Complexation of Surfactant/β-Cyclodextrin to Inhibit Surfactant Adsorption onto Sand, Kaolin, and Shale for Applications in Enhanced Oil Recovery Processes. Part I: Static Adsorption Analysis

摘要: Surfactant adsorption onto solid surfaces is problematic in some industrial processes, such as surfactant flooding for enhanced oil recovery. In this work, it was hypothesized that the use of a delivery system could prevent surfaces. Therefore, encapsulation sodium dodecyl sulfate (SDS) into hydrophobic core β-cyclodextrin (β-CD) to generate (SDS/β-CD) evaluated work. This complexation characterized using optical and scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR). Dynamic evaluation applied determine effectiveness inhibiting variety adsorbents including sand, mixtures sand–kaolin sand–shale. also applying quartz crystal microbalance technology (QCM-D). The formation morphology confirmed by microscopy, SEM, FT-IR. tests demonstrated approach preventing (up 74 % reduction). QCM-D these observations. Several mechanisms were proposed explain inhibition steric hindrance, self-association inclusion complexes, hydrophilicity increase, disruption hemimicelles formation.