Xing Shunquan, Jiang Hongqi. DIAGENESIS MODEL AND PORE EVOLUTION OF FELDSPAR-RICH SANDSTONE RESERVOIRS IN SONGLIAO BASIN[J]. 1990, 11(4): 351-360.DOI: 10.11743/ogg19900401.
The oil and gas reservoirs that are mainly composed of continental feldspar-rich sandstones in the Songliao Basin have a distinctive diagenesis model due to high geother-mal field of the basin.After the study of diagenetic indication for the sandstone reservoirs buried at the depth of 500-3200m based on thin section
X-ray diffraction
SEM
electronic probe
the uniform temperature and salinity of the gas-liquid inclusions in the overgrowth of qartz and the quantitative analysis of diagenetic minerals in cathodoluminescence
this pa-per sets up a diagenetic model of feldspar-rich sandstones
divided the diagenetic evolutioninto 3 stages and 5 phases such as early stage
the early and late phases of the middle stage
the early and late phases of the late stage
and then points out three zones of secondary pores.