Inventories

12 Months Ended

Dec. 31, 2017

Inventories [Abstract]

Inventories

Note D – Inventories

Inventories consisted of the following at December 31, 2017 and 2016.

	December 31,
	2017		2016
(Thousands of dollars)
Unsold crude oil	$	20,153	17,146
Materials and supplies		84,974	109,925
	$	105,127	127,071