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Downhole Emitter for Creating a Field of Elastic Vibrations in a Geological Environment
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Engineering and Mining Geophysics 2020, Sep 2020, Volume 2020, p.1 - 6
Abstract
One of the geophysical methods is acoustic cross-hole sounding, which requires emitters of elastic vibrations. This paper presents the results of a study of the hydrodynamic jet Helmholtz oscillator. This device allows you to generate pressure fluctuations of large amplitude, as well as create cavitation jets. The dependences of the amplitude and frequency of the generated oscillations on the fluid flow and external conditions are established. The conditions and the region of generation of stable oscillations are determined. Experimental studies have shown that such an emitter can be effectively used in acoustic cross-hole sounding to create artificial fields of elastic vibrations in geological environments. Such devices will also be useful for acoustic stimulation of the formation during oil production at high pressures, as well as for the creation of cavitation jets at low backpressures in solving various practical problems.