Section 3(k) in The Petroleum and Natural Gas Rules, 1959
(k)[ "Petroleum" means naturally occurring hydrocarbons, whether in the form of natural gas or in a liquid, viscous or solid form, or a mixture thereof, but does not include coal, lignite and helium occurring in association with petroleum or coal or shale;] [Substituted by Notification No. G.S.R. 671(E), dated 24.7.2018 (w.e.f. 1.4.2003).]
