Reservoir properties from products of seismic inversion

What is it about?

I show, for the first time, equations that predict P-wave and S-wave impedances are linearly related with their respective velocities, and P-wave impedance is linearly related with the Vp/Vs ratio. The slope and intercept terms consist of geology dependent coefficients, and the equations are shown to discriminate competent carbonates from sandstones.

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Why is it important?

The equations define inverted elastic properties in a new way that gives them geologic character and relevance. They also constrain some theoretical methods and approaches popularly used by practitioners of rock physics in quantitative seismic characterization.