The first batch of domestic underwater ball valves

2022-10-23
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The first batch of domestic underwater ball valves made by CNOOC have passed the acceptance

on December 6, two 8-inch 2500 pound domestic underwater ball valves attracted upstream and downstream enterprises to the base successfully passed the factory acceptance, and will soon be used in the underwater wellhead manifold of Wenchang gas field, which means that CNOOC has made a historic breakthrough in the localization of underwater valves

on December 6, two 8-inch 2500 pound domestic underwater ball valves of the Wenchang//gas field group project of CNOOC Zhanjiang Branch successfully passed the factory acceptance and will soon be used in the underwater wellhead manifold of Wenchang gas field, which means that CNOOC has made a historic breakthrough in the localization of underwater valves

underwater valves are mainly box valves and ball valves. As the core equipment of underwater production system, they are very important for the development of underwater oil and gas resources. However, the market and technology of underwater valves have been monopolized by a few foreign valve companies, which not only have high prices and long supply cycles, but also are often controlled by others in the later maintenance

in order to achieve a breakthrough in the localization of underwater valves, Wenchang//gas field group project team, COOEC and the manufacturer jointly carried out special technical research. Professional technicians fully identified the quality risk points during the research and development of underwater valves, and implemented all-round quality control on the design and materials in order to improve the performance, manufacturing and testing process of ABC column. They successfully solved the problems of underwater corrosion prevention, submarine external pressure, underwater actuator, valve reliability and so on, manufactured a prototype, and passed the performance, service life and high-pressure chamber test of American Petroleum Institute (API), Finally, the instruments and meters are formed into a set of technical documents and procedures for the design, material selection, processing, manufacturing, inspection and testing of domestic underwater valves

the successful localization of underwater valves can reduce the purchase price by more than 40%, shorten the supply period by about 5 months, and successfully break the technical blockade of foreign manufacturers

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