T-bar base plate for a seismic signal transducer

Target plate for impulse-type acoustic signal generator

Telescoping actuator for impulsive seismic source

Telescoping tube omni-directional shear wave vibrator

Three-component borehole wall-locking seismic detector

Time delay source coding

Timing correction methods for seismic energy source operation

Torsional shear wave generator

Torsional wave logging tool

Towed land cable

Tracking bandpass filter for conditioning vibrator accelerometer

Transducer for acoustic logging

Transducer for inducing seismic signals into an elastic medium

Transducer forming compression and shear waves for use in acoust

Transducer system for use with borehole televiewer logging tool

Transportable hydraulic seismic transducer

Transporter for low energy seismic source

Transverse wave logger

Tube-wave attenuation method, system and apparatus for use with

Tubewave damper probe for seismic applications