Abstract: Glass fiber composites have been widely used in the protection of underwater oil and gas production facilities by overseas oil field companies in the past two decades due to their lightweight, high strength and corrosion-resistant material characteristics, and have achieved mature engineering applications. In this paper, for the domestic fiberglass jumper cover, combined with the function of the cover underwater, the finite element ANSYS software is applied to establish the three-dimensional model of the domestic fiberglass jumper cover, analyze the strength of the cover from the three aspects of the sand slope buildup, the trawl of fishing nets and the impact of the falling objects, and carry out the safety assessment according to the DNV specification. Comparison between simulation and experiment shows that the strength of the protective cover meets the specification requirements and matches the experimental conclusions, which can provide a reference for the future design of domestic fiberglass underwater protective structure.

Key words: subsea production systems, GFRP, simulation analysis, jumper cover, strength