Net profit of Oil & Natural Gas Corporation declined 4.83% to Rs 6741.41 crore in the quarter ended December 2011 as against Rs 7083.23 crore during the previous quarter ended December 2010. Sales declined 2.49% to Rs 18123.84 crore in the quarter ended December 2011 as against Rs 18586.41 crore during the previous quarter ended December 2010.
| Particulars | Quarter Ended |
| | Dec. 2011 | Dec. 2010 | % Var. |
| Sales | 18123.84 | 18586.41 | -2 |
| OPM % | 60.97 | 72.80 | -16 |
| PBDT | 12007.19 | 14195.39 | -15 |
| PBT | 7475.23 | 10554.41 | -29 |
| NP | 6741.41 | 7083.23 | -5 |