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