Zhong Guo Zi Ran Zi Yuan Bao·2025-08-19 02:52Core Viewpoint - The "Xuanji" geological rotary steering drilling system developed by China National Offshore Oil Corporation (CNOOC) has achieved significant advancements in directional drilling technology, enabling precise targeting and real-time data transmission over long distances [1] Group 1: Technological Advancements - The "Xuanji" system has transmitted over 500,000 curves and exceeded 500G in total data volume, marking a leap in China's oil and gas directional drilling technology [1] - This technology, referred to as "deep earth guidance," allows for precise drilling along reservoir boundaries and targeting deep-layer objectives [1] - The system has achieved a 40-fold increase in transmission speed, reaching world-class levels [1] Group 2: Operational Achievements - The system successfully conducted remote data transmission over 9,000 kilometers from China to Uganda, hitting deep earth targets [1] - In complex geological operations exceeding 5,000 meters, the Chinese technical team remotely controlled downhole equipment in Uganda, overcoming various technical challenges [1] - The Ugandan Petroleum Authority has highly praised the performance of the "Xuanji" system [1] Group 3: Application and Expansion - The "Xuanji" system is currently being applied on a large scale across all offshore and onshore oil fields in China [1] - The technology has also been promoted to countries involved in the Belt and Road Initiative, including Indonesia and Iraq [1]