World’s first 100,000-ton semi-submersible deepwater oil rig ready for production
The photo taken on May 12, 2021 shows the “Deep Sea No.1” energy station at the Lingshui 17-2 gas field off the coast of southern China’s Hainan Island Province. The Lingshui 17-2 gas field is China’s first self-developed deepwater gas field, with an average operational water depth of 1,500 meters. (Photo: Xinhua)
Shenhai Yihao (DeepSea No.1), the world’s first 100,000-ton deep-water semi-submersible oil production and storage platform as well as the first Chinese mothership specifically designed for the manned submersible Jiaolong, was put into service on Friday.
The power plant successfully completed the installation of all equipment on May 31 and is expected to produce an annual output of over 3 billion cubic meters of natural gas. Its commission marks a major advance in the exploration and development of oil and gas in the deep sea in China, from a water depth of 300 meters to 1,500 meters, China Central Television reported Thursday.
The power station will be used to develop the “Deep-sea No 1” gas field, discovered in August 2014 in the Lingshui region of the South China Sea, to a maximum depth of 1,500 meters. This is the first major oil and gas discovery from China’s self-exploited deepwater exploration.
The China National Offshore Oil Corporation officially started the underground engineering construction works of the gas field in 2018.
The difficulty of development and the complexity of constructing the facilities of the “Deep-sea No 1” gas field are unmatched in offshore oil development, said You Xuegang, project manager.
During the installation of the power plant, three world-class innovations and 13 nationally initiated technologies were adopted, setting a record in the speed of construction of similar platforms around the world, he said.
The gas field can meet a quarter of the gas demand in the Guangdong-Hong Kong-Macao Greater Bay Area by providing clean energy from the deep sea through the submarine pipeline around the island of Hainan. It will become a new center for energy supply in the South China Sea.