DISTINCTIVE LAND SEISMIC SWEEP
World Intellectual Property Organization Patent
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Abstract
The invention is an electric sweep type seismic vibrator source of the type used in seismic prospecting for hydrocarbons. The source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground in a recurring fashion along with driving the source from location to location through a survey area. Preferably a foot is arranged on the bottom end of the rod or piston for contact with the ground and by engaging the grid of motors to push down against the ground in a rapid progression, acoustic energy is created and delivered into the ground for geophones to sense and record. However, the rapid progression of pulses or sweep of seismic energy is delivered in a distinctive fashion as compared to a conventional upsweep or downsweep and the distinctiveness is also achieved by creating a designed cadence or timing such that each pulse in a series of pulses is not delivered in a regular timing. Several similar seismic sources may be employed where each is provided with its own distinctive series of pulses such that each may be identified within the data record and source separation from a number of seismic sources may be accomplished.
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Cited Art Landscape
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