Exhibit 21

SUBSIDIARIES

OF

CHESAPEAKE ENERGY CORPORATION

Oklahoma Corporation

Corporations	State of Organization
Chesapeake Eagle Canada Corp. Chesapeake Energy Louisiana Corporation Chesapeake Energy Marketing, Inc. Chesapeake Operating, Inc. Chesapeake PRH Corp. Chesapeake South Texas Corp. Nomac Drilling Corporation Oxley Petroleum Co.	New Brunswick Oklahoma Oklahoma Oklahoma Texas Oklahoma Oklahoma Oklahoma
Limited Liability Companies	State of Formation
Carmen Acquisition, L.L.C. Chesapeake Acquisition, L.L.C. Chesapeake ENO Acquisition, L.L.C. Chesapeake EP, L.L.C. Chesapeake Land Company, L.L.C. Chesapeake ORC, L.L.C. Chesapeake Permian Acquisition, L.L.C. Chesapeake Royalty, L.L.C. Gothic Production, L.L.C. John C. Oxley, L.L.C. MC Mineral Company, L.L.C. Mayfield Processing, L.L.C.	Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma
Partnerships
Chesapeake Exploration Limited Partnership Chesapeake Louisiana, L.P. Chesapeake NFW, L.P. Chesapeake Permian, L.P. Chesapeake Sigma, L.P. Chesapeake-Staghorn Acquisition L.P. Chesapeake Zapata, L.P. MidCon Compression, L.P.	Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma Oklahoma