A licence, while it remains in force, authorizes the licensee, subject to this Act and in accordance with the conditions to which the licence is subject –

(a) to recover petroleum in the licence area and to recover from the licence area petroleum in another area to which he has lawful access for that purpose; and

(b) to explore for petroleum in the licence area; and

(c) to carry on such operations and execute such works in the licence area as are necessary for those purposes.