Seismic method for logging position of a deep borehole in the ea

Seismic methods having extended energy release

Seismic pneumatic energy source with flap valves for attenuation

Seismic pulse generator

Seismic pulse generator

Seismic shear wave vibrator with telescoping blade

Seismic signal generating apparatus

Seismic signal generator with a self-expanding vibrator support

Seismic signal source

Seismic sound source

Seismic source

Seismic source

Seismic source for use under water

Seismic source for use underwater

Seismic source using self-propelled projectile

Seismic source with no reaction mass

Seismic transducer baseplate and housing assembly

Seismic transducer construction

Seismic vibration source

Seismic vibrator and method for improving the output of a seismi