THE CURRENT SITUATION AND DEVELOPING TENDENCY OF THE STUDY ON DIAGENESIS

With the development of oil and gas exploration,the study on diagenesis has made considerable progress both in theory and in practice.In this paper,a summary of the advances in the study on diagenesis was given,mainly including the mechanism of organic matter thermal degradation and the formation of secondary pores,the determination of the diagenetic reaction thermodynamic equilibrium condition and state by using the chemical thermodynamic equilibrium theory,the petroleum geologic analysis of integrating basin fluid,temperature and pressure with the basin evolution history,the combination of contemporary sequence stratigraphic study with diagenesis.The future developing trends of diagenesis were put forward in this paper,including continue making researches on diagenetic experiment and thermodynamic analogy,deepening the study of diagenesis in a new way of basin-diagenesis system analysis,studying the source of formation water and its influences upon diagenesis.