地质通报2025，Vol.44Issue(2)：220-231,12.DOI:10.12097/gbc.2023.09.035
琼东南盆地松西凹陷始新统油页岩地球化学特征及生烃潜力
Geochemical characteristics and hydrocarbon generation potential of Eocene oil shale in Songxi Sag,Qiongdongnan Basin
摘要
Abstract
[Objective]Recently,a set of thick Eocene oil shale was drilled in Songxi Sag,which is the first time the oil shale was drilled in Qiongdongnan Basin.In order to implement the hydrocarbon generation potential of the Eocene oil shale and promote further exploration in songxi sag,Qiongdongnan Basin.[Methods]this article is based on drilling records,elemental assays and a series of geochemical tests to study the characteristics and formation environment of oil shale and predict the resource potential of this oil shale.[Results]The analysis results show that the average Total Organic Carbon(TOC)of this set of oil shale was 3.33%,the average pyrolysis hydrocarbon potential(S1+S2)was 22.2 mg/g,and the average Hydrogen Index(HI)was 606 mg/g TOC.The sedimentary environment of this oil shale is a warm semi-humid reduced freshwater lake environment,which has the characteristics of mixed input of lower aquatic organisms and higher terrestrial plants.[Conclusions]It shows that the oil shale has high organic matter abundance,good type and high paleoproductivity,which is a good to high-quality source rock.Its crude oil resources are about 41.4 million tons,with huge potential for crude oil resources.Both conventional oil and gas and shale oil have great exploration potential.关键词
油页岩/生烃潜力/生物标志化合物/松西凹陷/琼东南盆地Key words
oil shale/hydrocarbon generation potential/biomarker/Songxi Sag/Qiongdongnan Basin分类
地质学引用本文复制引用
汪紫菱,宋瑞有,邓孝亮,贺礼文,雷明珠..琼东南盆地松西凹陷始新统油页岩地球化学特征及生烃潜力[J].地质通报,2025,44(2):220-231,12.基金项目
中海油"十四五"重大科技项目《海上深层/超深层油气勘探技术》(编号:KJGG2022-0404) （编号:KJGG2022-0404）
