Including condensate and natural gas liquids (NGL), the overall liquids production stood at 1.409 million barrels of oil equivalents per day, lagging the NPD prediction by 8.5%.

Technical problems at some fields and maintenance were among the main reasons why production came in below forecast, NPD said.

Natural gas output in June rose 2.4% year-on-year to 313.3 million cubic metres per day, lagging NPD's forecasts by 4.7%, it added.