In the critical final sprint to conclude the year, various units of CNOOC Limited have focused on overcoming production and operational bottlenecks, centering their efforts on technological innovation and management optimization to enhance the quality and efficiency of production operations, thereby injecting innovative momentum to achieve the full year's targets and tasks. The Tianjin Branch achieved "Daily Drilling Progress of One Thousand Meters." In mid-December, a well in the "Optimized & Intelligent Drilling and Completion" demonstration project in Block 5/10 of the Penglai 19-3 oilfield was successfully completed, achieving a daily drilling progress exceeding 1,000 meters, becoming the 38th well in the project to reach this "daily kilometer" milestone. A total of 90 development wells have been completed in the area, of which 15 are high-yield wells producing over a hundred cubic meters, achieving an overall speed increase of over 30%, and the project's cumulative crude oil production has exceeded 1 million tons. Guided by the "Optimized & Intelligent" approach, the oilfield's production capacity continues to climb. To achieve precise prediction of shallow gas development intervals, the project team innovatively established and promoted an integrated engineering-geology workflow, utilizing visual fine characterization technology for shallow gas, achieving a simulation accuracy rate of over 85%, providing a strong guarantee for safe and efficient drilling. To ensure wellbore anti-collision safety, the project team broke through traditional technical bottlenecks by introducing continuous inclination tools and solid-state gyro technology, combined with remote anti-collision warning software for real-time 3D analysis, achieving a 100% accuracy rate in collision avoidance and a 100% accuracy rate in hitting the target layer within the dense well pattern. The synergistic application of these technologies has already driven the production of 54 key wells to exceed their planned output. The Zhanjiang Branch has utilized self-developed Christmas trees to help stabilize and enhance production in mature oilfields. Recently, China's first self-developed large-bore (220 mm) single-bore dual-well Christmas tree was successfully applied in the WZ12-2 oilfield, helping the Weixi'nan Oilfield Group achieve a quantum leap in single-well daily water injection capacity from thousands to tens of thousands of cubic meters. Focusing on equipment and process innovation, the Zhanjiang Branch successfully developed the country's first single-bore dual-wellhead assembly with a bore diameter of 220 mm. This equipment achieved systematic breakthroughs in areas such as planar layout, erosion-corrosion resistant flow channel design, and sealing reliability, realizing the engineering progress of achieving "injectability" for tens of thousands of cubic meters of daily water injection. Furthermore, the project team also established a dynamic formation pressure prediction model, effectively balancing formation pressure distribution, reducing the risk of inter-well interference during water injection, and achieving the geological and development goal of "stable injection," providing reliable technical support for long-term safe water injection in the oilfield. Gas and Power Group's model innovation has driven cost reduction and efficiency gains. Since the beginning of this year, the Green Shipping Project Team of the Gas and Power Group has focused on optimizing LNG resource allocation and bunkering models, implementing multiple measures to reduce costs and improve quality in its operations. In the first half of this year, by expanding reverse send-out resources, the project team completed the first reverse send-out operation of bonded LNG resources in Zhuhai, saving 40 tons of LNG fuel per operation compared to previous similar operations. To date, the project team has cumulatively completed 9 reverse send-out operations. Leveraging the large capacity advantage of the "Offshore Oil 301" vessel, the project team actively coordinated with various parties to implement a "one-vessel multi-bunkering" model, saving 25 tons of LNG fuel per operation, reducing operation time by one day, and achieving improvements in both operational efficiency and cost control. Since the beginning of the year, the project team has cumulatively bunkered 1,100 vessels, with a total bunkering volume exceeding 92,000 tons. CNOOC Petrochemicals' early warning system has enhanced risk prevention and control capabilities. This year, Huizhou Petrochemical, under CNOOC Petrochemicals, has utilized the petrochemical big data AI platform to develop and apply real-time diagnostic models based on various algorithms focused on the operating status of key equipment, building an intelligent early warning system covering multiple types of risks. Currently, Huizhou Petrochemical has deployed real-time scaling diagnostic models for 8 high-pressure heat exchangers, covering multiple core production units. This system can automatically assess equipment health based on real-time data, achieving advanced warning of abnormal trends, allowing operators to intervene proactively. The application of such machine learning models can effectively contain equipment risks in their nascent stages, providing a solid guarantee for the long-term, safe, and stable operation of the units. CNOOC Oilfield Technology Services Company has contributed to speeding up and enhancing the efficiency of oil and gas exploration. The self-developed "Four-Comprehensive" core photography system by the CNOOC Experimental Center, part of CNOOC Energy Technology & Services-Oilfield Technology Co., has been put into operation. Addressing the pain points of traditional methods, such as low efficiency and uneven imaging, this system has made breakthroughs in key technologies like intelligent light source control, integrating a fully enclosed dark box and an intelligent mobile device to enable "one-click" acquisition of core images. To date, the system has supported operations for 13 exploration wells, reducing the acquisition time per core by approximately half, and increasing the first-time pass rate of images from 72% to 100%, resolving issues of environmental interference and safety. The related technologies of this system have obtained national invention patents, providing strong support for oil and gas field exploration work. The New Energy Branch's "Complementary Livestock and Photovoltaics" project achieved production ahead of schedule. Facing changes in the wind power industry this year, the production management team of CNOOC's first land-based centralized photovoltaic power generation project—the 40 MW Complementary Livestock and Photovoltaics project in Hezuo City, Gannan—responded rapidly. By implementing a series of operation and maintenance measures, the team ensured the annual power generation challenge target was achieved ahead of schedule. The team refined operational and maintenance management, optimizing inspection routes and check items based on the project's characteristics. To further enhance equipment maintenance efficiency, the team compressed equipment fault handling time by rationally configuring spare parts inventory and conducting multiple rounds of online inspections; they also planned maintenance work for power-off equipment in advance, achieving an annual availability rate of power generation equipment exceeding 99.5%. In early December this year, the project's annual power generation exceeded 50 million kWh, completing the full year's challenge target ahead of schedule.
Comments