水气交替提高采收率技术进展  

Development of gas-water alternating recovery technology

作　　者：潘佳莹 闫健[1] 佀彬凡 孙晓东 王立 朱文杰 PAN Jiaying;YAN Jian;SI Binfan;SUN Xiaodong;WANG Li;ZHU Wenjie(College of Petroleum Engineering,Xi'an Shiyou University,Xi'an 710065,China;The 12th Oil Production Plant of Changqing Oilfield Company,Qingyang 745000,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]长庆油田分公司第十二采油厂,甘肃庆阳745000

出　　处：《精细石油化工进展》2024年第1期15-22,共8页Advances in Fine Petrochemicals

摘　　要：水气交替(WAG)注入技术是一种提高油藏采收率的有效方法,已经在多种类型的油藏中得到应用。本文介绍了WAG技术的发展背景和研究意义,然后根据注入方式、流体类型和混相状态对WAG技术进行了分类,并分别阐述了各类WAG技术的优缺点和驱油机制;分析水的矿化度、滞后效应、油藏非均质性、润湿性和WAG比例等因素对WAG技术效果的影响。基于WAG技术在实施过程中遇到的气体提前突破、设备问题和沥青质沉积等挑战,提出相应的解决措施,对未来的研究方向进行展望。Water alternating gas(WAG) technology is an effective method to enhanced oil recovery and has been widely applied in various types of reservoirs.Firstly,in this paper,the development background and re?search significance of WAG technology were introduced.Subsequently,the WAG technology was classified based on injection mode,fluid type,and phase state.The advantages and disadvantages of WAG technologies and the mechanism of oil displacement were described.Furthermore,the effect of water salinity,hysteresis ef?fect,reservoir heterogeneity,wettability,and WAG ratio on WAG technology were discussed.In addition,the challenges encountered in the implementation of WAG technology such as gas breakthrough,equipment prob?lems and asphaltene deposition were analyzed.And the corresponding solution measures were put forward and the future research direction was pointed out.

关 键 词：提高采收率 水气交替注入 非均质性 驱油 

分 类 号：TE357[石油与天然气工程—油气田开发工程]