简答题 翻译：The solution gas-oil ratio Rs the volume of gas at surface conditions dissolved in that volume of reservoir oil which will shrink to a unit volume of oil surface conditions.

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

问答题翻译：Further out from the borehole, the displacement of the formation fluids by the mud filtrates is less and less complete, resulting in a transition from mud filtrate saturation to original formation water saturation. This zone is referred to as the transition or invaded zone.