• 责任者：Xu Yongchang (Lanzhou Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Wang Xiaofeng
• 刊名：Petroleum Exploration and Development
• 出版年：2009
• 卷期：36(3)
• 关键词：低熟油 ; low-mature oil ; 煤成气 ; coal gas ; 吐哈盆地 ; Tu-Ha Basin
• 页码：p.408-412
• 图表：3 illus., 22 refs.
• 分类号：1003
• issnNo：ISSN1000-0747
• isbnNo：CN11-2360/TE

According to recent researches, the thermal evolution level of low-mature gas should be 0.4%≤Ro<0.8%. Low-mature gas can be identified through four characteristics, including carbon isotopic composition of methane and ethane, light hydrocarbon parameter, geological background and source rock. This paper demonstrates that the Urengoy gas field in west Siberian Basin and gas-bearing areas in the Turpan-Hami Basin belong to the type of low-mature gas, and points out that low-mature gas is mainly related to coal measures. Low-mature gas can be said to be an extension of coal-formed gas. China has great coal resources and the coal of Ro<0.9% accounts for more than 60%, suggesting that low-mature gas have a good prospect in China.