Core Insights - The daily crude oil production of China's first multi-layer heavy oil thermal recovery oil field, Jinzhou 23-2, has surpassed 1,600 tons, marking a significant achievement in the industry [1] - This breakthrough challenges the previous industry perception that offshore thin interlayer heavy oil could not be developed on a large scale [1] - The success is attributed to the substantial advancements in directional well multi-layer combined extraction technology developed by China National Offshore Oil Corporation (CNOOC) [1] - This development is expected to inject strong momentum into the Bohai Oilfield's target of producing 40 million tons [1]