Method and apparatus for generating seismic waves

Method and apparatus for generation of acoustic energy

Method and apparatus for imparting a seismic pulse to the earth

Method and apparatus for inspecting well bore casing

Method and apparatus for installing a sensor array

Method and apparatus for installing electronic equipment below s

Method and apparatus for measuring seismic energy imparted...

Method and apparatus for monitoring and controlling a multiplici

Method and apparatus for reducing and extracting wing-tip...

Method and apparatus for reducing the stretch of an elastomeric

Method and apparatus for seismic exploration

Method and apparatus for seismically surveying an earth...

Method and apparatus for sensing when a seismic gas exploder is

Method and apparatus for signal improvement in marine seismic ex

Method and apparatus for suppressing waves in a borehole

Method and apparatus for the downhole measurement of elastic roc

Method and apparatus for the production of seismic shocks

Method and apparatus for tube-wave suppression

Method and apparatus for ultrasonic scanning of a borehole havin

Method and apparatus using acoustic sensor for sub-surface...