Fluids and Rocks - Introduction to Carbon Capture and Sequestration - page 430

Figure 9.7.5 Core-scale data on residual CO 2 trapping
Core-scale data on residual CO 2 trapping in four sandstones (Berea, Paaratte, Mount
Simon, Tuscaloosa) at 50°C and 9 MPa.
(a) X-ray CT reconstruction of CO 2 saturation in a sample of Paaratte sandstone when
the inlet fl uid mixture is 90% CO 2 (fl ow is from left to right; gravity from top to bottom).
(b) Relative permeability curves measured during CO 2 invasion in the Paaratte
sandstone.
(c) Residual CO 2 saturation in the four sandstones, plotted against the maximum histori-
cal CO 2 saturation. The data are fi tted with two different mathematical models of the
relationship between S g,r and S g,i . Images reproduced from Krevor et al. [9.25], with
permission from John Wiley and Sons .