Numerical Simulation and Modeling on CO₂ Sequestration Coupled with Enhanced Gas Recovery in Shale Gas Reservoirs

Table 3

Simulation results of scheme 2.1, scheme 2.2, and scheme 2.3.

Permeability multiples	Cumulative gas production (10^6 m^3)	Total gas injection (10^6 m^3)	CH4 production (10^6 m^3)	CO2 production (10^6 m^3)	CO2 sequestration ratio (%)
10	9.58	2.07	9.33	0.25	87.9
100	9.71	2.07	9.42	0.29	86.0
1,000	10.25	2.07	9.75	0.50	75.8