湘中南龙潭煤系煤岩显微组分的有机地球化学特征与生烃潜力

HYDROCARBON-GENERATING POTIENTIAL OF DIFFERENT MICROMACERALS FROM CAOLS OF LONTAN FORMATION IN MIDDLE-SOUTHERN HUNAN PROVINCE

陈纯芳 张爱云 曲美艳

Chen Chunfang Zhang Aiyun Qu Meiyan

中国地质大学, 北京, 100083 2. 国土资源部海洋地质研究所, 青岛, 266071

China University of Geosciences, Beijing 100083 2. Institute of Marine Geology, MNLR, Qingdao 266071

本文通过对湘中南龙潭煤系煤岩显微组分的有机地球化学特征和生烃潜力的综合研究,指出其气、肥煤中的壳质组是具有很高的生烃潜力的生烃母质;镜质组,特别是发荧光的基质镜质体具有较高的生烃潜力;惰质组的生烃潜力最小,且以生气为主,但其中孔隙发育,对于烃的储集具有重要意义。

Based on research of coal petrology and organic geochemistry,hydrocarbon-generating potiential of different coal micromacerals which separated from gas coal and fat coal of Longtan formation in the middle-southern area of Hunan province has been discussed.The study suggested that exinite was the best maceral for generating hydrocarbon,vitrinite took the second place.Both of them are major hydrocarbon-generating macerals,parameters of Bitumen "A" and ROCK-EVAL supported that they can generate oil and gas.Inerlinite is by no means simply a bad source maceral for generating hydrocarbon,it can also produce some gas and its hydrocarbon-generating potiential is decided by the evolutionary stage of coal and the other macerals associated with it.However,its high porosity may be a good reservoir for hydrocarbon.

国家自然科学基金(49572130)资助项目内容之一

https://doi.org/10.11781/sysydz199804417