Hager-Richter specializes in surface and borehole geophysics

Hager-Richter Specializes in Surface and Borehole Geophysics

Surface Methods

  • Shear Wave Velocity for Seismic Design (MASW, ReMi)
  • Seismic Refraction (including refraction tomography)
  • Seismic Reflection
  • Ground Penetrating Radar (GPR)
  • Electrical Resistivity Imaging
  • Electromagnetic Induction (EM61, EM31, EM34, EM38)
  • Very Low Fequency (VLF)
  • Magnetics
  • Gravity

Borehole Methods

  • Crosshole Seismic Testing
  • Parallel Seismic Testing
  • Crosshole Seismic Tomography
  • Acoustic Televiewer (ATV) Logging
  • Optical Televiewer (OTV) Logging
  • High Resolution Color Borehole Video Logging
  • Conventional Geophysical Logging: fluid temperature, fluid resistivity, three-arm caliper, natural gamma ray, heat pulse flow meter, single point resistance, spontaneous potential (SP) and normal resistivity.

Additional Core Competencies

  • Precision Subsurface Utility Location (PUL) Surveys
  • Nondestructive Testing (NDT)
  • Video Logging of rock sockets and casing conditions in deep drilled shafts for caissons
  • Vibration Monitoring
  • Litigation Support