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Compressibility factor of sour natural gases
Author(s) -
Wichert Edward,
Aziz Khalid
Publication year - 1971
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450490216
Subject(s) - compressibility factor , compressibility , range (aeronautics) , equation of state , natural gas , thermodynamics , computer science , petroleum engineering , engineering , physics , waste management , aerospace engineering
This paper presents a comparison of twelve selected methods for the prediction of the compressibility factor of natural gases containing H 2 S and CO 2 . The methods are compared with experimental data from the published literature and with previously unpublished data made available by oil and gas companies operating in Alberta. The method of Robinson, Macrygeorgos and Govier, and the method of Robinson and Jacoby are found to be most accurate over the range tested here. A brief desription of the twelve methods considered is also presented. Three new methods are also proposed. Two of the proposed methods are modifications of the Pitzer method and the Redlich‐Kwong equation of state. These methods are suitable for digital computer applications. The third method proposed here is developed for hand calculations. The new methods presented here are superior to the twelve methods tested in this study.