Indeed, the rush for shale assets in Europe has been led by many of the big firms that at first overlooked unconventional gas in America. 事实上，在欧洲的页岩资产热潮中起主导作用的正是一度忽视美国非常规天然气的大公司。
As a kind of abnormal gas accumulation, deep basin gas is trapped in the particular geological conditions and has particular reservoir forming principle and distributed regularity. 摘要深盆气是指在特殊地质条件下形成的，具有特殊圈闭机理和分布规律的非常规天然气藏。
