长庆油田页岩油累计产量破2000万吨

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]