Downhole seismic exploration device and apparatus
Downhole seismic source
Downhole seismic source
Downhole seismic source
Downhole seismic sources
Downhole seismic-sonic receiver
Drive assembly for acoustic sources
Drive assembly for acoustic sources
Drive assembly for acoustic sources
Dual mode multiple-element resonant cavity piezoceramic borehole
Dual mode seismic source vibrator
Dual-mode hydraulic vibrator
Earth reaction seismic source
Echographic technique-based method and apparatus to detect struc
Elastic wave exploration tool for wells
Electrically inclination compensated device for picking up...
Electro-hydraulic dipole vibrator
Electroacoustic transducer with mechanical impedance transformer
Electrodynamic transducer head
Enclosures for containing transducers and electronics on a...