Seismic sources

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

Simple multishot downhole explosive tool

Sonic well logging tool longitudinal wave attenuator

Sonic well logging tool transmitter

Sonic well tool transmitter receiver array including an attenuat

Stabilized reference geophone system for use in downhole environ

String of sondes

Suspended structure for coupling seismic sources to the walls of

Synchronized acoustic source

Synchronized acoustic source

System and method for determining the distribution and orientati

System and method for monitoring drill string characteristics du

System and method of protecting instruments from down-hole fluid

System and method of protecting optical elements from down-hole

System for generating a seismic signal in a borehole

System for transmitting energy through an apparatus usable for s

System intended for permanent installation of measuring...