Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

	As at December 31,
(Thousands of U.S. Dollars)	2019			2018
Oil and natural gas properties
Proved	$	3,850,565		$	3,226,811
Unproved	310,809			456,598
	4,161,374			3,683,409
Other(1)	26,287			19,549
	4,187,661			3,702,958
Accumulated depletion and depreciation	(2,610,268		)	(2,390,181		)
	$	1,577,393		$	1,312,777

⁽¹⁾ Included in other is right-of-use assets for operating and finance leases which totaled $5.7 million as at December 31, 2019 (December 31, 2018 - nil).

Schedule of Asset Impairment

Asset impairment for the three years ended December 31, 2019, was as follows:

(Thousands of U.S. Dollars)	Year Ended December 31,
	2019		2018		2017
Impairment of oil and gas properties	$	—	$	—	$	1,514

Schedule of Asset Acquisition

(Thousands of U.S. Dollars)
Cost of asset acquisition:
Cash	$	79,100
Promissory note	1,500
	$	80,600
Allocation of Consideration Paid:
Oil and gas properties
Proved	$	52,530
Unproved	44,768
	97,298
Net working capital (including cash acquired of $5.3 million)	(16,698		)
	$	80,600

Summary of Oil and Natural Gas Properties

The following is a summary of Gran Tierra’s oil and natural gas properties not subject to depletion as at December 31, 2019:

	Costs Incurred in
(Thousands of U.S. Dollars)	2019		2018		2017		Prior to 2017		Total
Acquisition costs - Colombia	$	21,773	$	14,115	$	10,700	$	135,202	$	181,790
Exploration costs - Colombia	56,454		34,349		12,209		22,799		125,811
Exploration costs - Ecuador	3,208		—		—		—		3,208
	$	81,435	$	48,464	$	22,909	$	158,001	$	310,809