Abstract : Our work is related to system engineering. We are interested in the creation, the management, and the dissolution of the cooperation structures (such as: enterprise network, virtual enterprise, and extended enterprise). The use of the well-known methodologies (CIMOSA, GRAI-GIM, PERA, and VERAM) in the engineering of these structures is still difficult because of their generality degrees. So, it becomes necessary to develop an engineering methodology for them. In order to respond to this problematic, our work proposes an engineering framework for organization network which is a particular cooperation structure. This framework results from the specialization of the two reference frameworks GERAM and VERAM. Essentially, we propose a reference architecture, modelling concepts, an engineering methodology, and models. Subsequently, we present an application of the methodology through a case study.