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.

问答题 翻译：Measuring (gauging) and testing crude oil in the field is not a typical repetitive operation.