| [[Drilling problems#Hole instability|Borehole condition]], quality control
|-
|-
−
| Neutron log
+
| [[Basic open hole tools#Compensated neutron|Neutron]] log
−
| Porosity, lithology (with sonic, density)
+
| Porosity, [[Quick-look lithology from logs|lithology]] (with sonic, density)
|-
|-
−
| Density log
+
| [[Basic open hole tools#Density|Density]] log
−
| Lithology (coal), [[porosity]] (with neutron)
+
| [[Quick-look lithology from logs#Lithological responses|Lithology]] (coal), [[porosity]] [[Quick-look lithology from logs#Neutron and density logs combined|(with neutron)]]