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- W4386697720 abstract "Continuing our investigation into the nature of interactions between wax, asphaltenes, and paraffin inhibitors (PIs) in crude oil in order to better guide PI-based flow assurance strategies, the effects of added asphaltenes and PI separately and in combination in three different base oils containing added wax were studied by examining cross-polarization microscopy images, dynamic viscosity cooling–heating curves, and cold finger wax deposition amounts and compositional analysis. Treatments that eventuate in more solvated, less interconnected, i.e., discrete morphologies reduce oil viscosity as much as 98%. The ability of asphaltenes to function as a PI or enhance the function of a PI is greater in oils containing smaller aromatic and resin components. In many cases, treatments that lower oil viscosity also reduce the extent of paraffin deposition; however, in some cases, networks consisting of small wax crystals that do not notably impede flow nevertheless result in substantially increased wax deposition. Treatment with asphaltenes or PI appears to be governed by the morphological characteristics of wax domains rather than their composition. However, trends involving minor differences in the composition of wax deposits agree with earlier conclusions by these authors that the efficacy of PIs having higher chain densities, ρsc, are more strongly dependent on wax chain length than those having lower ρsc values, and that the presence of asphaltenes reduces this effect." @default.
- W4386697720 created "2023-09-14" @default.
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- W4386697720 date "2023-09-13" @default.
- W4386697720 modified "2023-10-18" @default.
- W4386697720 title "Effects of Added Asphaltenes and Paraffin Inhibitor on Wax Stability and Deposition in Oils of Varying Complexity" @default.
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- W4386697720 doi "https://doi.org/10.1021/acs.energyfuels.3c02818" @default.
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