ONGC plans April exploration well at MN-OSN-97/3 Vol 8, PW 25 (23 Mar 05) News in Brief ONGC will drill one exploratory well next month at NELP-I block MN-OSN-97/3 in the Mahanadi offshore.... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...