4. Impedance, Reflection Coefficients, and the Convolutional Model

4. Impedance, Reflection Coefficients, and the Convolutional Model

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4. Impedance, Reflection Coefficients, and the Convolutional Model Kurt J. Marfurt CPSGG The University of Oklahoma Petroleum Geology and Geophysics 4-1
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Learner Objectives After this section, you will be able to: Compute impedance from P-wave velocity and density Compute normal-incidence reflection coefficients from the P-wave impedances Graphically convolve a simple wavelet with a reflection series to generate a synthetic seismogram 4-2
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(Veeken, 2007) P-wave velocities Gas “shales” 4-3
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(Veeken, 2007) P-wave velocity vs. density 4-4
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(Veeken, 2007) P-wave velocity vs. density for lithologies Gas “shales” 4-5
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(Veeken, 2007) Fracable Gas “shales” P-wave velocity vs. Poisson’s ratio for lithologies 4-6
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P- and S-impedances computed from surface seismic data (Refunjol et al., 2010) 4-7
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Microseismic events from hydraulic fracturing correlate to lower impedance streaks in the shale (Refunjol et al., 2010) 4-8
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ZS2 Correlation of microseismic events from hydraulic fracturing to lower S-impedance zones (Refunjol et al., 2010) 4-9
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This note was uploaded on 02/04/2012 for the course GPHY 3423 taught by Professor Marfurt during the Fall '11 term at The University of Oklahoma.

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4. Impedance, Reflection Coefficients, and the Convolutional Model

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