天然气工业2023，Vol.43Issue(12)：37-45,9.DOI:10.3787/j.issn.1000-0976.2023.12.004
柴达木盆地涩北强水侵气藏稳产关键技术与开发对策
Stable production technologies and development strategies for the Sebei gas pool with severe water intrusion in the Qaidam Basin
摘要
Abstract
The Sebei gas field in the Qaidam Basin is the largest unconsolidated sandstone gas pool with severe water intrusion in China.Due to the geological characteristics of gentle structures,loose reservoir rocks,multiple thin layers,and complex gas-water relationship,its development suffers from severe water invasion,sand erosion/burial,and uneven recovery of reserves.To ensure the development of the Sebei gas field with enhanced gas recovery and long-term stable production,through an integrated research on geology,gas reservoir,engineering technology,and other disciplines,this paper clarifies the geological characteristics of the gas field,reviews the stable production technologies that have been developed and applied since the beginning of the 12th Five-Year Plan,and analyzes the challenges for maintaining a stable production.Finally,this paper presents the prospects of stable production.The results show that the stable production of the Sebei gas field is restricted by some geological characteristics(e.g.structure,reservoir rocks,and water intrusion)and development challenges(e.g.sand production,and uneven recovery of reserves).There is a series of development technologies for unconsolidated sandstone gas reservoirs with edge water,including static and dynamic fine sandbody description and potential reserves tapping,development indicator monitoring and dynamic control optimization,water intrusion and sand production prevention and control,and surface gathering purification and digitalization.Moreover,for the stable production of the Sebei gas field,which is unprecedently difficult,further understanding of the gas reservoir,innovative technologies/processes and comprehensive solutions are required,in addition to the experience in previous practices.The annual gas production rate of the gas field is expected to reach and maintain at 50× 108 m3 or more in 2023-2025.It is concluded that the existing stable production technologies have effectively facilitated the Sebei gas field,with its practice being referential for other gas fields and conducive to the national energy security.关键词
涩北气田/边水侵入/治水治砂/强水侵气藏/稳产关键技术/老气田稳产Key words
Sebei gas field/Edge water intrusion/Water/sand control/Reservoir with severe water intrusion/Stable production technology/Stable production of mature gas fields引用本文复制引用
宋伟,奎明清,李江涛,王小鲁,刘俊丰,孙勇,温中林,杨国军,谭晓华..柴达木盆地涩北强水侵气藏稳产关键技术与开发对策[J].天然气工业,2023,43(12):37-45,9.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目"复杂天然气田开发关键技术"(编号:2021DJ1705). （编号:2021DJ1705）
