长庆气田连续四年产气突破500亿立方米

Core Viewpoint - China National Petroleum Corporation (CNPC) announced that the Changqing Oilfield, the largest oil and gas field in China, is expected to produce over 51 billion cubic meters of natural gas by 2025, maintaining a production level above 50 billion cubic meters for four consecutive years, contributing significantly to national energy security [1][3]. Group 1: Production Capacity and Achievements - The Changqing Oilfield has developed 15 gas fields, including Jingbian, Yulin, and Sulige, and has produced over 700 billion cubic meters of natural gas since it began supplying gas to Beijing in 1997, equivalent to replacing over 90 million tons of standard coal and reducing carbon dioxide emissions by over 1 billion tons [3]. - The oilfield's development is a representation of China's efforts in unconventional natural gas production, with over 85% of its current gas production coming from challenging "low permeability, low pressure, and low abundance" tight gas [3][6]. - In 2022, the Changqing Oilfield established China's first strategic gas production area with an annual output of 500 billion cubic meters, with energy output equivalent to a large oil field producing 40 million tons annually [3][6]. Group 2: Technological Innovations and Strategies - To address challenges such as declining production from old wells and decreasing formation pressure, the Changqing Oilfield has implemented three key technologies: "expanded plunger, compressed bubble drainage, and optimized speed column," resulting in an increase of 2.6 billion cubic meters of gas from 14,000 well interventions [6]. - The oilfield has also focused on new well capacity construction, adopting an integrated geological engineering and "factory-style" operation model, with over 1,900 new wells put into production, contributing to a cumulative gas output of over 2.8 billion cubic meters [6]. - The Changqing Oilfield currently supplies over 160 million cubic meters of gas daily, ensuring stable supply for residential heating and supporting the country's green and low-carbon development [9].