Asphaltene adsorption on clays and crude oil reservoir rocks

A molecular dynamics investigation into the adsorption behavior inside {001} kaolinite and {1014} calcite nano-scale channels: the case with confined hydrocarbon liquid, acid gases, and water

“…The findings also conclude the wettability and dynamical properties, to be affected by confinement size of pores of reservoir rocks (Al-Quraishi and Khairy 2005;Cui et al 2003;Standnes and Austad 2000;Yuan et al 2015). A few investigations were also directed towards analysis of adsorption of organic molecules over clay (Hu et al 2014;Pernyeszi et al 1998;Wang et al 2013) (mainly kaolinite), as well as non-clay (Cooke et al 2010;de Leeuw and Parker 1998;Freeman et al 2009;Guiwu et al 2009;Keller et al 2015;Sakuma et al 2014) (mainly calcite) surfaces. In this regards, the main focus has been devoted to the {001} kaolinite or {1014} calcite structures, on the premise of holding the primary cleavage planes (Miller et al 2007;Sekkal and Zaoui 2013;Titiloye et al 1993;Zielke et al 2015).…”

Mineral-templated growth of natural graphite films

“…Despite this multitude of factors, adsorption of polar organic molecules such as asphaltenes has been observed on many different mineral surfaces in petroleum-rich rocks (Balabin and Syunyaev, 2008;Buckley;Lebedeva and Fogden, 2011;Mendoza de la Cruz et al, 2009;Pernyeszi et al, 1998;Zheng et al, 2001). It is thus possible that adsorption also occurred on the surface of quartz crystals in the Zaonega organic-rich rocks, for instance, by attraction of polar macromolecules to negatively charged silanol (Si-O -) groups (Fig.7c) (Zheng et al, 2001).…”

Fractionation of Asphaltenes in Understanding Their Role in Petroleum Emulsion Stability and Fouling

“…19,26,59 A range of experimental techniques have been adopted to study the adsorption of asphaltenes onto several different substrates including silica, [60][61][62] [69][70][71][72][73][74][75][76][77][78] Using quartz crystal microbalance with dissipation (QCM-D), asphaltene adsorption and film formation have been studied in real time. 51,60,61,64-66 X-ray photoelectron spectroscopy (XPS), 65,75 X-ray diffraction (XRD), 72,74,75 small-angle X-ray scattering (SAXS), 74 Fourier transform infrared spectroscopy (FTIR) 71,72,74 and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) 73 have been applied to characterize the surface modification by asphaltene adsorption. It is however not straightforward to compare the results from different adsorption studies since asphaltene adsorption is a complex process affected by many aspects such as source of asphaltenes, type of solvents (quality and composition), moisture content of solvents, flow condition, temperature, etc.…”