Sulfur and carbon isotopic compositions of the Permian to Triassic TSR and non-TSR altered solid bitumen and its parent source rock in NE Sichuan Basin

doi:10.1016/j.orggeochem.2016.12.004

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Sulfur and carbon isotopic compositions of the Permian to Triassic TSR and non-TSR altered solid bitumen and its parent source rock in NE Sichuan Basin
	Cai, Chunfang 1,2,3; Xiang, Lei 4; Yuan, Yuyang 5,6; Xu, Chenlu 1; He, Wenxiang 2; Tang, Youjun 2; Borjigin, Tenger 7
刊名	ORGANIC GEOCHEMISTRY
	2017-03-01
卷号	105 页码:1-12
关键词	Sulfur Isotopes Carbon Isotopes Thiols Solid Bitumen Tsr Sichuan Basin
ISSN号	0146-6380
DOI	10.1016/j.orggeochem.2016.12.004
文献子类	Article
英文摘要	Reservoir solid bitumens from the Permian to Triassic and potential source rocks in the northeastern Sichuan Basin were measured for elemental and stable carbon (delta C-13) and sulfur (delta S-34) isotopic compositions to determine the chemical and isotopic composition of non-TSR and TSR-altered solid bitumen and to develop proxies to reflect the extent of bitumen alteration by TSR. Non-TSR altered reservoir bitumen samples showed S/C atomic ratios <= 0.03 and had delta C-13 values closer to Longtan Formation (P(3)l) kerogen than to the Lower Silurian and Cambrian kerogens, and delta S-34 values slightly more enriched than P(3)l kerogens. The TSR-altered solid bitumens have incorporated significant amounts of TSR-derived H2S resulting in S/C atomic ratios (0.0470.074) and delta S-34 values (13.424.0 parts per thousand) being significantly higher than those of the solid bitumen not altered by TSR (S/C: 0.0130.030; delta S-34: 5.89.6 parts per thousand) and the potential source rock kerogen. The incorporation has produced a decrease in N/C ratio and negative shift of -2.7 parts per thousand in delta C-13 values that resulted from increasing TSR-H2S back reactions with C-12-rich n-alkanes from the gas phase, soluble solid bitumen or paleo-oil to generate organic sulfur compounds such as ethanethiol that were incorporated into the solid bitumens, which is followed by further aromatization and polymerization. The solid bitumens show positive relationships of S/C ratios and delta S-34 values to the associated gas H2S/(H2S + Sigma C-16) or TSR extents, and thus the S/C ratios and delta S-34 values can be used as proxies to reflect TSR extents. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	THERMOCHEMICAL SULFATE REDUCTION ; THERMAL CHEMICAL ALTERATION ; PALEOZOIC PETROLEUM POOLS ; PUGUANG GAS-FIELD ; TARIM BASIN ; SW CHINA ; ORGANOSULFUR COMPOUNDS ; SOUTHWEST CHINA ; TAZHONG AREA ; NW CHINA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000396831400001
资助机构	China National Funds for Distinguished Young Scientists(41125009) ; National Natural Sciences of China(41672143) ; China National Funds for Distinguished Young Scientists(41125009) ; National Natural Sciences of China(41672143) ; China National Funds for Distinguished Young Scientists(41125009) ; National Natural Sciences of China(41672143) ; China National Funds for Distinguished Young Scientists(41125009) ; National Natural Sciences of China(41672143)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53042]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Cai, Chunfang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Yangtze Univ, Minist Educ, Key Lab Explorat Technol Oil & Gas Resources, Wuhan 430100, Hunan, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 4.Nanjing Inst Geol & Palaeontol, State Key Lab Paleobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China 5.Sichuan Coll Architectural Technol, Dept Civil Engn, Deyang 618000, Sichuan, Peoples R China 6.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Sichuan, Peoples R China 7.Wuxi Inst Petr Geol, SINOPEC Petr Explorat & Prod Res Inst, Wuxi 214151, Peoples R China
推荐引用方式 GB/T 7714	Cai, Chunfang,Xiang, Lei,Yuan, Yuyang,et al. Sulfur and carbon isotopic compositions of the Permian to Triassic TSR and non-TSR altered solid bitumen and its parent source rock in NE Sichuan Basin[J]. ORGANIC GEOCHEMISTRY,2017,105:1-12.
APA	Cai, Chunfang.,Xiang, Lei.,Yuan, Yuyang.,Xu, Chenlu.,He, Wenxiang.,...&Borjigin, Tenger.(2017).Sulfur and carbon isotopic compositions of the Permian to Triassic TSR and non-TSR altered solid bitumen and its parent source rock in NE Sichuan Basin.ORGANIC GEOCHEMISTRY,105,1-12.
MLA	Cai, Chunfang,et al."Sulfur and carbon isotopic compositions of the Permian to Triassic TSR and non-TSR altered solid bitumen and its parent source rock in NE Sichuan Basin".ORGANIC GEOCHEMISTRY 105(2017):1-12.