Discoverer at ONGC Vol 15, PW 3 (11 Aug 11) News in Brief ONGC has re-hired Transocean deepwater drillship Discoverer Seven Seas for six months, as predicted by this report.... Buy this article forRs590 $9 For a 30-article or annual subscription rates click here RelatedDiscoverer at ONGC (11 Aug 11) ONGC starts Mahanadi drilling (02 Jul 09) Discoverer at second ONGC well (30 Oct 08) Reliance hires Seven Seas for 60 days (10 Jan 08) Another gas discovery for ONGC at former Cairn block (27 Jul 06) Discoverer moves to new Cauvery offshore location (09 Feb 06) More trouble with Discoverer Seven Seas for ONGC (12 Jan 06) Discoverer and Belford Dolphin running out of luck (28 Jul 05) No luck for ONGC as Vashishta-3 turns up a dry hole (16 Jun 05)