Transverse wave logger

Details Transverse wave logger Transverse wave logger

1987-10-05

1989-05-30

Tarcza, Thomas H.

Acoustics

Geophysical or subsurface exploration

Well logging

181106, 367 32, G01V 140

Patent

active

048342092

ABSTRACT:
A transverse-wave logging tool consists of a plurality of sets of transducers mounted around a cylindrical mandrel. The transducer active faces are characterized by two orthogonal dimensions, one of which dimensions is a half-wavelength long relative to the acoustic excitation energy applied to a transmitter transducer and the transverse-wave formation velocity. Receiver transducers detect converted-compressional waves resulting from transverse waves that were generated by the acoustic excitation energy.

REFERENCES:
patent: 3276533 (1966-10-01), Pickett et al.
patent: 3330375 (1967-07-01), White
patent: 3333238 (1967-07-01), Caldwell
patent: 3340953 (1967-09-01), Zemanek, Jr.
patent: 3376950 (1968-04-01), Grine
patent: 4131875 (1978-12-01), Ingram
patent: 4493062 (1985-11-01), Mallett
patent: 4516228 (1985-05-01), Zemanek, Jr.
patent: 4580252 (1986-04-01), Mallett
patent: 4649526 (1987-03-01), Winbow et al.
patent: 4709357 (1987-11-01), Maki, Jr.
"Cement Bond Log-A Study of Cement & Casing Variables", Pardue et al., Journal of Petroleum Tech., 5/63.

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