Petroleum Science >2025,??Issue1:??- DOI: https://doi.org/10.1016/j.petsci.2024.09.012
Adsorption and retention of fracturing fluid and its impact on gas transport in tight sandstone with different clay minerals Open?Access
文章信息
作者：Yi-Jun Wang, Li-Jun You, Jian Yang, Yi-Li Kang, Ming-Jun Chen, Jia-Jia Bai, Jian Tian
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引用方式：Yi-Jun Wang, Li-Jun You, Jian Yang, Yi-Li Kang, Ming-Jun Chen, Jia-Jia Bai, Jian Tian, Adsorption and retention of fracturing fluid and its impact on gas transport in tight sandstone with different clay minerals, Petroleum Science, Volume 22, Issue 1, 2025, Pages 370-383, https://doi.org/10.1016/j.petsci.2024.09.012.
文章摘要
Abstract: To elucidate the adsorption characteristics and retention mechanisms of fracturing fluids in diverse clay minerals, we conducted on-line nuclear magnetic resonance (NMR) and atomic force microscopy (AFM) experiments. The depth and extent of solid phase damage are determined by the ratio between the size of fine fractions in fracturing fluid residue and the pore-throat size in experiments. Poor physical properties (K??0.5 mD) combined with a scattered distribution of retained fracturing fluid is associated with high gas phase recovery permeability, whereas a continuous sheet-like distribution results in low recovery permeability. The expansive surface area and presence of filamentous illite minerals facilitate the multiple winding and adsorption of fracturing fluids, demonstrating strong hydrogen-bonding, multi-layering and multiple adsorption properties. The geological characteristics of the main gas formations exhibit significant variation, and the severity of damage caused by fracturing fluids occurs in diverse sequences. To address this issue, a differentiated strategy for optimizing fracturing fluids has been proposed.
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Keywords: Clay minerals; Formation damage; Fracturing fluid retention distribution; Adsorption morphology