CNOOC Development has obtained two national invention patents for the deepwater underwater oil tree feeding device
Jin Bin Hai News(Reporter Zhang Boyan, Correspondent Zhang Yaju, Shaodong, Jiang Chang) Recently, the deep-water subsea oil production tree feeding device - the deep-water located pipe string, independently designed by the new area enterprise CNOOC Development Engineering Technology Company, has obtained two national invention patents.These two patents are "an underwater tubing hanger assisted detachment mechanism and operation method" and "a sealed shear ball valve for deep water"...
Do you want to answer phone calls? It's really practical to teach you not to shut down or hack, and not to be discovered by the other party yet
Do you want to answer phone calls? It's really practical to teach you not to shut down or hack, and not to be discovered by the other party yetThe popularity and convenience of mobile phones have made them an indispensable part of our daily lives. However, sometimes we may not want to answer certain calls, but we do not want to take extreme shutdown or blackout actions...
