REVENUES (Tables)

9 Months Ended

Sep. 30, 2018

REVENUES

Schedule of disaggregation of revenues

	Three months ended				Nine months ended
	September 30,				September 30,
(in thousands)	2018		2017		2018		2017
Oilfield services transferred at a point in time	$	-	$	-	$	-	$	-
Oilfield services transferred over time		439,994		470,999		1,344,254		1,167,928
Total revenues	$	439,994	$	470,999	$	1,344,254	$	1,167,928

Schedule of contract assets included in accounts receivable

(in thousands)	September 30, 2018		December 31, 2017		September 30, 2017		December 31, 2016
Unbilled trade receivables	$	102,760	$	68,494	$	107,943	$	39,223