Amounts in US$´000

Note

2021

2020

2019

REVENUE

​

7

​

688,543

​

393,692

​

628,907

Commodity risk management contracts (loss) gain

​

8

​

(109,191)

​

8,081

​

(22,523)

Production and operating costs

​

9

​

(212,790)

​

(125,072)

​

(168,964)

Geological and geophysical expenses

​

12

​

(7,891)

​

(14,951)

​

(18,593)

Administrative expenses

​

13

​

(46,828)

​

(50,315)

​

(60,818)

Selling expenses

​

14

​

(8,730)

​

(5,844)

​

(14,113)

Depreciation

​

​

​

(88,969)

​

(118,073)

​

(105,532)

Write-off of unsuccessful exploration efforts

​

20

​

(12,262)

​

(52,652)

​

(18,290)

Impairment loss for non-financial assets, net

​

20‑37

​

(4,334)

​

(133,864)

​

(7,559)

Other expenses

​

​

​

(11,739)

​

(11,665)

​

(1,840)

OPERATING PROFIT (LOSS)

​

​

​

185,809

​

(110,663)

​

210,675

Financial expenses

​

15

​

(64,112)

​

(64,582)

​

(41,070)

Financial income

​

15

​

1,652

​

3,166

​

2,360

Foreign exchange gain (loss)

​

15

​

5,049

​

(13,008)

​

(2,446)

PROFIT (LOSS) BEFORE INCOME TAX

​

​

​

128,398

​

(185,087)

​

169,519

Income tax expense

​

17

​

(67,271)

​

(47,863)

​

(111,762)

PROFIT (LOSS) FOR THE YEAR

​

​

​

61,127

​

(232,950)

​

57,757

Earnings (Losses) per share (in US$). Basic

​

19

​

1.00

​

(3.84)

​

0.96

Earnings (Losses) per share (in US$). Diluted

​

19

​

0.99

​

(3.84)

​

0.92