Multi-directional assemblies for sonic logging

Details Multi-directional assemblies for sonic logging Multi-directional assemblies for sonic logging

1977-11-14

1980-01-22

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Well logging

181108, 73622, 340 155BH, 367 86, 367180, G01V 140

Patent

active

041845625

ABSTRACT:
Electroacoustical transmitting or receiving transducer comprising a flat disc piezoelectric transducer element aligned with a conical reflector. The disc transducer element is positioned to transmit acoustic energy in a direction parallel with a borehole axis and this energy is reflected by the conical reflector so that it impinges upon a borehole wall near the critical angle to provide maximum propagation of energy in the rock in one direction parallel to the borehole. The same transducer arrangement also functions as an efficient directional receiver of acoustic energy.

REFERENCES:
patent: 3028752 (1962-04-01), Bacon
patent: 3136381 (1964-06-01), Anderson
patent: 3481425 (1969-12-01), Smith, Jr. et al.
patent: 3504759 (1970-04-01), Cubberly, Jr.
patent: 3542150 (1970-11-01), Youmans et al.
patent: 3786757 (1974-01-01), Goldstein et al.
patent: 3974476 (1976-08-01), Cowles
patent: 3978939 (1976-09-01), Trouiller
patent: 4022055 (1977-05-01), Flournoy et al.

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