Linear Electromechanical Actuator for Low Frequency Oscillations Excitation in Oil Tubing String

Elastic waves excited in the oil layer are used to intensify oil production. In order to pass from the source above the well to the layer, it is necessary to use low-frequency waves with a low attenuation coefficient. To transfer the highest power into the layer, the waves must be in the mechanical resonance with oil tubing string. The comparative analysis of four types of low-frequency linear electromechanical actuator is presented. The most effective design for use under conditions of high mechanical load is selected. The analysis of dynamic characteristics is carried out by macro modeling. The actuator prototype for increase oil productivity of well is designed and tested at an oil field.