Geological reserves of Xushen gas field discovered in Daqing exploration area exceed 100 bcm

the biggest among the volcanic gas reservoirs in China so far.The discovery of Xushen gas field had experienced several stages

including initial exploration

discovery of small structural gas reservoirs

and discovery of large lithologic gas reservoirs.Xujiaweizi fault depression has ideal source rocks and well-developed

volcanic reservoirs

which together with regional seals form vertically excellent source-reservoir-cap rock combinations

thus is quite favorable for the formation of large gas fields.