GEOCHEMICAL CHARACTERIZATION OF MIXING NATURAL GAS IN KEKEYA FIELD, TARIM BASIN, CHINA
柯克亚油气田混合来源天然气的地球化学特征

This paper is mainly concentrated on the geochemical characteristics and origin of gas of Kekeya field in the Tarim basin, NW China. Many dispute viewpoints about origin of gas and condensate existed although the field has been found in 1977. This study shows that Permian mudstone is main source rock of oil and gas. The carbon isotopic value of natural gases in kekeya region are more heavy than that of other natural gases in Tarim basin which are mainly derived from lower Palaeozoic marine source rocks. In ...