Crude oil currently extracted on many oil fields of Russia and Kazakhstan has a complex physical-chemical and rheological properties. Approximately 10-20% of the crude oil has a high content of asphaltenes and large amount of paraffin waxes with high melting point. Usually, at low temperature paraffin waxes that present in crude oil tend to precipitate which hinder and sometimes prevents transportation of crude oil.
It’s a well established that content of tar and paraffin waxes in crude oil increases as oilfield aging. This is due to that on earlier stages of production activity an extraction of more mobile, light fraction of crude oil occurs. Further, when applying secondary methods of production activity the extraction of heavier fraction of crude oil occurs. One of the important problems at the production activity is removal of waxes from oil well equipment. Wax build-up lead to decrease in restricted openings of transfer lines and also affects working parts of pumps. As a result the rate of yield decreases and the frequency of necessary repairs increases.