裂缝储层注水井深部调剖技术研究与应用

Research and application of injection well deep plugging technology in fractured reservoir

安塞油田王窑东部、西南部,南梁西区和候市西南部等区块裂缝发育,动态监测和开发动态显示,储层裂缝具有明显的方向性,导致主向井见水较快、甚至水淹,而侧向井长期不见效,产能损失严重,影响区块的开发效果。为了封堵大孔道及高渗透层,提高注水开发效果和水驱采收率,安塞油田自2005年以来,结合裂缝储层地质特性,深入开展了裂缝储层注水井调剖体系研究与应用。重点介绍了近几年裂缝储层注水井深部调剖技术在安塞油田的完善与应用情况,通过技术的不断完善和认识的不断加深,已逐步确定了适合安塞油田的注水井深部调剖体系、工艺参数设计和时机选择,为安塞油田裂缝储藏开发提供了有利的技术支撑。

Dynamic monitoring and development behavior indicate that there is apparent directivity in reservoir crack of blocks of East and South-west of Wang Yao、West District of Nan Liang and South -west of Hou Shi in An Sai oilfield.As a result,water quickly breakthrough the principal wells,even drowned,However,there is little effectiveness in lateral well,finally,there is serious losses in deliverability that influence the block development.In order to plug high capacity channel and high permeability zone,improve injection profile and enhance water-flooding effectiveness and water displacement recovery, combined with the geologic feature of fractured reservoir,research and application of deep plugging technology of injection well in fractured reservoir of An Sai oilfield has been deeply developed since 2005.This paper mainly introduced the application of deep plugging technology of injection well in fractured reservoir in recent years.Through the continuous improvement of technology and continuous reinforcement of understanding,deep plugging system of injection well、technologic parameters design and timing selection,The system provided favorable technical assistance for the exploitation of fractured reservoir of An Sai oilfield.