The Triassic Baikouquan Formation in Mahu slope area, Junggar Basin, attracted much attention of the reservoir sedimentologist. The difference of physical property in the sandy conglomerate reservoir is obvious, but its control mechanism has not been clear. According to divided into four types: Traction current sandy conglomerate facies (TCSCF), pebbly sandstone facies, sandstone facies and gravity flow sandy conglomerate facies (GFSCF). During burial, compaction effect in the GFSCF is sooner and stronger than that in the TCSCF. And in the process of continuous deep burial, porosity in the GFSCF is not decreasing significantly, but the permeability begins increasing. These show there are micro-cracks beginning to produce in GFSCF. The difference of the compaction effect cause that type of reservoir space in the TCSCF is mainly dominated by primary intergranular pores, and secondary pores and micro-cracks is the main reservoir space in the GFSCF. Finally, the physical property of the TCSCF is obviously better than that of the GFSCF, the former is the effective reservoir in the formation.
Han Denglin Li Lei Lian Lixia Zhu Yating Li Weifeng Yuan Xiaoguang Zhang Shuangyuan. Differentiation of diagenesis in sandy conglomerate reservoir ：A case study from the Triassic Baikouquan Formation in Mahu slope area，Junggar Basin[J]. Chinese Journal of Geology, 2017, 52(2): 428-439.