高含水开发后期优化补孔措施挖潜剩余油实践

Method of Tapping Remaining Oil through Perforations Adding at Later Stage of High Water-cut

阐述了通过补孔完善注采关系进行剩余油挖潜的做法。对萨北开发区近年来的补孔井效果进行了详细分析,包括对限流法压裂投产的低效井进行限流段重射补孔、通过补孔完善不同层系水驱注采关系、水驱井补孔完善聚驱单砂体注采关系等,确定了经济有效的措施类型。实践表明,通过补孔措施,灵活运用水驱低产井完善水驱不同井网、聚驱注采关系,挖潜不完善井区的剩余油,可以取得较好开发效果。

This paper elaborates on the method of tapping the remaining oil through perforations adding to improve the injection-production relationship.It analyzes in detail the effect of perforated wells in the north Sartu development area ＇in recent years,including the current limiting supplementary perforations to the low producing wells produced through the current limiting fracturing,improving the water drive injection-production relationship of various series of strata,improving the injection-production relationship of polymer flooding sin- gle sand body for water drive wells.The economic and shows that a better exploiting effect has been gotten effective measures types have been determined.Practice through the measures of perforation,perfecting various well pattern through flexible application of water driving low production wells,improving polymer flooding and injection-production relationship ,and further tapping the remaining oil of the non-perfect well blocks,which can get a good development effect.