碳酸盐岩中酸解气态烃的成因及地化意义解析

THE ORIGIN AND THE GEOCHEMICAL SIGNIFICANCE OF THE ACIDOLYTIC HYDROCARBON GAS IN CARBONATE ROCKS

叶军 曹慧缇

Ye Jun Cao Huiti

地质矿产部石油地质中心实验室

Central Laboratory of Petroleum Geology, Ministry of Geology and Mineral Resources

本文主要对碳酸盐岩中酸解气态烃的成因及地化意义进行研究。研究表明,酸解气态烃系属赋存于碳酸盐岩矿物中的有机烃类气体,成因复杂,影响因素较多,其中以成岩后生变化的影响最为显著。另外,根据对其地化特征的分析和研究,(1)酸解气态烃的湿度与生油岩有机质演化程度有关:(2)酸解气态烃的含量既与生油岩有机质的丰度和演化程度无关,也与生油岩的岩性、结构无关。这些特征进一步揭示了酸解气态烃受控于多种因素的本质。

The origin of the acidolytic hydrocarbon gas in carbonate rocks and its geochemical significance are studied in this paper. The study shows that aci-dolytic hydrocarbon gas represents the gas bound in carbonate minerals. Its origin is rather complicated and is affected by various factors among which epigenesis is the most outstanding one. In addition, according to the analysis and the study of its geochemical characteristics, the content of the acidolytic hydrocarbon gas bears no relation to the abundance and the maturity of the organic matter of the source rock, as well as to the lithology and the texture of the source rock. These facts underline the complex nature of the acidolytic hydrocarbon gas.

https://doi.org/10.11781/sysydz198702187