目前中国天然气发展正处于一个大好时机。国家已确定把开发利用天然气作为改善大气环境的一项重要举措，并把天然气长输管道列入全国重点基础建设项目。同时出于环境要求，各地区特别是东部沿海地区对天然气的需求越来越迫切。目前我国已初步形成川渝、陕甘宁、新疆及青海... At present, China’s natural gas development is at a good time. The country has identified the development and utilization of natural gas as an important measure to improve the atmospheric environment and put the long-distance natural gas pipeline into key national infrastructure projects. At the same time, due to environmental requirements, the demand for natural gas in various regions, especially in the eastern coastal areas, is becoming more and more urgent. At present, China has initially formed Sichuan-Chongqing, Shaanxi-Gansu-Ningxia, Xinjiang and Qinghai ...