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皖南奥陶—志留系暗色泥岩有机碳产状及其丰度讨论

石油实验地质

1989年 11卷第3期

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Title

DISCUSSION ON OCCURENCE AND ABUNDANCE OF ORGANIC CARBON OF THE ORDOVICIAN--SILURIAN DARK CLAYSTONE, SOUTHERN ANHUI

作者

杨长庚朱佩君葛万兴

Authors

Yang Changgeng Zhu Peijun Ge Wanxing

单位

地矿部石油地质中心实验室

Organization

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

摘要

为了正确评价高演化源岩的生油性能,对奥陶—志留系暗色泥岩作了较系统的镜下观察.认为高演化泥岩含有次生沥青,应从分析所得有机碳丰度剔除沥青含量.有机碳0.4～1.0%属盆地相沉积,为较好生油岩;有机碳小于0.4%属陆棚相沉积,为较差生油岩.

Abstract

In order to properly evaluate the oil potential in overmature areas, microscopic observations are made on Ordovician-Silurian dark claystones. It is considered that there are secondary asphalts in overmature claystones. The content of asphalts should be excluded from the analytical data of organic carbon. The rocks with organic carbon content ranging from 0.4-1.0% are good source rocks of basinal facies, and those below 0.4% are poor source rocks of continental shelf facies.

基金项目

DOI

https://doi.org/10.11781/sysydz198903241