安塞油田长6油层注采调整技术

安塞特低渗透油田主要是长6油藏经过连续三年的综合治理,综合递减连续逐年下降,老井持续保持稳产。在此基础上,根据其储层特征及开发实践,总结、提出了安塞油田注水开发的主要注采调整技术,即早期强化注水、不稳定注水、同步或超前注水、沿裂缝注水、高含水区提高采液指数、改变渗流场、加密调整、注水剖面调整、产液剖面调整等,从而提高了单井产能及最终采收率,提高了整体开发效益。

The Injection-Production Adjustment Technology of Chang 6 Reservoir in Ansai Oil Filed

Continuous composite father was made on Chang 6 reservoir of Ansai low permeability oil field, which made combined decline rate decline yearly, and made old well keep continuous stable productivity rate. According to reservoir characteristic and development practice, the main injection production adjustment technology of injection development in Ansai oil filed was summarized, which are early enhanced injection, unstable injection, synchronizing or ahead injection, injection along fracture, enhance fluid productivity index in high water aquifer, seepage flow field change, well pattern crowding, injection profile adjustment, fluid production profile adjustment and so on. By means of these methods single well productivity and final recovery was increased.