INFLUENCE OF THE TYPE OF WATER ON THE CORROSION PROPERTIES OF THE "OIMASHA SALT -H2O " SYSTEM
Abstract
Jumming is the most widespread type of action on wells, which is a set of measures for selecting, preparation and injecting into the well special muffling fluids (MF) that ensure safe and safe preventive work. The natural salt of the Oimasha deposit can be considered as a cheap raw material component for the preparation of a dampening fluid. The work focuses on the influence of water type and Oimasha salt concentration on steel corrosion resistance of Art. 3 brand. Chemical analysis of Oimasha salt showed that Oimasha salt does not cake, does not lump, the size of lumps does not > 1 cm. The solubility of the salt in marine H2O is 2.25% higher than in waste H2O. The maximum density of H2O solutions based on marine (1,190 kg/m3) and waste (1,163 kg/m3) H2O is achieved with equal salt consumption (247-245 kg/t). In saline solutions, the content of insoluble substances does not exceed 0.6%, which eliminates the risk of salt deposits. Studies on the influence of different water types on corrosion behaviour of steel in the presence of Oimasha salt have shown that the highest V corrosion rate is observed in marine H2O, which is 1.8 times higher than in mixed water and 2,3 times more than wasted H2O. The corrosion rate in waters with the addition of Oimasha salt increases in the following order: Vmarine > Vmixed > Vwaste > Vtap.
