Method, system and apparatus for selectively shutting off leakage of compressed air in marine seismic airgun arrays having common supply hoses for multiple airguns
US5432757A
Large-diameter, cylinder-shuttle seismic airgun method, apparatus and towing system
CA1296090C
Method, system and apparatus for producing powerful seismic energy impulses by implosion useable in wells in the earth
US4858718A
Tube-wave attenuation method, system and apparatus for use with an inpulsive seismic energy source in liquid-containing wells
US4723230A
High ambient liquid pressure-resistant electrical connector
US4798261A
Small powerful hydro gun
US4757482A
Modular airgun array method, apparatus and system
US4739859A
Method and apparatus for reducing the stretch of an elastomeric diaphragm of a land seismic source
US4779245A
Long-life, low-maintenance air gun/hydro gun
CA1240781A
Method and apparatus for converting an air gun into a hydro gun for marine seismic impulse generation
US4754443A
Airgun having shaft-bearing-guided shuttle and capable of fast repitition self-firing
US4712641A
Method and system for generating shear waves and compression waves in the earth for seismic surveying
EP0118924A2
Modular airgun array method and system
CA1208754A
Method and system for well velocity shooting and vertical seismic profiling
US4599712A
Modular airgun array method, apparatus and system
CA1192175A
Solenoid valve system with removable waterproof solenoid winding