New Gas Pseudocritical Property Equations Developed

New equations have been developed for calculating natural gas pseudocritical temperature and pressure over a wider range of gas specific gravities than previously published equations. Both pseudocritical temperature and pressure are required for many gas calculations. If the gas specific gravity is known, one can use correlations for estimating these parameters whenever field or laboratory measurements are unavailable. The new equations apply for gas with a specific gravity of 0.55--1.2.