压缩空气储能作为一种新型能源存储技术，在削峰填谷中发挥了重要作用。基于废弃油井储气的压缩空气储能系统，提出了一种管道-井筒储气室（储气空间由地上管道与地下井筒构成），模拟研究了其充气过程，重点分析了内部气体的热力学与流动特性。结果表明：随着压缩气体流入管道-井筒储气室内，在高温井筒壁面的加热作用下，气体温度迅速升高；随后，气体温度略高于壁面温度，此时气体向壁面散热；直至储气压力升高至约3 MPa，气体温度和散热量均趋于稳定。由于地温梯度的存在，充气过程中地下井筒不同区域内气体特性差异显著。随着井深的增加，气体流速、密度和沿程阻力减小；且随着储气压力的升高，各区域内气体流速和沿程阻力差异减小。研究结果对利用地下井筒作为储气空间的压缩空气储能系统的实际工程应用具有一定的理论指导意义。

Compressed air energy storage, as a new energy storage technology, plays an important role in peak shaving and valley filling. Based on the compressed air energy storage with abandoned oil wellbores, a pipeline-wellbore gas storage chamber, that is, the storage space was composed of above ground pipelines and underground wellbores, was proposed. Its inflation process was simulated, with a focus on analyzing the thermodynamics and flow characteristics of the internal gas. The results showed that with compressed gas flowed into the pipeline wellbore gas storage chamber, the gas temperature rapidly increased under the heating effect of the high-temperature wellbore wall. Subsequently, the temperature of the gas became slightly higher than that of the wall, at this point, a heat release of the gas to the wall. The gas temperature and heat dissipation tended to remain stable until the gas storage pressure rose to about 3 MPa. Due to the presence of geothermal gradient, there were significant differences in gas characteristics in different areas of the underground wellbore during the inflation process. As the depth of the wellbore increased, gas flow rate, density, and frictional resistance decreased. With the increase of the gas storage pressure, the differences in the gas flow rate and frictional resistance in different areas diminished. The results of this study provide significant theoretical insights that can effectively inform the practical application of compressed air energy storage systems, particularly those that employ underground wellbores as the repository for gas storage.