Gas solubility in coalbed methane reservoirs
Input(s)
\(\rho_{\mathrm{B}}\): Bulk Coal Steam Density \((\mathrm{g} / \mathrm{cc})\)
\(\varnothing_{\mathrm{m}}\): Actual Coalbed Cleat Porosity (fraction)
\(\mathrm{S}_{\mathrm{om}}\): Initial Oil Saturation (fraction)
V: Gas Content (SCF/STB)
Output(s)
\(\mathrm{R}_{\mathrm{s}}\): Equivalent Gas Solubility (dimensionless)
Formula(s)
\[
\mathrm{R}_{\mathrm{s}}=\left(\frac{0.17525 * \rho_{\mathrm{B}}}{\emptyset_{\mathrm{m}} * \mathrm{~S}_{\mathrm{om}}}\right) * \mathrm{~V}
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 3, Page: 222 .