四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

朱扬明; 李颖; 郝芳; 邹华耀; 郭旭升

doi:10.14027/j.cnki.cjxb.2017.06.016

ISSN 1000-0550 CN 62-1038/P

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四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

朱扬明, 李颖, 郝芳, 邹华耀, 郭旭升

文章导航 > 沉积学报 > 2017 > 35(6): 1254-1264

朱扬明, 李颖, 郝芳, 邹华耀, 郭旭升. 四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义[J]. 沉积学报, 2017, 35(6): 1254-1264. doi: 10.14027/j.cnki.cjxb.2017.06.016

引用本文:

ZHU YangMing, LI Ying, HAO Fang, ZOU HuaYao, GUO XuSheng. Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1254-1264. doi: 10.14027/j.cnki.cjxb.2017.06.016

Citation:

ZHU YangMing, LI Ying, HAO Fang, ZOU HuaYao, GUO XuSheng. Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1254-1264. doi: 10.14027/j.cnki.cjxb.2017.06.016

引用本文:

Citation:

ZHU YangMing, LI Ying, HAO Fang, ZOU HuaYao, GUO XuSheng. Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1254-1264. doi: 10.14027/j.cnki.cjxb.2017.06.016

四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

1.
浙江大学地球科学学院, 杭州 310027;
2.
中国地质大学(武汉), 武汉 430074;
3.
中国石油大学(北京)地球科学学院, 北京 102249;
4.
中国石化勘探分公司, 成都 610000

基金项目: 国家科技重大专项（2011ZX05005-03-009HZ）；教育部高等学校博士学科点专项科研基金博导类资助课题（20130101110051）

详细信息

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

中图分类号: TE112.11

计量

文章访问数: 630
HTML全文浏览量: 14
PDF下载量: 928
被引次数: 0

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

1.
School of Earth Sciences, Zhejiang University, Hangzhou 310027, China;
2.
China University of Geosciences, Wuhan 430074, China;
3.
College of Earth Sciences, China University of Petroleum, Beijing 102249, China;
4.
Southern Exploration Company, SINOPEC, Chengdu 610000, China

Funds: National Science and Technology Major Project, No. 2011ZX05005-03-009HZ; Specialized Research Fund for the Doctoral Program of Higher Education, No. 20130101110051

摘要

摘要: 采用质谱和色谱-同位素质谱技术，测定了500余个干酪根及饱和烃、芳烃组份、正构烷烃的δ¹³C值，以此揭示了四川盆地海、陆相烃源岩有机碳同位素组成随地质时代的变化特点及其在高成熟阶段的演化特征，并结合其他相关分析资料，应用碳同位素剖析了不同类型海、陆相烃源岩的有机质生源及沉积环境。研究结果表明，该盆地从震旦系灯影组到中三叠统雷口坡组的海相地层中，干酪根的碳同位素组成随层位变新呈逐渐变重的趋势，可能的原因之一是浮游植物的进化作用；而上三叠统须家河组至中侏罗统千佛崖组的陆相有机质碳同位素组成则有反向的年代变化，主要与生源构成和沉积环境性质有关。这些海、陆相烃源岩的有机源难以用干酪根δ¹³C值进行区分，而可用饱和烃与芳烃组份的δ¹³C及其CV值来区别。海洋和湖泊不同沉积相带烃源岩的干酪根具有明显不同的δ¹³C值，结合其他相关资料可识别其有机质来源。煤系地层中煤与泥岩在干酪根碳同位素组成上没有可区分性，而两者有不同的正构烷烃碳同位素分布曲线。从成熟晚期到高-过成熟阶段，海、陆相干酪根的碳同位素均变重1~2‰，煤系泥岩的正构烷烃碳同位素分布曲线由负向线型分布向平直型演变。这些碳同位素的变化特征为油气源对比和烃源识别提供了依据。
- 烃源岩 /
- 碳同位素 /
- 干酪根 /
- 正构烷烃 /
- 四川盆地
Abstract: Over 500 kerogens as well selected saturate and aromatic fractions and n-alkanes from various age source rocks in the Sichuan basin were analyzed using MS and GC-ir-MS for δ¹³C ratios, to characterize the age-trend in organic carbon isotopic composition in marine and terrestrial sediments and their thermal evolution during over-mature stage. Moreover, different kind of marine and terrestrial source rocks with respect to their biological organic sources were distinguished using carbon isotopes in combination with other analytical data. The results indicate the kerogens from marine sediments in Sinian Dengying to middle Triassic Leikoupo Formations in this basin show a trend toward isotopically heavy values with decreasing age, possibly due to biological evolution. Whereas, a reversal isotopic-age trend for the terrigenous organic carbon is observed in upper Triassic Xujiahe to middle Jurassic Qingfoyan Formations and is considered to be dependent of biological source and sedimentary environment. The organic inputs of marine and terrestrial source rocks cannot be differentiated using the carbon isotopic ratios of kerogen, however, it can be distinguished by δ¹³C values of saturated and aromatic fractions and CV values. The marine and lacustrine source rocks with different facies are of obviously varying δ¹³C values of kerogens, thus the isotopic ratio, combined with additional relate-source data, can be acted as an indicator for their organic source. Coal and mudstone in coal-bearing strata is not distinguishable for their kerogen carbon isotopes, but has different profiles of n-alkane isotopes with more negative values in mudstone related to coal. The marine (type-Ⅱ)and terrigenous (type-Ⅲ) kerogens both continuously become isotopically enriched in ¹³C by 1‰~2‰ with maturation during high-over maturity. The negatively sloping curve of carbon isotope for individual n-alkanes from coaly source rock at mature stage is transferred into a flat one at high maturity. These variations in carbon isotope compositions are helpful for oil & gas-rock correlation and hydrocarbon source identification.
- source rock /
- carbon isotope /
- kerogen /
- n-alkane /
- Sichuan Basin

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[1]	郭成波, 李美俊, 刘晓强, 韩秋雅. 干酪根热解生烃分子模拟研究进展 . 沉积学报, 2024, 42(5): 1494-1511. doi: 10.14027/j.issn.1000-0550.2023.045
[2]	王泽唐, 王超勇, 董再田, 朱昱璇. 四川盆地晚奥陶世—早志留世碳硫同位素分馏动力学模型构建 . 沉积学报, 2024, 42(6): 2054-2065. doi: 10.14027/j.issn.1000-0550.2023.036
[3]	厚刚福, 宋兵, 倪超, 陈薇, 王力宝, 窦洋, 李亚哲, 彭博. 致密油源储配置特征及油气勘探意义——以四川盆地川中地区侏罗系大安寨段为例 . 沉积学报, 2021, 39(5): 1078-1085. doi: 10.14027/j.issn.1000-0550.2020.122
[4]	赵青芳, 李双林, 温珍河, 龚建明, 肖国林, 吴亮亮. 北黄海盆地LV井侏罗系烃源岩特征及油源对比 . 沉积学报, 2016, 34(4): 794-802. doi: 10.14027/j.cnki.cjxb.2016.04.019
[5]	曹怀仁, 胡建芳, 席党鹏, 彭平安, 雷艳. 松辽盆地后金沟剖面烃源岩地球化学特征及其古环境重建 . 沉积学报, 2015, 33(5): 1043-1052. doi: 10.14027/j.cnki.cjxb.2015.05.020
[6]	王涌泉. 干酪根化学降解产物的碳同位素组成研究 . 沉积学报, 2007, 25(5): 778-781.
[7]	赵桂瑜, 刘洛夫, 李术元. 爱沙尼亚干酪根催化降解生烃过程及动力学研究 . 沉积学报, 2004, 22(3): 525-528.
[8]	张学军, 严晓虎, 李佩珍, 苗得玉, 胡文, 刘庆. 干酪根中类脂肪链含量的测定及石油地质意义 . 沉积学报, 2004, 22(4): 711-717.
[9]	卢鸿, 柴平霞, 孙永革, 彭平安. 轮南14井原油正构烷烃和类异戊二烯单体碳同位素研究 . 沉积学报, 2002, 20(3): 477-504.
[10]	熊永强, 耿安松, 盛国英, 傅家谟. 生排烃过程中正构烷烃单体碳同位素组成的变化特征及其研究意义 . 沉积学报, 2001, 19(3): 469-473.
[11]	陈践发, 陈振岩, 季东民, 于深, 赵长虹, 王先彬. 辽河盆地天然气中重烃异常富集重碳同位素的成因探讨 . 沉积学报, 1998, 16(2): 5-8.
[12]	彭林, 沈平, 文启彬. 利用正构烷烃单分子碳同位素组成对兰州大气污染源的探讨 . 沉积学报, 1998, 16(4): 158-162.
[13]	王万春, 徐永昌, Manfred Schidlowski, Eckhard Faber, Wolfgang Stahl. 不同沉积环境及成熟度干酪根的碳氢同位素地球化学特征 . 沉积学报, 1997, 15(S1): 132-137.
[14]	张文正, 昝川莉. 烃源岩残留沥青中正构烷烃分子的碳同位素研究 . 沉积学报, 1997, 15(2): 212-215.
[15]	王万春. 天然气、原油、干酪根的氢同位素地球化学特征 . 沉积学报, 1996, 14(S1): 131-135.
[16]	陆琦, 刘惠芳, 罗莉绢, 雷新荣. 广西百色盆地干酪根的研究──兼探干酪根的演化与粘土矿物的关系 . 沉积学报, 1994, 12(4): 31-39.
[17]	陆琦, 刘惠芳, 罗莉绢, 雷新荣. 广西百色盆地干酪根的研究——兼探干酪根的演化与粘土矿物的关系 . 沉积学报, 1993, 11(2): 124-132.
[18]	陈践发, 徐永昌. 煤系地层中有机质碳同位素组成特征 . 沉积学报, 1992, 10(4): 44-48.
[19]	秦匡宗, 吴肖令. 高磁场固态碳13核磁共振法研究干酪根的热降解成烃机理 . 沉积学报, 1990, 8(1): 19-27.
[20]	黄建国, 刘世万. 四川盆地三叠纪蒸发岩地层硫同位素的分布 . 沉积学报, 1989, 7(2): 105-110.

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四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

1. 浙江大学地球科学学院, 杭州 310027;

2. 中国地质大学(武汉), 武汉 430074;

3. 中国石油大学(北京)地球科学学院, 北京 102249;

4. 中国石化勘探分公司, 成都 610000

基金项目: 国家科技重大专项（2011ZX05005-03-009HZ）；教育部高等学校博士学科点专项科研基金博导类资助课题（20130101110051）

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

收稿日期: 2017-03-07
修回日期: 2017-05-03
刊出日期: 2017-12-10

中图分类号: TE112.11

关键词:

烃源岩 /

碳同位素 /

干酪根 /

正构烷烃 /

四川盆地

摘要: 采用质谱和色谱-同位素质谱技术，测定了500余个干酪根及饱和烃、芳烃组份、正构烷烃的δ¹³C值，以此揭示了四川盆地海、陆相烃源岩有机碳同位素组成随地质时代的变化特点及其在高成熟阶段的演化特征，并结合其他相关分析资料，应用碳同位素剖析了不同类型海、陆相烃源岩的有机质生源及沉积环境。研究结果表明，该盆地从震旦系灯影组到中三叠统雷口坡组的海相地层中，干酪根的碳同位素组成随层位变新呈逐渐变重的趋势，可能的原因之一是浮游植物的进化作用；而上三叠统须家河组至中侏罗统千佛崖组的陆相有机质碳同位素组成则有反向的年代变化，主要与生源构成和沉积环境性质有关。这些海、陆相烃源岩的有机源难以用干酪根δ¹³C值进行区分，而可用饱和烃与芳烃组份的δ¹³C及其CV值来区别。海洋和湖泊不同沉积相带烃源岩的干酪根具有明显不同的δ¹³C值，结合其他相关资料可识别其有机质来源。煤系地层中煤与泥岩在干酪根碳同位素组成上没有可区分性，而两者有不同的正构烷烃碳同位素分布曲线。从成熟晚期到高-过成熟阶段，海、陆相干酪根的碳同位素均变重1~2‰，煤系泥岩的正构烷烃碳同位素分布曲线由负向线型分布向平直型演变。这些碳同位素的变化特征为油气源对比和烃源识别提供了依据。

English Abstract

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

1. School of Earth Sciences, Zhejiang University, Hangzhou 310027, China;

2. China University of Geosciences, Wuhan 430074, China;

3. College of Earth Sciences, China University of Petroleum, Beijing 102249, China;

4. Southern Exploration Company, SINOPEC, Chengdu 610000, China

Funds: National Science and Technology Major Project, No. 2011ZX05005-03-009HZ; Specialized Research Fund for the Doctoral Program of Higher Education, No. 20130101110051

Received Date: 2017-03-07
Rev Recd Date: 2017-05-03
Publish Date: 2017-12-10

Keywords:

Abstract: Over 500 kerogens as well selected saturate and aromatic fractions and n-alkanes from various age source rocks in the Sichuan basin were analyzed using MS and GC-ir-MS for δ¹³C ratios, to characterize the age-trend in organic carbon isotopic composition in marine and terrestrial sediments and their thermal evolution during over-mature stage. Moreover, different kind of marine and terrestrial source rocks with respect to their biological organic sources were distinguished using carbon isotopes in combination with other analytical data. The results indicate the kerogens from marine sediments in Sinian Dengying to middle Triassic Leikoupo Formations in this basin show a trend toward isotopically heavy values with decreasing age, possibly due to biological evolution. Whereas, a reversal isotopic-age trend for the terrigenous organic carbon is observed in upper Triassic Xujiahe to middle Jurassic Qingfoyan Formations and is considered to be dependent of biological source and sedimentary environment. The organic inputs of marine and terrestrial source rocks cannot be differentiated using the carbon isotopic ratios of kerogen, however, it can be distinguished by δ¹³C values of saturated and aromatic fractions and CV values. The marine and lacustrine source rocks with different facies are of obviously varying δ¹³C values of kerogens, thus the isotopic ratio, combined with additional relate-source data, can be acted as an indicator for their organic source. Coal and mudstone in coal-bearing strata is not distinguishable for their kerogen carbon isotopes, but has different profiles of n-alkane isotopes with more negative values in mudstone related to coal. The marine (type-Ⅱ)and terrigenous (type-Ⅲ) kerogens both continuously become isotopically enriched in ¹³C by 1‰~2‰ with maturation during high-over maturity. The negatively sloping curve of carbon isotope for individual n-alkanes from coaly source rock at mature stage is transferred into a flat one at high maturity. These variations in carbon isotope compositions are helpful for oil & gas-rock correlation and hydrocarbon source identification.

引用本文:

Citation:

ZHU YangMing, LI Ying, HAO Fang, ZOU HuaYao, GUO XuSheng. Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1254-1264. doi: 10.14027/j.cnki.cjxb.2017.06.016

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四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

计量

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

计量

目录

四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

1. 浙江大学地球科学学院, 杭州 310027;

2. 中国地质大学(武汉), 武汉 430074;

3. 中国石油大学(北京)地球科学学院, 北京 102249;

4. 中国石化勘探分公司, 成都 610000

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

English Abstract

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

1. School of Earth Sciences, Zhejiang University, Hangzhou 310027, China;

2. China University of Geosciences, Wuhan 430074, China;

3. College of Earth Sciences, China University of Petroleum, Beijing 102249, China;

4. Southern Exploration Company, SINOPEC, Chengdu 610000, China

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四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

作者简介: 朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

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出版历程

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

计量

出版历程

目录

四川盆地海、陆相烃源岩有机质稳定碳同位素组成变化及其地球化学意义

doi: 10.14027/j.cnki.cjxb.2017.06.016

1. 浙江大学地球科学学院, 杭州 310027; 2. 中国地质大学(武汉), 武汉 430074; 3. 中国石油大学(北京)地球科学学院, 北京 102249; 4. 中国石化勘探分公司, 成都 610000

作者简介: 朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

English Abstract

Compositional Variations and Geochemical Significances of Stable Carbon Isotope for Organic Matters from Marine and Terrestrial Source Rocks in Sichuan Basin

1. School of Earth Sciences, Zhejiang University, Hangzhou 310027, China; 2. China University of Geosciences, Wuhan 430074, China; 3. College of Earth Sciences, China University of Petroleum, Beijing 102249, China; 4. Southern Exploration Company, SINOPEC, Chengdu 610000, China

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

1. 浙江大学地球科学学院, 杭州 310027;

2. 中国地质大学(武汉), 武汉 430074;

3. 中国石油大学(北京)地球科学学院, 北京 102249;

4. 中国石化勘探分公司, 成都 610000

作者简介:
朱扬明,男,1954年出生,教授,博士,油气地球化学,E-mail:zyming@zju.edu.cn

1. School of Earth Sciences, Zhejiang University, Hangzhou 310027, China;

2. China University of Geosciences, Wuhan 430074, China;

3. College of Earth Sciences, China University of Petroleum, Beijing 102249, China;

4. Southern Exploration Company, SINOPEC, Chengdu 610000, China