The study highlights the vital role of shale reservoirs in China's energy sector. By incorporating CO2 fracturing, these reservoirs not only boost oil recovery but also effectively store large amounts of CO2. The study, titled "Carbon Storage Potential of Shale Reservoirs Based on CO2 Fracturing Technology," explores the complex mechanisms of CO2 storage in shale, including adsorption and diffusion processes, using data from the GYYP1 well in the Songliao Basin.
Researchers used advanced numerical simulations to analyze the interaction between CO2 and shale rock. Initial results showed that 22.13% of CO2 was adsorbed during the fracturing process, with ongoing diffusion increasing the total CO2 adsorption by 26.02%. This creates a stable, long-term storage solution within the shale formations.
The findings indicate an overall CO2 storage efficiency of 80.15% over ten years, underlining the significant potential of CO2 fracturing technology. It is estimated that around 1000 future wells in Gulong shale oil reservoirs could achieve similar results, potentially storing nearly two million tons of CO2 by 2030. These results are crucial for advancing China's dual goals of reaching a carbon peak and achieving carbon neutrality.
The study not only confirms the effectiveness of CO2 fracturing in enhancing oil recovery and reducing carbon emissions but also emphasizes the need for ongoing innovation in energy technologies. As China moves toward its carbon neutrality goals, such initiatives are key to fostering a more sustainable energy landscape.
Research Report:Carbon Storage Potential of Shale Reservoirs Based on CO2 Fracturing Technology
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