论文部分内容阅读
湖北随州上震旦统灯影组为一套由深变浅的碳酸盐岩沉积序列。在薄片观察的基础上，利用碳、氧同位素、微量元素和包裹体古盐度分析等资料，详细研究了该区白云岩主要成岩作用类型，如白云石化作用、胶结作用、压实压溶作用等。研究表明，该区局限台地相白云岩主要由毛细管浓缩白云石化作用形成；台地边缘浅滩相白云岩由混合水白云石化作用形成；深水斜坡盆地边缘相白云岩由浅水相区高盐度卤水沿斜坡向下流动过程交代灰泥而形成。最后对该区储集空间类型和储层类型进行了分析和评价。
The Upper Sinian Dengying Formation in Suizhou, Hubei Province is a set of sedimentary sequences from deep to shallow carbonate rocks. Based on the observations of thin sections, the main diagenetic types of dolomites in this area are studied in detail by using carbon and oxygen isotopes, trace elements and paleo-salinity analysis of inclusions such as dolomitization, cementation, compaction and pressure-dissolving Wait. The study shows that dolostone is mainly formed by capillary condensation dolomitization in the area; dolomite of marginal facies dolomite is formed by mixed dolomitization; dolomite of the marginal facies of deep-water slope basin is composed of high-salinity brine in shallow water area The downward flow process to explain the formation of stucco. Finally, the reservoir space types and reservoir types in this area are analyzed and evaluated.