石油实验地质2016，Vol.38Issue(4)：466-472,7.DOI:10.11781/sysydz201604466
川东南志留系龙马溪组页岩沥青反射率和笔石反射率的应用
Application of bitumen and graptolite reflectance in the Silurian Longmaxi shale, southeastern Sichuan Basin
摘要
Abstract
Graptolites with clear morphology and pore⁃filling amorphous bitumen are abundant in the Lower Silurian Longmaxi shales from the southeastern Sichuan Basin. It is very necessary to distinguish them exactly for thermal maturity research in this area. Reflectance measurements of the Longmaxi shales from several boreholes have re⁃vealed that graptolite reflectance has a better consistency on regional distribution than bitumen reflectance. Grapto⁃lite reflectance is more than 3.0%, which is a little bit higher than bitumen reflectance, and gradually increases from southwest to northeast. The equivalent vitrinite reflectance based on graptolite reflectance is more than 2.0%, indicating that the Longmaxi shales from the southeastern Sichuan Basin are over⁃mature. However, the correlation between graptolite reflectance and equivalent vitrinite reflectance is uncertain yet, and needs further study.关键词
沥青反射率/笔石反射率/页岩/龙马溪组/川东南Key words
bitumen reflectance/graptolite reflectance/shale/Longmaxi Formation/southeastern Sichuan Basin分类
能源科技引用本文复制引用
仰云峰..川东南志留系龙马溪组页岩沥青反射率和笔石反射率的应用[J].石油实验地质,2016,38(4):466-472,7.基金项目
国家自然科学基金“古生界页岩含气性原生有机质控制作用研究”（ U1663202）资助。 （）
