Chemometric methods as a tool to reveal genetic types of natural gases – A case study from the Turpan-Hami Basin, northwestern China

AbstractIn this study, we rediscuss genetic types of natural gases from the Turpan-Hami Basin using classic diagrams and chemometric methods. In comparison with classic diagrams, chemometrics is an improved method based on multi-parameter for natural gas classification. The natural gases were divided into three groups by the classic diagrams, but chemometric results show that they can be divided into four groups and two sub-groups. Furthermore, natural gases can be characterized genetically based on three characteristic geochemical parameters. Chemometrics improves the classification of natural gas in terms of optimizing the proportion of characteristic geochemical proxies genetically with the natural gases.