Epithermal neutron porosity measurement

Equipment for airborne electromagnetic-induction surveys

Equipment for the continuous automatic seismo-acoustic...

Error correction and calibration of a deep reading...

Error detection in seismic data

Estimating in situ mechanical properties of sediments...

Estimating petrophysical parameters and invasion profile...

Estimating the time of arrival of a seismic wave

Estimation of formation porosity using water measurement

Estimation of multichannel mud characteristics

Estimation of soil properties using waveforms of seismic...

Estimation of transversal motion of the nmr tool during logging

Evaluation of seismic sequence lithology

Excitation and mapping of natural gases of the earth's surface

Exclusion of alpha particles from thoron in uranium detection

Exploration method and apparatus utilizing atmospheric...

Exploration method using electron spin resonance signals...

Exploration system and method

Exploration system for cross-steering and stacking seismic...

Exploration system for discovering deposits of ore, marker...