问答题 翻译：The production rate of free gas at reservoir conditions is therefore the product of the difference (R - Rs) times the surface production rate of oil times the gas formation volume factorBg.

问答题 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.