“八五”、“九五”期间我国天然气探明储量大幅度增长 ,大中型气田分布规律的深化研究密切关系到天然气储量的增长势头。克拉通盆地下层序古隆起控气理论和上层序非构造圈闭控气机理是克拉通大中型气田富集分布的基本规律。前陆盆地是我国富气盆地类型之一 ,其冲断带下盘大型构造圈闭群、前缘斜坡岩性尖灭区带与浅层次生气藏、前缘隆起上的断块圈闭群等是该类盆地有利的天然气富集区带。依据充分的地质资料 ,结合我国天然气勘探实际 ,提出了大中型气田富集区带的优选原则 ,并针对我国陆上主要含气盆地优选出大中型气田富集区带 9个 ,有益于我国天然气勘探部署。 During the “Eighth Five-Year Plan” and “Ninth Five-Year Plan” period, the proven reserves of natural gas in our country have increased greatly. The deepening research on the distribution of large and medium-sized gas fields is closely related to the growth momentum of natural gas reserves. The underlying paleo-uplift controlled gas theory in the craton basin and the non-structural trapping gas control mechanism in the upper strata are the basic laws of the enrichment and distribution of the large-sized and medium-sized gas fields in the craton. The foreland basin is one of the types of gas-rich basins in China. Its thrust belt is a large-scale structural traps in the lower plate. The lithological pinch-out zone of the front slope and the shallow secondary gas reservoirs and fault block traps on the uplift Such favorable basin of natural gas-rich belts. Based on the sufficient geological data and the reality of natural gas exploration in our country, the principle of enrichment zone for large and medium-sized gas fields is put forward. According to the major gas-bearing basins in China, 9 large and medium-sized gas field enrichment zones are optimized, which is good for China’s natural gas Exploration and deployment.