China's longest deepwater oil and gas pipeline has entered the final stage before operation.
This follows the completion of the pipeline in waters off South China's Hainan Province, China Media Group reported.
The 115.5-kilometer trunk pipeline utilises 20-inch large-diameter seamless steel pipes and bimetallic composite pipes.
"We have successfully resolved world-class technical challenges in the construction of ultra-long, ultra-high, and suspension-span submarine pipelines, achieving more than 10 technological breakthroughs," said Guo Qing, the project manager of the second phase project.
Submarine pipelines are the primary means of transporting offshore oil and gas, and the deeper the water, the greater the engineering difficulty.
The second phase of the Shenhai-1 project is located in an area with complex geological conditions and represents the largest span of submarine pipelines in China.
To accomplish this installation, a series of deep-sea oil and gas equipment, including Asia's first 3,000-meter deepwater pipe-laying vessel and the nation's first deepwater multifunctional engineering vessel, were independently designed and constructed.
New oil and gas pipeline in China nears completion
