Abstract

Some researches on the distribution of Carboniferous source rock in the Dinan uplift, Junggar Basin, has been clear that the Songkaersu Formation (C1sb) is relatively implement, but that of the Dishuiquan Formation (C1d) is still uncertain. The acknowledgment and conclusion of the hydrocarbon generation and gas generation capacity of C1d source rocks are fairly limited, and thus the contribution of this set of source rock to the natural gas in the southern Dinan uplift exists a certain dispute. In this paper, based on the predecessors’ research work, the fine-scale comparison of fingerprint characteristics between the two sets of source rocks in Carboniferous by using monomer hydrocarbon carbon isotope technique, and at the same time, the condensate oils which were associated with Carboniferous natural gas in this region were also compared in detail. As such, the contribution of Carboniferous C1sb and C1d source rocks was determined.

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