Evaluating Reservoir Risks and Their Influencing Factors during CO₂ Injection into Multilayered Reservoirs

Table 1

Parameters of the reservoir-caprock units of the Shenhua CCS project.

Reservoir number	Thickness of reservoir; (m)	Thickness of caprock (m)	Logging permeability; (×10^−3 μm^2)	Logging porosity; (%)	Fracturing pressure; (MPa)	Formation pressure; (MPa)
1	9	1699	2.81	10.6	35.29	17.45
2	5	57	5.47	12.4	37.53	17.89
3	40	191	1.431	9.7	38.95	20.15
4	8	43	6.58	12.9	42.60	21.43
5	4	119	5.99	12.6	47.00	22.94
6	26	114	2.738	12.5	43.47	23.1
7	8	52	5.1	11.9	46.03	23.84
8	12	178	0.039	5.2	45.68	22.75