Inventories

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Inventories

Note F – Inventories

Inventories consisted of the following at December 31, 2021 and 2020:

	December 31,
(Thousands of dollars)	2021		2020
Unsold crude oil	$	15,497	16,399
Materials and supplies	38,701		49,677
Inventories	$	54,198	66,076