云南昆明盆地浅层天然气开发远景

昆明盆地天然气显示遍及各层，但浅层天然气主要赋存于第四系。气源主要来知第四系深灰、灰黑及黑色泥质岩和褐煤层，源岩有机质丰宽高，气源层处于还原－强还原环境。具良好的厌氧生化成气条件，经分析研究，计为该区天然气属甲烷型生物成因气。圈闭类型以岩性圈闭为主，处于凹陷与隆起之间的斜坡是天然气运移和聚集的最有利地带。盆地生储盖条件良好，资源量丰富。

Developing Prospect of Shallow Natural Gas in Kunming Basin, Yunnan

Natural gas in Kunming basin generally distributes in ever bed and section,but shallow gas nearly reserve in Quaternary. Gas sourse rock that form gas almost are deep grey, grey black and black mudrock, siltstone and brown coal in Quaternary. The abundance of organic matter in them is high. They lies from reducing environment to strong reducing ones, it has good conditions for biochemistry action in anaerobic environment. The author draws a conclusions by analysis: gas in basin is libratural gas; type of main trap is lithic trap; the slop between depression and salient zone is the best one for gas moving and gathering anymore. The conbination of hydrocarbon sourse rock , reservior ones and caprock is fine.