Fig. 5.
The content presents liquid saturation S l in a three-layer numerical domain with an upper layer, caprock, and reservoir. Panel a shows the saturation field at t sat equal to 12 hours with boundary pressures labelled 0.1 megapascals at the top, 1 megapascal at mid height, and 3 megapascals at the base. Panel b shows the saturation field at t sat equal to 96 hours under the same boundary conditions, with a sharp saturation front at the caprock reservoir interface. A scale indicates liquid saturation from 0 to 1. Panel c shows liquid saturation S l versus time in days from 0 to 90 for the reservoir, caprock, and upper layer, with each curve increasing from near 0 to 1 at different rates.Water saturation of the metre-scale testbed caprock/reservoir/upper layer system: (a) liquid saturation after 12 h of water injection; (b) liquid saturation after 96 h (3 days) of water injection; (c) liquid saturation with time at the top of each layer (dots in Figs. 5(a) and 5(b))