Type	Name	Date
Credit agreement	Amendment No. 1 to Credit Agreement, by and among Wells Fargo Bank, National Association, as administrative agent, as administrative agent, the lenders named therein, Nomac Drilling, L.L.C., Performance Technologies, L.L.C., Great Plains Oilfield Rental, L.L.C., Hodges Trucking Company, L.L.C. and Oilfield Trucking Solutions, L.L.C., as borrowers, and the guarantors named therein	05/14/2015
Indenture	Supplemental Indenture, by and between Chesapeake Oilfield Operating, L.L.C., Chesapeake Oilfield Finance, Inc., Seventy Seven Operating LLC and The Bank of New York Mellon Trust Company N.A	07/01/2014
Credit agreement	Term Loan Credit Agreement, by and among Chesapeake Oilfield Operating, L.L.C., Seventy Seven Operating LLC, as borrower, Bank of America, N.A., as administrative agent and the lenders named therein	07/01/2014
Securities purchase agreement	Purchase Agreement, by and among the Issuer and the Initial Purchasers named therein, relating to the offering of the Notes	06/13/2014