A novel correlation approach for prediction of natural gas compressibility factor

作     者：Ehsan Heidaryan Amir Salarabadi Jamshid Moghadasi 

作者机构：Faculty of EnergyKermanshah University of TechnologyKermanshah ***Iran Ilam Gas Treating CompanyIlamIran Petroleum Engineering DepartmentPetroleum University of TechnologyAhwazIran 

出 版 物：《Journal of Natural Gas Chemistry》 (天然气化学杂志（英文版）)

年 卷 期：2010年第19卷第2期

页      面：189-192页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by Research Institute of Petroleum Industry-Kermanshah Campus 

主　　题：natural gas compressibility factor Standing and Katz chart correlation 

摘      要：Gas compressibility factor （z-Factor） is one of the most important parameters in upstream and downstream calculations of petroleum *** importance of z-Factor cannot be overemphasized in oil and gas engineering *** experimental measurements,Equations of State （EoS） and empirical correlations are the most common sources of z-Factor *** are more than twenty correlations available with two variables for calculating the z-Factor from fitting in an EoS or just through fitting ***,these correlations are too complex,which require initial value and more complicated and longer computations or have magnitude *** purpose of this study is to develop a new accurate correlation to rapidly estimate *** of this correlation is compared with large scale of database and experimental data *** correlation has 1.660 of Absolute Percent Relative Error （EABS） versus Standing and Katz chart and has also 3.221 of EABS versus experimental *** output of this correlation can be directly assumed or be used as an initial value of other implicit *** correlation is valid for gas coefficient of isothermal compressibility （cg） calculations also.