Preliminary Numerical Modeling of CO₂ Geological Storage in the Huangcaoxia Gas Reservoir in the Eastern Sichuan Basin, China

Table 1

Site characteristics of CO₂ storage in gas fields in the eastern Sichuan Basin.

Gas field	Dachigan	Wolonghe	Huangcaoxia	Shiyougou
CO2 storage capacity (Mt)	65.55	51.7	22.9	7.39
Degree of exploitation	43% and 13 depleted wells	60% and 21 depleted wells	90% and 11 depleted wells	77% and 4 depleted wells
Number of CO2 emission sources within 50 km	10	14	11	11
Total amount of CO2 emission within 50 km (Mt/a)	14.26	24.04	22.81	17.50
Type^a of CO2 emission within 50 km	1, 2, 3	1, 2, 3, 4	1, 2, 3, 4	1, 3
Site screening	—	Option	Best	—

^a1: cement plant; 2: chemical plant; 3: thermal power plant; 4: steel plant.