Research Progress of CO2 Sequestration with Enhanced Gas-Recovery

CO2 Sequestration with Enhanced Gas Recovery (CSEGR) Is one of the efficient and attractive scenarios to reduce CO2 emission and accelerate gas field to produce more natural gas simultaneously. We review the correlational experiments, simulations and economic feasibility research about technical and economic problems of CSEGR. And the potential of natural gas increase production and CO2 emission reduction in China by CSEGR is calculated. The pilot projects and simulation results show that CSEGR is, technically feasible when suitable injection strategies and field management are implemented. However, economic feasibility is available only via policies of carbon credit, allowance and trade. Accurate experimental data would ensure the authenticity of key simulation parameters and reliability of simulations, but the existed experimental data is scarce. More experimental researches should be conducted to obtain a great quantity of accurate data which can make the simulation more close to the actual situation. Accordingly, the pilot projects and large-scale applications of CSEGR could be implemented successfully.