CONCENTRATIONS (Tables)

12 Months Ended

Dec. 31, 2016

Risks and Uncertainties [Abstract]

Customers from Whom We Derived 10% or More of Total Oil and Gas Revenue

The following table identifies customers from whom we derived 10% or more of our total oil and natural gas revenue during the indicated periods:

	Year Ended December 31,
	2016		2015		2014
Phillips 66 Company	68	%	53	%	31	%
Shell Trading (US) Company	10	%	13	%	32	%