Abstract:

This paper expounds some characteristics of China's gas pools from stratigraphic sequences,lithologic characters of reservoirs,and types of gas pools and basins.They are given as follows.1.The pool-types discovered in China are mostly anticlines and then fault blocks and lithological variations.In addition,there are a little of synclines,reefs and weathered crusts.2.The proved gas reserves in China are 30.7% in Triasic,21.7% in Tertiary,20.2% in Permian,and 16.2% in Sinian system.3.The proved gas reserves occur mainly in intracratonic polycyclic basins,intracratonic rift basins,back-arc basins and intermountainous basins.The first two are make up about 93% of the total reserves.4.67.9% and 32.1% of proved gas reserves are contained in carbonates and clasolites respectively.