JOINT FILING AGREEMENT

EXHIBIT 1

JOINT FILING AGREEMENT

Pursuant to Rule 13(d)-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned acknowledges and agrees that the foregoing statement on Schedule 13D is filed on behalf of the undersigned and that all subsequent amendments to this statement on Schedule 13D (including this Amendment No. 2) shall be filed on behalf of the undersigned without the necessity of filing additional joint acquisition statements. Each of the undersigned acknowledges that it shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Dated as of December 5, 2017.

				OCM GW HOLDINGS, LLC
				By:		OCM Principal Opportunities Fund III, L.P.
				Its:		Managing Member
				By:		OCM Principal Opportunities Fund III GP, L.P.
				Its:		General Partner
				By:		Oaktree Fund GP I, L.P.
				Its:		General Partner
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Authorized Signatory
				OCM PRINCIPAL OPPORTUNITIES FUND III, L.P.
				By:		OCM Principal Opportunities Fund III GP, L.P.
				Its:		General Partner
				By:		Oaktree Fund GP I, L.P.
				Its:		General Partner
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Authorized Signatory
				OCM PRINCIPAL OPPORTUNITIES FUND III GP, L.P.
				By:		Oaktree Fund GP I, L.P.
				Its:		General Partner
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Authorized Signatory
				OAKTREE FUND GP I, L.P.
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Authorized Signatory

				OAKTREE CAPITAL I, L.P.
				By:		OCM Holdings I, LLC
				Its:		General Partner
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM HOLDINGS I, LLC
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OAKTREE HOLDINGS, LLC
				By:		Oaktree Capital Group, LLC
				Its:		Managing Member
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OAKTREE CAPITAL GROUP, LLC
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OAKTREE CAPITAL GROUP HOLDINGS GP, LLC
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM CRIMSON HOLDINGS, LLC
				By:		OCM Principal Opportunities Fund IV, L.P.
				Its:		Managing Member
				By:		OCM Principal Opportunities Fund IV GP, L.P.
				Its:		General Partner
				By:		OCM Principal Opportunities Fund IV GP Ltd.
				Its:		General Partner
				By:		Oaktree Capital Management, L.P.
				Its:		Director
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM PRINCIPAL OPPORTUNITIES FUND IV, L.P.
				By:		OCM Principal Opportunities Fund IV GP, L.P.
				Its:		General Partner

				By:		OCM Principal Opportunities Fund IV GP Ltd.
				Its:		General Partner
				By:		Oaktree Capital Management, L.P.
				Its:		Director
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM PRINCIPAL OPPORTUNITIES FUND IV GP, L.P.
				By:		OCM Principal Opportunities Fund IV GP Ltd.
				Its:		General Partner
				By:		Oaktree Capital Management, L.P.
				Its:		Director
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM PRINCIPAL OPPORTUNITIES FUND IV GP LTD.
				By:		Oaktree Capital Management, L.P.
				Its:		Director
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OAKTREE CAPITAL MANAGEMENT, L.P.
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OAKTREE HOLDINGS, INC.
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President
				OCM FIE, LLC
				By:		Oaktree Capital Management, L.P.
				Its:		Managing Member
				By:		/s/ Xxxxx Xxxxx
				Name:		Xxxxx Xxxxx
				Title:		Vice President