Sidewall contact temperature tool including knife edge sensors f

Sidewall locking downhole seismic signal detector

Signal receiving system able to be coupled with the wall of a we

Signalling device

Simple multishot downhole explosive tool

Single well system for mapping sources of acoustic energy

Single well system for mapping sources of acoustic energy

Sleeve valve for an air gun having a reciprocating shuttle valve

Small powerful hydro gun

Snow field sound imploder

Sonic well logging tool longitudinal wave attenuator

Sonic well logging tool transmitter

Sonic well tool transmitter receiver array including an attenuat

Speaker damper configuration

Spectrally-shaped air gun arrays

Stabilized portable seismic signal transducer

Stabilized reference geophone system for use in downhole environ

Streamlined, readily towable marine seismic energy source...

Stress wave generator

String of sondes