An accurate empirical correlation for predicting natural gas compressibility factors

An accurate empirical correlation for predicting

natural gas compressibility factors

Ehsan Sanjari;Ebrahim Nemati Lay

【期刊名称】《天然气化学（英文版）》 【年(卷),期】2012(021)002

【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. 【总页数】5页(184-188) 【关键词】

【作者】Ehsan Sanjari;Ebrahim Nemati Lay

【作者单位】Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Ravand Street, Kashan, P. O. Box 87317-51167, Iran;Department of Chemical Engineering, Faculty of