简答题 翻译：Their solubility is due to the elevated pressure and temperature existing underground.

问答题翻译：As is well known, gas mixtures do not follow the simple gas laws but deviate from them when placed under pressure.

问答题翻译：As pressure and diameters increased, it was found that compressibility of the gas that occurs when the gas is under pressure errors into the calculation, and the revised formula was eveloped to account for this property of natural gas.

问答题翻译：Crude petroleum is not an equilibrium mixture, and on a geological time scale its composition is slowly changing.

问答题翻译：The producing gas-oil R is the radio of the volumetric gas production rate to the volumetric oil production rate, both at surface.

问答题翻译：The gas saturation is obtained in the same manner as the retort.