WELLOG                                 ELECTRIC LOGS

 

 

Revised 11-07-2016

WELLOG 2007-2016

All Rights Reserved

 

ELECTRIC LOGS:

 

Electric logs are a select group of logs that use the flow of electric current in the formations surrounding a well for measurement. The names of the logs that fall within this group and their hydrologic applicability are as follows:

 

NAME:                                                  Lithology         Bed                  Formation        Invaded           Flushed            Mud (1)       Formation

                                                            Correlation      Thickness         Resistivity       Resistivity       Resistivity            Resistivity       water Resistivity

 

1. Single Point Resistance (SPR)        X                      X

 

2. Short Normal                                   X                      X                                              X

 

3. Long Normal                                                                                    X                                                                                              X

 

4. Lateral Device                                                                                 X                                                                                              X

 

5. Wall Resistivity                                                       X                                                                      X                      X

 

5. Focused resistivity (Guard)            X                      X                      X                                                                                              X

 

6. Micro focused                                                          X                                                                      X

 

7. Induction                                         X                      X                      X                      X

 

8. Spontaneous Potential (SP)           X                      X

 

 

Note: (1) Use mud kit for mud pit samples

 

Links to pages that give expanded information on these logs are provided above.