主要的研究方法有经验公式法、物理模拟、数值模拟和现场实测。

The main research methods include empirical formula, physical simulation, numerical simulation and field measurement.

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传统的研究方法—模型试验法和经验公式法分别具有成本高、速度慢和适用范围小，数据不可靠等缺点。

The traditional research methods — model testing method and the empirical formula method, have the demerit of cost high, and speed slow, applicable range small and data unreliable.

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地层条件下气体的偏差系数是用来计算气藏储量的关键数据，通常使用图版法、经验公式法和实验法进行确定。

Gaseous Z-factor is key data that is used to calculate the reserves of gas reservoir, we can generally make certain Z-factor by Z-factor charts, experience methods and experimentation.

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