6Meaning of *petroleum*

6 Meaning of *petroleum* (1) Petroleum is— (a) any naturally occurring hydrocarbon (whether in a gaseous, liquid or solid state); or (b) any naturally occurring mixture of hydrocarbons (whether in a gaseous, liquid or solid state); or (c) any naturally occurring mixture of one or more hydrocarbons (whether in a gaseous, liquid or solid state), and one or more of the following: hydrogen sulphide, nitrogen, helium or carbon dioxide. (2) For the purposes of this Act— (a) petroleum includes any petroleum as defined by subsection (1)(a), (b) or (c), and any petroleum product specified by the regulations for the purposes of this section, that has been returned to a reservoir in Victoria; but (b) petroleum does not include any naturally occurring hydrocarbon, or mixture of hydrocarbons, within a deposit of coal or oil shale.