川东地区上石炭统碳酸盐岩成岩作用

综合应用扫描电镜、阴极发光、偏光显微镜及稳定同位素等技术手段，对川东地区上石炭统５００多个样品进行了系统观察、统计及分析。依据其对储集空间的作用性质，可以把研究工区各种沉积相的碳酸盐岩储层成岩作用划分为建设性成岩作用和破坏性成岩作用两种类型。根据成岩作用组合、成岩组构特征、成岩标志以及孔隙形成和演化规律，总结出四类成岩演化模式，即储集特性差别较大的储层对工区有利次生孔隙发育带的预测具有指导意义。

CARBONATE ROCK DIAGENESIS OF UPPER CARBONIFEROUS IN THE EAST OF SICHUAN PROVINCE

Five hundreds of carboniferous rock samples from the east of Sichuan province were systematically examined by means of techniques of scanning microscope, cathode luminescence, petrology, microscope and stable isotopes. The carbonate reservoir diagenesis of all kinds of sedimentary facies in the studying area can be divided into two types of constructive and destructive diagenesis. Four diagenetic evolution patterns are summarized on the basis of analyses on diagenetic assemblage, fabric feature of diagenesis, diagenetic marks and porosity formation and evolution sequence. These types of patterns are favourable to predict useful secondary porosity developing facies in the area.