Once liquids are brought to the surface, the oil, gas, and water must be separated for ease of measurement and transportation. A ''separator'' is a vessel used to separate liquid from gas. In some cases, the liquid may be additionally separated into individual oil and water streams. A separator is commonly given any of the following names: | Once liquids are brought to the surface, the oil, gas, and water must be separated for ease of measurement and transportation. A ''separator'' is a vessel used to separate liquid from gas. In some cases, the liquid may be additionally separated into individual oil and water streams. A separator is commonly given any of the following names: |