Sharp drop in Ravva production to 30,000 b/d Vol 14, PW 23 (19 May 11) Exploration & Production 'Technical incompetence' is a strong statement but that's exactly the charge ONGC is levelling at Cairn India over its management of the depleting Ravva field.... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...