Enhancing CO2 desorption from crude oil by ultrasound

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HighlightsIt is very difficult to strip CO2 from crude oil through pressure release alone.Using ultrasound can significantly enhance CO2 desorption from crude oil.Given frequency with power above threshold produce a second peak of desorption rate.An excessive desorption rate produces many bubbles causing harms of “tank oil-overs”.In CO2 flooding, it is difficult to strip CO2 from the produced fluids through pressure release alone, which may erode the equipment following the separator. Experiments are conducted to study how ultrasound enhances desorption of CO2 from crude oil. An analysis of ultrasonic influence on the desorption rate and the percentage of CO2 desorbed reveals the phenomena and variation rules of desorption peaks, second peaks, oil bubbling and power threshold.

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