G - Physics – 01 – V
Patent
G - Physics
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V
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G01V 1/133 (2006.01) G01V 1/137 (2006.01) G01V 1/40 (2006.01)
Patent
CA 1052902
S P E C I F I C A T I O N PRESSURIZED GAS DISCHARGING APPARATUS FOR USE AS A DOWN-BORE SEISMIC IMPULSE SOURCE Inventor: STEPHEN V. CHELMINSKI ABSTRACT OF THE DISCLOSURE Improved pressurized gas discharging apparatus for use as a down-bore seismic impulse source provides a compact, efficient axially stacked assembly of components within a one piece elongated tubular shell housing-having removable end closures. Within the tubular housing, removable partition means define a charge chamber and an operating chamber having an operating shuttle release means therebetween for sudden release of high pressure gas present in the charge chamber through a discharge port into the surrounding environment. Gas flow passageways for the supply of high pressure gas to the chambers extend longitudinally within the wall of the tubular housing and communicate with passages in the parti- tion means. The shuttle release means may be actuated by a solenoid valve also removably positioned within the tubular housing for controlling gas flow through passageways also located within the wall of the tubular housing and within the partition means. The components are all advantageously re- movably positioned within the tubular shell without rigid attachment to one another thus permitting convenient disassem- bly for replacement to change the device's operating parame- ters or for repair. The housing is elongated and narrow enabling with no external protrusions to interfere with in- sertion for convenient use within a narrow borehole as a down- bore seismic impulse source. The housing forward end closure may be cone shaped to facilitate such insertion while the rear end closure includes means for connection to a source of pressurized gas and an electrical cable to power the solenoid valve.
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