ONGC starts Mahanadi drilling Vol 13, PW 2 (02 Jul 09) News in Brief Discoverer Seven Seas has begun appraisal drilling for ONGC at MN-OSN-2000/2 in the Mahanadi Basin offshore Orissa – one of ONGC’s most promising exploration blocks.... Buy this article forRs590 $9 For a 30-article or annual subscription rates click here RelatedCORRECTION (14 Nov 13) ONGC spuds Mahanadi well (27 Aug 09) ONGC starts Mahanadi drilling (02 Jul 09) Discoverer spuds another ONGC well (05 Apr 07) More dry holes in ONGC’s deepwater drilling effort (03 Nov 05) Discoverer Seven Seas stays in Krishna Godavari (06 Oct 05) Transocean launches inquiry into what went wrong (22 Sep 05) Sagar Vijay "health check" at Cochin Shipyard (24 May 00) Two new deepwater locations identified on east coast (12 Apr 00)