渤海钻探公司 超深井固井技术获突破

Core Insights - The company has achieved a significant breakthrough in the application of a self-developed high-efficiency oil-washing isolation fluid in the Sichuan shale gas block, successfully applied in the ultra-deep well Yang101H48-3 with a washing efficiency exceeding 95% [1] Group 1: Technology Development - The technology addresses the technical challenges of cementing quality in oil-based drilling fluid environments, particularly in ultra-deep wells [1] - The Yang101H48-3 well reached a depth of 6220 meters, facing severe challenges such as loss and collapse due to complex formation pressure systems [1] - The company conducted in-depth analysis and over a hundred laboratory tests, leading to the development of a high-efficiency washing agent that reverses the wettability of the wellbore [1] Group 2: Application and Impact - The technology has been scaled up, with a cumulative application in 12 wells in the Sichuan-Chongqing region, and product supply exceeding 100 tons [2] - In key areas such as Northeast and Dagang, the application in 5 wells has significantly improved cement ring bonding quality and cementing success rates, receiving high recognition from construction units and clients [2]