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                                                                    Exhibit 21.1

                           Hanover Compressor Company
                              List of Subsidiaries

1.   Aurora Barbados, SRL, a West Indies, Barbados corporation

2.   Belleli Energy, SrL, an Italian corporation and owned 20% by Hanover

3.   Burnett & Lewis Ltd. (Inactive), a United Kingdom corporation

4.   Collicutt Hanover Services, Ltd., a Canadian corporation and owned 24.1% by
     Hanover Compression Limited Partnership

5.   Collicutt-Hanover Compression Co., a Nova Scotia unlimited liability
     company

6.   Contract Compression International Argentina, S.A., an Argentine
     corporation

7.   Cosacol Ltda (Colombia Limitada), a Colombia Limitada and owned 59% by
     Hanover

8.   DR Argentina SA, an Argentine corporation

9.   DR Compression Services S.A., a Swiss corporation

10.  E I Venezuela Development Ltd., a Cayman Islands company

11.  Energy Transfer Hanover Ventures, LP, a Delaware Limited Partnership, owned
     98% by Hanover

12.  Gulf Coast Dismantling, Inc., a Texas corporation

13.  Hanover Asia, Inc., a Delaware corporation

14.  Hanover Canada, Inc. (Inactive), a Canadian NRO

15.  Hanover Australia LLC, a Delaware limited liability company

16.  Hanover Cayman Limited, a Cayman Islands company

17.  Hanover Compressed Natural Gas Services, LLC, a Delaware limited liability
     company

18.  Hanover Compression General Holdings, LLC, a Delaware limited liability
     company

19.  Hanover Compression Limited Partnership, a Delaware limited partnership,
     and in certain states doing business as:

          Hanover Compression General Holdings
          HCL Holdings




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          Hanover General Holdings
          Hanover Compressor Limited Holdings
          Hanover Maintech
          Hanover/Smith
          Hanover Acquisition
          Hanover Land
          Eureka Energy
          Hanover Applied Process Solutions
          T. H. Russell
          Hanover Russell
          CDI Holdings
          Compressor Dynamics
          Production Operators
          Hanover OEC Compression
          Ouachita Energy
          Hanover Energy Services
          RX Oil & Gas
          Prime Compression Services
          Unit Partners
          Victoria Compression Services
          Contract Engineering & Operating
          Southern Maintenance Services
          Transmission Systems
          TTV
          Prop
          HES
          Hanover South Texas Production
          Hanover - Power Machinery
          HC

20.  Hanover Compressor Capital Trust, a Delaware business trust

21.  Hanover Compressor Colombia Ltd. (Inactive), a Colombian limitada and owned
     51% by Hanover

22.  Hanover Compressor Colombia, Inc., a Delaware corporation

23.  Hanover Compressor Company Bolivia, Ltd., a Bolivian company

24.  Hanover Compressor Holding Company NL BV, a Dutch company

25.  Hanover Compressor Mexico SRL (Inactive), a Mexican limited liability
     company

26.  Hanover Compressor Peru SAC, a Peruvian corporation

27.  Hanover Compressor Surcursal Mexico, a Mexican branch

28.  Hanover do Brazil, Ltda., a Brazilian limitada

29.  Hanover Venezuela, Ltd., a Venezuelan branch of a Cayman Islands
     corporation


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30.  Hanover Ecuador L.L.C., a Delaware limited liability company

31.  Hanover General Energy Transfer, LLC, a Delaware limited liability company

32.  Hanover IDR, Inc., a Delaware corporation

33.  Hanover Limited Energy Transfer LLC, a Delaware limited liability company

34.  Hanover Malaysia SDN BHD, a Malaysian company and owned 60% by Hanover

35.  Hanover Maloney Inc. f/k/a Maloney Industries Inc., an Alberta Canada
     corporation

36.  Hanover Measurement, LLC, a Delaware limited liability company

37.  Hanover Measurement Services Company, LP, a Delaware limited partnership

38.  Hanover Partners Nigeria L.L.C., a Delaware limited liability company

39.  Hanover SPE, L.L.C., a Delaware limited liability company

40.  Hanover Trade Corp., a West Indies Barbados corporation

41.  Hanover Trinidad LLC, a Delaware limited liability company

42.  Hanover/Cosacol Consortium, a Colombian consortium

43.  HC Cayman LLC, a Delaware limited liability company

44.  HC Leasing, Inc., a Delaware corporation

45.  HCC Holdings, Inc., a Delaware corporation

46.  H.C.C. Compressor de Venezuela. C.A., a Venezuelan corporation

47.  HCL Colombia, Inc., a Delaware corporation

48.  HCL Holdings, LLC, a Delaware limited liability company

49.  Houston Flow Measurement, Inc., a Texas corporation

50.  KOG, Inc., a Delaware corporation

51.  Maloney Industries (France) S.A., a French corporation

52.  Maloney Industries International Ltd., an Alberta Canada corporation

53.  Maloney Industries Limited, a United Kingdom holding company

54.  Maloney Industries (UK) Ltd., a United Kingdom corporation

55.  Mid Continent Measurement, Inc., an Oklahoma corporation

56.  PT Hanover Indonesia, an Indonesian company


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57.  POI Operating Company S. de R.L., a Mexican limited liability company

58.  POI Mexico Service Company S. de R.L., a Mexican limited liability company

59.  Power Machinery, Inc (fka PWRMI Acquisition, Inc), a Delaware corporation

60.  Production Operators Argentina S.A., an Argentine corporation

61.  Production Operators Venezuela C.A., a Venezuelan corporation

62.  Production Operators Cayman, Inc., a Cayman Islands corporation

63.  Production Operators Cayman (El Furrial) Ltd., a Cayman Islands limited
     liability company

64.  Proyecto Gas Natural PGN, C.A, a Venezuelan corporation

65.  Servi Compressores, C.A, a Venezuelan corporation and owned 50% Hanover

66.  Servicios Tipsa, S.A., an Argentine corporation

67.  Southwest Industries Inc., a Delaware corporation

68.  Sunterra Energy Corporation, an Oklahoma corporation

69.  Talleres Petroleros de Colombia Ltda., a Colombian limitada

70.  Tubefabs Ltd. (inactive), a United Kingdom corporation

71.  Wells-Hall Manufacturing Ltd., an Alberta Canada corporation

72.  WilPro Energy Services (Guara) Limited, a Cayman Islands limited liability
     company

73.  WillPro Energy Services (PIGAP II) Limited, a Cayman Islands limited
     liability company

74.  HCC Mantova S.r.l., an Italian corporation

75.  Hallmark Production Systems, Inc., a Texas Corporation

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