casinghead gasglossary / CASINGHEAD GAS casinghead gas. Oil & gas. Natural gas in a liquid solution with crude oil, produced at the casinghead (top) of an oil well. • Casinghead gas separates from the oil at the time of production or shortly afterward. 词条贡献者 法律翻译Jenna,欧洲顶尖商学院国际经济法专业,专注翻译各类与投资基金和私募股权有关的法律文件。