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Downhole Seismic Testing System

Geophysical Survey

Downhole Seismic Testing Equipment

GALERIO utilizes downhole seismic testing equipment to evaluate subsurface seismic wave velocities and dynamic soil and rock properties. The method supports geotechnical site characterization, seismic site response assessment, and engineering investigations for infrastructure development. Downhole seismic testing measures seismic wave travel times between a surface source and receivers positioned at different depths within a borehole. The recorded measurements are interpreted to develop subsurface seismic velocity profiles.

Equipment overview

How it supports an investigation

  • **Main Components**
  • - **Seismic Data Acquisition System:** Summit seismic recorder for capturing and recording seismic wave signals.
  • - **Downhole Geophone Probe:** Borehole sensor assembly used to detect seismic wave arrivals at selected depths.
  • - **Signal Cable and Reel:** Connects the downhole probe to the recording equipment.
  • - **Borehole Probe Positioning Accessories:** Used to position and secure the sensor during testing.
  • - **Seismic Wave Source:** Generates seismic waves at the ground surface for measurement.
  • - **Data Processing Software:** Supports analysis of seismic travel times and velocity profiles.
  • **Testing Method**
  • Downhole seismic testing measures seismic wave travel times between a surface source and receivers positioned at different depths within a borehole. The recorded measurements are interpreted to develop subsurface seismic velocity profiles.
  • **Uses and Applications**
  • - Determination of shear wave velocity (Vs) profiles
  • - Measurement of compressional wave velocity (Vp), where supported by the equipment and testing configuration
  • - Assessment of dynamic soil and rock properties
  • - Geotechnical and foundation engineering investigations
  • - Seismic site characterization and ground response studies
  • - Supporting data for seismic hazard assessment and infrastructure planning

Services and applications

What GALERIO can do

  • Determination of shear wave velocity (Vs) profiles
  • Measurement of compressional wave velocity (Vp), where supported by the equipment and testing configuration
  • Assessment of dynamic soil and rock properties
  • Geotechnical and foundation engineering investigations
  • Seismic site characterization and ground response studies
  • Supporting data for seismic hazard assessment and infrastructure planning

Project-specific enquiries

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