凝析气藏改建地下储气库的研究与实践

The Study and Practice of Condensate Gas Reservoir Converted into Underground Gas Storage

地下储气库对调节冬夏季节天然气供需矛盾、保障用户需求、优化集输系统功能有重要作用。地下储气库建设在国外已有百余年的历史,而我国尚处于起步阶段,随着陕气进京及北京“蓝天工程”项目的实施,保障北京用气已成为供气方首要解决的问题。在对地下储气库概念及原理进行阐述的基础上,提出了建立地下储气库应具备的首要条件。通过国内外有关资料的调研分析,总结出地下储气库建库地质筛选原则,同时以大港油田凝析气藏地下储气库建设方案为例,介绍了地下储气库设计依据、设计原理及储气库运行方案优化。

The underground gas storage plays an important role in adjusting contradiction of supply and demand of natural gas in winter and summer,ensuring the requirement of consumers and optimizing the function of gathering and transferring system.The construction of such an underground gas storage abroad has hundred of years history,but it is just in initial phase in China.Along with the implementations of north Shaanxi's natural gas transferred toward Beijing and the Blue Sky project in Beijing,the guarantee of the use of natural gas of Beijing has become the premier issue of natural gas supplier.On the basis of explanation of concept and theory of undergroun gas storage,the chief conditions as necessary for construction of the underground gas storage are provided.Through the analysis of investigation results of concerned stuffs or data at home and abroad,the geology-selected rules for construction of underground gas storage have been summed up.At the same time,taking the construction project of underground gas storage of the condensate gas reservoir in Dagang oilfield as example,the design gist,theory and running project optimization are presented.