Measuring and testing – Vibration – By mechanical waves
Patent
1985-03-25
1986-12-30
Birmiel, Howard A.
Measuring and testing
Vibration
By mechanical waves
73571, 73597, 73599, 367 13, G01N 2900
Patent
active
046319638
ABSTRACT:
Acoustic energy anisotropy is measured in a core sample from a subterranean formation. The core sample is shaped by having its outer surface cut to provide a plurality of pairs of parallel, planar outer surfaces about the length of the core sample. A pair of planar transducers are successively placed in contact with each of the pairs of parallel, planar outer surfaces, one of the transducers being a transmitting transducer and the other being a receiving transducer. Compressional or shear acoustic energy is transmitted through the core sample in the aximuthal directions that are perpendicular to each of the pairs of parallel, planar outer surfaces of the core sample. Any differences in travel time, attenuation, waveform or other acoustic properties for the acoustic energy transmissions in the plurality of differing azimuthal directions are a measure of the compressional or shear acoustic energy anisotropy of the subsurface formation.
REFERENCES:
patent: 3537541 (1970-11-01), Desai et al.
patent: 4380930 (1983-04-01), Podhrasky et al.
Smallwood Larry D.
Sprunt Eve S.
Birmiel Howard A.
Gilman Michael G.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
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