It is determined, that the main cause of mineral's formation in morphologically complex sections of experimental units, steam boiler pipes, oil producing wells and wells, drilled through hydrothermal systems, is drastic reduction, almost down to nil, of velocity and dynamic pressure in zones of aerohydrodynamic shadow and static pressure increase. It is shown, that such process results in solutions boiling up, increase of temperature, alkalinity, concentration and other interrelated parameters. It is recomended to use Drozdova's oxilons for cleaning steam boiler pipes and oil producing wells from mineral salt.