Note 7 | Revenue |
Amounts in US$ '000 | | 2017 | | 2016 | | 2015 | | |||
Sale of crude oil | | | 279,162 | | | 145,193 | | | 162,629 | |
Sale of gas | | | 50,960 | | | 47,477 | | | 47,061 | |
| | | 330,122 | | | 192,670 | | | 209,690 | |