Abstract
Enormous production losses have ascended in diverse operational and technical issues due to deposition of heavy crude oil (HCO) in various production components like tubing, near well bore (skin formation), surface storage tank, pipeline blockage, etc. Existing methods employed for the dissolution of HCO are either cumbersome or use organic solvents, which are hazardous to the environment. This study presents findings on the enhanced dissolution of HCO using low waxy crude oil (LWC) in the presence of ionic liquid (IL). The use of ILs is found to be compatible with the polar moieties in heavy crude oil, such as resins, aromatics, and asphaltenes, enhancing its dissolution. Twelve ionic liquids were tested for the dissolution of HCO using LWC. The dissolution of HCO was performed and confirmed using gravimetric analyses, ultraviolet–visible (UV–vis) spectrophotometry, Fourier transform-infrared spectroscopy (FT-IR), 13C-nuclear magnetic resonance (13C NMR), and the interfacial tension (IFT) measurements. T...
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