Eccentering arm
Effective permeability
Effective porosity
Effluent
Eh
Elastic collision
Elastic constants
Elastic properties of rocks
Elastic scattering
Elastic wave
Electrical coring
Electrical log
Electrical survey
Electrical zero
Electric log
Electrochemical potential
Electrode
Electrofiltration potential
Electrokinetic potential
Electrolog
Electrolyte
Electromagnetic casing inspection log
Electromagnetic propagation log
Electromagnetic propagation tool
Electromagnetic thickness log
Electromotive force
Electron density
Electronic casing caliper logging
Electron volt
Electropolarization potential
Elevation
Elevator bails
Elevators
Embrittlement
Empty hole
Emulsion
Endothermic
Enhanced oil recovery
Environmental calibrator
Environmental oil-emulsion mud
Epilog
Epithermal neutron
Evaporite
Excavation effect
Exchange cation
Excursion
Exothermic
Expendable gun
Exploratory well
External phase
Extrusive