Tubular piezo-electric sensor with high sensitivity

Details Tubular piezo-electric sensor with high sensitivity Tubular piezo-electric sensor with high sensitivity

1988-12-22

1990-04-17

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367166, 367169, 367171, 367172, 310337, 310800, G01V 138

Patent

active

049186663

ABSTRACT:
A tubular piezo-electric sensor has at least one sensitive element disposed against an outer surface of a tubular support. A substance whose acoustic impedance is very different from that of the material forming the tubular support is disposed therein and a remaining volume of the tubular support is filled with liquid. Glass fiber cords or open cell foams, for example, are used as the substance, and the liquid may, for example, be that which fills a seismic streamer and, in this case, the tubular support is left open. The tubular support may also be closed at both ends by sealed caps and included in a protective sheath. The dimensions of the tubular support and the material from which it is made are chosen so as to optimize the sensitivity of the piezo-electric sensor.

REFERENCES:
patent: 3375489 (1968-03-01), Kompanek
patent: 3798474 (1974-03-01), Cassand et al.
patent: 4186323 (1980-01-01), Cragg et al.
patent: 4706229 (1987-11-01), Congdon
patent: 4716556 (1987-12-01), Raskin et al.
patent: 4768173 (1988-08-01), Gautier et al.

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