Acoustic impedance log obtained from seismograms
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.
- Assignee:
- Mobil Oil Corporation
- Patent Number(s):
- US 4488270
- OSTI ID:
- 5862574
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
580203* -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
GEOPHYSICAL SURVEYS
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
OPTIMIZATION
PHYSICAL PROPERTIES
REFLECTIVITY
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC SURVEYS
SEISMIC WAVES
SEISMOGRAPHS
SONIC LOGGING
SURFACE PROPERTIES
SURVEYS
VELOCITY
WELL LOGGING