致密砂岩油藏注水井压驱一体化技术应用  

Application of pressure-drive integration technology of water injection well in tight sandstone reservoir

作　　者：沈焕文[1] 马云成[1] 王艳玲[1] 牛金玲 刘可[1] 贺艳玫[1] SHEN Huanwen;MA Yuncheng;WANG Yanling;NIU Jinling;LIU Ke;HE Yanmei(Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China;Oil Production Plant 4 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 [2]中国石油长庆油田分公司第四采油厂,宁夏银川750006

出　　处：《石油化工应用》2023年第5期76-78,共3页Petrochemical Industry Application

摘　　要：致密砂岩油藏随注水开发时间延长注水压力快速上升,油层注不进采不出矛盾突出,导致有效驱替系统难以建立,油藏产量锐减严重。本文从剖析影响注水开发的制约因素入手,借鉴体积压裂理念,通过实施注水井体积压裂增加渗流通道基础上开展纳米微球调驱一体化治理,油藏注水难问题有效解决,年增注水量4.9×104m3,注采两端驱替系统重新建立,油井见效率达到85.7%,油藏产量止跌回升,开发效果显著提升。With the extension of water injection development time,the water injection pressure of tight sandstone reservoir rises rapidly,and the contradiction between oil layer injection and production is prominent,which makes it difficult to establish an effective displacement system,and the reservoir output drops sharply.In this paper,the restrictive factors affecting water injection development are analyzed,and the volume fracturing concept is used for reference.On the basis of implementing volume fracturing of water injection wells and increasing seepage channels,the integrated control of nano-microsphere profile control and flooding is carried out.The problem of reservoir water injection is effectively solved,the annual water injection volume is increased by 4.9×104m3.The displacement system at both injection and production ends is re-established,the oil well seeing efficiency reaches 85.7%,the reservoir output stops falling and rises,and the development effect is significantly improved.

关 键 词：致密砂岩油藏 注水井 体积压裂 纳米微球调驱 

分 类 号：TE357.62[石油与天然气工程—油气田开发工程]