Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2008-07-08
2008-07-08
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C703S005000
Reexamination Certificate
active
07398158
ABSTRACT:
A unique method has been developed which can show the presence of fractures in an Earth formation as a mappable attribute. This method uses the frequency spectra derived from P-wave seismic data over a pair of specific time windows above and below a seismic horizon or reflector of interest to infer the presence or absence of these geologic fractures based on an attenuation of high frequencies. The method produces a parameter value (t*) which is proportional to the shift in frequency spectra amplitudes (i.e., energy) from higher frequencies to lower frequencies, that is, from a time-window above a horizon or reflector of interest to a time-window below the horizon or reflector of interest.
REFERENCES:
patent: 4554629 (1985-11-01), Smith, Jr.
patent: 4570122 (1986-02-01), Leu
patent: 5870691 (1999-02-01), Partyka et al.
patent: 5940778 (1999-08-01), Marfurt et al.
patent: 5995448 (1999-11-01), Krehbiel
patent: 6055482 (2000-04-01), Sudhakar et al.
patent: 6131071 (2000-10-01), Partyka et al.
patent: 6594585 (2003-07-01), Gersztenkorn
patent: 6697737 (2004-02-01), Jones et al.
patent: 2002/0128778 (2002-09-01), Pepper et al.
patent: 0196905 (2001-12-01), None
Dasgupta, Rahul and Roger A. Clark, “Estimation ofQfrom surface seismic reflection data,”Geophysics,vol. 63, No. 6, Nov.-Dec. 1998 (pp. 2120-2128).
Varela, Carlos Lopo, Andre L.R. Rosa and Tadeusz J. Ulrych, “Modeling of attenuation and dispersion,”Geophysics,vol. 58, No. 8, Aug. 1993 (pp. 1167-1173).
“Frequency Attenuation a Fracture Indicator”, Houston Geological Society Bulletin, Mar. 2001 by Ilyas Najmuddin.
“Detecting Fracture Zones in the Austin Chalf Using Seismic P-Wave Data”, Houston Geological Society Bulletin, Sep. 2001, by Ilyas Najmuddin.
Barlow John
Bouchard John H.
Maseles Danita M. J.
Schlumberger Technology Corporation
Taylor Victor J
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