Open-ended seismic source

Details Open-ended seismic source Open-ended seismic source

1978-07-21

1980-03-18

Moskowitz, Nelson

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

367147, G01V 138, G01V 110

Patent

active

041934725

ABSTRACT:
An open-ended seismic source for use in a liquid medium such as water is disclosed. The source includes a source of explosive gas, a firing chamber connected to the source, a capacitor discharge ignition system connected to the firing chamber for igniting the gas in the firing chamber, a barrel connected to the firing chamber, defining an explosion chamber and having an outlet at its lower end, a plurality of baffle plates fixed in the barrel near the outlet for permitting the exploded gas to enter the medium and for retarding the entry of the medium into the barrel, and a reaction plate attached to the barrel and disposed below the outlet so that the exploded gas entering the medium impinges on the plate and the recoil of the barrel is reduced.

REFERENCES:
patent: 2994397 (1961-08-01), Huckaboy
patent: 3048816 (1962-08-01), Lubrow
patent: 3256952 (1966-06-01), Cuder et al.
patent: 3397755 (1968-08-01), Loper
patent: 3588801 (1971-06-01), Leonard
patent: 3951231 (1976-04-01), Leonard
Cook, "Report On a Visit to the . . . Grand Banks", 6/13/65, 9 pages, Imperial Oil Limited Report.
Bayhi, "Offshore Demonstration of GSI Gas Exploder", 3/1/66, 5 pages, Exxon Prod. Res. memorandum.

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