We estimate different statistical measures for quantifying heterogeneity and textures from scanning acoustic microscope images of shale microstructures. The analyzed shales covered a range of depths, kerogen content, and maturity. We observed quantifiable and consistent patterns linking texture, shale maturity, and elastic P-wave impedance. The textural heterogeneity and P-wave impedance and velocity, and density increase with increasing maturity (decreasing kerogen content), while there is a general decrease in textural anisotropy with maturity. We also found a reasonably good match between elastic impedance estimated from SAM images and impedance computed from ultrasonic measurements. The textural anisotropy ranges from 10% to about 70% and tends to decrease with increasing depth and maturity.
CITATION STYLE
Mukerji, T., & Prasad, M. (2007). Image Processing of Acoustic Microscopy Data to Estimate Textural Scales and Anistropy in Shales (pp. 21–29). https://doi.org/10.1007/1-4020-5721-0_3
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