Exhibit 21.1

SUBSIDIARIES OF CHAPARRAL ENERGY, INC.

Name of Subsidiary	Jurisdiction of Formation	Effective Ownership
Chaparral Resources, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
Chaparral Real Estate, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
Chaparral CO2, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
NorAm Petroleum, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
Triumph Tool & Supply, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
CEI Pipeline, L.L.C.	Texas	Chaparral Energy, Inc. – 100%
Chaparral Energy, L.L.C.	Oklahoma	Chaparral Energy, Inc. – 100%
CEI Acquisition, L.L.C.	Delaware	Chaparral Energy, L.L.C. – 100%
Calumet Oil Company	Oklahoma	Chaparral Energy, L.L.C. – 100%
JMG Oil & Gas, LP	Oklahoma	Chaparral Energy, L.L.C. – 1% CEI Acquisition, L.L.C. – 99%
Chaparral Texas, L.P.	Oklahoma	Chaparral Energy, L.L.C. – 1% CEI Acquisition, L.L.C. – 99%