Abstract
With the rapid development of global economy, an increasing amount of attention has been paid to the emission of greenhouse gases, especially CO . In recent years, dominated by the governments around the world, several significant projects of CO sequestration have been conducted. However, due to the huge investment and poor economic effects, the sustainability of those projects is not satisfactory. Supercritical CO (SC-CO ) has prominent advantages in well drilling, fracturing, displacement, storage, plug and scale removal within tubing and casing, which could bring considerable economic benefits along with CO sequestration. In this paper, based on physicochemical properties of SC-CO fluid, a detailed analysis of technical advantages of SC-CO applied in oil and gas development is illustrated. Furthermore, the implementation processes of SC-CO are also proposed. For the first time, a recycling process is presented in which oil and gas are extracted and the CO generated could be restored underground, thus an integrated technology system is formed. Considering the recent interests in the development of enhancing hydrocarbon recoveries and CO sequestration, this approach provides a promising technique that can achieve these two goals simultaneously.
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