Gas Reserves

9 Months Ended

Sep. 30, 2020

Gas Reserves [Abstract]

Gas Reserves

The following table outlines NW Natural's net gas reserves investment:

	September 30,				December 31,
In thousands	2020		2019		2019
Gas reserves, current	$	12,265	$	16,392	$	15,278
Gas reserves, non-current	175,042		170,915		172,029
Less: Accumulated amortization	137,346		118,937		123,635
Total gas reserves(1)	49,961		68,370		63,672
Less: Deferred taxes on gas reserves	11,972		13,293		15,515
Net investment in gas reserves	$	37,989	$	55,077	$	48,157

(1)     The net investment in additional wells included in total gas reserves was $3.2 million, $4.0 million and $3.8 million at September 30, 2020 and 2019 and December 31, 2019, respectively.