泥岩成岩作用研究进展与展望

Mudstone diagenesis:Research advances and prospects

泥岩成岩作用研究在页岩油气革命的推动下取得了一系列重要进展,已成为沉积学和石油地质学研究的一个前缘领域。泥岩成岩作用不仅控制着油气的生成和运移,同时对物质组成、微观结构、储层物性和力学性质都具有重要影响。本文围绕这一领域,阐述了国内外相关研究现状,展望了未来的发展趋势。当前泥岩成岩作用研究进展主要体现在4个方面:1)矿物成岩演化;2)有机质成岩演化与有机质孔的发育;3)泥岩成岩作用的驱动机制及其物性响应;4)泥岩成岩作用对岩石力学性质的影响。泥岩成岩作用研究将不断补充完善盆地成岩作用系统,并继续为非常规油气资源的勘探和开发提供理论支撑。多场耦合控制下不同尺度泥岩成岩作用系统研究预示了深远和广泛的发展前景。

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.