An accurate empirical correlation for predicting natural gas compressibility factors

被引：28

作者：

Sanjari, Ehsan ^{[1
]}

Lay, Ebrahim Nemati ^{[1
]}

机构：

[1] Univ Kashan, Fac Engn, Dept Chem Engn, Kashan, Iran

来源：

JOURNAL OF NATURAL GAS CHEMISTRY | 2012年 / 21卷 / 02期

关键词：

natural gas; compressibility factor; correlation; empirical model; equation of state; 3RD VIRIAL-COEFFICIENTS; METHANE PLUS NITROGEN; VOLUMETRIC PROPERTIES; CARBON-DIOXIDE; 99.93; MPA; VISCOSITY MEASUREMENTS; HYDROCARBON SYSTEMS; TEMPERATURES; 323.15; SINKER DENSIMETER; PHASE-EQUILIBRIA;

D O I：

10.1016/S1003-9953(11)60352-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The compressibility factor of natural gas is an important parameter in many gas and petroleum engineering calculations. This study presents a new empirical model for quick calculation of natural gas compressibility factors. The model was derived from 5844 experimental data of compressibility factors for a range of pseudo reduced pressures from 0.01 to 15 and pseudo reduced temperatures from 1 to 3. The accuracy of the new empirical correlation has been compared with commonly used existing methods. The comparison indicates the superiority of the new empirical model over the other methods used to calculate compressibility factor of natural gas with average absolute relative deviation percent (AARD%) of 0.6535.

引用

页码：184 / 188

页数：5

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