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Provisions and other long-term liabilities
 12 Months Ended
Dec. 31, 2018
Disclosure Of Provisions and other long-term liabilities [Abstract]  
Disclosure of provisions [text block]
Note
28
Provisions and other long-term liabilities
 
Amounts in US$ ‘000
 
Asset retirement

obligation
 
 
Deferred

Income
 
 
Other
 
 
Total
 
At 1 January 2017
 
 
29,862
 
 
 
3,484
 
 
 
9,163
 
 
 
42,509
 
Addition to provision
 
 
5,943
 
 
 
-
 
 
 
2,220
 
 
 
8,163
 
Exchange difference
 
 
134
 
 
 
-
 
 
 
1,154
 
 
 
1,288
 
Foreign currency translation
 
 
(134
)
 
 
-
 
 
 
-
 
 
 
(134
)
Amortization
 
 
-
 
 
 
(657
)
 
 
-
 
 
 
(657
)
Unwinding of discount
 
 
2,607
 
 
 
-
 
 
 
172
 
 
 
2,779
 
Unused amounts reversed
 
 
-
 
 
 
-
 
 
 
(2,535
)
 
 
(2,535
)
Amounts used during the year
 
 
(337
)
 
 
(1,375
)
 
 
(3,417
)
 
 
(5,129
)
At 31 December 2017
 
 
38,075
 
 
 
1,452
 
 
 
6,757
 
 
 
46,284
 
Addition to provision
 
 
462
 
 
 
-
 
 
 
1,039
 
 
 
1,501
 
Recovery of abandonment costs
 
 
(4,817
)
 
 
-
 
 
 
(1,099
)
 
 
(5,916
)
Acquisitions
 
 
9,738
 
 
 
-
 
 
 
-
 
 
 
9,738
 
Exchange difference
 
 
1,823
 
 
 
-
 
 
 
(46
)
 
 
1,777
 
Foreign currency translation
 
 
(1,648
)
 
 
-
 
 
 
-
 
 
 
(1,648
)
Amortization
 
 
-
 
 
 
(1,005
)
 
 
-
 
 
 
(1,005
)
Unwinding of discount
 
 
3,250
 
 
 
-
 
 
 
173
 
 
 
3,423
 
Unused amounts reversed
 
 
-
 
 
 
-
 
 
 
(2,093
)
 
 
(2,093
)
Amounts used during the year
 
 
(750
)
 
 
-
 
 
 
(124
)
 
 
(874
)
Liabilities associated with assets held for sale
 
 
(5,816
)
 
 
-
 
 
 
(2,794
)
 
 
(8,610
)
At 31 December 2018
 
 
40,317
 
 
 
447
 
 
 
1,813
 
 
 
42,577
 
 
The provision for asset retirement obligation relates to the estimation of future disbursements related to the abandonment and decommissioning of oil and gas wells (see Note 4).
 
Deferred income relates to contributions received to improve the project economics of the gas wells in Chile. The amortization is in line with the related asset. The amount used in 2017 corresponds to the deferred income related to the take-or-pay provision associated to gas sales in Brazil.