Core Insights - The Shell Nigeria HI project, undertaken by CNOOC Engineering Co., Ltd., has reached a significant milestone with the completion of the main construction of the upper modules at the Tianjin Intelligent Manufacturing Base, marking a new phase in the collaboration between CNOOC Engineering and Shell [1] - The project is notable as it is the first time CNOOC Engineering has acted as the general contractor for Shell, encompassing design, procurement, and construction responsibilities, which lays a foundation for further expansion into the international high-end oil and gas engineering market [1] Group 1 - The project team is currently in the final debugging phase, aiming for timely delivery by mid-January [1] - Key tasks include conducting pressure tests on process pipelines, which are critical for ensuring the strength and sealing of the pipelines, directly impacting the safety and stability of offshore production [1] - The project has successfully completed 68 pipeline pressure test packages, with over 37,000 meters of cable laid and 1,147 cable connections made, achieving a 99.98% first-pass welding rate for critical path pipelines [2] Group 2 - The project team has implemented an integrated, modular, and standardized operational model to enhance construction efficiency and ensure seamless workflow [2] - Resources are dynamically allocated, with two-shift operations at critical work nodes to effectively safeguard the overall project schedule [2] - The project is on track to start the new year positively, with a focus on maintaining quality and progress under tight deadlines [2]

Group 1 - The successful installation of the Huizhou 25-8DPPB platform's jacket marks a significant advancement in China's deepwater jacket installation technology, enhancing the country's offshore oil and gas equipment manufacturing capabilities and ensuring energy security [1][2] - The Huizhou 25-8 oil field is located approximately 120 kilometers southeast of Shenzhen, with a water depth of about 102 meters. The new platform integrates oil, gas, water treatment, and power generation functions, optimizing resource utilization [1] - The jacket structure consists of 8 legs and 12 skirt piles, standing at a total height of 116 meters, equivalent to a 40-story building, with a base area of 4,800 square meters, comparable to 12 standard basketball courts, and weighing around 12,000 tons, equivalent to 10,000 family cars [1] Group 2 - The jacket platform is the most widely used offshore natural gas production facility globally, consisting of a lower jacket and upper production facilities, serving as the foundation for supporting the massive structure of offshore oil and gas platforms [2] - The installation process faced challenges due to frequent typhoons and strong waves in the sea area, increasing the complexity and risk of the operation [2] - The installation utilized sliding launch technology, leveraging the jacket's own weight and hydraulic jacks to smoothly slide the jacket from the "Ocean Oil 229" vessel into the sea, with real-time adjustments made for precise positioning [2] Group 3 - In recent years, China's large jacket installation capabilities have significantly improved, forming a comprehensive technical system covering design calculations, simulation, transportation, sliding launch, and precise positioning, ranking among the top globally in terms of construction scale, individual weight, and total tonnage [3] - Successful implementations of large jacket installations, such as Liwan 3-1 and the "Haiji" series, have provided solid support for the development of China's deepwater oil and gas resources [3]