Borehole

FPM Geophysical & UXO Services’ geophysicists employ a wide variety of downhole techniques dependent on site specific objectives.



Geologic information that can be obtained from downhole surveys include:

  • Lithology
  • Depth of casing bottom
  • Subsurface temperature
  • Sediment porosity/permeability
  • Condition of well casing/screen
  • Formation thickness and attitude
  • Location and orientation of fractures
  • Presences and depth of water bearing fractures
borehole data

Geophysical borehole logging involves measuring the physical properties of the surrounding medium with a sensor located in a borehole. It provides information that cannot be obtained using other techniques, and it is essential for many purposes, including correlation, plume delineation, and groundwater flow modeling.

A common logging suite involves using resistivity, EM induction, and natural gamma methods to obtain a better understanding of subsurface geology. Resistivity, EM induction, and natural gamma logs provide detailed stratigraphic information. The logs are continuous and offer a cost effective way to correlate geology from borehole to borehole.