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一、历史和现状我国是利用天然气最早的国家。远在公元前三世纪末,就在四川盆地的自流井构造上钻采天然气,作为煮盐的燃料。此后,在很长的历史时期内,我国钻采天然气的技术在世界上处于领先地位,如十五世纪中叶,井深超过了一千米。发现了高压天然气层,井口火舌高达几十丈。但是,我国天然气的生产发展缓慢,解放前仅有自流井、锦水、圣灯山等7个气田,年产气量很低。建国以来,天然气的勘探和开发发展迅速,除台湾省以外,已经发现气田65个,天然气的年产量在1980年达到了142.7亿米~3。可是气田
I. History and Status China is the earliest country to use natural gas. As far back as the third century BC, natural gas was drilled in the Artesian well in the Sichuan Basin as a fuel for boiling salt. Since then, during a long historical period, our country’s technology for drilling natural gas has taken the lead in the world. For example, in the middle of the 15th century, the depth of well exceeded one thousand meters. Found a high-pressure gas layer, wellhead flames up to several ten feet. However, the production of natural gas in our country is slow to develop. There are only 7 gas fields such as Artesian well, Jinshui and Shengdengshan before the liberation, with very low annual gas production. Since the founding of the People’s Republic of China, the exploration and development of natural gas have been developing rapidly. Besides Taiwan Province, 65 gas fields have been discovered and the annual output of natural gas reached 14.27 billion m 3 in 1980. But gas field