The downhole technique can be used for a wide variety of techniques, including measuring shear waves as a function of depth for static corrections in time-to-depth conversion, or for in-hole reflections to provide detail compared to the reflections acquired at the surface.
In the non-petroleum sector, this technique is primarily used to evaluate shear wave velocity.

Interest in this technique increased in the 1990s after the release of the UBC (Uniform Building Code) and the IBC (International Building Code), which required the Vs characterization of the first 30 m of soil.

There are also various acquisition techniques, from the classic DownWhole to True Interval, to Crosshole, and various analysis techniques such as the direct method (graphical), interval spectrometry and true interval, calculation of equivalent velocities, etc.

With our DoReMi, combined with our SS-BH-5C sensor, which can be customized and available in the double-body version for True Interval, and our GeoExplorer processing software, it is possible to process the data accurately and precisely.