prediction of natural gas hydrates dissociation enthalpies from phase equilibrium data

Since the detection and evaluation of a hydrate reservoir is directly from seismic velocities, at early stage it is vital to obtain required data for plan of production# as obtaining the enthalpy of dissociation data by direct measurements has difficulties, jarrahian–heidaryan equation of state (j–h-eos) as well as clausius–clapeyron equation were used to estimate the enthalpies of dissociation for natural gas hydrate through equilibrium data# the results of the calculated enthalpy of dissociation for hydrate of experiments in this study and those from literature are presented and discussed# parameters of clausius–clapeyron equation are generalized to natural gas specific gravity and quantity of non-hydrocarbons# depending on the concentration of impurities in the systems, the enthalpy of dissociation of mixture is different which is discussed comprehensively#