Zhong Guo Neng Yuan Wang·2025-09-17 07:58Core Viewpoint - China Petroleum & Chemical Corporation (Sinopec) has made significant progress in the "Deep Earth Engineering: Sichuan-Chongqing Natural Gas Base," with two evaluation wells in the Sichuan Province's Ziyang shale gas field exceeding a production capacity of one million cubic meters, marking a new record for shale gas testing in China [1][3]. Group 1: Production Achievements - The Ziyang 2-501HF well achieved a daily gas production of 1.407 million cubic meters, setting a new record for shale gas testing in China [1]. - The platform where the two wells are located has already put into production three wells, with each well maintaining a stable daily gas production of over 150,000 cubic meters, indicating a promising outlook for the efficient development of ultra-deep shale gas in the Sichuan Basin [1]. Group 2: Geological and Technical Innovations - The Ziyang gas field's production layer is from the Cambrian system, which is the oldest shale system globally to achieve large-scale exploration, representing a new type of shale gas [3]. - Sinopec's Southwest Petroleum Bureau has implemented the first ultra-deep shale gas development experimental well group at the Ziyang 2 well platform, utilizing a combination of natural and artificial fractures to unlock nearly 5,000 meters of ultra-deep shale gas reservoirs [3]. Group 3: Engineering Challenges and Solutions - The geological engineering conditions in the Ziyang area are complex, with challenges including thick strata, deep burial, high pressure, and high temperature [5]. - Sinopec's team has enhanced drilling engineering by integrating geological and engineering approaches, applying high-temperature resistant, precise pressure control, and efficient sealing technologies to achieve safe and rapid well completion [5]. Group 4: Strategic Importance of Shale Gas Development - The successful high production from Cambrian shale gas confirms the potential for large-scale reserves and production, supporting the expansion of shale gas development into broader new fields and types [7]. - Given China's resource characteristics of "rich coal, poor oil, and scarce gas," the exploration and development of shale gas hold significant strategic importance for the country's energy landscape [7].