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Modeling natural gas compressibility factor using a hybrid group method of data handling

机译:使用混合组数据处理方法建模天然气压缩因子

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The natural gas compressibility factor indicates the compression and expansion characteristics of natural gas under different conditions. In this study, a simple second-order polynomial method based on the group method of data handling (GMDH) is presented to determine this critical parameter for different natural gases at different conditions, using corresponding state principles. The accuracy of the proposed method is evaluated through graphical and statistical analyses. The method shows promising results considering the accurate estimation of natural gas compressibility. The evaluation reports 2.88% of average absolute relative error, a regression coefficient of 0.92, and a root means square error of 0.03. Furthermore, the equations of state (EOSs) and correlations are used for comparative analysis of the performance. The precision of the results demonstrates the model’s superiority over all other correlations and EOSs. The proposed model can be used in simulators to estimate natural gas compressibility accurately with a simple mathematical equation. This model outperforms all previously published correlations and EOSs in terms of accuracy and simplicity.
机译:天然气压缩性因子表示在不同条件下的天然气的压缩和膨胀特性。在该研究中,提出了一种基于数据处理(GMDH)的组方法的简单二阶多项式方法,以确定使用相应的状态原理在不同条件下针对不同条件的不同天然气体的关键参数。通过图形和统计分析评估所提出的方法的准确性。考虑到对天然气压缩性的准确估计,该方法显示了有希望的结果。评估报告的平均绝对相对误差的2.88%,回归系数为0.92,根本误差为0.03。此外,状态(eoss)和相关性的方程用于对性能的比较分析。结果的精度展示了模型对所有其他相关性和eoss的优势。拟议的模型可用于模拟器,以简单的数学方程式准确地估计天然气压缩性。在准确性和简单方面,该模型优于所有先前发表的相关性和eoss。

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