Guan Cha Zhe Wang·2025-09-28 06:53Core Insights - China National Offshore Oil Corporation (CNOOC) announced that the total length of China's subsea oil and gas pipelines has successfully surpassed 10,000 kilometers, marking a significant milestone in the country's marine oil and gas pipeline engineering capabilities after 40 years of technological advancements and engineering practices [1][4] Group 1: Engineering Achievements - The subsea pipeline system is described as the "lifeline" of marine oil and gas production, connecting oil fields and ensuring stable transportation of resources to land terminals [3] - CNOOC has developed a complete technical system for subsea pipeline engineering, including design, construction, installation, emergency response, and maintenance, achieving a high level of autonomy across the entire industry chain [4] - Since the 14th Five-Year Plan, CNOOC has enhanced its pipeline laying capabilities, laying over 1,500 kilometers of subsea pipelines, with the maximum operational water depth reaching 1,542 meters, marking a historic leap from shallow to ultra-deep water [4] Group 2: Technological Innovations - The company has made significant advancements in overcoming technical challenges related to long-distance multiphase transportation of heavy oil and high-viscosity oil, as well as designing and installing pipelines in harsh marine conditions [4] - CNOOC has continuously upgraded its specialized vessels and supporting equipment for pipeline laying, including the development of intelligent monitoring systems and automated welding equipment, significantly improving welding quality and laying efficiency [6] Group 3: Global Contributions - CNOOC has actively participated in energy development projects in countries along the Belt and Road Initiative, laying over 500 kilometers of subsea pipelines in Southeast Asia, the Middle East, and Africa, setting multiple industry records [6] - The company aims to deepen its core technical capabilities in subsea pipeline engineering, enhance the application of domestically produced equipment, and accelerate the digital transformation of its operations to support the construction of a maritime power [7]