NDLI: Spontaneous imbibition in igneous rocks: effect of KCl concentration, confining pressure, and imbibition direction

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Spontaneous imbibition in igneous rocks: effect of KCl concentration, confining pressure, and imbibition direction

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Changlin Zhou Li Li Rong Zeng Weihua Chen Yuxuan Liu
Abstract	Abstract Understanding spontaneous imbibition helps to determine the fracturing fluid volume and optimize the flowback design. At present, many studies have mainly focused on shale, but few on igneous rocks. As such, in this study, imbibition experiments were conducted on igneous rocks. The effects of KCl concentration, confining pressure, and imbibition direction on the spontaneous imbibition were systematically investigated. This study then introduces a new imbibition capacity index. The results show that KCl concentration has certain inhibitory effects on igneous rock imbibition, which reduce the absorption of clay minerals to liquid. Different imbibition directions result in distinct imbibition volumes. The co-current imbibition process is similar to fluid leak-off, but this rule is not satisfied in countercurrent imbibition, the n of which is fitted as 0.1.0.3. Increasing the confining pressure will slightly decrease the imbibition capacity of igneous rock. Rock imbibition causes a decrease in the surface hardness and physical properties of igneous rock, and increasing the KCl concentration in the fluid will effectively hinder clay swelling.
Related Links	https://doi.org/10.1007/s13202-020-00997-z
ISSN	21900558
e-ISSN	21900566
DOI	10.1007/s13202-020-00997-z
Journal	Journal of Petroleum Exploration and Production Technology
Issue Number	8
Volume Number	10
Language	English
Publisher	SpringerOpen
Publisher Place	Switzerland
Access Restriction	Open
Subject Keyword	Petroleum Refining. Petroleum Products Petrology Spontaneous Imbibition Hydraulic Fracturing Kcl Concentration Confining Pressure Imbibition Direction
Content Type	Text
Resource Type	Article
Subject	Energy Geotechnical Engineering and Engineering Geology

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