中国最大油气田连续四年产天然气突破500亿立方米

Core Insights - The article highlights that Changqing Oilfield, China's largest oil and gas field, is projected to produce over 51 billion cubic meters of natural gas by 2025, maintaining an annual output exceeding 50 billion cubic meters for four consecutive years [1] Group 1: Production and Development - Changqing Oilfield has developed 15 gas fields, including Jingbian, Yulin, and Sulige, to meet the gas demand of over 50 major cities in China [1] - More than 85% of the natural gas produced by Changqing Oilfield comes from challenging "low permeability, low pressure, and low abundance" tight gas [1] - The oilfield has implemented innovative technologies to address issues such as declining production from old wells and decreasing formation pressure, aiming to enhance gas output by 2.6 billion cubic meters through the revitalization of 14,000 old wells [1] Group 2: Technological Advancements - Changqing Oilfield's research team has developed original geological theories for rapid acquisition of tight gas resources and mastered 30 key technologies across six categories, including 3D seismic, fast drilling, and volumetric fracturing [1] - The oilfield plans to increase new well production capacity by adopting integrated geological engineering and "factory-style" operations, with over 1,900 new wells expected to be put into production, contributing more than 2.8 billion cubic meters of gas [1]