EXHIBIT 21.1


SUBSIDIARIES
OF
SM ENERGY COMPANY


A.
Wholly-owned subsidiaries of SM Energy Company, a Delaware corporation:

1.    Four Winds Marketing, LLC, a Colorado limited liability company
2.    SMT Texas LLC, a Colorado limited liability company
3.    Energy Leasing, Inc., an Oklahoma corporation
4.    Belring GP LLC, a Delaware limited liability company
5.    St. Mary Energy Louisiana LLC, a Delaware limited liability company
6.    Hilltop Investments, a Colorado general partnership
7.    Parish Ventures, a Colorado general partnership
8. Green Canyon Offshore LLC, a Delaware limited liability company.

B.    Other subsidiaries of SM Energy Company:

1.
Box Church Gas Gathering, LLC, a Colorado limited liability company (59%)

C.
Partnership or limited liability company interests held by SM Energy Company:

1.
Potato Creek Midstream, LLC, a Pennsylvania limited liability company (70%)
2.
Trinity River Systems, LTD, a Texas limited partnership (21%)
3.
1977 H.B Joint Account, a Colorado general partnership (8%)
4.
1976 H.B Joint Account, a Colorado general partnership (9%)
5.
1974 H.B Joint Account, a Colorado general partnership (4%)
6.
Sycamore Gas Systems, an Oklahoma general partnership (3%)

D.    Partnership interests held by SMT Texas, LLC:

1.
St. Mary Land East Texas LP, a Texas limited partnership (99%) (the remaining 1% interest is held by SM Energy Company)