Predictive models for density correction factor of natural gas and comparison with standard methods | Oil & Gas Science and Technology

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Table 4

Performance investigation of different models to predict C by comparing with experimental data from this work and Refs. [36–39].

Models	T (°K)	P (MPa)	n
NGDC-ANN	143–474	<140	871	0.989	396.25	1.999
NX-19	233–389	<34	405	0.923	234.91	2.006
AGA8-GCM	265–335	<12	416	0.999	0.026	0.045
AGA8-GCMD	225–390	<70	756	0.980	365.85	4.574

n indicates the number of used experimental data for validity investigation of models. Y _i, , and are the experimental data, modeling data and average of experimental data of C, respectively.

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