油藏物理学一天然气的高压物桂 Where Z-deviation factor Physical meaning---deviation factor is the volume of real gas over the volume of ideal gas in real pressure and temperature. This factor accounts for the difference between the actual and ideal gas volumes油藏物理学——天然气的高压物性 Where Z — deviation factor Physical meaning---deviation factor is the volume of real gas over the volume of ideal gas in real pressure and temperature. This factor accounts for the difference between the actual and ideal gas volumes