In some embodiments, an apparatus and a system, as well as a method and an article, may operate to access a workflow database, the workflow database including operations data describing workflow operations for performing an oil recovery process and the workflow database having result data indicating a result of the oil recovery process; to generate a list that includes a plurality of parameters related to the workflow operations; to determine predicted impacts, on the result, of changing values for the plurality of parameters; to select a parameter of the plurality of parameters that has a largest predicted impact on the result relative to the predicted impacts of non-selected ones of the plurality of parameters, to provide a selected parameter; and to provide a recommendation for refinement of measurement data related to the selected parameter. Additional apparatus, systems, and methods are disclosed.