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塔中地区碳酸盐岩储层以石灰岩为主,次为白云岩,原生基质孔隙大多不发育,多为后期次生改造(构造作用、溶蚀作用)形成的溶洞和裂缝。从成因上看,储层类型主要有礁滩型、风化壳型和内幕白云岩型3大类。针对碳酸盐岩储层横向变化大、非均质性强、成藏条件复杂的特点,深入分析了礁滩型、风化壳型和内幕白云岩型等不同类型碳酸盐岩储层的地震响应特征,运用了叠前、叠后多种地震资料处理技术提高资料的品质,采用叠前、叠后多种技术手段综合预测了塔中地区奥陶系碳酸盐岩储层的分布,取得了明显效果,指导了碳酸盐岩油气藏的勘探。
The carbonate rocks in Tazhong area are dominated by limestone and secondary dolomite. Most of the primary matrix pores are undeveloped, which are mainly karst caves and fractures formed by secondary tectonics and dissolution. From a genetic point of view, the main types of reservoirs are reef beach type, weathering shell and insider dolomite type three categories. In view of the characteristics of large lateral variation of carbonate reservoirs, strong heterogeneity and complex reservoir forming conditions, the earthquakes of different types of carbonate reservoirs such as reef beach, weathering crust and interior dolomite are analyzed in depth Response characteristics, a variety of seismic data processing techniques are used to improve the quality of the data. Prestack and post-stack techniques are used to comprehensively predict the distribution of Ordovician carbonate reservoirs in the Tazhong area. Obvious effect, directed the exploration of carbonate reservoirs.