Prospects of seismic exploration based on monochromatic seismic sources
https://doi.org/10.18303/2619-1563-2025-3-12
Abstract
We study the possibility of expanding the low-frequency range of land seismic exploration using monochromatic seismic sources. Low frequencies are particularly important for the application of seismic full-wave inversion (FWI). Generating frequencies below 5 Hz presents a significant challenge for modern hydraulic vibrators. The authors investigate the possibility of using lower-frequency unbalanced vibrators in monochromatic signal mode. We implemented a frequency-domain full-wave inversion for testing the fundamental possibility of gradually constructing a velocity model from monochromatic signals with an incremental frequency step of 2 Hz. The resulting velocity model is better than the standard FWI of data from a continuous sweep signal starting from 5 Hz. This study demonstrates the potential of using monochromatic sources to expand the lower frequency range of seismic exploration.
Keywords
seismic exploration,
eccentric vibroseis sources,
monochromatic seismic sources,
full wave inversion (FWI) method,
Helmholtz equation,
numerical methods and experiments
Supporting agencies: the study was carried out as part of government assignment to the Russian Academy of Sciences in basic research, Project FWZZ-2022-0017.
About the Authors
Alexandr S. Serdyukov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS; N.A. Chinakal Institute of Mining, SB RAS
Россия
Россия
Koptyug Ave., 3, Novosibirsk, 630090
Krasny Ave., 54, Novosibirsk, 630091
Anton A. Duchkov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Россия
Россия
Koptyug Ave., 3, Novosibirsk, 630090
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Review
For citations:
Serdyukov A.S., Duchkov A.A. Prospects of seismic exploration based on monochromatic seismic sources. Russian Journal of Geophysical Technologies. 2025;(3):12–26. (In Russ.) https://doi.org/10.18303/2619-1563-2025-3-12
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