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Journal of Mining Sciences

2020 year, number 5

Downhole Periodic Electromagnetic Seismic Source Designs

A. O. Kordubailo, B. F. Simonov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: Downhole seismic source, structural layout, comparative analysis, cross-well seismic imaging, oil recovery enhancement, electromagnetic linear motor, impact energy, drive, pressure impulse

Abstract

Advancement of wave action stimulation and cross-well seismic imaging in mineral mining governs the need for downhole sources of elastic vibrations. The presented periodic electromagnetic seismic source is equipped with a mechanical-hydraulic drive for fixturing in a hole and for impulse transition to rock, and an electromagnetic impactor for pressure pulse generation. This article presents the experimental studies into the operation of the seismic source of three structural layouts. The features of the operation are discussed. The supply voltage dependences of the main parameters of the seismic source are obtained, and the practical application recommendations are formulated.