国家冰川冻土沙漠科学数据中心

元数据

名称	Effects of extractable organic matter from mature lacustrine shale on the pore structure and their implications.
科技资源标识	CSTR:11738.14.NCDC.XDA14.PP5619.2024
DOI	10.1306/01282220164
数据共享方式	开放下载
摘要	The porosity and pore size distribution of shale within the oil window before and after solvent extraction are important for estimating the total oil content, understanding storage and migration pathways, and the location and accessibility of hydrocarbons. However, the changes in porosity and pore size distribution of shale before and after extraction are complicated, and the mechanism is not well understood. The x-ray diffraction, Rock-Eval pyrolysis, field-emission scanning electron microscopy, and low-pressure gas adsorption were conducted to investigate the geochemistry and pore structures of extracted and nonextracted shale samples from the Yanchang Formation in the Ordos Basin, China. The extractable organic matter (EOM) in the samples includes hydrocarbons in pores and adsorbed on organic matter (OM) and minerals, and soluble porous or nonporous solid OM. The total pore volume and specific surface area (SSA) generally increased in the extracted samples. However, decreased pore volume at some pore size ranges in several extracted samples was observed, and there were differences in the incremental pore volume, SSA, and pore size distributions. The removal of liquid hydrocarbons from organic or inorganic pores, adsorbed EOM, and soluble porous or nonporous solid OM causes differences in changes in pore volume, SSA, and pore size distribution. The fractions of adsorbed EOM and soluble porous and nonporous, solid OM should be subtracted to avoid overestimating the total oil content. The inorganic pores and siltstone and sandstone laminae may play an important role in hydrocarbon storage and migration, which may be underestimated.
学科分类	170.50
关键词	TRIASSIC YANCHANG FORMATION ORDOS BASIN PRIMARY MIGRATION SOURCE ROCKS PETROLEUM EXPULSION ZHANGJIATAN SHALE BARNETT SHALE SOLID BITUMEN GAS SHALES OIL
作者	Lei Yuhong,Xiaorong Luo,Xiangzeng Wang,Ming Cheng
数据量	9.1 MiB
论文类型：	journal
论文网址：	https://doi.org/10.1306/01282220164
期刊名称：	AAPG Bulletin
出版时间：	2022-09-01

引用和标注

数据引用

Lei Yuhong,Xiaorong Luo,Xiangzeng Wang,Ming Cheng. Effects of extractable organic matter from mature lacustrine shale on the pore structure and their implications.. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP5619.2024.

许可协议

本作品采用知识共享署名 4.0 国际许可协议进行许可。

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项目信息详情

项目名称：深层油气形成与分布预测
项目编号：XDA14010000
项目类别：中国科学院战略性先导科技专项（A类）