China National Offshore Oil Corporation (CNOOC) announced on the 8th that the central processing platform for the first phase of the Kenli 10-2 oilfield cluster development project has completed its float-over installation. This achievement sets new records for both size and weight of offshore oil and gas platforms in the Bohai Sea region, marking a significant milestone in the project’s construction progress.
The central processing platform installed this time is a three-deck, eight-legged multifunctional offshore platform that integrates production and living-quarters. Standing 22.8 meters tall with a projected area equivalent to nearly 15 standard basketball courts, it has a design weight exceeding 20,000 metric tons, making it the heaviest and largest offshore oil and gas platform in the Bohai Sea. As its size exceeded the capacity limits of China’s domestic offshore floating cranes, the float-over installation method was employed for its marine installation.
China National Offshore Oil Corporation (CNOOC) announced the successful float-over installation of the central processing platform for Phase I of the Kenli 10-2 oilfield development project. The platform was transported to the operation site by the main installation vessel ” Hai Yang Shi You 228″.
As of now, China has successfully completed float-over installations for 50 large offshore platforms, achieving a maximum float-over capacity of 32,000 tons with a cumulative total exceeding 600,000 tons. The country has mastered comprehensive float-over technologies including high-position, low-position, and dynamic positioning float-over methods, establishing all-weather, full-sequence, and pan-maritime installation capabilities. China now leads the world in both the variety of float-over techniques mastered and the complexity of operations performed, ranking among the global forefront in terms of technical sophistication and operational difficulty.
To accelerate the conversion of reserves into production, the Kenli 10-2 oilfield has adopted a phased development strategy, dividing the project into two implementation stages. With the completion of the central platform’s float-over installation, the overall construction progress of Phase I development has exceeded 85%. The project team will strictly adhere to the construction timeline, enhance project execution efficiency, and ensure achieving production commencement within this year.
The Kenli 10-2 oilfield is located in the southern Bohai Sea about 245 km from Tianjin, with an average water depth of around 20 meters. It is the largest lithological oilfield ever discovered offshore China, with proven geological crude oil reserves exceeding 100 million tons. The Phase I project is planned to begin production within this year, which will support the Bohai Oilfield’s annual production target of 40 million tons of oil and gas, while further strengthening energy supply capacity for the Beijing-Tianjin-Hebei region and the Bohai Rim area.
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Post time: Jun-12-2025