西南石油大学学报（自然科学版）2026，Vol.48Issue(4)：11-22,12.DOI:10.11885/j.issn.1674-5086.2025.12.15.01
油藏改建储气库次生气顶形成条件及影响因素研究
A Study on the Formation Conditions and Influencing Factors of Secondary Gas Cap in Oil Reservoirs Conversion into Gas Storage
摘要
Abstract
With the transformation of China's energy structure and the growth of natural gas consumption demand,the coordi-nated development of oil and gas has become an important development direction.It is of great significance to reconstruct gas storage in old reservoirs to revitalize oilfield assets and improve regional peak shaving and gas storage capacity.In the process of reservoir construction,the formation and migration of secondary gas cap is the key to the synergistic extraction,drainage and expansion of gas storage and the formation of high-speed injection and production capacity in the later stage,which is the core problem affecting the efficient capacity of gas storage.This paper explores the formation conditions and migration rules of secondary gas cap,and provides theoretical support for gas drive expansion scheme.Based on physical simulation,numerical simulation and reservoir engineering methods,the changes of gas saturation and formation pressure are analyzed to determine the critical conditions for the formation of secondary gas cap,and to reveal the influence mechanism of well pattern,formation dip angle,reservoir heterogeneity and other factors on the development and migration of gas cap.The results show that the well pattern and formation dip angle are the main controlling factors for the stability of secondary gas cap,and the strong heterogeneity of reservoir will inhibit the uniform expansion of gas cap.The study clarifies the key control parameters of gas cap evolution,provides a basis for optimizing the injection-production system,and has theoretical and engineering guiding significance for the coordinated development of oil and gas and the efficient construction of gas storage.关键词
砂岩油藏/储气库/次生气顶/数值模拟/注采参数优化Key words
sandstone reservoir/gas storage/secondary gas cap/numerical simulation/optimization of injection and production parameters分类
能源科技引用本文复制引用
马晓丽,李聪,蒋明洁,顾潇,辛春彦,田中敬..油藏改建储气库次生气顶形成条件及影响因素研究[J].西南石油大学学报（自然科学版）,2026,48(4):11-22,12.基金项目
油气重大专项(2025ZD1406800) （2025ZD1406800）
