In the course of the research was conducted short-term and long-term ultrasonic treatment samples of high viscosity structured oil content of asphaltenes 15-16%. The results of measurements and calculations for short ultrasonic processing of high-viscosity oil show that the rheological dependencies there are intervals of shear rate, showing a decrease or increase in viscosity. Prolonged ultrasonic treatment does not lead to qualitative changes in the colloid-dispersed structure. After ultrasonic treatment of the structured oil can be observed as positive effects (reduced viscosity) and negative effects (increase in viscosity, precipitation, clogging of the pore space of the reservoir). For each case (individual type of oil, reservoir conditions, the power source of ultrasound), it is necessary to determine the appropriate processing time for achieving maximum positive effect.
Department of Physics, Faculty of Development Oil and Gas Reservoirs, I.M. Cubkin Russian State University of Oil and Gas. Moscow 119991, Russia.
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