辽河油田雷家致密油储层改造研究

RECONSTRUCTION RESEARCH OF LEIJIA TIGHT OIL RESERVOIR IN LIAOHE OILFIELD

辽河油田雷家地区泥质白云岩储层常规试油与压裂后低产、低效,为了在雷家地区致密油储层勘探上取得突破,通过直井的资料录取、分析、实验、储层改造尝试,逐步总结出从钻井到储层改造初见成效的方法。保证水平井钻完井顺利完成,增加套管头抗压级别,实现速钻桥塞分簇射孔联作,采用Hiway技术进行套管压裂改造等,获得了水平井储层改造增产效果的突破。因此,在该地区继续采用水平井完井,进行多级压裂改造储层,进而获得区域上勘探开发的规模储量。

After conventional well test and hydraulic fracturing in Leijia argillaceous dolomite reservoir,the productivity was low.In order to obtain higher productivity in tight oil reservoir exploration of Leijia areas,new reservoir reconstruction methods was obtained through the analysis of drilling data,including adopting multiple stage fracturing technology,Hiway fracturing technology,clustering perforation technology,and increasing the anti-pressure level of casing head etc.And the optimum perforation mode was studied.The application results showed that the new reservoir reconstruction methods could improve reservoir exploration and development effect in Liaohe oilfield Leijia argillaceous dolomite reservoir.