UPPER PALEOZOIC QUARTZ-SANDSTONE RESERVOIR DIAG ENESIS AND PORE EVOLVEMENT, EASTERN ORDOS BASIN
鄂尔多斯盆地东部上古生界石英砂岩储层成岩及孔隙演化

The results of the core observation and account and the systematic slice observation,together with the analysis of SEM,electron microprobe(EMP),energy spectrum,X-ray diffraction,cathode luminescence,isotopic compositions,indicate that dissolution,tuffaceous alteration kaolinization and microfissuring(microfraturing) can enhance reservoir quality,in contrast,they make the reservoir more compacter with mechanical compaction,chemical pressolution,cementation of SiO2,filling and emplacement of carbonate minerals,fragment clayization etc.