Core Insights - China National Offshore Oil Corporation (CNOOC) has achieved significant progress in the large-scale application of offshore heavy oil thermal recovery technology, with cumulative production exceeding 5 million tons, making China the first country globally to realize large-scale thermal recovery development of offshore heavy oil [1] Group 1: Technology and Equipment - Heavy oil, characterized by high viscosity, density, and poor flowability, poses significant extraction challenges, especially in offshore environments where operational space is limited and costs are high [1] - CNOOC has developed world-leading equipment capable of withstanding temperatures up to 350°C for thermal recovery, including compact and efficient thermal injection equipment, downhole safety control systems, and long-lasting sand control devices [1] - The company has also designed and constructed the world's first mobile thermal injection platform, "Thermal Recovery No. 1," filling a gap in China's offshore heavy oil thermal recovery equipment sector [1] Group 2: Production Areas - The offshore heavy oil thermal recovery operations are primarily concentrated in the Bohai Sea, with key thermal recovery oil fields established, including Nanpu 35-2, Luda 21-2, and Jinzhou 23-2 [1]