Bandwidth enhancing seismic acquisition system and method
CA 1313565 C · Owner: Ion Geophysical Corporation · Inventors: Carroll, Paul E.; Bowen, Charles K.; Smith, Gillan C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved geophysical data acquisition system is disclosed for enhancing effective system bandwidth of a seismic signal having an amplitude frequency spectrum characterized by high amplitude low frequencies and low amplitude high frequencies. A low-cut filter (35) is provided which has a frequency response with its low frequency end attenuation limited. The low-cut filter (35) has the effect of increasing effective channel bandwidth while simultaneously allowing low frequency signals from deep within the earth to be included in the output signal. Effective channel bandwidth is increased because low frequency seismic signals are attenuated automatically allowing channel gain to be …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2010.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.