Recent advancements in reservoir engineering, particularly through CO2 flooding techniques, are stirring excitement in the energy sector, presenting a dual opportunity for carbon emission reduction and enhanced oil recovery. This emerging technology is gaining traction as industries strive to meet ambitious climate goals, such as China’s commitment to peak carbon emissions before 2030 and achieve carbon neutrality by 2060.
The research led by Zhang Chuanbao, as detailed in the article published in ‘Youqi dizhi yu caishoulu’ (translated as ‘Journal of Oil and Gas Resources’), delves into the practical applications and optimization of CO2 flooding in sandstone reservoirs. The study highlights the challenges faced in field operations at SINOPEC Shengli Oilfield and CNPC Jilin Oilfield, where issues like low impact and rapid increases in gas-oil ratios have surfaced. “There’s a clear need to refine our approach to reservoir engineering,” Zhang notes, emphasizing the importance of adapting technology to meet the complexities of real-world conditions.
The article systematically examines various elements crucial to optimizing CO2 flooding, such as matching reservoir pressure maintenance levels with miscible pressure, aligning well patterns with formation stress directions, and determining the appropriate well spacing based on reservoir permeability. These factors are vital in ensuring that CO2 flooding not only enhances oil recovery but also integrates seamlessly with carbon capture and storage (CCUS) initiatives.
One of the standout findings from the research is the focus on high-pressure miscible flooding, which could potentially revolutionize how we approach oil extraction in the future. By analyzing the interplay between crude oil, CO2, and water in porous media, the study aims to unlock new pathways for maximizing oil yield while simultaneously addressing environmental concerns. “Understanding the phase and flow laws under high-pressure conditions is key to our success,” Zhang asserts, underlining the intricate balance between energy production and sustainability.
As the energy sector continues to pivot towards greener practices, the implications of this research are profound. It not only provides a roadmap for enhancing oil recovery but also aligns with global efforts to mitigate climate change. By leveraging CO2 flooding, companies can potentially increase production while contributing to a lower carbon footprint, making it a commercially viable strategy in an increasingly eco-conscious market.
In summary, Zhang Chuanbao’s research offers a comprehensive overview of the current state and future prospects of CO2 flooding in reservoir engineering, paving the way for innovations that could reshape the fossil energy landscape. The insights gleaned from this study are set to support large-scale CO2 flooding initiatives in China and beyond, marking a significant step forward in the quest for sustainable energy solutions. For more information on Zhang’s work, you can visit lead_author_affiliation.
