Financial Tribune - Iran's heavy crude oil gained $1.45 or 2.6% per barrel in January compared to December when it was traded at $54.84 per barrel.

Iran Heavy, one of the country's main grades for export, settled at $56.29 last month, ISNA quoted a report by OPEC as saying on Wednesday.

According to OPEC's latest monthly report published on February 12, Iran Heavy on average has declined by $9 per barrel in 2019 compared to last year's average of $65 a barrel.