国家冰川冻土沙漠科学数据中心

元数据

名称	Sedimentary environment constraints on the diagenetic evolution of clastic reservoirs: Examples from the Eocene “red-bed” and “gray-bed” in the Dongying Depression, China
科技资源标识	CSTR:11738.14.NCDC.XDA14.PP5883.2024
DOI	10.1016/j.marpetgeo.2021.105153
数据共享方式	开放下载
摘要	The diagenetic characteristics and differences between the Eocene red-bed sandstone deposited in an arid environment and gray-bed sandstone deposited in a relatively humid environment were investigated systematically by an integrated analysis of petrography, X-ray diffraction, carbon and oxygen stable isotopes and fluid inclusion microthermometry. Strong eodiagenetic calcite and gypsum/anhydrite cementation occurred at the boundary of the Eocene red-bed sandstone, while the centre of the red-bed sandstone was characterized by relatively strong quartz dissolution and weak mesodiagenetic feldspar dissolution and ferro-carbonate cementation. Eodiagenetic calcite cementation at the boundary of the gray-bed sandstone and quartz dissolution were relatively weak, while the carbonate cemented zone at the boundary of the gray-bed sandstone was strengthened by mesodiagenetic ferro-carbonate cement. Relatively strong feldspar dissolution and ferro-carbonate cementation occurred in the centre of gray-bed sandstone beds. By comparing the diagenetic differences between the red-bed sandstones and gray-bed sandstones, it is shown that sedimentary environment had an obvious influence on reservoir diagenetic evolution and reservoir properties through influencing the chemical properties of connate water, the transformation rate and degree of clay minerals in interbedded mudstone, and the properties of diagenetic fluids during burial process. • Eodiagenetic calcite cementation and quartz dissolution in the red-bed were stronger than that in the gray-bed sandstone. • Mesodiagenetic feldspar dissolution and carbonate cementation in the red-bed were weaker than that in the gray-bed sandstone. • Reservoir space in the red-bed is mainly primary pores, while that in the gray-bed is mainly secondary pores. • Sedimentary environment had obvious influence on the reservoir diagenetic evolution.
学科分类	170.50
关键词	Diagenesis Sedimentary environment Red-bed sandstone Gray-bed sandstone Eocene Dongying depression
作者	Jian Wang,Yuhan Pang,et al
数据量	30.4 MiB
论文类型：	journal
论文网址：	https://doi.org/10.1016/j.marpetgeo.2021.105153
期刊名称：	Marine and Petroleum Geology
出版时间：	2021-09-01

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数据引用

Jian Wang,Yuhan Pang,et al. Sedimentary environment constraints on the diagenetic evolution of clastic reservoirs: Examples from the Eocene “red-bed” and “gray-bed” in the Dongying Depression, China. 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.PP5883.2024.

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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）