... their efficiency pumping viscosity and abrasive liquids. Laminar pumps which have reliable and simple constructions are able to pump black oil, mud fluid, mud and etc. Сonclusions Laminar pumps could be used in oil industry to pump clean and abrasive viscosity liquids. An application of pumping mud fluid is given in this article. В.А. Бендерович Э.Д. Лунаци А.В. Ноздрин А.Е. Шеина

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