摘要
岩石中有机碳含量是研究生油岩的重要基础指标,它的准确程度直接影响其它地化指标及生油指标的准确程度,影响对油气资源的评价。本文对分析有机碳的干烧氧化重量法的有关步骤进行了实验研究。研究表明,空气中的二氧化碳对岩石样品中的有机碳含量有很大影响。样品在空气中放置的时间越长,有机碳的含量就越高。而把样品放入干燥器内密封存放,所测有机碳含量比较稳定,可为油气资源评价提供可靠依据。
Organic carbon content of a rock is an important parameter in source rock study. Its accuracy directly affects the accuracy of other geochemical indexes and the evaluation of petroleum resources. This paper studies the gravimetric method based on burning-oxidation and the relevant procedures in organic carbon extent analysis. It is found that the carbondi-oxide in the air has a great influence on the organic carbon content of the rock sample. The longer the sample is exposed to the air, the higher is the organic carbon content. The determined organic carbon content is relatively-constant when the sample is put into a desiccator and sealed off.
出处
《石油大学学报（自然科学版）》
CSCD
1990年第5期126-131,共6页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
岩石
生油岩
样品
有机碳
Rock sample
Organic carbon content
Oxygenize method
Gravimetric analysis
