双高油藏“二三结合”提高采收率技术应用  

Application of"two-three combination"EOR technology in double-high reservoir

作　　者：沈焕文[1] 马兵[1] 高远飞[1] 白梅[1] 丁冬华[1] 李琪[1] SHEN Huanwen;MA Bing;GAO Yuanfei;BAI Mei;DING Donghua;LI Qi(Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China)

机构地区：[1]中国石油长庆油田分公司第三采油厂,宁夏银川750006

出　　处：《石油化工应用》2023年第9期67-70,82,共5页Petrochemical Industry Application

摘　　要：特低渗油藏进入双高开发阶段后一次井网适应性变差,水驱油效率大幅下降,大量剩余油及残余油仍未驱替,围绕剩余油分布零散、死油区动用难问题,开展二次加密调整井网转换结合空气驱三次采油综合提高采收率技术现场试验,近五年现场实践表明,试验区开发效果显著提升,自然递减、含水率上升率呈负增长,阶段动态采收率提高3.6%,预测最终采收率提高8.5%以上。After the ultra-low permeability reservoir entered the double-high development stage,the primary well pattern adaptability became worse,and the water flooding efficiency decreased greatly.A large amount of residual oil and residual oil were still not displaced.Focusing on the problems of scattered distribution of residual oil and difficulty in producing dead oil areas,the field test of secondary infilling adjustment well pattern conversion combined with tertiary oil recovery by air flooding was carried out.The field practice in recent five years showed that the development effect in the experimental area was significantly improved,the natural decline and water cut increase rate showed negative growth,the stage dynamic recovery rate increased by 3.6%,and the predicted final recovery rate is increased by more than 8.5%.

关 键 词：加密调整 空气泡沫驱 提高采收率 

分 类 号：TE327[石油与天然气工程—油气田开发工程]