Carbon Capture, Utilization and Storage (CCUS) in Tight Oil Reservoir

Abstract Low-carbon and green oil development has become the future strategy for numerous oil companies. It is crucial to implement this strategy proactively, focusing on optimizing the industrial and energy structures. The clean and efficient development and utilization of fossil energy represents the most practical approach for energy and chemical companies to achieve green and low-carbon development, while also addressing climate change. In recent years, many oil companies have been committed to a philosophy of ‘developing resources while protecting the environment, and protecting the environment while developing resources,’ with a strong emphasis on environmental preservation. They aim to enhance the quality and efficiency of their operations, fostering new competitive advantages in the realm of green and low-carbon development. As a pivotal industry in the national energy sector, it is imperative to optimize existing oil development technologies to achieve low-carbon and carbon-reducing growth. CO2 oil recovery technology mainly includes two aspects. Vertical wells adopt CO2 fracturing + huff and puff flooding integrated technology, and horizontal wells adopt water-based fracturing + CO2 flooding technology, which utilizes the efficient penetration of CO2 in the reservoir and the effect of crude oil viscosity reduction, can greatly increase the recovery rate, and at the same time realize large-scale CO2 storage and reduce carbon emissions, which is not only realistic and economical, but also has great social benefits. Carry out technical research on CO2 oil recovery technology, form the key technology of CO2 fracturing-flooding-storage, carry out research on test areas, form a complete integrated technology system, expand the scale application of integrated technology, and become a large-scale low-permeability tight oil reservoir. Develop the main technology for production. This technology can effectively solve the development problems in low-permeability tight oil reservoirs, and greatly improve the technical problems of tight oil reservoirs that are difficult to develop and rapid production decline. Through the integrated technology of CO2 capture, storage, and CO2 fracturing huff and puff, water Flat well CO2 huff and puff fracturing stimulation. After fracturing, CO2 realizes energy supplement and gas/oil replacement in the formation, and realizes CO2 storage and oil production stimulation.