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我国碳酸盐岩经历了多期次、多种类型的成岩作用。在各种成岩作用中,溶解、白云石化、压溶、破裂等作用,使原岩产生大量次生孔隙,从而改善了其储集性,可称之为建设性成岩作用;而重结晶、胶结和压实等成岩作用,因为降低了碳酸盐岩的原生和次生孔隙度,称之为破坏性成岩作用。两者的综合效应控制和影响了碳酸盐岩储集性的优劣。本文搜集了大量资料,并借助薄片分析,详述了碳酸盐岩成岩作用对其储集性能的影响。
Our carbonate rocks have undergone multiple periods and multiple types of diagenesis. In a variety of diagenesis, dissolution, dolomitization, pressure dissolution, rupture and other effects, the original rock to produce a large number of secondary pores, thereby improving the reservoir, which can be called a constructive diagenesis; and recrystallization, cementation And compaction and other diagenesis, as reduced carbonate primary and secondary porosity, called destructive diagenesis. The combined effects of both control and influence the pros and cons of carbonate reservoir. In this paper, a large amount of data is collected, and the effect of carbonate diagenesis on reservoir properties is described in detail by means of thin-slice analysis.