Method for measuring acoustic impedance and dissipation of mediu

Details Method for measuring acoustic impedance and dissipation of mediu Method for measuring acoustic impedance and dissipation of mediu

1988-02-01

1989-09-26

Tarcza, Thomas H.

Acoustics

Geophysical or subsurface exploration

Well logging

181119, 367 31, 367911, G01V 140

Patent

active

048693383

ABSTRACT:
The invention is the use of standing waves to generate a well log. By measuring changes in energy dissipation from the standing wave along the well-bore, the formation may be evaluated for permeability variations may be determined. Variations in the tube wave velocity may be determined from variations in the frequency of a standing tube wave having a selected wave length. Shear wave velocity of the surrounding formation may be determined from the tube wave velocity.

REFERENCES:
patent: 4715019 (1987-12-01), Medlin et al.

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