What is it about?
We show how to interpret a cross plot of the ratio of compression velocity and shear velocity against acoustic impedance using curves that are derived from basic rock physics relationships. By doing this, we can identify various geological facies on the cross-plot. We show examples derived from both well log measurements and inverted seismic data.
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Photo by Brandon Stoll on Unsplash
Why is it important?
This work brings together rock physics relationships that date back to the mid twentieth century with several more recent seismic inversion and interpretation techniques. Although the theory is mathematical, the curves that are superimposed on the rock physics cross plots are intuitively understandable.
Perspectives
This work is the culmination of work that me and my two co-authors have been pursuing for almost 30 years.
Brian Russell
University of Calgary
Read the Original
This page is a summary of: Poroelasticity and rock-physics templates, Interpretation, December 2024, Society of Exploration Geophysicists,
DOI: 10.1190/int-2024-0082.1.
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