Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Summary of Significant Accounting Policies

Schedule of investment in property and equipment

Our investment in property and equipment was as follows as of December 31, 2016 and September 30, 2017 (in thousands):

	Estimated useful lives	December 31, 2016		September 30, 2017
Land	n/a	$	11,338		14,850
Fresh water surface pipelines and equipment	5 years		39,562		46,183
Above ground storage tanks	10 years		4,301		4,301
Fresh water permanent buried pipelines and equipment	20 years		443,453		472,012
Gathering systems and facilities	20 years		1,551,771		1,774,221
Construction-in-progress	n/a		400,096		539,883
Total property and equipment			2,450,521		2,851,450
Less accumulated depreciation			(254,642)		(343,246)
Property and equipment, net		$	2,195,879		2,508,204