渝东武隆上寒武统孔隙结构特征及成岩作用研究

渝东武隆上寒武统地层，储集空间以次生孔隙为主，包括晶间孔、晶间溶孔、粒内溶孔、粒间溶孔、铸模孔、溶洞、裂缝。成岩作用是影响储集性能的主要因素。研究区成岩作用，依据其对孔缝的影响，以及本组地层特征可分为建设性成岩作用和破坏性成岩作用两种类型，前者包括白云石化作用、溶蚀作用、破裂作用；后者包括胶结作用、压实压溶作用、充填作用。

Porosity textures and diagenesis of the Upper Cambrian strata in Wulong, eastern Chongqing

The accommodation spaces of the Upper Cambrian strata in Wulong, eastern Chongqing consist dominantly of secondary porosity such as intercrystal pores, intercrystal solution openings, intragranular solution openings, intergranular solution openings, cast pores, caves and fissures. Diagenesis is considered as a principal factor affecting the reservoir capacity , and may be divided into two types: constructive and destructive. The former includes dolomitization, dissolution and fracturing while the latter comprises cementation, compression and pressure solution, and filling.