Abstract: The virtual simulation of underwater maintenance for oil and gas production involves a variety of maintenance processes and training cases. However, the existing modeling techniques mainly focused on the description of low-level model, such as geometric and physical properties, but lacked of abstraction and description of high-level application for the dynamic maintenance process. So a High-level Descriptive Simulation Model for Underwater Virtual Maintenance (HDMUM) was proposed. Three parts of simulation model, i.e., simulation entity, operation scene and maintenance process, were abstracted and described from the high-level application. All of the HDMUM components and their relationship were designed to build and realize the dynamic maintenance process, which is the core of whole model. The application examples showed that the HDMUM can support users to build different simulation cases flexibly and efficiently.

Key words: virtual maintenance, dynamic maintenance process, HDMUM, XML script