研发新工具，解决井下除锈难（工匠绝活）

Core Insights - Zhao Zengquan, a chief technician at China National Petroleum Corporation, has developed innovative tools to address challenges in oil extraction and pipe maintenance, significantly improving operational efficiency [2][3][5] - The "pumpable recyclable casing inner wall rust removal tool" and "turbine negative pressure local reverse circulation milling tool" are key inventions that have enhanced the safety and efficiency of oil well operations [2][3][4] Group 1: Innovations and Tools - The "pumpable recyclable casing inner wall rust removal tool" utilizes a closed-loop system to remove rust from oil pipes, achieving a 75% increase in efficiency and a 50% reduction in labor input compared to traditional methods [3][5] - The "turbine negative pressure local reverse circulation milling tool" improves the removal of debris and blockages in complex wells, achieving a 100% success rate in field applications and saving over 6 million yuan per single well maintenance [5][4] Group 2: Industry Challenges - Rust on oil pipes has been identified as a major cause of accidents in oil extraction, accounting for over 60% of engineering incident triggers [2][3] - Traditional rust removal methods are labor-intensive and inefficient, leading to safety risks and operational delays [2][3] Group 3: Achievements and Recognition - Zhao Zengquan has led a team that has obtained 39 national invention patents and 49 utility model patents, addressing 109 production challenges since the establishment of the expert studio in 2018 [5][6] - In 2025, Zhao was recognized as a national labor model for his contributions to the industry [2]