国家冰川冻土沙漠科学数据中心

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名称	Integrated geological-geophysical characterizations of deeply buried fractured-vuggy carbonate reservoirs in Ordovician strata, Tarim Basin
科技资源标识	CSTR:11738.14.NCDC.XDA14.PP6166.2024
DOI	https://doi.org/10.1016/j.marpetgeo.2018.10.028
数据共享方式	开放下载
摘要	The Central Uplift region of the Tarim Basin contains a series of thick Ordovician carbonates that form fracturedvuggy hydrocarbon-rich reservoirs along an unconformity. These fractured-vuggy reservoirs are difficult tocharacterize using traditional well logging and seismic interpretation methods because these carbonates feature complex and heterogeneous lithologies and variations in scale, geometry and spatial distribution.In this paper, a series of deeply buried fractured-vuggy carbonate reservoirs are characterized on micro-,macro- and mega-scales. These characterizations are based on previous studies detailing the carbonate sedimentation, diagenesis, and tectonic processes in the study area and abundant geological and geophysical data,including core samples, thin sections, and well logging and seismic datasets, which have been obtained and upscaled using the “choosing-classification-evaluation- generalizing-upscaling” (CCEGU) method. In this area,different facies can be identified at different scales: (1) Detailed core and thin section observations performed based on the Dunham classification demonstrate that 7 lithofacies and 19 rock types are present at the microscale (0.01 m); (2) logging data and assorted reservoir characteristics indicate that these 19 different rock typesconsist of 9 different electro facies at the macro-scale (0.1 m–1 m), and the presence of electro facies in individual wells can be recognized; and (3) these 9 different electro facies comprise 6 distinct seismic facies at themega-scale (10 m), and can be used to delineate the spatial outlines of potential reservoirs and evaluate theirproperties. The targets of particular interest in the study area are a series of partially dissolved dolomites locatednear large faults and a series of vuggy soluble limestones located near NE-trending strike-slip faults.This study combines geological and geophysical response data from fractured-vuggy carbonate reservoirs toachieve seamless connections among micro-scale, macro-scale and mega-scale observations to effectively characterize a series of strongly heterogeneous fractured-vuggy reservoirs. This method can also be applied to characterize other deeply buried paleokarst reservoirs in the Tarim Basin, as well as other strongly heterogeneous reservoirs.
学科分类	170.20
关键词	Fractured-vuggy reservoirsStrong heterogeneityMulti-scale geological-geophysicalcharacterizationTarim basin
作者	田飞,罗小荣,张旺
数据量	12.3 MiB
论文类型：	journal
论文网址：	https://www.sciencedirect.com/science/article/pii/S0264817218304343
期刊名称：	Marine and Petroleum Geology
出版时间：	2019-01-01

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数据引用

田飞,罗小荣,张旺. Integrated geological-geophysical characterizations of deeply buried fractured-vuggy carbonate reservoirs in Ordovician strata, Tarim Basin. 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.PP6166.2024.

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：智能导钻系统集成与试验
项目编号：XDA14050000
项目类别：中国科学院战略性先导科技专项（A类）