Gas hydrate dissociation pressure

Input(s)

γh\gamma_{h}: Specific Gravity of Hydrate-forming Components (dimensionless)

FmF_{m}: Molar Ratio between the Non-hydrate-forming and Hydrate-forming Components (dimensionless)

T\mathrm{T}: Temperature (∘R)\left({ }^{\circ} \mathrm{R}\right)

Output(s)

ph\mathrm{p}_{\mathrm{h}}: Disassociation Pressure (psi)(\mathrm{psi})

Formula(s)

ph=0.1450377∗exp⁡{[2.50744∗10−3(γh+0.46852)3+Fm∗(1.214644∗10−2)+(−4.676111∗10−4)∗ Fm2+0.0720122]∗ T+3.6625∗10−4(γh+(−0.485054))3+Fm∗(−5.44376)+Fm2∗(3.89∗10−3)+(−29.9351)}\begin{aligned} \mathrm{p}_{\mathrm{h}}= & 0.1450377 * \exp \left\{\left[\frac{2.50744 * 10^{-3}}{\left(\gamma_{\mathrm{h}}+0.46852\right)^{3}}+F_{m} *\left(1.214644 * 10^{-2}\right)+\left(-4.676111 * 10^{-4}\right) * \mathrm{~F}_{\mathrm{m}}^{2}+0.0720122\right]\right. \\ & \left.* \mathrm{~T}+\frac{3.6625 * 10^{-4}}{\left(\gamma_{h}+(-0.485054)\right)^{3}}+\mathrm{F}_{\mathrm{m}} *(-5.44376)+F_{m}{ }^{2} *\left(3.89 * 10^{-3}\right)+(-29.9351)\right\} \end{aligned}

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 3, Page: 274.

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