Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1978-02-06
1980-08-12
Buczinski, S. C.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
367 30, 367 32, G01V 140, G01V 130
Patent
active
042176590
ABSTRACT:
An acoustic source and a spaced-apart acoustic receiver are moved through the casing of a well. Electrical signals indicative of the source signal and the receiver signal are applied uphole by way of a conductor to a time series analyzer and recorder. The time series analyzer provides power-spectral density functions and cross-spectral density functions of the source and receiver signals during reconnaissance logging operations. From these functions there is determined the ability of the casing-cement formation combination to transmit the source signal to the receiver and also the linear correlation of the source signal and receiver signal.
REFERENCES:
patent: 2210417 (1940-08-01), Kinley
patent: 2396935 (1946-03-01), Walstrom
patent: 3265151 (1966-08-01), Anderson
patent: 3588800 (1971-06-01), Moore et al.
patent: 3732947 (1973-05-01), Moran et al.
patent: 3781784 (1973-12-01), DeBerandes
patent: 3909775 (1975-09-01), Lavigne
patent: 3962674 (1976-06-01), Howell
R. M. McKinley et al., Journal of Petroleum Technology, 3-1973, pp. 329-338.
Buczinski S. C.
Huggett C. A.
Mobil Oil Corporation
Scherback William J.
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