Acoustic impedance log obtained from seismograms

Details Acoustic impedance log obtained from seismograms Acoustic impedance log obtained from seismograms

1981-09-15

1984-12-11

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 46, 367 38, 364421, G01V 128

Patent

active

044882700

ABSTRACT:
In seismic exploration, an improved synthetic acoustic log is produced from seismograms by combining band limited reflectivity and velocity functions, both of which are obtained from the seismograms. The reflectivity function is obtained by deconvolving the field seismograms, transforming the reflectivity function so obtained into the frequency domain, and filtering the frequency domain representation to suppress frequencies below the seismic band. The velocity functions is obtained by applying a velocity spectra technique to the field seismograms to produce an acoustic log, transforming the acoustic log into the frequency domain, filtering to suppress all frequencies in the seismic pass band and converting back into the time domain.

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Taner, M. and Koehler, F., "Velocity Spectra-Digital Computer Derivation and Applications of Velocity Functions," Geophysics, 12/69, pp. 859-881.
Sengbush et al., "Intrepretation of Synthetic Seismograms," Geophysics, 4/61, pp. 138-157.

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