源岩活化能分布最小值与有机质成熟度的关系

Relationship of least distribution values of activation energy of source rocks and organic matter maturity

提出了一种确定源岩中干酪根活化能分布最小值的方法,并通过东营凹陷南斜坡东段沙四段源岩的动力学特征研究,发现源岩活化能分布最小值与有机质成熟度之间没有明显的正相关关系,而可溶有机质抽提后的源岩活化能分布最小值与有机质成熟度之间存在较为明显的线性正相关关系。

In this paper, the authors put forword a method how to determine the least values of activation energies distribution of kerogen in source rocks. Through the research of kinetics characteristics of source rocks gathered from the south slope of the Dongying depression in China, the authors discover that there is a good positive correlation between the least values of activation energies distribution and the organic matter maturity in source rocks after the soluble organic matter being extracted . If the soluble organic matter is not extracted from the source rocks,the positive correlation will be not brought out.