基于层序地层格架的有机相研究进展

介绍了３个重要的有机相分类方案，并详细讨论了烃源岩有机相在层序地层格架中的分布特征和变化规律，有机相是沉积环境，有机质类型和成熟度的综合反映，烃源岩有机相主要受气候、陆源有机质产量、海相有机质产率，古氧化体制和海平面变化等多等多种因素的控制，其中产面变化对有机相有着最大复杂的影响，作为一种油气预测手段，层序地层学在有机相研究方面的应用将对油气田、煤田的勘探开发有着重要的作用。

STUDY ADVANCE OF ORGANIC FACIES AND ITS DISTRIBUTION IN SEQUENCE FRAME

Organic facies is the comprehensive reflection of depositional environments,organic matter types,and organic matter maturity.At present,it has been widely used to evaluate hydrocarbon source rocks.While organic facies of hydrocarbon source rocks is mainly controlled by weather,terrestrial organic matter productivity,marine organic matter productivity,ancient oxidzing regime,and sea level changes,among which the last one is the most complex.In this paper,three important organic facies classification schemes are introduced,and the distribution and changes of organic facies of hydrocarbon source rocks in a whole sequence stratigraphy frame are discussed in detail.As a means to forecast oil and gas,the application of sequence stratigraphy on research of organic facies will be very important for the exploration of oil,gas,and coal.