Automatic presetting of vibrator phase-lock circuits
Automatic seismic pattern recognition method
Automatic system and method for testing marine streamers of...
Autonomous acoustic source for ocean tomography
Axially extended downhole seismic source
Azimuthal binning of density and porosity data from an earth...
Azimuthal measurement-while-drilling (mwd) tool
Azimuthal nmr imaging of formation properties from a wellbore
Azimuthal nmr imaging while drilling
Azimuthal toroid array for resistivity logging system
Azimuthally sensitive resistivity logging tool