Method of and apparatus for generating shear seismic waves

Method of coupling a seimic detector module to the wall of a bor

Method of coupling a seismic detector module to the wall of a bo

Method of generating a seismic signal employing a water piston

Method of land seismic exploration using flexible tubes

Method of loggging an inclined wellbore

Method of seismic evaluation of subterranean strata

Methods and apparatus for the generation and transmission of sei

Methods and apparatus for use in detecting seismic waves in...

Methods and apparatus for use in generating and transmitting aco

Methods and apparatus of suppressing tube waves within a...

Methods and apparatus of suppressing tube waves within a...

Methods for measurement, analysis and assessment of ground...

Methods for measurement, analysis and assessment of ground...

Methods for use in detecting seismic waves in a borehole

Methods of and apparatus for generating seismic waves

Mixed device for generating longitudinal or shear waves

Mobil device for generating acoustic shear waves in the earth

Mobile device for generating acoustic shear waves

Mobile high frequency vibrator system