Transocean and Essar fight for ONGC rig contract Vol 14, PW 14 (13 Jan 11) Exploration & Production Transocean and Essar Oilfields are the two companies most likely to bid in an ONGC rig tender where, bizarrely, drillers are also being asked to provide wellheads.... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...