Generation and evolution of diamondoids in source rock

被引：16

作者：

Fang, Chenchen ^{[1
,2
]}

Xiong, Yongqiang ^{[1
]}

Li, Yun ^{[1
]}

Chen, Yuan ^{[1
]}

Tang, Youjun ^{[3
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Geochem, SKLOG, Guangzhou 510640, Guangdong, Peoples R China

[2] PetroChina Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China

[3] Yangtze Univ, Dept Geochem, Jingzhou 434023, Peoples R China

来源：

MARINE AND PETROLEUM GEOLOGY | 2015年 / 67卷

基金：

中国国家自然科学基金;

关键词：

Diamondoids; Extractable organic matter; Kerogen; Evolution characteristics; CRUDE OILS; DIFFERENT GENOTYPES; HYDROCARBON RATIOS; HYDROUS PYROLYSIS; THERMAL-CRACKING; ADAMANTANES; PETROLEUM; MATURITY; DIAMANTANES; BIODEGRADATION;

D O I：

10.1016/j.marpetgeo.2015.05.018

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Thermal maturation-related variations in the abundance and distribution of diamondoids in source rocks were investigated by thermal simulation experiments on extracts and kerogen obtained from a same marine shale, and by quantitative analysis of diamondoids within pyrolysates using highly sensitive and selective gas chromatography-triple quadrupole mass spectrometry (GC-MS-MS). The results indicate that diamondoids within the marine shale are generated mainly during 0.8%-1.7% EasyRo, generally deriving from extractable organic matter within source rocks, and are destroyed after 1.7% EasyRo to be entirely removed by ca. 3.0% EasyRo. Ternary plots of the relative distribution of diamondoids and bivariate diagrams for diamondoid parameters (e.g., DMA/MD vs. DMAI-1, and DMA/MD vs. TMAI-1) show systematic changes in diamondoids with increasing thermal maturity (expressed as EasyRo). (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：197 / 203

页数：7

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