充分挖掘东海海域整装油气田周边存在的大量边际气田中蕴藏的天然气资源,关键是寻找一种适合边际气田开发的经济有效方式。水下生产系统应用使得边际气田经济高效开发成为可能。水下生产系统是一种海洋油气田开发新技术,与传统的海上油气田开发方式相比较,水下生产系统可以依托现有生产设施进行开发,具有开发成本低、建设周期短、开发效益高的特点。通过调研国外水下生产系统发展现状,评估国内海洋工程设计、建设、施工能力,以系统的可靠性、安 The key to fully tap the natural gas resources in a large number of marginal gas fields existing in the periphery of the fully-installed oil and gas fields in the East China Sea is to find a cost-effective way for the development of the marginal gas fields. The application of underwater production systems makes it possible to develop cost-effective marginal gas fields. Underwater production system is a new technology for the development of offshore oil and gas fields. Compared with the traditional development methods of offshore oil and gas fields, the underwater production system can rely on the existing production facilities for development, which has the characteristics of low development cost, short construction period and high development benefits . Through the investigation of the status quo of the development of foreign underwater production systems, assessment of the domestic marine engineering design, construction, construction capacity, with the system reliability, safety