Pgs Geophysical As

Geospectrum Technologies Inc.

Dainis Nams

Bruce Allan Armstrong

Paul Yeatman

Janis Breton Nams

Janis Nams

Robert Jefferson

Bruce A Armstrong

An underwater acoustic source can include a first piston coupled to a second piston and a plurality of linear magnetic actuators directly connected to each of the first piston and the second piston. Each of the plurality of linear magnetic actuators include a linear shaft positioned within the cylindrical magnetic assembly and mounted to the first end of the rigid ferromagnetic housing and the second end of the rigid ferromagnetic housing, such that the linear shaft is stationary, and linear bearings positioned between the cylindrical magnet assembly and the linear shaft to allow the cylindrical magnet assembly to translate along the linear shaft relative to the cylindrical electrical coil, and wherein each of the plurality of linear magnetic actuators is activated, the first piston and the second piston oscillate towards and away from each other, causing acoustic waves to be generated in water.

Underwater acoustic source and actuator

Disclosed are seismic sources that may utilize an external driver to energize the air in the seismic source for generation of acoustic energy. An apparatus for generating acoustic energy may comprise a seismic source comprising an internal cavity configured to contain a fluid. The apparatus may further comprise a piston external to the seismic source and in fluid communication with the internal cavity, wherein the piston operable to energize the fluid in the internal cavity of the seismic source. The apparatus may further comprise a linear motor coupled to the piston.

Use of external driver to energize a seismic source

Disclosed are seismic sources that may utilize an external driver to energize the air in the seismic source for generation of acoustic energy. An apparatus may comprise a seismic source comprising an internal cavity configured to contain a volume of a fluid. The apparatus may further comprise an external driver, wherein the external driver and the seismic source are coupled to permit fluid communication between the external driver and the internal cavity of the seismic source, wherein the external driver is configured to create a pressure wave that drives the seismic source and a gas resonance. The apparatus may further comprise a fluid reservoir, wherein the fluid reservoir and the external driver are coupled to permit fluid communication between the fluid reservoir and the external driver.

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Halifax, Canada

Dainis Nams