Core 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]

Core Insights - The "Xuanji" system developed by China National Offshore Oil Corporation (CNOOC) has achieved a significant milestone in oil and gas directional drilling technology, with over 500,000 curve transmissions and a total data volume exceeding 500G, equivalent to the data from 1,000 wells or a single well of 1 million meters [1] - This revolutionary technology allows for precise drilling towards deep targets and along reservoir boundaries, representing the highest level of drilling technology globally [1] Group 1 - The "Xuanji" system has established a real-time data transmission link from the well site to the cloud and application end, enabling high-speed communication for deep data transmission [1] - The system utilizes fluid pressure wave transmission technology to efficiently and stably transmit formation information across various media, successfully creating a communication channel over 9,000 kilometers between China and Uganda [1] - The technology team in China has improved the data transmission rate from 1bps to 40bps, achieving world-class standards and creating an end-to-end control loop from downhole instruments to decision centers [2] Group 2 - The "Xuanji" system has been applied on a large scale in important oil fields across China and has been promoted to countries involved in the Belt and Road Initiative, including Indonesia, Iraq, and Uganda [2] - The system has completed 151 operations overseas, with a cumulative drilling length of 120,000 meters, establishing a comprehensive industrial layout and global application [2] - The Ugandan Petroleum Authority has highly praised the "Xuanji" system for its capability in global systematic collaborative operations, providing strong technical support for the exploration and development of complex oil and gas fields [2]

▲"璇玑"系统在乌干达进行作业 "云上千·百万"！中国海油"璇玑"实现超远程 油田钻探技术新突破 8月14日，中国海油"璇玑"地质循轨旋转导向钻探系统（以下简称"'璇玑'系统"）搭建的"井—地—基"全 链路高速通讯通道累计传输曲线超过50万条，总数据量突破500G，相当于1000口井的总数据量，或一 口100万米井的全部数据，实现了我国油气定向钻探技术的"云上千·百万"里程碑式跨越。 "璇玑"系统是我国油气勘探开发领域的一项革命性、颠覆性技术突破，可在钻探过程中"瞄着深层靶点 去""沿着储层边界钻"，是地质勘探和油气开发必备的"深地制导"革命性技术，代表着当今世界钻井技 术发展的最高水平。 "璇玑"系统通过数字化技术构建了"井场端—云端—应用端"的实时数据传输链路，实现"深地数据云上 传播"的高速通讯能力。在本次实现"云上千·百万"里程碑的作业中，"璇玑"技术团队创新采用流体压力 波传输技术，实现地层信息在湍流流体、单芯电缆、大气环境等多介质中高效稳定传输，首次搭建 起"中国—乌干达"超9000公里的"井—地—基"全链路高速通讯通道，成功超远程命中深地靶点，大幅提 升了海外复杂井况钻探作业整体稳定性。 ▲中国 ...

Core Viewpoint - China National Offshore Oil Corporation (CNOOC) has achieved a significant milestone in directional drilling technology with its "Xuanji" geological tracking and rotary directional drilling system, establishing a high-speed communication channel that has transmitted over 500,000 curves and exceeded 500GB of data, equivalent to the total data from 1,000 wells or a single well of 1 million meters [2][4]. Group 1 - The "Xuanji" system represents a revolutionary technology in geological exploration and oil and gas development, enabling precise targeting of deep reservoirs and enhancing drilling efficiency [2][3]. - The system has established a real-time data transmission chain from the well site to the cloud and application endpoints, achieving high-speed communication capabilities for deep data transmission [2][3]. - The technology team utilized fluid pressure wave transmission technology to ensure stable data transmission across various media, successfully creating a communication channel over 9,000 kilometers between China and Uganda [2][3]. Group 2 - The transmission rate from the well to the ground has improved from 1bps to 40bps, reaching world-class levels, allowing for an end-to-end control loop from downhole instruments to decision centers [3]. - The "Xuanji" system has been applied on a large scale across important oil fields in China and has been promoted to countries involved in the Belt and Road Initiative, including Indonesia, Iraq, and Uganda, with a total of 151 operations and 120,000 meters drilled overseas [4]. - The system has been highly praised for its capability to support complex oil and gas field exploration and development, providing robust technical assurance for challenging drilling conditions [4].