镜质体反射率抑制的多元影响因素及相关校正方法综述
A Review of the Multiple Influencing Factors of Vitrinite Reflectance Suppression and the Related Correction Methods
摘要: 镜质体反射率(Ro)是沉积有机质热成熟度评价中应用最广泛的指标之一，在油气勘探中具有重要意义。然而，近年来“镜质体反射率抑制”现象引起了广泛关注，即测得的Ro值显著低于其他成熟度参数所指示的水平，从而造成成熟度判断偏差，进而影响烃源岩评价的准确性。本文系统梳理了镜质体反射率抑制的研究进展，从有机质类型、镜质组组成、沉积环境、成岩演化过程及实验技术等方面，分析了其主要影响因素。同时，总结了常见的校正方法，包括镜质体显微组构分析、拉曼光谱、热解参数对比及多指标联合校正等。研究表明，反射率抑制是一种多因素耦合的复杂现象，准确识别与合理修正需结合具体地质背景与综合技术手段。本文对镜质体反射率抑制的机理与校正路径进行了深入探讨，为非常规油气系统中热演化程度的准确判定提供理论支撑。
Abstract: Vitrinite reflectance (Ro) is a widely applied thermal maturity indicator in sedimentary organic matter studies, serving as a key parameter in hydrocarbon exploration. However, in recent years, the phenomenon of “vitrinite reflectance suppression” has attracted widespread attention. The measured Ro values are significantly lower than the levels indicated by other maturity parameters, which leads to deviations in maturity assessment and consequently affects the accuracy of source rock evaluation. This paper systematically reviews current research on the causes of Ro suppression, focusing on the effects of organic matter type, maceral composition, sedimentary setting, diagenetic processes, and laboratory procedures. Furthermore, it discusses correction methods such as textural analysis of vitrinite, Raman spectroscopy, comparative pyrolysis techniques, and integrated multi-parameter methods. The findings suggest that suppression is controlled by multiple interrelated geological and experimental factors, and accurate identification and rational correction require the integration of specific geological background and comprehensive technical means. This paper delves into the mechanism of vitrinite reflectance suppression and the pathways for its correction, providing a theoretical underpinning for the accurate determination of thermal maturity in unconventional oil and gas systems.
文章引用：王仕东, 郑静文. 镜质体反射率抑制的多元影响因素及相关校正方法综述[J]. 矿山工程, 2025, 13(4): 637-644. https://doi.org/10.12677/me.2025.134071

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