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Seismic Applications of Downhole DAS
Ariel Lellouch1, Biondo L Biondi1
1Department of Geophysics, Stanford University, Stanford, CA 94025, USA.
Sensors (Basel, Switzerland)
|April 30, 2021
Summary
Distributed Acoustic Sensing (DAS) offers high-resolution seismic data acquisition in boreholes. This review explores its seismic applications, limitations, and future potential for downhole measurements.
Area of Science:
- Geophysics
- Seismology
- Sensor Technology
Background:
- Distributed Acoustic Sensing (DAS) is increasingly utilized in industry and academia.
- DAS provides high spatial and temporal resolution for data acquisition.
- A key advantage of DAS is its capability for in-borehole seismic signal recording at depth.
Purpose of the Study:
- To review the diverse seismic applications, both passive and active, of downhole DAS.
- To highlight the current limitations of DAS technology in downhole environments.
- To discuss potential strategies for overcoming these limitations.
Main Methods:
- Literature review of existing studies on downhole DAS applications.
- Analysis of passive seismic monitoring techniques using DAS.
- Analysis of active seismic surveys employing DAS.
Main Results:
- DAS enables continuous seismic sampling along borehole trajectories with minimal operational disruption.
- Achieving such high-resolution downhole data is difficult with conventional tools.
- Various passive and active seismic methods are feasible with downhole DAS.
Conclusions:
- Downhole DAS is a powerful tool for seismic studies, offering unprecedented resolution.
- Addressing current limitations is crucial for broader adoption and enhanced performance.
- Future research should focus on overcoming DAS limitations for improved downhole seismic monitoring.
