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Calculation methods to evaluate physical and thermodynamical properties of natural gas. Method of disintegrating incomplete component composition of natural gas into equivalent component composition
Technical sciences

Authors: Alexandr A. ALEKSANOCHKIN graduated from Bauman Moscow State Technical University in 1998. He is Deputy Head of Dispatch Service of Gazprom Transgaz Moscow. E-mail: alexanochkin@gtm.gazprom.ru
Sergey A. SARDANASHVILI graduated from Moscow Institute of Petrochemical and Gas Industry in 1976. He is Doctor of Technical Sciences, Associate Professor, Head of Department of Design and Operation of Gas and Oil Pipelines of Gubkin Russian State University of Oil and Gas (National Research University). Specialists in the field of computer dispatcher decision-support systems for oil and gas industry. Author of more than 50 scientific papers. E-mail: sardanashvili.s@gubkin.ru

Abstract: The task of adequate evaluation of physical and thermodynamical properties of natural gas in presence of native data on incomplete component composition (in the absence of data on component composition) is solved. Possible solutions are formulated. The investigation of experimental data on component composition of natural gas to identify specific balance of higher hydrocarbons is given. A new calculation method of disintegrating incomplete component composition of natural gas to equivalent component composition for the purpose of further use of calculation methods in existence of evaluation of physical and thermodynamical properties of natural gas on the basis of information about the component composition in computer models, computation of regimes and technological tasks of pipeline gas transport is suggested

Index UDK: 662.76

Keywords: natural gas, methods of determination of physical and thermodynamic properties, characteristic ratios of highest hydrocarbons, equivalent hydrocarbon, equivalent component composition

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