ONGC
ONGC to acquire govt's 51.1 per cent stake in HPCL for Rs 36,915 crores
Helicopter carrying ONGC employees crashes miles off Mumbai coast, 4 killed
ONGC officers seek PM intervention to stall Oil Min's move to sell oil and gas fields
L&T Hydrocarbon Engineering clinches Rs 1,267-crore offshore contract from ONGC
RIL becomes world's third largest energy firm, behind Russian gas firm Gazrpom and German utility E.ON