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以南堡凹陷周边凸起地区碳酸盐岩岩性与物性分析为基础,通过与南堡凹陷周边地区对比、野外露头剖面观测、单井岩心观察,样品测试等手段,对其成岩作用、孔隙类型、孔隙演化及其特征进行了详细研究。研究区的成岩作用分为3类:建设性成岩作用、破坏性成岩作用以及双重性成岩作用。研究区储层中的孔隙演化经历了早期原生孔隙形成与收缩和中、晚期次生缝、孔、洞的发育与充填两个阶段,碳酸盐岩原生孔隙消失殆尽,次生孔隙为碳酸盐岩古潜山的主要储集空间,次生孔隙的发育程度取决于3种成岩作用的相对强度。
Based on the analysis of lithology and physical property of carbonate rocks in the raised area around Nanpu Sag, through comparison with the surrounding area of Nanpu Sag, field outcrop profile observation, single well core observation and sample test, the diagenesis, porosity Type, pore evolution and its characteristics were studied in detail. Diagenesis in the study area is divided into three categories: the construction of diagenesis, destructive diagenesis and dual diagenesis. The evolution of pores in the reservoirs of the study area underwent two stages of formation and contraction of early primary pores and development and filling of secondary seams, pores and holes in the middle and late stages. Carbonate primary pores disappeared and secondary pores were carbon The main reservoir space of acid salt buried hill and the degree of secondary porosity development depend on the relative intensities of three diagenetic processes.