Effects of Clay Minerals and External Pressures on Imbibition in Shales

Imbibition is an important mechanism of recovery during waterflooding and low flow-back during fracking in shale reservoirs. Experiments were carried out to study the development of imbibition in shale samples. The effects of clay minerals, especially the illite and IS, were mainly investigated and...

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Autores principales:	Li Lu, Jianting Li, Xuhui Zhang, Yingjun Li, Fujian Ma
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	imbibition shale clay minerals or illite IS NMR Technology T
Acceso en línea:	https://doaj.org/article/f8b6d788ba514ce1928437823f1e09b8
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id	oai:doaj.org-article:f8b6d788ba514ce1928437823f1e09b8
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spelling	oai:doaj.org-article:f8b6d788ba514ce1928437823f1e09b82021-11-25T17:26:21ZEffects of Clay Minerals and External Pressures on Imbibition in Shales10.3390/en142275281996-1073https://doaj.org/article/f8b6d788ba514ce1928437823f1e09b82021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7528https://doaj.org/toc/1996-1073Imbibition is an important mechanism of recovery during waterflooding and low flow-back during fracking in shale reservoirs. Experiments were carried out to study the development of imbibition in shale samples. The effects of clay minerals, especially the illite and IS, were mainly investigated and discussed. The imbibition under different pressures was conducted and compared. The influence of clay minerals on imbibition in shale is significant and complex. It is shown that the low content of illite and IS and small capillary force lead to small imbibition mass and speed. Formation of new micro fractures due to the swelling of clay minerals can cause the permeability to increase and the imbibition to be speeded up. The pore structure, the content of IS, and the capillary force affect the imbibition process significantly. The external pressure obviously affects the imbibition speed and the final imbibition mass. The content of clay minerals is more important to the formation of new micro fractures than the external pressure. There is a peak in the curve of displacement efficiency versus the content of either clay minerals or illite and IS. The effect of illite and IS more remarkable.Li LuJianting LiXuhui ZhangYingjun LiFujian MaMDPI AGarticleimbibitionshaleclay minerals or illiteISNMRTechnologyTENEnergies, Vol 14, Iss 7528, p 7528 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	imbibition shale clay minerals or illite IS NMR Technology T
spellingShingle	imbibition shale clay minerals or illite IS NMR Technology T Li Lu Jianting Li Xuhui Zhang Yingjun Li Fujian Ma Effects of Clay Minerals and External Pressures on Imbibition in Shales
description	Imbibition is an important mechanism of recovery during waterflooding and low flow-back during fracking in shale reservoirs. Experiments were carried out to study the development of imbibition in shale samples. The effects of clay minerals, especially the illite and IS, were mainly investigated and discussed. The imbibition under different pressures was conducted and compared. The influence of clay minerals on imbibition in shale is significant and complex. It is shown that the low content of illite and IS and small capillary force lead to small imbibition mass and speed. Formation of new micro fractures due to the swelling of clay minerals can cause the permeability to increase and the imbibition to be speeded up. The pore structure, the content of IS, and the capillary force affect the imbibition process significantly. The external pressure obviously affects the imbibition speed and the final imbibition mass. The content of clay minerals is more important to the formation of new micro fractures than the external pressure. There is a peak in the curve of displacement efficiency versus the content of either clay minerals or illite and IS. The effect of illite and IS more remarkable.
format	article
author	Li Lu Jianting Li Xuhui Zhang Yingjun Li Fujian Ma
author_facet	Li Lu Jianting Li Xuhui Zhang Yingjun Li Fujian Ma
author_sort	Li Lu
title	Effects of Clay Minerals and External Pressures on Imbibition in Shales
title_short	Effects of Clay Minerals and External Pressures on Imbibition in Shales
title_full	Effects of Clay Minerals and External Pressures on Imbibition in Shales
title_fullStr	Effects of Clay Minerals and External Pressures on Imbibition in Shales
title_full_unstemmed	Effects of Clay Minerals and External Pressures on Imbibition in Shales
title_sort	effects of clay minerals and external pressures on imbibition in shales
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f8b6d788ba514ce1928437823f1e09b8
work_keys_str_mv	AT lilu effectsofclaymineralsandexternalpressuresonimbibitioninshales AT jiantingli effectsofclaymineralsandexternalpressuresonimbibitioninshales AT xuhuizhang effectsofclaymineralsandexternalpressuresonimbibitioninshales AT yingjunli effectsofclaymineralsandexternalpressuresonimbibitioninshales AT fujianma effectsofclaymineralsandexternalpressuresonimbibitioninshales
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Effects of Clay Minerals and External Pressures on Imbibition in Shales

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