To ensure a fixed sum of 100% ratio between styrene, myrcene and DBI, we used Sobol sampling to provide a discrete set of samples that are then normalized to sum to 1. This constrained sample set is evaluated on the qNEHVI acquisition and ranked for highest acquisition value to be evaluated next, similar to the pre-repair optimization reported by Low and Mekki-Berrada. The workflow and optimization process are shown in Figure below: