CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 2022

Concentrations, Significant Customers, Commitments And Contingencies Disclosure [Abstract]

Schedule of concentrations

At March 31, 2022 and 2021 and for each of the three months then ended, the Company’s revenues and receivables were comprised of the following customer concentrations:

	Three Months Ended March 31, 2022		Three Months Ended March 31, 2021
	% of Revenues	% of Receivables	% of Revenues	% of Receivables
Customer 1	22%	24%	23%	20%
Customer 2	19%	18%	15%	10%
Customer 3	12%	—%	12%	18%

For each of the three months ended March 31, 2022 and 2021, the Company’s segment revenues were comprised of the following customer concentrations:

	% of Revenue by Segment			% Revenue by Segment
	Three Months Ended March 31, 2022			Three Months Ended March 31, 2021
	Black Oil	Refining	Recovery	Black Oil	Refining	Recovery
Customer 1	—%	26%	—%	—%	30%	—%
Customer 2	—%	22%	—%	—%	20%	—%
Customer 3	—%	13%	—%	—%	15%	—%