To identify basic properties of the rocks
Borehole Imager – for fracture identification
Dipole Sonic – for strength of rock
Rotary Sidewall Core – physical sample
Reservoir Pressure Test and Sampling: permeability measurement and fluid sampling
Vertical Seismic Profiling
Production Logging - for fracture identification (Geothermal)
Other High tech, Etc.
Explosive and Non-Explosive Cutter
FPIT/Back-off