KINETIC MODEL OF QUARTZ CEMENTATION AND ITS APPLICATION

Quartz cementation is one of the most important diagenetic process. The quartz overgrowth order obtained from observation of thin section often used to determine the diagenetic stage of reservoir rocks. In this article, we established a kinetic model of quartz cementation, in which temperature history, reaction time, detrital mineralogy, grain size and grain coating abundance were all considered. The model can be used to simulate the volume percentage of quartz cementation and the porosity loss during the diagenetic process of siliciclastic reservoir rocks. This has great significance for quantitative study of diagenesis and reservoir description. At last, the kinetic modeling of quartz cementation was successfully applied to the study of reservoirs in Wangjiatun area of Daqing oilfield.