Firing device, explosive charge, method, and system, for seismic

Details Firing device, explosive charge, method, and system, for seismic Firing device, explosive charge, method, and system, for seismic

1970-02-26

1976-02-10

Wilbur, Maynard R.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

340 7R, 181110, 181114, G01V 138, F42D 306

Patent

active

039372960

ABSTRACT:
A firing device is provided for initiation of delay type seismic charge assemblies, which comprises means for conveying and guiding the charge assemblies, in the seismic test zone, into electrical initiation contact with one of any number of available pairs of electrical conductor surfaces, insulated from the other and adapted to connect with opposite poles of an external firing current source; and means for directing the thus initiated assemblies from the initiation zone, during the delay period, for subsequent detonation.
Also provided are elongated end-recessed seismic charge assemblies initiated in the above device; and seismic exploration system, and method, utilizing said device.

REFERENCES:
patent: 3187831 (1965-06-01), Smith, Jr.
patent: 3360070 (1967-12-01), Cholet et al.
patent: 3368641 (1968-02-01), Cholet et al.
patent: 3382946 (1968-05-01), Smith, Jr. et al.
patent: 3491687 (1970-01-01), Cholet
patent: 3496532 (1970-02-01), Thigpen
patent: 3509961 (1970-05-01), Fitch

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