- Business
- Offshore Oil Engineering Co., Ltd. (600583.SS), a subsidiary controlled by China National Offshore Oil Corporation, serves as China's leading general contractor for offshore oil and gas engineering projects, providing end-to-end engineering, procurement, construction, installation, commissioning, and maintenance services; core offerings encompass offshore oil and gas field development including fixed platforms, jackets, topsides, FPSOs, semi-submersibles, TLPs, and FLNGs; subsea pipelines, cables, risers, and PLEMs up to 1500m water depth; onshore LNG modules, refining, and petrochemical projects; offshore wind power installations; underwater engineering inspection, repair, and ROV operations; high-end skid-mounted equipment manufacturing; and marine energy lifecycle solutions such as platform retrofitting, decommissioning, and quality inspection. Headquartered in Binhai New Area, Tianjin, with major fabrication bases in Qingdao, Zhuhai, and other sites totaling nearly 4 million square meters, plus a fleet of 19 specialized vessels including deep-water pipe-layers and 7500-ton crane vessels, the company operates across the South China Sea, Bohai Sea, East China Sea, and internationally in over 20 countries including Thailand, Qatar, Saudi Arabia, Brunei, and the US Gulf of Mexico, serving clients such as CNOOC, PTTEP, QatarEnergy, Saudi Aramco, Shell, and Petrobras. Founded with over 60 years of development and listed on the Shanghai Stock Exchange in February 2002, Offshore Oil Engineering employs more than 9800 professionals and ranks among the top Asia-Pacific EPCI contractors, with capabilities in ten core technologies like deep-water floating platforms, super-large offshore structures, and modularization, alongside equipment sequences for large-scale lifting, pipe-laying, and deep-water ROVs. Recent developments include securing a landmark USD 800 million long-term EPCI contract in November 2025 from PTTEP for the Bundled Phases 4 project offshore Thailand, involving wellhead platforms, subsea pipelines, and modifications under a 2027-2029 framework; winning a USD 4 billion EPC contract from QatarEnergy in October 2025 for over 60 offshore facilities, 40 subsea pipelines, platform retrofits, and decommissioning; achieving a record mega-deal in the Middle East in September 2025; and expanding into clean energy with onshore LNG and offshore wind projects amid a strategic shift toward internationalization, low-carbon business structures, standardization, digitalization, and full industrialization.