【Ten Years of Rapid Development in Chemical Processing Equipment】1443–2023: The World’s First 100,000-ton Deepwater Semi-Submersible Production and Storage Platform

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This post was last edited by Desert Fish on 2024-2-2 09:01. Happy New Year 2024 **********************【Ten Years of Development in Chemical Processing Equipment】A continuously updated summary thread – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** The natural gas from the Shenghai-1 gas field is located southeast of Hainan Island, at depths of over 1,500 meters. In this underwater environment, 11 square-shaped subsea gas production platforms are spread out across a seabed area spanning 50 kilometers from east to west. Above the gas production tree, an orange-yellow offshore oil and gas platform stands on the sea surface. It covers an area equivalent to two standard football fields and is as tall as 40 floors – this is the \"Deep Sea One\" production platform, the world’s first 100,000-ton class deep-water semi-submersible production and storage platform. Utilizing the world’s first column-based oil storage technology, 4 large condensate tanks have been installed within the columns. This also makes the \"Deep Sea No.1\" a deep-sea drilling platform designed and built independently by China. On June 25, 2021, after 525 days of construction, “Deep Sea One” was officially put into operation. At present, \"Deep Sea No.1\" extracts oil and gas from a depth of 1,500 meters, with a daily production volume of 10 million cubic meters – enough to supply 10,000 households for 33 months. On April 10, 2023, CNOOC announced another piece of good news: the \"Deep Sea No.1\" platform has completed its remote-controlled production modification and testing processes, enabling it to maintain continuous, safe, and stable production even during typhoons, thus taking a crucial step toward the full development of an ultra-deepwater intelligent gas field. From following in others’ footsteps to achieving historic leadership with 3 world-class innovations and 13 domestically first-developed technologies, \"Deep Sea No.1\" has brought about significant breakthroughs in China’s deep-water oil and gas exploration as well as in deep-water marine engineering technology. The domestically developed \"Deep Sea No.1\" production and storage platform has marked the beginning of the ultra-deep water era for oil and gas exploration in China’s offshore areas. Phase II of the project is progressing in an orderly manner, with its key equipment already completed and shipped overseas. This oceanic steel giant can not only withstand once-in-a-century super typhoons, but also endure high pressures of over 69 megapascals and high temperatures of 138 degrees Celsius. Due to its large size and complex design, it only takes a little over 20 months to build such an energy station, compared to 38.8 months for similar offshore platforms abroad. “The innovative technologies adopted by Deep Sea No.1 include the use of design analysis methods for semi-submersible production, storage, and offloading platforms to ensure its stability in waves. Once completed, this platform will be able to produce up to 3.25 billion cubic meters of gas per year; after the completion of phase two, the annual production volume will exceed 4.5 billion cubic meters.