Core Viewpoint - The successful full production of the Liuhua Oilfield's secondary development project marks a significant advancement in China's deepwater oilfield development capabilities, with daily crude oil production reaching a record high of 3,900 tons and expected to exceed one million tons next year [1][3][15] Group 1: Project Overview - The Liuhua Oilfield secondary development project consists of the Liuhua 11-1 and 4-1 oilfields, located at an average water depth of 305 meters, featuring a deepwater jacket platform and a cylindrical offshore oil and gas processing facility [1][5] - Since the first production wells were put into operation in September last year, the project has produced over 900,000 tons of crude oil [1] Group 2: Technological Innovations - The project employs innovative development models using deepwater jacket platforms and cylindrical floating production storage and offloading units, creating a stable oil control and water management technology system [7][13] - The "Haiji No. 2" platform, Asia's first deepwater jacket platform, integrates over 300 advanced technologies and features a digital twin system for optimal maintenance strategies [9][11] Group 3: Production Efficiency - The project has designed 32 production wells with a total drilling depth exceeding 75,000 meters, achieving a significant increase in production efficiency and a reduction in water cut rates [11][13] - The secondary development has successfully extended the oilfield's lifespan by 30 years, demonstrating the effectiveness of the water control technology [13] Group 4: Industry Impact - China's deepwater oil and gas exploration and development capabilities have made historic leaps, with the country becoming one of the few able to conduct independent deepwater operations [15] - The deepwater oil and gas production capacity has surpassed 12 million tons of oil equivalent, contributing significantly to national energy security [15]