Localization of underwater valves in China

Recently, China National Offshore Oil Co., Ltd. Zhanjiang Branch (hereinafter referred to as limited Zhanjiang) came to the news that Wenchang gas field group development projects in the South China Sea 2 domestic underwater ball valves have recently come out of the factory and passed the acceptance. So far, China's underwater valves have been successfully localized, breaking the monopoly of foreign technology, purchasing prices fell by more than 40%, greatly shortening the supply period.
The core equipment of the system. Underwater production systems developed in the 1960s can be combined with floating production platforms and other facilities to form different offshore oilfield development models. Compared with the construction of expensive offshore oil production platform, the system can greatly reduce investment costs and is less affected by natural disasters. It is very suitable for the development of deepwater and marginal oil and gas fields.
Compared with the land valve, the underwater valve has the characteristics of bearing external water pressure, being driven by ROV (underwater vehicle) or hydraulic, and having higher requirements for sealing and corrosion resistance. Its technology and market have been mastered in the hands of a few foreign valve companies, and it is still in the research and development stage in China.