Gas reservoirs can be classified in light of their accumulation mechanisms into six types: water-sealed gas, hydrate, dissolved gas, conventional entrapped gas, capillary gas and adsorbed gas.

• 气藏可以按照其成藏控制因素划分为六种类型:水封气,水合物,溶解气,常规圈闭气,毛细管气,吸附气。