Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1981-02-05
1983-11-01
Ciarlante, Anthony V.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
G01N 2900
Patent
active
044124520
ABSTRACT:
A simple harmonic oscillator for use in measuring dynamic elastic constants of rock material samples includes a pair of masses vertically suspended from a support position by a pair of wires. At least one mass is driven by a permanent magnet with the driving coil positioned in the air gap to the magnet. The rock sample is horizontally positioned between the pair of masses such that the rock sample acts as a spring element connecting the masses, thereby forming the simple harmonic oscillator.
REFERENCES:
patent: 1414077 (1922-04-01), Fessenden
patent: 3320796 (1963-10-01), Darby
patent: 3489161 (1970-01-01), Rexford
patent: 4058007 (1977-11-01), Exner
"Effects of Pressure and Fluid Saturation on the Attenuation of Elastic Waves in Sands", by G. H. F. Gardner, et al.; Journal of Petroleum Technology; Feb. 1964; pp. 189-198, Petroleum Transactions.
"The Attenuation Constant of Earth Materials", by W. T. Born, pp. 132-147.
"A New Approach to the Study of Elastic Propagation in Rocks" by F. F. Evision.
"Internal Friction in Shear and Shear Modulus of Solenhofen Limestone Over a Frequency Range of 10.sup.7 Cycles per Second", by Louis Peselnick and W. F. Outerbridge; Journal of Geophysical Research vol. 66, No. 2, Feb. 1961.
"Propagation of Elastic Waves in a Cylindrical Bore Containing a Fluid", by M. A. Biot; Journal of Applied Physics; vol. 23, No. 9, Sep. 1952.
"Permeability Profiles From Acoustic Logging", by J. J. Staal; Society of Petroleum Engineers of AIME.
"The Variation of the Elastic Constants of Rocks with Frequency", by Dr. J. McG. Bruckshaw and P. C. Mahanta; Petroleum, Jan. 1954.
"A Review of the Progress in the Measurement of Dynamic Elastic Properties", by K. W. Hillier.
"Elastic Behaviour of Rocks at Low Frequencies", by M. J. Usher Geophysical Prospecting X.
Biot Maurice A.
Masse Lucien
Medlin William L.
Ciarlante Anthony V.
Gilman Michael G.
Hager George W.
Huggett Charles A.
Mobil Oil Corporation
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