Abstract:

From the Sinian to the Mesozoic the tectonic evolution in the western part of Hubei and the eastern part of Chongqing experienced three periods, i.e. the platform, the basin and the fold with fault. In this evolutionary process, several types of the tectonic format, i.e. the basal thrusting, the squeezing block, the sheeting block and the detachment-type thrusting fold etc, had been formed. Ultimately, several types of the oil-gas pools including the tectonic type, the stratigraphic type and the composite type had been formed in these various tectonic formats. The spatial distribution of these oil-gas pools was characterized by the zoning in west-east direction as well as the partitioning in the south-north direction. The study on the spatial law of  oil-gas pools was importantly meaningful for the future oil-gas exploration.

Key words: spatial distribution, entrapment type, the western part of Hubei and the eastern part of Chongqing