The field of Semantic Business Process Management (SBPM) has refuelled interest in using ontologies for the representation of the static and dynamic aspects of an enterprise and value chains. Putting the SBPM vision into practice, however, requires a consistent and operational network of ontologies reflecting the various spheres of enterprise structures and operations. Consistent means that the ontologies are based on compatible paradigms, have a compatible degree of detail, and include at least partial sets of alignment relations which allow data interoperability. Operational means that the ontology specifications are available in a single, current ontology formalism for which scalable repositories, reasoning support, APIs, and tools are available. In this paper, we describe a set of ontologies for SBPM that follows the mentioned requirements, and compare our work with the related efforts.