 The kinshengku formation in the sandjaus sag is rich in organic matter and has a high potential for hydrocarbon generation. It contains interparticle pores, interparticle pores, and organic matter pores which are all conducive to hydrocarbon production. The shales have a H3-type slit pore structure with large pores of 100 to 200 nanometers and 12 micrometers making up most of the total pore volume. Mineral composition, abundance of organic matter, thermal evolution degree, and diagenesis affect the pore structure of the formation. This article was authored by Surang Zhang, Sungtao Wu, Rukai Zhu, and others.