富有机质烃源岩中显微组分分离及地球化学特征研究

许锦; 张彩明; 谢小敏; 芮晓庆

doi:10.11781/sysydz201806828

富有机质烃源岩中显微组分分离及地球化学特征研究

doi: 10.11781/sysydz201806828

许锦^1,2,
张彩明^1,2,
谢小敏^1,2,
芮晓庆^1,2

1. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126;
2. 中国石化油气成藏重点实验室, 江苏无锡 214126

基金项目:

“十三五”国家重大专项“海相碳酸盐岩油气资源潜力评价与勘探新领域”（2017ZX05005-001）资助。

详细信息

作者简介:
许锦(1981-),女,硕士,高级工程师,从事油气地球化学研究。E-mail:xujin.syky@sinopec.com。

中图分类号: TE135
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- 被引次数: 0
出版历程
- 收稿日期: 2017-09-26
- 修回日期: 2018-09-17
- 刊出日期: 2018-11-28

Separation of macerals in organic-rich source rocks and their geochemical characteristics

1. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China;
2. SINOPEC Key Laboratory of Petroleum Accumulation Mechanisms, Wuxi, Jiangsu 214126, China

摘要

摘要: 利用干酪根富集、液氮冷冻-室温下解冻和重液中加入乙醇等方法，解决了烃源岩中显微组分分离中存在的有机质丰度低、脆性差和亲油性强的问题，初步建立了烃源岩中显微组分的分离方法。运用该方法从云南禄劝和吉林桦甸等地区的样品中成功制备出葡萄球藻、层状藻、角质体和镜质体等单种显微组分，并对上述显微组分和手选出的树脂体进行岩石热解、红外光谱和活化能分析。结果表明：壳质组的生烃能力较强，生烃范围窄；不同显微组分结构差别较大，产物也不同；镜质体生烃能力相对于壳质组组分非常低，生烃范围宽，且产物以气为主；显微组分的密度与其生烃能力存在一定的负相关性。
- 岩石热解 /
- 红外光谱 /
- 活化能 /
- 显微组分 /
- 生烃能力 /
- 富有机质烃源岩
Abstract: Due to the low abundance, poor brittleness and strong lipophilicity of organic matter in source rocks, kerogen enrichment, freezing in liquid nitrogen-thawing at room temperature and adding ethanol to heavy liquid were applied during the separation of macerals in source rocks. The macerals of botryococcus, alginite, cutinite and vitrinite were successfully separated from source rocks in the Luquan area of the Yunnan Province and the Huadian area of the Jilin Province. Rock-Eval, infrared spectroscopy and activation energy analyses indicated that the hydrocarbon generation capacity of the exinite group is strong and the hydrocarbon generation temperature range is narrow. Different macerals have different structures and generation products. Compared with the exinite group, the hydrocarbon generation capacity of vitrinite is lower, the generation temperature range is wider and the products are dominated by gas. There is a negative correlation between maceral density and hydrocarbon generation capacity.
- Rock-Eval /
- infrared spectroscopy /
- activation energy /
- macerals /
- hydrocarbon generation capacity /
- organic-rich source rocks

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