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
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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