【Ten Years of Rapid Development in Chemical Engineering Equipment】2806-2025: The largest oil and gas platform in China’s Beibu Gulf completed its floating installation
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This post was last edited by HaiChuanLaoYu on 2025-11-7 at 22:20. Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】A continuously updated summary thread – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On November 6, Ocean Oil Engineering Co., Ltd. reported that the Weizhou 11-4 CEPD platform, located in the Beibu Gulf area of Guangxi, has successfully completed its floating installation, marking significant progress in the project’s development. The Weizhou 11-4 oil field is China’s first self-operated oil field in the South China Sea to be developed independently in accordance with international standards. The Weizhou 11-4 CEPD platform installed this time is a multi-functional drilling and production platform with 3 decks and 8 legs, incorporating functions such as drilling and oil and gas processing. It is 49.5 meters high, 87 meters long, and 35 meters wide, covering an area larger than that of 7 standard basketball courts ； Equipped with 134 sets of production and processing equipment, the platform has a total weight of over 14,000 tons, making it the heaviest and largest offshore oil and gas platform in the Beibu Gulf area. This platform was independently designed, constructed, installed, and operated by CNOOC. Yin Yankun, the chief engineer of the comprehensive adjustment project for the Weizhou 11-4 oil field at CNOOC Zhanjiang Branch, said that the platform uses two sets of 25-megawatt-class power generation equipment developed independently in China, with a domestic production rate of 95% for the key components of these units. The offshore installation takes place in winter, when the weather in the Beibu Gulf is changeable and the sea conditions are severe. The workers, on the rough sea surface, use barges to transfer loads, enabling precise docking of 10,000-ton modules with the jacket. Wang Biao, the installation manager for the comprehensive adjustment and joint development project of the Weizhou 11-4 oil field by CNOOC Engineering, explained that digital tools are used in this project for simulation and computational analysis, to accurately formulate floating support plans and to carry out simulation exercises. During the floating process, the project employed measures such as coordinated control of the vessel by multiple tugboats to achieve precise one-time floating and positioning of the upper module. It is understood that once the platform is completed and put into operation, it will help expand the Weizhou 11-4 oil field into the third transportation and processing center in the Weizhou oil field complex. Together with the existing facilities, these will form a network of \"three offshore processing centers plus one onshore terminal,\" providing solid support for ensuring energy security. China has successfully completed the floating installation of 52 large offshore platforms in total; the maximum floating capacity reaches 32,000 tons, with the total weight of the platforms floating at over 700,000 tons. Key technologies for floating installations under all conditions, across various scenarios, and in all marine areas have been developed, including those for high-position floating, low-position floating, and dynamic positioning.
The Weizhou 11-4 CEPD platform is a multi-functional drilling and production platform with 3 floors and 8 legs, integrating functions such as drilling and processing. It stands 49.5 meters tall, is 87 meters long, and 35 meters wide; its projected area exceeds that of 7 standard basketball courts. Equipped with 134 sets of production and processing equipment, its total weight exceeds 14,000 tons, making it the heaviest and largest offshore oil and gas platform in the Beibu Gulf area. At the same time, this platform is equipped with two sets of 25-megawatt power generation units developed independently in China, namely the “CGT25-EA gas turbines”. These turbines feature dual-fuel compatibility and the ability to switch between fuels online, allowing them to operate stably in extremely challenging marine environments characterized by high temperatures, high humidity, and high salt levels. The proportion of domestically produced components in these units exceeds 95%, placing their technical level at the forefront of the domestic industry. During the construction of the project, it coincided with the peak period for building the Qingdao manufacturing base, resulting in a shortage of construction ramp resources. To address this issue and accelerate construction progress, the project team introduced an innovative \"modular + integrated\" construction approach, implemented lean management practices across the board, and established a quality and safety management system that covered all employees and all stages of the process. As a result, the integration construction completion rate exceeded 99%, while the first-pass success rate for key welds reached 99.95%. Additionally, an excellent safety record was achieved, with zero accidents over 3.322 million man-hours of work.
This unit will serve as the main power plant for the offshore platform, utilizing domestically produced high-power gas turbine generators. The core unit of the CGT25-EA gas turbine can deliver an output power of 26 megawatts under ISO conditions. It features compatibility with both natural gas and diesel as fuel sources, as well as the ability to switch between them online, thereby enhancing the operational flexibility and energy supply reliability of offshore platforms. The unit features a modular integrated design, offering a compact structure, simple operation, and efficient maintenance, making it suitable for the harsh marine environments and space constraints. Faced with the dual pressures of heavy tasks and tight deadlines, the project team demonstrated a high level of professionalism and technical expertise, advancing all tasks in an orderly manner. Under the strict supervision of the owner and China Classification Society, as well as the close cooperation of the commissioning unit, various tests were successfully completed, including the ignition tests, mechanical commissioning, performance evaluations, and load variation tests for the two units; simultaneous operation of both units was also achieved successfully. During the dual-machine synchronization testing phase, the project team addressed the technical challenges related to the dynamic pressure coordination in the liquid fuel system by carrying out multiple rounds of parameter optimization and verification of fluid control characteristics. Through precise adjustments and system testing, pressure balance under complex operating conditions was ultimately achieved. This measure not only ensures high-precision control during the coordinated ignition process of multiple machines, but also lays a solid foundation for the subsequent reliable operation of the system and the progress of key tasks. The successful on-ground parallel operation test of two domestic high-power dual-fuel gas turbine generator sets has marked the official entry of the CGT25-EA gas turbine generator set as the primary power unit for such platforms into the stage of mature application, further strengthening the foundation for the development of related industries. Currently, the platform is undergoing preparations for deployment at sea, with sea trials expected to be completed this year and commercial operation to commence thereafter. Unit 703 will continue to provide technical support throughout the entire cycle of offshore commissioning and operational deployment of the units, striving to ensure their smooth delivery and long-term stable operation. It will also contribute to enhancing China’s core competitiveness in high-end equipment manufacturing and advancing the green and low-carbon transformation of the energy sector.
【Ten Years of Great Development in Chemical Engineering Equipment】From 2806 to 2025: Dalian Institute of Chemical Physics’ new fixed-bed process for producing hydroquinone via phenol and hydrogen peroxide hydroxylation passes the scientific and technological achievement evaluation. https://bbs.hcbbs.com/thread-5704724-1-1.html (Source: Haichuan Chemical Industry Forum)