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Method for processing seismic data to identify anomalous absorption zones

Patent ·
OSTI ID:1175609
A method is disclosed for identifying zones anomalously absorptive of seismic energy. The method includes jointly time-frequency decomposing seismic traces, low frequency bandpass filtering the decomposed traces to determine a general trend of mean frequency and bandwidth of the seismic traces, and high frequency bandpass filtering the decomposed traces to determine local variations in the mean frequency and bandwidth of the seismic traces. Anomalous zones are determined where there is difference between the general trend and the local variations.
Research Organization:
RDSP I, L.P., Houston, TX (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-01BC15356
Assignee:
RDSP I, L.P. (Houston, TX)
Patent Number(s):
6,982,927
Application Number:
10/670,110
OSTI ID:
1175609
Country of Publication:
United States
Language:
English

References (3)

A constrained global inversion method using an overparameterized scheme: Application to poststack seismic data journal March 2001
Decomposition of seismic signals via time‐frequency representations conference March 2012
Detection of gas in sandstone reservoirs using AVO analysis: A 3-D seismic case history using the Geostack technique journal September 1994

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