The glutenite reservoir rock of the fan delta facies is associated with a complex sedimentary environment and high heterogeneity, and by far the characteristics and controlling factors of the reservoir rock quality have not been well understood. By comprehensively investigating the lithofacies, petrology, physical properties and diagenesis of the Upper Wuerhe Formation of the Mahu Sag, the Junggar Basin, it is concluded that the Upper Wuerhe Formation develops three major groups of lithofacies, totally consisting of 11 sub-types, and reservoir rock properties of different lithofacies are greatly varied. This research shows that the lithofacies attributed to the tractive current and density current have well-sorted rock particles, low mud content, well-developed secondary dissolved pores, and thus high overall reservoir rock quality. On the contrary, the lithofacies based on debris flow and sheet flow, are observed with high mud content, suppressed development of intergranular and dissolved pores, and thus poor reservoir rock quality. The system tract controls the macro variation of the reservoir rock quality. The best quality is found in the highstand system tract, followed by those of the lake transgression and at last lowstand system tracts. The micro variation of the reservoir rock quality is determined by the mud content, rock particle size and dissolution. The muddy matrix mainly damages the pore connectivity, and presents the strongest correlation with permeability. The reservoir rock with concentrated particle sizes and well-sorted particles has quality better than those of reservoir rocks composed of excessively large or small particles. Dissolution effectively improves the storage capability of the reservoir rock, resulting in an average porosity increment by 4.2%.

扇三角洲相的砂砾岩储集岩具有复杂的沉积环境和非均质性，到目前为止，对储集岩质量的特征和控制因素尚不十分了解。综合研究准gar尔盆地麻湖凹陷上乌尔河组的岩相，岩石学，物性和成岩作用，可以得出结论：上乌尔河组发育了三大类岩相，共包括11个亚型。不同岩相的储层岩石性质差异很大。这项研究表明，归因于牵引电流和密度电流的岩相具有良好的岩石颗粒分类，较低的泥浆含量，发达的二次溶解孔隙，因此总体储层岩石质量较高。相反，观察到基于泥石流和薄板流的岩相具有高的泥浆含量，抑制了粒间和溶孔的发展，因此储集岩质量较差。系统域控制储层岩石质量的宏观变化。在高水位系统道中发现最好的质量，其次是湖泊海侵和最后的低水位系统道。储层岩石质量的微观变化取决于泥浆含量，岩石粒径和溶解度。浑浊的基质主要破坏孔隙的连通性，并表现出与渗透率的最强相关性。具有集中的粒径和良好分类的颗粒的储集岩的质量要好于由太大或太小的颗粒组成的储集岩的质量。