Removal of surface layer anomaly effects

Removal of surface multiples

Removing noise from seismic data obtained from towed seismic...

Resonance scattering seismic method

Resonant energy analysis method and apparatus for seismic data

Resonant frequency modification of piezoelectric transducers

Response waveform characterization of geophysical data

Retriever for a seismic streamer cable

Ribbon termination member

Rod-type multipole source for acoustic well logging

Rod-type multipole source(for) and receiver for acoustic well lo

Roll-along switch

Rotating acoustic transducer head for cement bond evaluation too

Rotating eccentric weight apparatus and method for generating co

Rotational geophone

Rotational geophone