摘要
为改善油藏动用状况,缓解超稠油直井蒸汽吞吐进入高速周期递减的难题,对油藏均质性及剩余油分布不规律等因素进行分析。结合现场应用认为,新钻水平井可采用循环预热方式保证蒸汽循环加热水平段,对于井间加密水平井可采用双管注汽、CO2调剖、直井辅助吞吐等方式有效改善水平段动用状况,提高油井采收率。
To relieve the difficult problem that steam huff and puff of super heavy oil vertical well decreases in a high cycle scale,the paper analyzes homogeneity of oil reservoirs,the irregular distribution of remaining oil,and so on.Combined with the application,the cycling preheating can be used to guarantee the horizontal section being warmed by circular steam,double-barreled steaming can be used for infill horizontal well,CO2 profile control,vertical well assisting huff and puff and so on,to improve the use condition of horizontal section effectively and enhance oil recovery.
出处
《重庆科技学院学报（自然科学版）》
CAS
2010年第4期42-44,共3页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
关键词
水平井
动用状况
超稠油
循环预热
horizontal well
producing condition
super heavy oil
cycling preheating
