LAUSR

Uncertainty in estimates of elastic properties of soft mudrock components such as clay minerals and kerogen can influence well-log-based evaluation of effective elastic properties in organic-rich mudrocks. Existing methods, such as effective medium models for well-log-based assessment of elastic properties, assume constant stiffness and idealized shape for rock components. However, these characteristics might vary depending on the distribution and size of that particular component, as well as its adjacent components. Furthermore, there is a significant uncertainty in elastic properties of kerogen in the case of organic-rich mudrocks. The uncertainty associated with the aforementioned parameters on effective elastic properties of rocks has not been investigated in previous publications. In this paper, we quantify the variability in elastic properties of individual mudrock components caused by their spatial distribution, size, and rock fabric, at the micro-scale domain, and their impact in well-log-based ev...