Pan Bin, Yin Xia, Iglauer Stefan
Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, Calgary, Canada.
Petroleum Exploration and Production Research Institute, SINOPEC, No.31, Xueyuan Road, Beijing, China.
Adv Colloid Interface Sci. 2020 Nov;285:102266. doi: 10.1016/j.cis.2020.102266. Epub 2020 Sep 15.
Clay is one of the most important mineral components in geological formations, and it is widely used in many industrial applications. One clay property, which is of key importance in many areas, e.g. mineral processing, agriculture, fundamental geologic understanding, hydrology, oil/water separation and multi-phase fluid flow, is clay wettability. However, clay wettability is a complex parameter which is determined by clay surface chemistry, in-situ aqueous and non-aqueous fluid chemistries, and geo-thermal conditions. Thus, a systematic review of published results on the wettability of six different clay minerals (kaolinite, montmorillonite, illite, mica, talc and pyrophyllite) is provided here, spanning from experimental studies to molecular dynamics simulations. This is integrated with a critical discussion to elucidate the origin of significant inconsistencies in the reported data. Finally, a range of conclusions is clearly established and a future outlook is given. This review will thus advance the understanding of clay wettability and provide guidance for the various applications discussed.
黏土是地质构造中最重要的矿物成分之一，在许多工业应用中有着广泛的用途。黏土的一项特性，即在矿物加工、农业、基础地质认识、水文、油水分离及多相流体流动等诸多领域至关重要的特性，是黏土润湿性。然而，黏土润湿性是一个复杂的参数，它由黏土表面化学、原位水相和非水相流体化学以及地热条件所决定。因此，本文对已发表的关于六种不同黏土矿物（高岭石、蒙脱石、伊利石、云母、滑石和叶蜡石）润湿性的研究结果进行了系统综述，涵盖了从实验研究到分子动力学模拟的内容。同时结合了批判性讨论，以阐明报告数据中显著不一致的根源。最后，明确得出了一系列结论并给出了未来展望。这样一来，本综述将增进对黏土润湿性的理解，并为所讨论的各种应用提供指导。
