塔里木已探明的天然气有70％为凝析气,管道输送天然气也必须考虑凝析油的输送,以提高管道的经济效益。美国和加拿大正在合建的联盟管道是世界上第一条输送含凝析油天然气的大口径长输管道,对我国即将建设的西气东输工程有较大参考价值。综述了联盟管道的概况,介绍了其在天然气组分、输气压力、压缩机站功率配置、管材、防腐、压缩机、施工、投产和运行等方面的技术特点。 Tarim has proven 70% of natural gas condensate, pipeline transportation of natural gas must also consider the delivery of condensate in order to improve the economic efficiency of the pipeline. The coalition pipeline under construction by the United States and Canada is the world’s first large-caliber long-distance pipeline transporting condensate-bearing natural gas and has great reference value for the upcoming construction of the west-east gas pipeline project in China. This paper summarizes the outline of coalition pipeline, and introduces its technical features in natural gas components, gas pressure, power station configuration, pipe material, anticorrosion, compressor, construction, production and operation.