关键词: 柴达木盆地, 天然气, 资源潜力, 油气勘探

Abstract: Qaidam Ba sin is the fourth largest gas-bearing region in China, of which the natural gas can be classified into oil-type gas, coal-type gas and biogas according to the carbon and hydrogen isotopic index. There are three suites of gas-bearing systems developed in the basin including the oil-type gas systemin the northwestern area, the coal-type gas systemin the northern margin, and the biogas systemin the eastern area. Based on the research on the basic characteristics of the natural gas in the basin and the analysis of its resources potential and exploration degree, the thinking for next exploration is proposed as òputting the foothold on biogas and making a breakthrough in pyrolysis ga s. It is suggested that the water-soluble gas and shallow gas in the eastern region and the pyrolysis gas in the northwestern region be the key targets for exploration

Key words: Qaidam Basin, natural gas, resources potential, hydrocarbon exploration