Study Finds that Fracturing Technology Enhances Carbon Dioxide Storage in Shale Formations

A groundbreaking study published in Engineering has revealed the significant carbon storage potential of shale reservoirs through the use of CO2 fracturing technology. The research, conducted by a collaborative team from leading institutions in China, marks a crucial advancement in the country’s quest for energy independence and carbon neutrality.

Shale reservoirs are integral to China’s energy landscape, and the adoption of CO2 fracturing not only enhances oil recovery but also facilitates substantial CO2 storage. The study, titled “Carbon Storage Potential of Shale Reservoirs Based on CO2 Fracturing Technology,” explores the intricate mechanisms of CO2 storage in shale formations, drawing on real data from the GYYP1 well in the Songliao Basin.

Through advanced numerical simulations, the researchers uncovered the key role of adsorption and diffusion in storing CO2 within shale reservoirs. Initial findings indicated a significant 22.13% of CO2 adsorption during fracturing, with diffusion further enhancing interaction with the shale rock, resulting in a remarkable 26.02% increase in CO2 adsorption for long-term storage.

The study’s findings demonstrate an impressive CO2 storage efficiency of 80.15% over a decade, with projections suggesting that future wells in Gulong shale oil reservoirs could store nearly two million tons of CO2 by 2030. This research not only enhances energy security but also aligns with China’s ambitious carbon goals.

By harnessing the natural storage capabilities of shale reservoirs, this study paves the way for a more sustainable energy future. The innovative use of CO2 fracturing technology sets a compelling precedent for future developments in carbon mitigation strategies, highlighting the importance of continued innovation in energy technologies for a greener tomorrow.