On June 6, the first deepwater multifunctional subsea manifold system independently designed, constructed and commissioned by COOEC was officially delivered in Tianjin, marking an important breakthrough made by COOEC in the independent research, development, design, manufacture and testing of subsea oil and gas production equipment.
Subsea manifolds are mainly distributed among wellheads on the seabed to perform a number of important functions, such as collecting oil and gas at wellheads, distributing electric and hydraulic power, and performing underwater control and monitoring. Known as subsea “hubs of oil and gas”, subsea manifolds represent one of the core technologies and equipment for the development of deepwater oil and gas fields and play an important role in collecting deep-sea oil and gas and transferring them to the “processing centers”——offshore platforms.
Since 2019, COOEC has overcome a series of technical challenges, such as control system integration, 3D design of complex subsea structures, operation and design of control and monitoring equipment such as ROVs (remotely operated vehicles), and design of compatible interfaces. It has integrated advantageous domestic resources for scientific research, independently developed and manufactured a variety of key components including subsea hydraulic valves, connectors, and multiphase flowmeters, completed the type test and certification of these products according to the stringent requirements of applicable international industrial standards, and passed the onsite witness by Det Norske Veritas (DNV), an authoritative international third-party certification body. May key technical indicators have reached the world-leading level.
The multifunctional subsea manifold delivered this time consists of 11 pieces of key control and monitoring equipment independently developed by COOEC, such as the subsea distribution unit, control module, and router. This manifold will be used for the development of CNOOC’s Dongfang (DF) Gas Fields Cluster.