Gas Hydrate Equilibrium Temperature Calculator

Subsea Flow Assurance: Calculate hydrate dissociation temperature ($T_{hyd}$), chemical inhibition suppression ($\Delta T_{dep}$), and subcooling risk margins.

Pipeline Operating Conditions

Operating Pressure $P$ (psia):

Operating Fluid Temp $T_{op}$ (°F):

Gas Specific Gravity $\gamma_g$ (Air = 1.0):

Thermodynamic Chemical Inhibitor

Inhibitor Species:

Inhibitor Conc $W$ (wt% in water):

Hydrate Dissociation & Safety Margins

Inhibited Hydrate Temp ($T_{hyd}$)

-- °F

Uninhibited: -- °F

Subcooling Margin ($\Delta T_{sub}$)

-- °F

Target: Margin > 5°F safe

Temperature Suppression ($\Delta T_{dep}$)

-- °F

Hammerschmidt correlation

Required Inhibitor wt%

-- wt%

For 5°F safety margin

Flow Assurance Criteria:

• If $T_{op} < T_{hyd}$, water and gas spontaneously nucleate into solid ice-like gas hydrates, plugging flowlines.

• Hammerschmidt: $\Delta T_{dep} = \frac{K_H \cdot W}{M_I (100 - W)}$. Methanol ($M=32$) provides greater suppression per mass than MEG ($M=62$).

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Gas Hydrate Equilibrium Temperature Calculator

Pipeline Operating Conditions

Thermodynamic Chemical Inhibitor

Hydrate Dissociation & Safety Margins

Frequently Asked Questions