Processing of seismic data using the S-transform

Details Processing of seismic data using the S-transform Processing of seismic data using the S-transform

2007-05-14

2009-11-10

Dunn, Drew A (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C702S014000, C367S007000, C367S009000, C367S014000

Reexamination Certificate

active

07617053

ABSTRACT:
The present invention relates to a method and system for processing seismic data. Seismic data indicative of at least a time-dependent seismic trace are transformed into time-frequency domain using the S-transform. The transformed seismic data are processed for determining at predetermined time instances an instantaneous amplitude and a dominant instantaneous frequency. Based on a quotient of the instantaneous amplitude to the dominant instantaneous frequency seismic data indicative of a likelihood of a presence of hydrocarbons are then determined which are then graphically displayed. The method and system for processing seismic data provides a powerful tool for determining the likelihood of a presence of hydrocarbons based on a double peak hydrocarbon signature in the quotient of the instantaneous amplitude to the dominant instantaneous frequency.

REFERENCES:
patent: 5940778 (1999-08-01), Marfurt et al.
patent: 6253157 (2001-06-01), Krebs
patent: 6278949 (2001-08-01), Alam

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