Characteristics of Shale Reservoirs in the Permian Fengcheng Formation, Hashan Region

The Permian Fengcheng Formation is an important hydrocarbon source rock development sequence and exploration sequence in the Junggar Basin. The Hashan tectonic belt, located on the northwestern margin of the Junggar Basin, is a large-scale thrust nappe superposed structure. Having undergone multiple tectonic movements and tectonic uplift and denudation, it has lost the stratigraphic distribution characteristics of a foreland basin. The Fengcheng Formation developed on multiple thrust tectonic steps, resulting in difficulties in stratigraphic correlation and unclear understanding of the distribution characteristics of the original sedimentary system and the development characteristics of favorable reservoirs. Therefore, clarifying the distribution laws and genesis of diagenesis and establishing a reservoir-forming model for high-quality reservoirs are of great significance for the effective sedimentary reservoir mechanism and the prediction of favorable gas-bearing areas in the study area.