地下储气库作为大型天然气管网系统的重要组成部分,确保其安全可靠运行对保障管网系统的供气能力尤为重要。本文针对枯竭油气藏型地下储气库的工艺特点和功能分区,将储气库系统工艺流程分为采气工艺和注气工艺;功能区块分为地下储层、注采井系统和地面系统。通过注采井系统将地下储层和地面系统联系起来,并采用基于一体化的可靠性分析方法,计算给定注采任务下,储气库系统的运行可靠性。最后,以某储气库为例,对其运行可靠性进行评价。 Underground gas storage, as an important part of a large-scale natural gas pipe network, ensures its safe and reliable operation is particularly important for ensuring the gas supply capacity of the pipe network system. In this paper, according to the process characteristics and functional zoning of the depleted oil-gas underground gas storage, the gas-storage system technological process is divided into gas production process and gas injection process. The functional blocks are divided into underground reservoir, injection and production well system and ground system . The underground reservoir and ground system are connected through injection and production well system, and an integrated reliability analysis method is used to calculate the operational reliability of the gas storage system under the given injection and production tasks. Finally, taking a gas storage as an example, the reliability of the operation is evaluated.