果，针对性提出调控对策。研究表明：八面河油田稠油储层非均质性受沉积相、岩性组合、成岩后生作用控制，砂岩–碳酸盐岩混积区矛盾最突出；通过地质精细刻画、工艺技术适配、注采结构优化及多专业技术协同的综合施策，可显著增强水驱效果。

Abstract: Based on the breakthrough in granular cloud rock reservoirs and field tests of heterogeneous composite flooding, combined with the characteristics of strong heterogeneity and low recovery rates in water-flooded heavy oil reservoirs in the Bamianhe Oilfield, this study analyzes the characterization and causes of reservoir heterogeneity from three dimensions: intra-layer, inter-layer, and planar. By quantitatively correlating heterogeneity parameters with development outcomes, targeted control strategies are proposed. The research indicates that the heterogeneity of heavy oil reservoirs in the Bamianhe Oilfield is controlled by sedimentary facies, lithological assemblages, and diagenetic post-diagenesis, with the most pronounced conflicts occurring in the mixed accumulation zone of sandstone-carbonate rocks. Through comprehensive measures such as detailed geological characterization, adaptive process technology, optimized injection-production structures, and multi-disciplinary technical collaboration, water-flood efficiency can be significantly enhanced.