国家冰川冻土沙漠科学数据中心

元数据

名称	Quantitative measurement of interaction strength between kaolinite and different oil fractions via atomic force microscopy: Implications for clay-controlled oil mobility
科技资源标识	CSTR:11738.14.NCDC.XDA14.PP4390.2024
DOI	10.1016/j.marpetgeo.2021.105296
数据共享方式	开放下载
摘要	Clay–oil interaction in unconventional shale reservoir plays a critical role in oil migration, which further governs the exploration of petroleum resource. In this study, interaction strength between kaolinite and different oil fractions (saturates, aromatics, resins and asphaltenes) were quantitatively investigated by atomic force mi- croscopy (AFM). The AFM tips with various oil fraction coatings were monitored to approach and retract from kaolinite surface, from which the force curves with adhesion information were derived. As a result, kaolinite-oil interaction curves are characterized with large hysteresis, which is due to the adhesion behavior between two phases caused by a meniscus formed at contact area. Adhesive strength, including force and work, increases from nonpolar to polar organics in order of saturates, aromatics, resins and asphaltenes. The clay-oil interaction could be well depicted by using a combined force model composed of attractive van der Waals force, capillary force and intermolecular repulsive force. With the application of infrared spectroscopy in oil fractions, the difference of adhesion among various oil fractions was analyzed from a viewpoint of binding types between functional groups in oil and kaolinite. Compared with nonpolar saturates, it is the aromatic C––C group in aromatics, and the carboxy (-COOH) functional group in polar resins and asphaltenes, that contributes to their strong adhesion with clay surface, respectively. Quantitatively, adhesion force and work caused by aromatic C––C and –COOH are an order of magnitude higher than aliphatic CH2+CH3. These observations on interaction strength between kaolinite and different oil fractions, especially from a view of chemistry, yield much information on the mechanism of clay-controlled oil mobility in shale from a new perspective.
学科分类	170.50
关键词	AFMInteractionKaoliniteOilMobility
作者	Liu Yuke
数据量	23.7 MiB
论文类型：	journal
论文网址：	https://doi.org/10.1016/j.marpetgeo.2021.105296
期刊名称：	Marine and Petroleum Geology
出版时间：	2021-11-01

引用和标注

数据引用

Liu Yuke. Quantitative measurement of interaction strength between kaolinite and different oil fractions via atomic force microscopy: Implications for clay-controlled oil mobility. 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.PP4390.2024.

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）