Background. In oil industry the problem of undesirable sediments formation in oil and gas wells and operating equipment leads to oil reservoir zonal damage, well production rate decrease and operating costs increase. Aims and Objectives. To investigate the effect of a new electromagnetic installation (EMI) on the inhibition of downhole equipment salt formation and the acute toxic exposure of generated electromagnetic field. X-ray diffraction method, piloti-ndustrial tests. Rezults. In EMI an electromagnetic force is generated by axial winding of the core of the electromagnetic emitter, the resulting vector is directed along the axis of the downhole equipment; and the magnetomotive force is formed by means of the orthogonal winding, the resulting vector is directed along the axis of the downhole equipment. The influence of the electromagnetic field created by the EMI on the crystallization process of the carbonate calcium and the structure of the formed CaCO crystals from supersaturated aqueous solutions in the model system CaCl - NaNSO at 80 С is studied. As the result of X-ray diffraction method usage it was showed that while electromagnetic field affection a decrease in the average particle size of CaCO at 31 μm and aragonite preferential formation were observed. The obtained data of pilot-industrial tests of the EPI showed the effectiveness of its application in salt sediments control in wells equipped with electric centrifugal pumps. While the experiment of determination of the electromagnetic field effect produced by the electromagnetic installation on daphnia, no significant effect of irradiation was detected: no daphnia death was observed.