| Note 23 | Inventories |
| Amounts in US$ '000 | | 2017 | | 2016 | | ||
| Crude oil | | | 1,969 | | | 1,521 | |
| Materials and spares | | | 3,769 | | | 1,994 | |
| | | | 5,738 | | | 3,515 | |