Table 3: Replacement ratio after CO2 injection under 8.0 MPa.

Sample

Replacement ratio, %

A i-a

43.1

A i-b

19.4 (0.5 PV)/19.8 (1.0 PV)

A i-c

16.3 (0.3 PV)/15.3 (0.5 PV)/29.3 (1.0 PV)