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  2. 地质与地球物理研究所
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  4. 中国科学院新生代地质与环境重点实验室
Diamondoids and thiadiamondoids generated from hydrothermal pyrolysis of crude oil and TSR experiments

文献类型：期刊论文

作者Peng, Yanyan1,2,3; Cai, Chunfang1,2,3,4; Fang, Chenchen6; Wu, Liangliang5; Liu, Jinzhong5; Sun, Peng4; Liu, Dawei1,2,3
刊名SCIENTIFIC REPORTS
出版日期2022-01-07
卷号12期号:1页码:18
ISSN号2045-2322
DOI10.1038/s41598-021-04270-z
英文摘要Diamondoid compounds are widely used to reflect thermal maturation of high mature source rocks or oils and oil cracking extents. However, diamondoids and thiadiamondoids were demonstrated to have newly been generated and decomposed in our hydrothermal pyrolysis of crude oil and TSR experiments. Our results show that adamantanes and diamantanes are generated primarily within the maturity range 0.48-2.1% and 1.2-3.0% EasyRo, respectively. Their formation is enhanced and the decomposition of diamantanes obviously lags at elevated temperatures compared with anhydrous experiments. MDI, EAI, DMAI-1, DMDI-2 may serve as reliable maturity proxies at>ca.1.0% EasyRo, and other isomerization indices (TMAI-1, TMAI-2 and DMAI-2) are effective for the highly mature organic matter at EasyRo>2.0%. The extent of oil cracking (EOC) calculated from the broadly used (3-+4-) MD method (Dahl et al. in Nature 399:54-56, 1999) is proven to overestimate, especially for highly cracked samples due to the new generation of (3-+4-) MD. Still, it can be corrected using a new formula at<3.0% EasyRo. Other diamondoid-related indices (e.g., EAI, DMDI-2, As/Ds, MAs/MDs, DMAs/DMDs, and DMAs/MDs) can also be used to estimate EOC. However, these indices cannot be applied to TSR-altered petroleum. TSR is experimentally confirmed to generate diamantanes and thiaadmantanes at 1.81% EasyRo likely via direct reactions of reduced S species with hydrocarbons and accelerate the decomposition of diamantanes at>2.62% EasyRo compared with thermal chemical alteration (TCA). More studies are needed to assess specific mechanisms for the formation of thiadiamondoids under natural conditions.
WOS关键词THERMOCHEMICAL SULFATE REDUCTION ; PALEOZOIC PETROLEUM POOLS ; TARIM BASIN ; SMACKOVER FORMATION ; HYDROCARBON RATIOS ; THERMAL-STABILITY ; HYDROUS PYROLYSIS ; ORGANIC-MATTER ; SULFUR ; ADAMANTANES
资助项目National Natural Science Foundation of China[41730424] ; National Natural Science Foundation of China[4181101560]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000740510500248
出版者NATURE PORTFOLIO
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/104004]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Cai, Chunfang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Yangtze Univ, Minist Educ, Key Lab Explorat Technol Oil & Gas Resources, Wuhan 430100, Hubei, Peoples R China
5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem SKLOG, Guangzhou 510640, Peoples R China
6.PetroChina Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Yanyan,Cai, Chunfang,Fang, Chenchen,et al. Diamondoids and thiadiamondoids generated from hydrothermal pyrolysis of crude oil and TSR experiments[J]. SCIENTIFIC REPORTS,2022,12(1):18.
APA Peng, Yanyan.,Cai, Chunfang.,Fang, Chenchen.,Wu, Liangliang.,Liu, Jinzhong.,...&Liu, Dawei.(2022).Diamondoids and thiadiamondoids generated from hydrothermal pyrolysis of crude oil and TSR experiments.SCIENTIFIC REPORTS,12(1),18.
MLA Peng, Yanyan,et al."Diamondoids and thiadiamondoids generated from hydrothermal pyrolysis of crude oil and TSR experiments".SCIENTIFIC REPORTS 12.1(2022):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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