【Major Industrial Equipment in the Chemical Industry】462—4000-horsepower LNG-powered offshore oil protection vessel, 2022
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This post was last edited by Desert Fish on 2022-7-28 at 10:29. On the morning of July 26, two 4000-horsepower LNG-powered patrol vessels, the \"Ocean Oil 543/548\", built by China State Shipbuilding Corporation, along with a PX121H platform supply vessel named \"Guohai Minxiang\", were put into service on the same day in Qidong, Jiangsu. With this, the project to build two types of 8 liquefied natural gas-powered patrol vessels for CNOOC Offshore Services by China State Shipbuilding Corporation has been successfully completed, laying a solid foundation for the company to achieve its annual goals. The two types of 8 4,000-horsepower liquefied natural gas-powered patrol vessels represent China’s first application of liquefied natural gas as a clean fuel in marine engineering vessels. They serve as a model for the future increased use of clean fuels in CNOOC’s vessel fleet, and will play a significant role in promoting the cleaner and greener development of China’s offshore oil industry.
Through the joint efforts of all parties, tasks such as the ship’s initial liquefied natural gas filling and the mooring load test of the liquefied natural gas system were all approved on the first attempt. The quality rate of the product was 98%, and all performance indicators met or exceeded the design requirements. In terms of noise and vibration, its performance is excellent; under full-power operation, the measured noise levels in the medical room and control room are well below the specified limits. As the last two of the series of 8 vessels, the \"Offshore Oil 543/548\" ships will be deployed to the coastal waters of the motherland upon delivery, where they will carry out their duties as part of a strong maritime nation, alongside their six sister ships.
LNG-powered guard ships are primarily used for the exploration and extraction of oil and gas at sea, providing services such as supply delivery, protection, rescue, and surveillance for offshore platforms and mobile facilities. The LNG-powered patrol vessel meets the strictest international standards for various emission parameters, enabling a reduction of 20%~30% in carbon dioxide emissions, 100% reduction in sulfur oxides, 90% reduction in nitrogen oxides, and 100% reduction in suspended particulates.
LNG-powered escort ships use ultra-cold LNG as fuel, which imposes extremely high technical requirements on gas storage tanks and delivery pipelines; their construction technology is regarded, along with that of aircraft carriers and luxury cruise ships, as the \"pearls on the crown\" of the world’s shipbuilding industry. In the design and construction of ships, linearly optimized hull shapes are employed; such designs enable ships to **reduce the resistance from seawater and wind during navigation in later operational stages, not only increasing their speed but also effectively lowering energy consumption. At the same time, the research team, in collaboration with domestic strategic partners, established a high-quality supply chain to achieve the domestic substitution of more than 20 sets of key equipment on the ships. Among them, the core LNG storage tanks and gas supply system, the refueling system, as well as the main propulsion thruster system have all seen the localization of intellectual property rights for the first time; the core technologies have been mastered, filling the gaps in China’s LNG-powered patrol ships in terms of design, construction, and core technologies.
The intelligent LNG-powered patrol vessels \"Offshore Oil 542\" and \"Offshore Oil 547\", built by Wuhan Shipbuilding Industry Group Co., Ltd. under China State Shipbuilding Corporation, were successfully delivered in Qidong, Jiangsu on May 28. They are among the first intelligent LNG-powered patrol vessels in China.
It is said that the main feature of these two ships is that they have been upgraded to intelligent vessels based on the original LNG-powered patrol ships. The design team of Wuchan Shipbuilding Group integrated over 30 sets of intelligent devices, more than 40 intelligent sensors, and over 280 intelligent monitoring points into the overall layout of the ship, ensuring not only the proper operation of these intelligent devices but also a rational and aesthetically pleasing arrangement of the equipment and cables. Tian Jun, deputy general manager of Wuchan Shipbuilding Group, said that these are among the first LNG-powered patrol vessels in the world to be equipped with all four types of intelligent systems. Taking the intelligent navigation system as an example, its function is similar to that of an automobile’s autonomous driving system. In situations such as navigation through heavy fog or at night, it can analyze the collected data and information to provide the driver with the best navigation suggestions, thereby assisting in collision avoidance. It is reported that there are over 300 various types of workships in China’s offshore areas used for offshore oil exploration, and prior to this, there had been no precedent for the use of intelligent LNG-powered patrol vessels. The intelligentization of ships can effectively improve their safety, economic efficiency, environmental friendliness, and performance.