How Emulation Improves Offshore Operations

Subsea 7 is supporting its offshore fleet by incorporating emulation. Virtualising the actual control system software used offshore and integrating a high resolution functional 3D “digital twin” model of its vessels and equipment. Subsea 7 can effectively test control systems under as near to live conditions as possible by also incorporating historical dynamic positioning archives of vessel sea states and other external influences such as temperatures, loads and faults into the system. Using the Subsea 7 emulation techniques means operatives can be trained on exact virtualised control system software in advance of actual construction and as a result, software faults can be highlighted, de-bugged and rectified using the emulator system. The digital twin models can also be used to facilitate efficient planning of deck operations. This paper demonstrates how technology helps improve Subsea 7’s offshore operations. Methods, Procedures, Process: A vessel emulation room is in use for control system testing and familiarisation of construction equipment, including for instance, lay, crane or diving systems and is currently developing its library of vessel functional 3D models with full integration to the control system software. By use of physics engine feedback into the functional 3D model and control systems, projects operations can be verified. Results, Observations, and Conclusions: It is proven using emulation from an office base, for vessels operating anywhere in the world, that Subsea 7 are able to save significant costs and time. The emulations can be re-used and expanded for the full life cycle of the equipment. Over 90% of software bugs can be ironed out prior to installation, a significant advantage for Operations. Novel/Additive Information: This paper describes a significant step towards the digitalisation of the Subsea 7 fleet and equipment incorporating the actual control system software used to operate the equipment.