Baker Hughes has pointed to what it says is an error in the Exploration & Production section story of this fortnight's edition of 'After Heera success ONGC plans UBD roll-out.' In the story, which has since been corrected, we reported that Schlumberger is carrying out logging to speed up formation evaluation and zone identification.

Baker Hughes tells us, "all three UBD (Under Balanced Drilling) wells were drilled by Baker Hughes AutoTrak G 3.0 (Rotary Steerable System technology) and LithoTrak (Logging While Drilling) technology with special modifications to support UBD conditions." Complaints about inaccuracies in all sections of PETROWATCH, including online, should be addressed to or The Editor, Petrowatch, Ashoka Estate (11th Flr), 24 Barakhamba Road, Delhi 110 001