Abstract:

Umbilical is an important link between the upper control system and the subsea production facility. This paper systematically summarizes the conventional pre-commissioning technology of umbilical and key testing equipment & instruments, which is helpful to promote the research & development of relevant supporting equipment and improve the domestic technical service capacity of deepwater umbilical pre-commissioning. Based on the practice of a gas field in the South China Sea, a simple, integrated and flexible umbilical testing process is proposed, which provides technical support for the subsequent deepwater umbilical pre-commissioning. Two different types of subsea precommissioning equipment for deepwater umbilical are compared and analyzed: the deck testing equipment represented by intervention, workover and control system and the subsea testing equipment represented by the subsea booster module. The limitation of the deepwater umbilical pre-commissioning technology based on the test system of subsea booster module is analyzed, and the future development direction of its is proposed. Finally, its broad application prospect is pointed out.

Key words: Subsea production control system; Pre-commissioning, Umbilical, Hydrotesting, Engineering application