Epithermal die-away porosity logging

Epithermal neutron decay logging

Epithermal neutron detector having enhanced efficiency

Epithermal neutron die-away logging

Epithermal neutron lifetime logging

Epithermal neutron porosity measurement

Epithermal neutron porosity measurement

Estimation of formation porosity using water measurement

Evaluation of the interaction with radiant energy of substances

Evaluation of the interaction with radiant energy of substances

Evaluation of the interaction with radiant energy of substances

Fiber optic tomographic imaging of borehole fluids

Fiber optic well logging means and method

Flowshot technique

Flowshot technique

Fluid density monitor

Focal plane infrared readout circuit with automatic...

Focused detection logging technique

Focused nuclear interface survey instrument and method of determ

Force and acceleration sensor using four wave mixing technique