对塔里木盆地不整合面下的碳酸盐岩成岩作用、成岩作用序列和孔隙特征的研究表明：（１）不整合面下的碳酸盐岩储集层所经历的成岩作用有胶结作用、溶蚀作用、白云石化作用、重结晶作用、压实作用、压溶作用、硅化及硅质充填作用、裂缝及其充填作用。其中胶结作用、压实作用、硅化及硅质充填作用是破坏孔隙的主要成岩作用，而溶蚀作用（特别是不整合形成时的大气淡水溶蚀作用）、白云石化作用、压溶作用、破裂作用是产生次生孔隙的主要成岩作用。（２）不整合面下的碳酸盐岩储集层进油期的孔隙全为次生型，主要的孔隙类型有晶间孔、晶间溶孔、胶结物溶孔、基质溶孔、溶洞、溶缝、缝合线。孔径一般为００１～１ｍｍ，溶洞直径为２～１０ｍｍ，孔隙度一般为２％～８％，局部高达１５％ Carbonate diagenesis, diagenetic sequence and pore features under the unconformity of the Tarim Basin indicate that: (i) carbonate reservoirs beneath the unconformity have cementation, cementation, Dolomitization, recrystallization, compaction, pressure solution, silicification and siliceous filling, fractures and filling. Among them, cementation, compaction, silicification and siliceous filling are the main diagenesis that destroy the pore, whereas dissolution (especially atmospheric freshwater dissolution during unconformity formation), dolomitization, pressure solution and fracture are The main diagenesis that produces secondary pores. (2) Carbonate reservoirs under the unconformity are all secondary in the oil-entering period. The main types of pores are intergranular pores, intergranular pores, cements dissolved pores, matrix dissolved pores, caverns , Soluble joints, sutures. Pore ​​size is generally 0  01 ~ 1mm, cave diameter of 2 ~ 10mm, porosity is generally 2% to 8%, up to 15% of the local 