Figure 11.
The panel a plot gives peak gas pressure in kilopascal against elapsed time in days, with a second axis for radial stress in kilopascal. F U 910 increases from about 5200 kilopascal at 2500 days to 5350 kilopascal at 5200 days. F L 903 increases from about 5650 kilopascal at 1000 days to 6450 kilopascal at 5200 days. P R average increases from about 5650 kilopascal to 6200 kilopascal. Panel b gives peak gas pressure in kilopascal against hydraulic conductivity in metres per second. F L 903 decreases from about 6450 kilopascal at 2 times 10 to negative 13 metres per second to about 5670 kilopascal at 1.35 times 10 to negative 12 metres per second. F U 910 decreases from about 5350 kilopascal to 5190 kilopascal.Gas peak pressure evolution for six gas injection tests in Lasgit: (a) evolution with time. The grey regions show when the system was not artificially hydrated; (b) the relationship between gas peak pressure and hydraulic conductivity