After six years ONGC plans $180m CB-OS/1 drilling Vol 17, PW 14 (27 Feb 14) Exploration & Production After a six-year delay because of blocked environmental clearances ONGC hopes to begin preparing tenders from May for a $180m... Buy this article forRs590 $9 For a 30-article or annual subscription rates click here RelatedONGC applies for 28-well Golaghat clearance (29 Jun 23) Deepwater Drilling branches out from jack-ups (06 Nov 14) ONGC board to discuss expensive Ravva well (17 Jul 14) After six years ONGC plans $180m CB-OS/1 drilling (27 Feb 14) Oil India's $180m Algeria Petroceltic 'farm-in' (27 Jun 13) ONGC gets seven bids for BPA-BPB (21 Feb 13) Two new rigs for ONGC ahead of time (13 Dec 12) Cairn wants deepwater rig for new prospect at Ravva (19 Apr 07) Tapti will see $550m investment to raise production (15 Dec 04)