Table 5 Calculation results of the Barnett shale for the combination of gas adsorption and stress-dependence effects.
Pore Pressure (MPa) | Bulk Gas Density (kg/m3) | Adsorption Thickness (nm) | Volume of Adsorption (cm3) | Density of Adsorption (kg/m3) | Absolute Adsorption (mmol/g) | Porosity Multiplier | PV (cm3) | Effective PV (cm3) | Effective Porosity Multiplier |
|---|---|---|---|---|---|---|---|---|---|
5.08 | 29.0056 | 0.2983 | 1.6601 | 194.6423 | 0.1009 | 0.9908 | 10.2005 | 8.5405 | 0.8295 |
6.05 | 34.8257 | 0.3051 | 1.6979 | 208.4213 | 0.1105 | 0.9923 | 10.2159 | 8.5180 | 0.8274 |
7.05 | 40.8921 | 0.3113 | 1.7324 | 220.6441 | 0.1193 | 0.9938 | 10.2319 | 8.4995 | 0.8256 |
8.07 | 47.1345 | 0.3169 | 1.7636 | 231.4975 | 0.1275 | 0.9954 | 10.2480 | 8.4845 | 0.8241 |
9.05 | 53.1693 | 0.3217 | 1.7903 | 240.6712 | 0.1345 | 0.9969 | 10.2636 | 8.4733 | 0.8230 |
10.04 | 59.2879 | 0.3260 | 1.8142 | 248.9187 | 0.1410 | 0.9985 | 10.2794 | 8.4652 | 0.8222 |
11.04 | 65.4758 | 0.3298 | 1.8354 | 256.3856 | 0.1469 | 1.0000 | 10.2953 | 8.4600 | 0.8217 |
