鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

李宏涛

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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

李宏涛

文章导航 > 沉积学报 > 2007 > 25(3): 467-473

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

引用本文:

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

LI Hongtao. Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin[J]. Acta Sedimentologica Sinica, 2007, 25(3): 467-473.

Citation:

LI Hongtao. Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin[J]. Acta Sedimentologica Sinica, 2007, 25(3): 467-473.

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

引用本文:

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

Citation:

鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

李宏涛

中国科学院矿产资源研究重点实验室北京 100029

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通讯作者:
李宏涛

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Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

LI Hongtao

Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

More Information

Corresponding author: LI Hongtao

摘要

摘要: 对鄂尔多斯盆地东胜地区中侏罗统直罗组砂岩中烃类包裹体进行镜下观察、描述，利用压碎抽提法对烃类包裹体进行色谱—质谱分析，并与白垩系油苗、三叠系油砂及源岩抽提物进行对比，目的是探讨其来源。包裹体油生物标志物成熟度参数，C29ααα甾烷20S/(S+R)、C32αβ藿烷22S/(S+R)比值基本达到平衡值，利用甲基菲指数计算的镜质体反射率参数介于0.64%～0.82％之间，显示包裹体中石油烃已接近成熟—成熟热演化阶段；物质来源及沉积环境参数，ααα20R甾烷百分含量C27>C28<C29，C25/C26三环萜烷、规则甾烷/17αC29-33藿烷比值显示相对低值，结合伽马蜡烷指数、C35升藿烷指数等参数，综合反映了其来源应为弱氧化－还原环境下的腐殖—腐泥型湖相有机质。参数对比发现，包裹体油与三叠系油砂和三叠系源岩抽提物接近，而与白垩系油砂抽提物相差较远，说明砂岩中包裹体油主要来自三叠系湖相烃源岩。
- 烃类包裹体 /
- 色谱—质谱 /
- 生物标志物 /
- 源岩 /
- 鄂尔多斯盆地
Abstract: First of all, the researchers observed and described hydrocarbon inclusions in Middle Jurassic Zhiluo Formation sandstones in Dongsheng area, northern Ordos basin under microscope and UV fluorescence, and then, carefully selected the sandstone samples containing hydrocarbon inclusions with high abundance. Subsequently, these samples were washed, crushed, extracted for hydrocarbons and analyzed for GC and GCMS and compared with oils extracted from Cretaceous sandstone, Triassic sandstone and source rock, respectively. The results show that C29 ααα sterane 20S/(20S+20R) and C32 αβ hopane 22S/(22S+22R) ratios of the inclusion oils are close to respective equilibrium values. Vitrinite reflectance values were calculated based on methylphenanthrene index(MPI) and have values from 0.64％ to 0.82％, suggesting that the inclusion oils are near mature to mature. Among C27, C28 and C29 ααα20R steranes, C27>C28<C29. C25/C26 tricyclic terpane and regular steranes/17αC29～33 hopanes ratios are relatively low. The values together with those of gammacerane index and homohopane index consistently indicate that the inclusion oils were derived from humicsapropel type organic matter under poor reducing freshwater to semisaline environment. The features are similar to those of organic matter extracted from Triassic sandstone and source rock, but are different from that of Cretaceous sandstone. Thus, it can be concluded that the inclusion oils were mainly derived from Triassic lacustrine facies source rock. 
- hydrocarbon inclusions /
- GCMS /
- biomarker /
- source rock /
- Ordos basin

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[1]	张云望, 金鑫, 乔培军, 李滨兵, 洪彦哲, 陈俞超, 芦刚, 杜怡星, 时志强. 鄂尔多斯盆地东北部下侏罗统富县组沉积物源分析 . 沉积学报, 2023, 41(5): 1414-1429. doi: 10.14027/j.issn.1000-0550.2022.154
[2]	郑庆华, 刘行军, 柳益群, 周鼎武, 杨开艳, 王贵文, 张洋洋, 陈朕, 刘亮. 鄂尔多斯盆地延长组长7油层组碳酸质喷积岩初探 . 沉积学报, 2021, 39(5): 1222-1238. doi: 10.14027/j.issn.1000-0550.2020.075
[3]	胡鹏, 于兴河, 陈宏亮, 赵晨帆, 周进松, 韩小琴, 李亚龙. 障壁坝砂体储层特征与成岩孔隙定量演化模式——以鄂尔多斯盆地延长探区本溪组为例 . 沉积学报, 2019, 37(2): 390-402. doi: 10.14027/j.issn.1000-0550.2018.121
[4]	贾浪波, 钟大康, 孙海涛, 严锐涛, 张春林, 莫午零, 邱存, 董媛, 李兵, 廖广新. 鄂尔多斯盆地本溪组沉积物物源探讨及其构造意义 . 沉积学报, 2019, 37(5): 1087-1103. doi: 10.14027/j.issn.1000-0550.2019.014
[5]	梁飞, 黄文辉, 牛君. 鄂尔多斯盆地西南缘二叠系山西组山1段-下石盒子组盒8段物源分析 . 沉积学报, 2018, 36(1): 142-153. doi: 10.3969/j.issn.1000-0550.2018.016
[6]	王万春, 王晓锋, 郑建京, 王作栋. 鄂尔多斯盆地西南缘奥陶系泥页岩与碳酸盐岩生物标志物特征对比 . 沉积学报, 2016, 34(2): 404-414. doi: 10.14027/j.cnki.cjxb.2016.02.019
[7]	贺静. 物源对鄂尔多斯盆地中部延长组x长6砂岩孔隙发育的控制作用 . 沉积学报, 2011, 29(1): 80-87.
[8]	崔景伟. 冀北凹陷高于庄组与洪水庄组在岩芯、露头中多赋存态生物标志物的对比 . 沉积学报, 2011, 29(3): 593-598.
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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

李宏涛

中国科学院矿产资源研究重点实验室北京 100029

通讯作者: 李宏涛

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2007-06-10

关键词:

源岩 /

摘要: 对鄂尔多斯盆地东胜地区中侏罗统直罗组砂岩中烃类包裹体进行镜下观察、描述，利用压碎抽提法对烃类包裹体进行色谱—质谱分析，并与白垩系油苗、三叠系油砂及源岩抽提物进行对比，目的是探讨其来源。包裹体油生物标志物成熟度参数，C29ααα甾烷20S/(S+R)、C32αβ藿烷22S/(S+R)比值基本达到平衡值，利用甲基菲指数计算的镜质体反射率参数介于0.64%～0.82％之间，显示包裹体中石油烃已接近成熟—成熟热演化阶段；物质来源及沉积环境参数，ααα20R甾烷百分含量C27>C28<C29，C25/C26三环萜烷、规则甾烷/17αC29-33藿烷比值显示相对低值，结合伽马蜡烷指数、C35升藿烷指数等参数，综合反映了其来源应为弱氧化－还原环境下的腐殖—腐泥型湖相有机质。参数对比发现，包裹体油与三叠系油砂和三叠系源岩抽提物接近，而与白垩系油砂抽提物相差较远，说明砂岩中包裹体油主要来自三叠系湖相烃源岩。

English Abstract

Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

LI Hongtao

Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

Corresponding author: LI Hongtao

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2007-06-10

Keywords:

Abstract: First of all, the researchers observed and described hydrocarbon inclusions in Middle Jurassic Zhiluo Formation sandstones in Dongsheng area, northern Ordos basin under microscope and UV fluorescence, and then, carefully selected the sandstone samples containing hydrocarbon inclusions with high abundance. Subsequently, these samples were washed, crushed, extracted for hydrocarbons and analyzed for GC and GCMS and compared with oils extracted from Cretaceous sandstone, Triassic sandstone and source rock, respectively. The results show that C29 ααα sterane 20S/(20S+20R) and C32 αβ hopane 22S/(22S+22R) ratios of the inclusion oils are close to respective equilibrium values. Vitrinite reflectance values were calculated based on methylphenanthrene index(MPI) and have values from 0.64％ to 0.82％, suggesting that the inclusion oils are near mature to mature. Among C27, C28 and C29 ααα20R steranes, C27>C28<C29. C25/C26 tricyclic terpane and regular steranes/17αC29～33 hopanes ratios are relatively low. The values together with those of gammacerane index and homohopane index consistently indicate that the inclusion oils were derived from humicsapropel type organic matter under poor reducing freshwater to semisaline environment. The features are similar to those of organic matter extracted from Triassic sandstone and source rock, but are different from that of Cretaceous sandstone. Thus, it can be concluded that the inclusion oils were mainly derived from Triassic lacustrine facies source rock. 

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

引用本文:

李宏涛. 鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析[J]. 沉积学报, 2007, 25(3): 467-473.

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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

通讯作者:
李宏涛

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Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

Corresponding author: LI Hongtao

计量

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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

中国科学院矿产资源研究重点实验室北京 100029

通讯作者: 李宏涛

English Abstract

Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

Corresponding author: LI Hongtao

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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

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Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

Corresponding author: LI Hongtao

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鄂尔多斯北部直罗组中烃类包裹体地球化学特征及来源分析

中国科学院矿产资源研究重点实验室 北京 100029

通讯作者: 李宏涛

English Abstract

Geochemical Characteristics and Source of Hydrocarbon Inclusions in Zhiluo Formation Sandstone in Dongsheng Area, Northern Ordos Basin

Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

Corresponding author: LI Hongtao

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通讯作者:
李宏涛

中国科学院矿产资源研究重点实验室北京 100029