Variations in ranked list of reservoir analogs as an effect of search preferences

Abstract

We compared variations of the two most relevant and widespread approaches for reservoir analogs: search by manual filtering and search by similarity measures with properties weights. The filtering approach tends to be a conventional way of search which can be easily performed manually by geologists, but its results seems to underestimate and limit the width of possibilities. The similarity approach has a more sophisticate implementation and, therefore, offers a range of additional useful analytics. Sensitivity analysis was performed using SHAP values which opens the way to evaluate the effect of different properties to the resulting list of analogs and revealing causal links between these properties themselves.