Thickness dependence of magneto-optical properties of Co-wedgeh'd-wedge sandwich was investigated employing the magneto-optical micro-magnetometer and spectroscopic technique. At the fixed CO-layer thickness, Transverse Kerr effect (TKE) decreased with increasing Pd-thickness and oscillated along with Pd-thickness periodically. The period of the oscillation was equal to about 1.2 nm. The oscillatory behavior of TKE was ascribed to the spin-polarized quantum well states in the Pd-layer. It was discovered that the Pd layer exerted an influence upon the magneto-optical properties of the Co-wedge more significantly in the ultraviolet photon energy range.Index termsmagneto-optical effect, sandwich, wedge-shaped layer, quantum size effect.

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The purpose of this article is the research aimed at the improvement of the quality of hydraulic equipment, namely, investigation of the use of hydraulic drive of sucker-rod pump 120-6-24 in oil and gas industry as an alternative to import substitution of small-sized pumps. Nowadays, at the fields of Western Siberia, it is necessary to replace outmoded and worn-out equipment with modern equipment of proven efficiency. To a greater extent, the imported equipment is used in oil industry. For Russian industry import substitution is one of the key tasks. This article considers the task of wells operation with sucker rod pumping units with a surface hydraulic drive with an analysis of its performance. As an alternative to import substitution for small-sized pumps, it is recommended to use innovative equipment - a highly efficient hydraulic drive of a sucker rod pumping unit, which provides a general increase in the efficiency of production processes during operation, increasing oil production during well operation in optimal mode. The use of this drive leads to a decrease in the costs of oil and gas production enterprises by reducing the level of oil deficit and prevents equipment failure in oil fields. The method of oil production with a hydraulic drive hydraulic drive of sucker-rod pump 120-6-24 considered in this article is widely applied in oil and gas industry and became a valid alternative to small-sized pumps.