Geophysical Log Types and Codes

Acoustic AV Acoustic Velocity (Sonic)

Caliper CT Caliper, Three Arm

Electric ER Single-point Resistance

EP Spontaneous Potential (SP)

EL Long-normal Resistivity (Res64N)

ES Short-normal Resistivity (Res16N)

EF Focused Resistivity (Guard)

ET Lateral Resistivity

Electromagnetic MI Electromagnetic Induction (EM)

Nuclear NG Gamma

Other Log Types and Codes

CO Well Construction

LI Lithologic