收稿日期: 2006-08-14
修回日期: 2006-12-27
网络出版日期: 2008-06-20
APPLICABILITY ESTIMATION OF FOUR METHODS OF CALCULATING THE DEVIATION FACTOR OF NATURAL GAS
Received date: 2006-08-14
Revised date: 2006-12-27
Online published: 2008-06-20
阳建平,肖香姣,张峰,王海应 . 几种天然气偏差因子计算方法的适用性评价[J]. 天然气地球科学, 2007 , 18(1) : 154 -157 . DOI: 10.11764/j.issn.1672-1926.2007.01.154
The deviation factor of natural gas is a great significant parameter for the gasreservoir engineering calculation, which is mainly obtained by the Standing-Katz graphic solution or empirical formula calculation. The graphic solution is with great deviation when the parameters are manually read and is not convenient for computer application. The precision and applicability of the empirical formula calculation are difficult to confirm. To resolve the shortcomings mentioned above, firstly we digitize the Standing-Katz graph with digital software, then with the digital graph we analyze and evaluate the calculations' precision and application range of the 4 kinds of empirical formulas which are widely used for thepresent engineering calculation, finally the most accurate empirical formula isoptimized to offer the reference for our research staff.
Key words: Natural gas; Deviation factor; Computational method; Estimation.
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