Challenge and Solution of PanYu35-2 Subsea Manifold Design Fabrication and Testing

As one of the main equipments of South China Sea Deep Water Gas Development project, PanYu35-2(PY35-2) subsea manifold provides a support for the connection of 6" and 10" pipeline in the pipeline route, and also provides a support for the field pigging and pressure test. The manifold is connected with two production wells, and considering the commercial benefit of client, one spare hub and four spare valves are provided in the manifold system for the future wells. During the design fabrication and testing, there are lots of challenges. In the paper the design fabrication and testing of PY35-2 subsea manifold were presented, and the challenge and solution during the manifold development were presented as well. These can provide a good reference to the subsequent project in South China Sea.