Method and apparatus for acoustic well logging

Details Method and apparatus for acoustic well logging Method and apparatus for acoustic well logging

1979-04-13

1982-03-16

Birmiel, Howard A.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367 30, G01V 140

Patent

active

043204708

ABSTRACT:
An improved well logging technique is provided for more accurately deriving acoustic measurements of subsurface earth formations. Method and apparatus are described for converting an acoustic signature which can be generated on a depth dependent or time dependent basis, into digital format and subsequently employing special processing techniques to yield parameters such as velocity of the transmitted acoustic energy through earth formations and the amplitude of the received acoustic energy. Processing further allows for the generation of noise immunity signals functionally related to a measured signature parameter and for the generation of amplitude control signals. Additionally, a control signal is generated to optimize transmitter firing rate.

REFERENCES:
patent: 3289157 (1966-11-01), Brokaw
patent: 3322229 (1967-05-01), Smith
patent: 3467875 (1969-09-01), Engle
patent: 3506813 (1970-04-01), Trimble
patent: 3654562 (1972-04-01), Reilly, Jr. et al.
patent: 4040001 (1977-08-01), Vivet et al.
patent: 4131875 (1978-12-01), Ingram et al.
patent: 4140994 (1979-02-01), Buckner

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