【History of Kaichuan Pipelines】Water depth: 1542 meters! China sets another record for submarine pipeline installation
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On June 1, the website of the State-owned Assets Supervision and Administration Commission of the State Council cited information from China National Offshore Oil Corporation (hereinafter referred to as CNOOC), stating that recently, with the installation of the 12-inch subsea pipeline end caps in the sea, the laying of the subsea pipelines from E3 to the south side of E2 at CNOOC’s Lingshui 17-2 project was successfully completed. “The maximum water depth during this construction reached 1,542 meters, setting a new record for underwater pipeline laying in China and marking another breakthrough in the country’s capacity to develop deep-water oil and gas resources. ”The above message reads.
Undersea pipelines are the \"main arteries\" for the transportation of oil and gas at sea, and are regarded as the \"lifeline\" of marine oil and gas production systems. Affected by factors such as seabed instability, steep slopes, low rock strength, and low temperatures, the technical difficulty of laying submarine pipelines increases exponentially as the water depth rises. It is said that submarine pipeline laying is one of the important indicators for assessing the overall level of the **offshore oil and gas engineering industry. The core technologies for laying pipelines in deep-water areas of over 1,500 meters have always been monopolized by a few international oil engineering companies. As China’s first deep-sea oil and gas development project in waters deeper than 1,500 meters, the submarine pipeline installation for the Lingshui 17-2 project marked not only a milestone for CNOOC but also the first time that China’s offshore engineering industry undertook pipeline installation work in such deep waters.
This task was completed by \"Offshore Oil 201\". This vessel is the first self-propelled 3,000-meter deep-water pipe-laying crane designed and built independently by our country; it is also a key member of CNOOC’s \"Deep Sea Fleet\". Since its deployment in 2013, this vessel has broken China’s submarine pipeline laying records more than 20 times, becoming a key piece of equipment for the country’s efforts to develop deep-sea oil and gas resources independently. According to a report by Xinhua News Agency on September 15, 2014, the Lingshui 17-2 gas field was discovered in the South China Sea, 150 kilometers away from Hainan Island; it is the first deep-water, high-yield gas field operated by China itself. The report cited CNOOC’s statement on that day, saying that the drilling platform \"Ocean Oil 981\" produced high volumes of oil and gas during tests in the deep-water areas of the northern South China Sea. Estimates suggest that this is the first major oil and gas discovery resulting from independent deep-water exploration in Chinese waters; the daily natural gas production during testing was 56.5 million cubic feet, equivalent to 9,400 barrels of oil equivalent.
【History of Haichuan Pipes】The summary post is being updated continuously; learn about the development process of various pipes at https://bbs.hcbbs.com/thread-3068575-1-1.html (Source: Haichuan Chemical Industry Forum)