Downhole testing

Downhole geophysics offers a fast, digital way to acquire detailed oriented information from borehole investigations, with various methods and products available.

All techniques log a hole in a fraction of the time taken to drill, measuring every 2-20mm vertically. The process is digital, reducing data entry and error, and data can be available for immediate use. The result is a digital record of rock or soil properties, and for optical and acoustic televiewers, a 3D image of the drillhole wall.

Downhole Testing Applications:

  • Coal exploration logging
  • Water well completion logging
  • Cement bond logging
  • Well casing inspection
  • Cross-hole seismic
  • Geotechnical parameters
    • Bulk Density (ρ)
    • Compressional Wave Velocity (Vp)
    • Shear Wave Velocity (Vs)
    • Rock Mass Quality (Q)
    • Structure Orientation
    • Unconfined Compressive Strength (UCS)
    • Insitu Stress Orientation (σ3)

Downhole Testing Techniques

  • Full-waveform sonic with single arm caliper Century)
  • Dual-density combination tool (Century)
    • Natural gamma
    • Guard resistivity
    • Single arm caliper
  • Compensated Density (Century)
  • Optical televiewer (ALT)
  • Optical televiewer with Natural Gamma
  • Acoustic televiewer (ALT)
  • 3 arm caliper (Mount Sopris)
  • Inclinometer