With the development of offshore oil and gas field enters into deep water constantly, subsea production system has become the main development mode in deep water development. Subsea Inline manifold (ILM) is common facilities in subsea production system and is used to gather oil and gas from the side subsea wells. Two subsea ILMs has been adopted in Panyu 35-1/35-2 Gas field with water depth range from 194 to 338 m in South China Sea. System integration test (SIT) is very important for the subsea production facilities. This paper states the flow chart, master equipment, purpose and precautions for each test of ILM SIT, which collects great technology for the development of subsea production system.

Due to the limitation of the manufacturing industry of our country, there is no specially Manufacturing and production base for underwater production facilities. Process planning technology is the key of building a set of complete manufacturing system of underwater production facilities. So the process planning technology of the key components of underwater production facilities is researched on the paper. And a process design system based on Creo2.0 is developed. The processing of the key components of underwater production facilities can be designed on this system.