Multiscale simulation of asphaltene deposition in pipeline flows
| Autor: | C. Lira-Galeana, Isidoro García-Cruz, Jorge Alberto Garcia-Martinez, Jennifer de León, Ivan Moncayo-Riascos |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Dissipative particle dynamics Thermodynamics 02 engineering and technology Hematite 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology Hagen–Poiseuille equation 01 natural sciences Surface tension Molecular dynamics Fuel Technology Adsorption 020401 chemical engineering Drag visual_art visual_art.visual_art_medium 0204 chemical engineering 0105 earth and related environmental sciences Asphaltene |
| Zdroj: | Journal of Petroleum Science and Engineering. 183:106376 |
| ISSN: | 0920-4105 |
| DOI: | 10.1016/j.petrol.2019.106376 |
| Popis: | A novel multi-scale approach to asphaltene deposition in pipeline flows is presented. Pipelines are represented by Hematite (Fe2O3) surfaces, whereas Saturates, Aromatics, Resin and Asphaltene fractions (as provided by a SARA analysis) are used to represent a petroleum fluid. Molecular Dynamics (MD) and Dissipative Particle Dynamics (DPD) simulations are used to describe both the fluids and the fluid/surface interactions. The extent of asphaltene deposition in a pipe is calculated through a balance of adhesion (as calculated through MD simulations of the asphaltene-surface interaction) and drag (as represented by a Poiseuille flow in a shear field) forces, in a system of varying flowrates. Models and methods are validated first by different ways: interfacial tension and the hematite/asphaltene and asphaltene adsorption thickness on a glass surface. Two behaviors were found. The first one shows a clear decrease of asphaltene adsorbed thickness as the drag force increases (for Re |
| Databáze: | OpenAIRE |
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