摘要
目前,页岩油水平井开发过程中采用自然能量开发,能量保持水平逐年降低,递减较大,整体采出程度低,低产低效逐年增多,常规吞吐补能技术有效期短、效果差,因此,急需开展水平井吞吐补能技术攻关,本文利用室内实验对裂缝、孔隙性、注入量、注入排量及焖井时间做了详细分析并开展大排量分段吞吐补能技术现场试验,持续优化完善注入参数,形成成熟的页岩油水平井大排量分段吞吐补能技术体系,该技术能有效补充地层能量、提高单井产量、增加开采经济效益,对同类油藏开发具有现实指导意义。
At present,the development of shale oil horizontal wells uses natural energy development,energy maintenance level decreases year by year,decreasing greatly,the overall degree of recovery is low,low production and inefficiency increase year by year,the effective period of conventional huff and puff energy supplement technology is short and the effect is poor.Therefore,it is urgent to carry out horizontal well huff and puff energy replenishment technology research.This paper uses laboratory experiments to study the fracture,porosity,injection amount,injection displacement and plugging time to do detailed analysis and carries out field tests of high displacement segmented huff and puff energy replenishment technology,continuously optimizes and improves the injection parameters,and forms a mature high displacement segmented huff and puff energy replenishment technology system for shale oil horizontal wells.This technology can effectively supplement the formation energy,improve the production of single well,increase the economic efficiency of mining,and has practical guiding significance for the development of similar reservoirs.
作者
孙大伟
SUN Dawei(Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China)
出处
《石油化工应用》
2025年第1期50-54,共5页
Petrochemical Industry Application
关键词
页岩油
吞吐补能
焖井时间
注入排量
shale oil
huff and puff energy replenishment
plugging time
injection displacement
作者简介
孙大伟(1986-),男,高级工程师,主要从事油田开发研究工作。E-mail:yuanliangl_cq@petrochina.com.cn。
