大港复杂断块油田二次开发重构地下认识体系

Reservoir cognition for secondary development of the complicated fault in Dagang Oilfield

港西油田是典型的复杂断块油田,经过多年的开发,总体进入高含水高采出程度开发阶段。通过高分辨率三维地震资料的重新采集、处理和精细解释以及各种动态监测资料的综合应用,港西油田完成了重新构建地下认识体系,量化单砂体潜力和剩余油分布,探索了重构地下认识体系技术路线,初步应用取得较好效果,为二次开发重建井网方案的整体优化设计奠定了基础。

Gangxi Oil Field is a typical complicated fault oil field. After forty years of development, it has gone to a stage of high degree of recovery and high water-cut. High definition 3D seismic data has been collected, treated and then interpreted. Dynamic monitoring data has also been applied comprehensively for cognition of the reservoir. As a result, potentiality of sand body and distribution of remaining oil has been clearly understood. The method for cognition of reservoir in the paper has been proved to be effective. Reservoir cognition laid a foundation for well net optimization and design during secondary development of Gangxi Oilfield.