Mudstone diagenesis: Research advances and prospects

Abstract

Driven by the shale oil and gas revolution，important advances have been made in mudstone diagenesis， which is a frontier in sedimentology and petroleum geology. Mudstone diagenesis of not only controls the generation and migration of oil and gas， but also has important influence on the composition， microstructure， reservoir physical and mechanical properties. The research status and prospects of the study were documented. At present， the research advances of mudstone diagenesis is mainly reflected in 4 aspects： （1）diagenetic evolution of inorganic minerals； （2）diagenetic evolution of organic matter and the development of organic matter-hosted pores； （3）driving mechanism and physical response of mudstone diagenesis； （4）effects of diagenesis on mechanical properties of mudstone. The study of mudstone diagenesis will continue to complement and improve the basin diagenesis system， and provide theoretical support for the exploration and development of unconventional oil and gas resources. The study of mudstone diagenesis system at different scales under the control of multi-field coupling indicates a profound and extensive development prospect.