NATURAL GAS DEPOSIT FORMATION GEOCHEMISTRY OF AKMOMU GAS FIELD KASHI SAG IN TARIM BASIN
喀什凹陷阿克莫木气田天然气成藏地球化学

The unique discovered naturl gas deposit in Kashi sag is Akemomu depostt represented Dy Ake 1 well. Therefore, it is based on the congregating analysis of Ake 1 well natural gas to research the formation geochemistry of this sag. For this purpose, we use multiple analytic methods analyzing the natural gas of Ake 1 well, at the same time we make a series of gas production experiments with multiple kinds of source rock by using the thermal simulation method. Then we compare the thermal simulation gas and the natural gas, considered that the nature gas of the well is dry gas derived from the postmature source rock of carboniferous-permian round about the well. On the basis of organic inclusion filling analysis and autogeny illites age, combine with sediment and structural evolution analysis, we indicate that the natural gas is a result of late petroleum deposit formation stage, staggered congregated, mainly congregated the gas that produced in late Tertiary quaternary period.