Methane Hydrate Stability Toolbox

Determine equilibrium pressure or equilibrium temperature of methane hydrate.

These three functions estimate the stability conditions for methane (clathrate) hydrates. To estimate the equilibrium temperature in kelvin of a hydrate at a given pressure P_MPa in megapascals, simply type

T = methane_hyd_eq_temp(P_MPa)

into your command line or code. Likewise, to determine the equilibrium pressure at a given temperature T_K, type

P = methane_hyd_eq_press(T_K).

The third function in this toolbox is a qualitative reference. The function methane_hyd_stability(P_MPa,T_K) returns the text "hydrate is stable" or "hydrate is unstable".

Model taken from Peltzer & Brewer's 2000 work, Natural Gas Hydrate in Oceanic and Permafrost Environments. Peltzer and Brewer used Sloan's Experimental data to update Dickens and Quinby-Hunt's 1994 model.