摘要
为了增加储层压裂改造效果,采用CO_(2)前置增能压裂施工工艺,CO_(2)前置段塞可以有效补充地层能量,降低储层损害并增加返排效率。从现场试验可以看出,返排率均达到88%以上,原油增产最高达到68 t,投入产出比在1:2.5以上,可以有效提高储层改造效率,取得良好的经济效益。
In order to increase the effect of reservoir fracturing,the CO_(2) pre slug can effectively supplement the formation energy,reduce the reservoir damage and increase the flowback efficiency.From the field experiment,it can be seen that the flowback rate is more than 88%,the oil production is up to 68 t,and the input-output ratio is more than 1:2.5,which can effectively improve the efficiency of reservoir transformation and obtain good economic benefits.
作者
张朔
谢军
赵勖
孙蒙
陈彦楠
王志民
ZHANG Shuo;XIE Jun;ZHAO Xu;SUN Meng;CHEN Yannan;WANG Zhimin(Downhole Technology Service Company,CNPC Bohai Drilling Engineering Company Limited,Tianjin 300283,China)
出处
《石油化工应用》
CAS
2021年第1期63-65,共3页
Petrochemical Industry Application
基金
中石油渤海钻探工程有限公司项目“CO2蓄能及干法压裂工艺技术研究”,项目编号:2020ZD19Y-01。
关键词
CO_(2)增能
压裂施工
返排效率
地层能量
产量
CO_(2) energy enhancement
fracturing operation
flowback efficiency
formation energy
production
