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An oil-tolerant and salt-resistant aqueous foam system for heavy oil transportation
Jie Sun,Jiaqiang Jing,Neima Brauner,Li Han,Amos Ullmann 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
An oil-tolerant and salt-resistant aqueous foam system was screened out as a possible lubricant to enable cold heavy oil transportation. The microstructures and viscoelasticity and effects of heavy oil, salt and temperature on the foam stability were investigated and new rheological and drainage models were established. The results indicate the foam with multilayered shells belongs to a special microcellular foam. The viscoelasticity could be neglected due to its low relaxation time. The drainage process can be divided into three stages. The foam with quality of 67.9% maintains great stability at high oil and salt concentrations and appropriate elevated temperature.