热分析技术在石油地质中的应用——划分未成熟干酪根类型和预测油气资源的DTG法

CONDENSATE ANALYSIS BY GAS CHROMATOGRAPHY

钱吉盛 陈一平

Qian Jisheng Chen Yipin

中国科学院兰州地质研究所

Lanzhou Geological Institute, Academia Sinica

目前,对干酪根结构的研究和类型的划分,方法较多,这些方法在不同程度上均取得了大量的基础资料,但就其研究效果和深入程度来说,则各不相同。本文主要在这些研究的基础上,以DTG曲线为依据,对干酪根有机质热分解反应的全过程进行系统研究。

Under certain selected experimental conditions, the authors study the whole process of thermal degradation of kerogens. Meanwhile, based on the evidence of DTG curves, the analyses of mixed degree of organic matter from different sources and the classification of kerogen types are carried out. With increasing temperature, the instantaneous reactions composing a DTG curve in releasing sequence of decomposed products can be taken to some extent as a modelling alteration profile of organic matter in geological bodies. Moreover, the weight lost in the whole process of thermal degradation of organic matter can be used to calculate the theoretical oil and gas productivities in various evolutional stages. It also can be used to assess oil/gas resources in combination with geological data.

https://doi.org/10.11781/sysydz198601084