Core Viewpoint - China National Offshore Oil Corporation (CNOOC) has achieved a significant breakthrough in the exploration of Paleogene lithology in the Liaozhong sag of the Bohai Bay Basin, successfully drilling high-yield oil and gas wells [1] Group 1: Exploration Achievements - The Liaozhong sag is located in the northern Bohai Sea with an average water depth of 22 meters. The tested well produces approximately 500 tons of crude oil and 20,000 cubic meters of natural gas per day [1] - The region has complex oil and gas reservoir structures, and there have been no large-scale exploration discoveries for many years. CNOOC's research team has made continuous technological advancements and conducted multidisciplinary joint research [1] Group 2: Technological Innovations - CNOOC has established a coupling relationship between sediments and uplifts, innovatively proposing a favorable migration model for Paleogene lithology, which has addressed the scientific challenges of large-scale accumulation in Paleogene lithology [1] - The breakthrough in the Liaozhong sag confirms the significant exploration potential of Paleogene lithology oil and gas reservoirs in the Bohai Bay Basin [1] Group 3: Strategic Implications - The success in the Liaozhong sag promotes the secondary exploration process in old oil fields and provides replicable technical routes and practical experiences for similar exploration in China's offshore areas [1] - Recent discoveries of large and medium-sized Paleogene oil and gas fields in various sea areas by CNOOC highlight the importance of this new finding for ensuring stable energy supply in the Beijing-Tianjin-Hebei region and the surrounding Bohai Sea area [1]

Core Insights - China's offshore oil and gas exploration has achieved significant breakthroughs, particularly in the Bohai Bay Basin's Liaozhong Depression, with the successful drilling of high-yield oil and gas wells [1][3] - The JZ27-6-3 well encountered a 57.4-meter oil and gas layer and reached a total depth of 1,925 meters, producing approximately 500 tons of crude oil and 20,000 cubic meters of natural gas per day [1][3] Exploration Achievements - The region's complex oil and gas reservoir structure had previously hindered large-scale exploration, but China National Offshore Oil Corporation (CNOOC) has made technological advancements to address these challenges [3] - CNOOC established a coupling relationship between sediments and uplifts, innovating a model for the advantageous migration of Paleogene lithologic bodies, which led to the identification of rich oil and gas accumulation zones [3] Strategic Implications - The breakthrough in the Liaozhong Depression confirms the substantial exploration potential of Paleogene lithologic oil and gas reservoirs in the Bohai Bay Basin, facilitating secondary exploration in older oil fields [3] - This discovery is crucial for ensuring stable energy supply in the Beijing-Tianjin-Hebei region and the surrounding Bohai Sea area, while also providing replicable technical routes and practical experiences for similar explorations in China's maritime regions [3]

9月29日，中国海油宣布在渤海湾盆地成功钻获高产油气井。这是JZ27-6-3井测试现场放喷。 (中国海油 供图) 该区域油气储层构造复杂，多年来一直未有规模性勘探发现。中国海油持续推进老油田"接续勘探工 程"，围绕在产油田周边开展新层系、新类型技术攻关。辽中凹陷古近系岩性勘探的重大突破，印证了 渤海湾盆地古近系岩性油气藏巨大的勘探潜力，推动老油区二次勘探进程，也为中国海域类似领域的勘 探提供了可复制的技术路线和实践经验。 近年来，中国海油先后在多个海域实现了多种类型古近系大中型油气田重大发现，不断丰富中国海上油 气资源储备。据介绍，此次在辽中凹陷的勘探新发现，对保障京津冀和环渤海地区能源稳定供应具有重 要意义。(完) 中新社北京9月29日电 (记者 王恩博)记者29日从中国海油获悉，其在渤海湾盆地辽中凹陷古近系岩性勘 探领域取得重大突破，成功钻获高产油气井，进一步夯实了中国海上油气资源储量基础。 辽中凹陷位于渤海北部海域，平均水深22米。探井JZ27-6-3井钻遇油气层57.4米，完钻井深1925米。经 测试，该井日产原油约500吨，日产天然气约2万立方米。 ...