Closed air system seismic wave generator
Closed-loop downhole resonant source
Combination shear wave and compressional wave seismic energy vib
Compact vibrator and seismic monitoring or prospecting...
Composite bandwidth marine vibroseis array
Compound suspension linkage
Continuous shear wave logging apparatus
Control means for pressure fluid vibrators for generating seismi
Controlled implosive downhole seismic source
Controlled phase marine source subarray
Controlled-polarization marine seismic shear-wave source
Coupling and recovering seismic detection sensors
Coupling means for horizontal vibrator
Coupling means for horizontal vibrator
Coupling means for horizontal vibrator with tooth-like projectio
Deadweight dropping type wave source
Deadweight dropping type wave source
Debris ejector for a seismic vibrator
Decoupled borehole sensor
Deep water sound imploder