凝析气藏反凝析污染评价及解除对策研究  

Study on Evaluation of Retrograde Condensate Pollution in Condensate Gas Reservoir and Its Removal Countermeasures

作　　者：邹思琪 张艺钟 张茂林[1,2] 杨龙 凡文科[3] 黄晓惠[3] ZOU Si-qi;ZHANG Yi-zhong;ZHANG Mao-lin;YANG Long;FAN Wen-ke;HUANG Xiao-hui(School of Petroleum Engineering,Yangtze University,Wuhan Hubei 430100,China;Hubei Provincial Collaborative Innovation Center for Unconventional Oil and Gas at Yangtze University,Wuhan Hubei 430100,China;Geological Research Institute of Daqing Sixth Oil Production Plant,Daqing Heilongjiang 163114,China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]长江大学非常规油气湖北省协同创新中心,湖北武汉430100 [3]大庆市第六采油厂地质研究所,黑龙江大庆163114

出　　处：《当代化工》2023年第11期2639-2644,共6页Contemporary Chemical Industry

基　　金：国家自然科学基金青年基金,考虑地层水与储层多孔介质的页岩气藏多组分吸附相态行为研究(项目编号:52004032)。

摘　　要：在凝析气藏衰竭开发时,由于储层压力低于系统的露点压力,系统会发生“反凝析”,导致产能下降。对反凝析伤害程度进行准确评估,并采取有效措施消除其影响,在凝析气藏的勘探和开发过程中,是不变的主题。为了缓解气井中反凝析污染所带来的负面影响,已经采用了多种技术手段,在考虑凝析气藏的反凝析伤害机理的基础上,探讨了反凝析伤害程度评价方法,并对国内外现有的反凝析现象进行了降低和解除的研究。此外,在仅注入干气的基础上,提出了注干气加甲醇解除反凝析伤害新技术,该方法缓解了BK凝析气藏反凝析污染,为凝析气藏解除反凝析伤害提供指导性建议。When a condensate gas reservoir is developed,due to the reservoir pressure being lower than the dew point pressure of the system,the system will experience"retrograde condensation",leading to a decrease in production capacity.Accurately evaluating the degree of damage caused by retrograde condensation and taking effective measures to eliminate its impact is a constant theme in the exploration and development process of condensate gas reservoirs.In order to alleviate the negative impact of retrograde condensation pollution in gas wells,various technical means have been adopted.Based on the consideration of the mechanism of retrograde condensation damage in condensate gas reservoirs,evaluation methods for the degree of retrograde condensation damage have been explored,and research has been conducted to reduce and eliminate existing retrograde condensation phenomena at home and abroad.In addition,a new technique for relieving retrograde condensation damage has been proposed,providing guidance and recommendations for relieving retrograde condensation damage in condensate gas reservoirs.

关 键 词：凝析气藏 反凝析伤害 气井产能 评价方法 

分 类 号：TE349[石油与天然气工程—油气田开发工程]