Modeling the phase partitioning behavior of gas tracers under geothermal reservoir conditions

摘要

A model of the liquid-vapor phase partitioning behavior of low concentrations of gas tra- cers in water at geothermal temperatures and pressures is presented. This model uses Henry's coefficient to describe the variation of the gas tracer solubility with temperature and pressure. A new method is described for the determination and representation of Henry's coefficients. The method uses experimentally determined values of Henry's coefficient and a theoretically Predicted value of behavior at the critical point of water to provide data that can be fitted by a Semi-empirical correlation.