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Abstract

Summary

Distributed acoustical sensing (DAS) is a new kind of elastic wave signals recorders, and has been applied a lot in borehole for monitoring of hydraulic fracturing projects ( ). Therefore, the elastic wavefield response of microseismic events for DAS has been studied a lot (Zhang et al., 2020; Vera Rodriguez and Wuestefeld, 2020; Luo et al., 2021). Recently, distributed acoustic sensing (DAS) has been applied for near surface velocities imaging and attracted many researchers’ attention ( ). This abstract focuses on building a three-dimensional numerical model for Rayleigh surface wave response for a phase-sensitive optical time domain reflectometry (ϕ-OTDR) DAS system. On the basis of this numerical model, not only can the characteristics of DAS data under different fiber layout methods be further studied, but it can also provide a basis for waveform inversion and imaging.

© EAGE Publications BV
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2024-05-13
2025-12-14

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References

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/content/papers/10.3997/2214-4609.202472035
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Three-Dimensional Numerical Modelling of Rayleigh Wavefield Response for DAS
Conference Proceedings 2024, 1 (2024); https://doi.org/10.3997/2214-4609.202472035
/content/papers/10.3997/2214-4609.202472035
/content/papers/10.3997/2214-4609.202472035
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