Core Insights - China's largest shale oil production base, Changqing Oilfield, has surpassed a cumulative production of 20 million tons of shale oil, marking a new stage in the large-scale development of continental shale oil [1] - The oilfield has drilled 144 horizontal shale oil wells this year, producing over 3 million tons of shale oil, with an annual production target of 3.5 million tons, significantly contributing to domestic energy security [1] Group 1 - The shale oil in the Ordos Basin has thin and heterogeneous reservoirs buried at depths of over 2000 meters, with reservoir pressure significantly lower than conventional oil fields, making natural energy-driven development unfeasible [1] - Changqing Oilfield has conducted 128,000 laboratory experiments and over 80 field development tests since 2011, achieving major breakthroughs in exploration and development theories, technologies, and models [1] - The oilfield has established the world's first continental shale oil field capable of large-scale efficient development [1] Group 2 - To address the technical challenges of ultra-low reservoir pressure, Changqing Oilfield has adopted a core approach of "fracturing and precise energy supplementation," creating artificial channels in dense reservoirs [2] - The company has independently developed 12 key technologies, including soluble metal ball seats and multifunctional fracturing fluids, breaking the technical monopoly of international oil service companies [2] - The application of carbon dioxide enhanced oil recovery technology has increased the oil extraction rate, boosting single well daily production from 1.5 tons to 18 tons, achieving internationally advanced technical levels [2] Group 3 - Changqing Oilfield has innovated a development model of "horizontal well cluster drilling and skid-mounted combined station," setting world records for horizontal sections exceeding 5000 meters and 31 horizontal wells deployed on a single platform [2] - The first domestic three-dimensional oil joint station has been put into operation this year, occupying only 70% of the area of traditional joint stations [2] - The introduction of the first shale oil IoT cloud platform and drone inspection systems has reduced labor by 80% for million-ton-level production units, achieving large-scale efficient development of continental shale oil [2]

Core Insights - The cumulative shale oil production of Changqing Oilfield has surpassed 20 million tons, marking a new stage in the large-scale and efficient development of continental shale oil in China [1] Production and Technology - The shale oil in the Ordos Basin is buried at depths of over 2000 meters, with reservoir pressure significantly lower than conventional oil fields, making natural energy-driven development unfeasible [1] - The permeability of the shale reservoir is only one-thousandth of that of conventional oil fields, posing challenges for effective extraction using conventional techniques [1] - Changqing Oilfield has adopted a core strategy of "fracturing and seam creation + precise energy supplementation" to address technical difficulties, creating artificial channels through fracturing and injecting energy carriers at high pressure to activate the reservoir [1] Technological Advancements - Through a series of technological breakthroughs, Changqing Oilfield has continuously improved the recovery rate of shale oil [1] - The company has independently developed 12 key core technologies, including soluble metal ball seats and multifunctional fracturing fluids, achieving technological autonomy [1] - The application of green and efficient carbon dioxide enhanced oil recovery technology has increased the daily production per well from 1.5 tons to 18 tons, with overall technology reaching an internationally advanced level [1] Development Timeline - Changqing Oilfield has established a significant shale oil production area in the Ordos Basin, providing insights and practical experience for the large-scale and efficient development of shale oil resources in China [1] - The time taken to increase cumulative production from 10 million tons to 20 million tons was only 3 years, compared to 12 years for the initial 10 million tons [1]