Critical Judgments and Accounting Estimates (Tables)

12 Months Ended

Dec. 31, 2018

Corporate Information And Statement Of IFRS Compliance [Abstract]

Forward commodity price estimates

:

	Egypt1		Canada1
	Brent Blend Crude Oil		WTI Oil		AECO Gas		Edmonton Condensate		Edmonton Butane		Edmonton Propane		Spec Ethane		Exchange Rate
Year	$US/Bbl		$US/Bbl		$C/Mcf		$C/Bbl		$C/Bbl		$C/Bbl		$C/Bbl		USD/CAD
2019	63.25		56.25		1.85		67.67		21.45		25.33		5.69		0.750
2020	68.50		61.76		2.29		79.22		37.66		32.39		7.20		0.770
2021	71.25		64.40		2.67		83.54		47.85		36.68		8.51		0.790
2022	73.00		65.96		2.90		85.49		57.04		39.11		9.27		0.810
2023	75.50		66.98		3.14		87.80		58.48		41.77		10.12		0.820
2024	78.00		67.93		3.23		90.30		60.24		43.03		10.42		0.825
2025	80.50		68.82		3.34		93.33		62.36		44.55		10.78		0.825
2026	83.41		70.00		3.41		96.86		64.83		46.31		11.03		0.825
Thereafter2	2.0	%	2.0	%	2.0	%	2.0	%	2.0	%	2.0	%	2.0	%	0.825
1  GLJ Petroleum Consultants Ltd. (“GLJ”) price forecasts, effective December 31, 2018.
2  Percentage change represents the increase in each year after 2026 to the end of the reserve life.