四川盆地南北缘志留纪生物礁发育、类型多样，有点礁、灰泥丘、层状礁等。它们曾经历了多种成岩作用，其中主要有胶结作用、溶蚀作用、硅化作用以及白云化作用。由于构造运动简单，本区生物礁的成岩作用演化过程是从早期的海底成岩作用，经短时的大气淡水作用就进入埋藏成岩作用阶段，最后达表生暴露阶段。生物礁的原生孔隙以格架孔、体腔孔为主，并发育有不规则窗格孔、粒间孔及晶间孔等，次生孔隙为后期溶孔及溶缝。由于胶结作用发育，使本区生物礁的储集意义减小。 The Silurian reef in the north and south margin of the Sichuan Basin is characterized by a variety of reefs, stucco mounds and layered reefs. They have experienced a variety of diagenesis, which are mainly cementation, dissolution, silicification and the role of cloudiness. Due to the simple tectonic movement, the diagenesis of the reefs in this area evolved from the submarine diagenesis to the burial diagenesis stage through short-term atmospheric freshwater, finally reaching the stage of admiration. The primary pores of reefs are dominated by lattice pores and body cavity pores, with irregular panes, intergranular pores and intercrystalline pores. Secondary pores are later dissolved and dissolved. Due to the cementation, the significance of reservoir reef storage is reduced.