基于水下管汇的应用特点，依托我国南海某示范工程项目，对500 m水深级深水水下管汇的设计关键技术进行了研究和分析，并介绍了深水水下管汇的设计方法和内容。研究成果对深水水下管汇及水下生产设施的设计共性技术研究有借鉴意义。

Based on the application characteristics of subsea manifold, relying on a demonstration project in the South China Sea, the key technologies of 500-m deepwater subsea manifold design are studied and analyzed. The design method and content of deepwater subsea manifold are also introduced. The research results are of significance for the study of common technology in the design of deepwater subsea manifold and subsea production facilities.