Nuclear Magnetic Resonance (NMR)
For subsurface Water Resources or Environmental Investigation, directly measure the volume of Mobile Water (water that freely moves through pores) and Bound Water (capillary and clay-bound) in rock formation along with Total Porosity. From there, accurately estimate Hydraulic Conductivity and Transmissivity.
The NMR tool creates a static magnetic field within the surrounding formation, aligning the protons in the hydrogen atoms in the pore space. Radio frequencies are pulsed, and resonance frequencies of the protons are recorded as echo trains. The energy and decay rate of these echo trains are a function of porosity and the nature of the pore structure. It can be conducted in open or non-metallic cased holes.
T2 Distribution, Total Porosity, Mobile Porosity, Hydraulic Conductivity, and Transmissivity.