Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contracts with Customers [Abstract]

Disaggregation of Revenue

		Three Months Ended
		March 31,
(Thousands of dollars)		2018	2017
Net crude oil and condensate revenue
United States – Onshore	$	182,649	149,986
– Offshore		71,528	53,813
Canada    – Onshore		21,293	9,121
– Offshore		54,315	37,014
Malaysia – Sarawak		77,306	65,783
– Block K		94,572	87,831
Total crude oil and condensate revenue		501,663	403,548
Net natural gas liquids revenue
United States – Onshore		12,134	9,647
– Offshore		1,639	1,916
Canada    – Onshore		3,469	432
– Offshore		–	–
Malaysia – Sarawak		6,192	5,182
– Block K		–	–
Total natural gas liquids revenue		23,434	17,177
Net natural gas revenue
United States – Onshore		6,770	7,036
– Offshore		2,937	2,663
Canada    – Onshore		39,594	39,847
– Offshore		–	–
Malaysia – Sarawak		32,383	38,589
– Block K		173	175
Total natural gas revenue		81,857	88,310
Total revenue from contracts with customers		606,954	509,035
Gain (loss) on crude contracts		(29,502)	37,077
Other operating income (loss)		8,492	(1,454)
Gain (loss) on sale of assets		(339)	131,982
Total revenue	$	585,605	676,640

Current and Long-Term Contracts Outstanding

Current Long-Term Contracts Outstanding at March 31, 2018
Location	Commodity	End Date	Description	Approximate Net Volumes
U.S. Onshore	Oil	Q2 2019	Fixed quantity delivery in Eagle Ford	4,000 BOE/Day
U.S. Onshore	Oil	Q3 2019	Fixed quantity delivery in Eagle Ford	2,000 BOE/Day
U.S. Onshore	Oil	Q4 2021	Fixed quantity delivery in Eagle Ford	2018: 19,000 BOE/Day 2019-2021: 13,000 BOE/Day
U.S. Onshore	Gas and NGL	Q2 2026	Deliveries from dedicated acreage in    Eagle Ford	As produced
Canada Onshore	Gas	Q4 2020	Contracts to sell natural gas   at Alberta AECO Cdn dollar 2.81/MCF	59 MMCF/Day
Canada Onshore	Gas	Q4 2020	Contracts to sell natural gas at USD Index   pricing	59 MMCF/Day