Acoustics – Geophysical or subsurface exploration – Programmed or timer-controlled
Patent
1985-08-16
1990-10-02
Steinberger, Brian S.
Acoustics
Geophysical or subsurface exploration
Programmed or timer-controlled
367144, H04R 102
Patent
active
049601830
ABSTRACT:
A firing system for marine seismic sources 14 grouped and fired in subarrays 18. Each source 14 is provided with a firing circuit 30 including an energy storage device, such as a storage capacitor 32, adapted to pass firing current through the source actuator 24 in response to receiving a low power trigger signal from a source control system 28 located on the ship 16 from which the seismic survey is conducted. The firing circuit 30 corresponding to each source 14 is situated proximate the source 14. An umbilical 20 extends between the control system 28 and each subarray 18. The umbilical 20 includes a trigger signal conductor corresponding to each source, a charging conductor to which the storage capacitors of each firing circuit 30 are connected in parallel and a ground conductor.
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U.S. Patent Application Ser. No. 708,310, filed Mar. 5, 1985.
Exxon Production Research Company
Phillips Richard F.
Steinberger Brian S.
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