free gas clause
free-gas clause. Oil & gas. A provision in an oil-and-gas lease entitling the lessor or the surface owner to use gas produced from the leased property without charge. • Used commonly in colder states, free-gas clauses usu. limit how the gas may be used (e.g., domestic heating and light), how much gas may be used (e.g., not more than 300 MCF per year), or both.