Figure 10.
The diagram depicts three key stages in gas processes, gas entry, gas accumulation, and gas breakthrough. Each stage outlines interactions involving gas phases, liquid phases, and solid phases. The first section shows gas entry conditions where the pressure of gas is greater than or equal to entry pressure. The second section demonstrates gas accumulation where the pressure of gas during breakthrough is greater than gas pressure and entry pressure. The third section illustrates gas breakthrough when the pressure of gas equals breakthrough pressure. The visual presents different behaviours of gas, such as advection and diffusion in specific phases, with annotations indicating phases and interactions like liquid water containing dissolved air. Different shapes represent various processes, with oval shapes signifying diffusion and dispersion, and diamond shapes indicating advection of dissolved gas. The structure includes directional arrows showing movement and interaction dynamics at each stage.General gas flow mechanism and conditions for gas flow