This Spring Festival, 103 employees of Lufeng Oilfield in the east of the South China Sea, 250 kilometers southeast of Shenzhen, stuck to the "Haiji No.1" drilling and production platform. In Beijing, thousands of miles away, the "Haiji No.1" research team led by Fu Dianfu, vice president of CNOOC Research and Design Institute, is also paying close attention to the operation of the platform. business as usual. "Haiji No. 1 has withstood the test of strong typhoons such as' saddle 'and' niger '. The fact has proved that the 300-meter deep-water jacket model has been successful." Fu Dianfu proudly told the reporter of Science and Technology Daily. "Haiji No. 1" drilling and production platform is the first oil drilling and production platform developed in 300 meters of water depth in China, known as "the first deepwater jacket platform in Asia". Behind its "successful employment" is the unremitting innovation and search of CNOOC's research team. The site selection "speak with data" jacket is an important structure in offshore oil exploitation. In short, it is a steel frame fixed on the seabed to support the oil production platform above. To make this huge object stand on the sea bottom, first of all, we must understand the underwater environment. The South China Sea where the "Haiji 1" is located, together with the North Sea of Norway and the Gulf of Mexico of the United States, is known as the "three worst sea areas in the world". Internal waves occur frequently in the South China Sea, and Lufeng oilfield block is on the path of typhoon development. At the bottom of the sea, there are a lot of sand waves in Lufeng oilfield block, and some sea areas also have adverse geological conditions such as landslides and faults. Why does "Haiji I" "prefer to travel in the Tiger Mountain" and challenge the "world-class" marine engineering problems? This is because the sea area with a depth of 300 meters will become an important battlefield for China's offshore oil and gas development. China is rich in offshore oil and gas resources, with the oil and gas resources in the South China Sea accounting for more than 3/4 of the total, and the proved oil geological reserves in the sea area with a water depth of 200 meters to 400 meters alone exceed 300 million tons. Make up your mind to do what you have to do. Xie Botao, the professional director of environmental conditions of the "Haiji No.1" research team, used the method of combining seabed topography survey, sand wave monitoring and numerical simulation to set up cement piles at the site to monitor its changes, and simulated the impact of various potential factors on sand wave and ridge migration in the computer. Whenever he gets the latest monitoring data, Xie Botao always corrects his understanding of the movement and change law of the sand ridge of Shabo according to the actual situation. This monitoring will last for two years. "Collect data, analyze data, find rules in the data, find evidence, and speak with data." Xie Botao said that no matter what problem, you can always find the correct answer by spending more time in the sea and spending more nights. With the data "printed" in his mind, Xie Botao also has a deep understanding of the South China Sea. At a discussion with the foreign side, Xie Botao said "unreasonable" after hearing the data provided by the other side. The other company verified that this was true, and even the reason for the error was exactly the same as he said. "It's like someone moving something in their home, and they can find something wrong at once," Xie said. Based on these data, the joint research team moved the site of the "Haiji 1" platform to the southeast for about 140 meters, so that the seabed at the site changed from irregular uneven landform to relatively regular stepped landform. They gave the jacket