ONGC plans deep ultra deep well in W. Bengal Vol 25, PW 11 (05 May 22) Exploration & Production Until now, Oil India's Sadiya-1 well in Assam has long been hyped as India's... Register here for subscription details Next Halliburton wants UBD 'Purchase Preference' Back IndianOil set for December drilling in Assam RelatedONGC plans deep ultra deep well in W. Bengal (05 May 22) ONGC sets new 19-year age limit in MSV tender (17 Jun 21) Oil India cancels 3000-hp Sadiya well rig tender (14 Jan 21) ONGC wants gas 'drying' units at Rajahmundry (05 Nov 20) ONGC defends decision to hire old diving vessels (30 Jul 20) Wanted: new jack-up for HP/HT wells (08 Mar 18) BP wants 2D seismic vessel for 2000-lkm Kutch shoot (06 Mar 08) Santos completes 30% of 17,200-lkm 2D shoot (07 Feb 08) Reliance switches focus to Kerala Konkan exploration (20 Oct 05) ONGC examines technology to cut deepwater costs (11 Feb 04)