ONGC spuds Mahanadi well Vol 13, PW 6 (27 Aug 09) News in Brief ONGC has begun exploring its 15,465-sq km NELP-IV deepwater block NEC-DWN-2002/2 in the Mahanadi Basin, where it holds 100%.... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...