Retirement at 15 for ONGCآ’s onland drilling rigs Vol 8, PW 6 (16 Jun 04) Exploration & Production ONGC is set to introduce a new policy governing the retirement (آ‘discardآ’) of its fleet of 75 onland drilling rigs located mainly in Assam, Gujarat and Andhra Pradesh. ... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...