HALLIBURTON COMPANY EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT State or Country of Name of Company Incorporation Brown & Root AOC Limited United Kingdom Brown & Root Corporate Services, Inc. Delaware Brown & Root (Gulf) EC Bahrain Brown & Root Ealing Technical Services Limited United Kingdom Brown & Root Far East Engineers Pte Ltd. Delaware Brown & Root Far East Engineers Pte Ltd. Singapore Brown & Root Highlands Fabricators Limited United Kingdom Brown & Root Holdings, Inc. Delaware Brown & Root, Inc. Delaware Brown & Root Industrial Services, Inc. Delaware Brown & Root International, Inc. Delaware Brown & Root International, Inc. Panama Brown & Root Limited United Kingdom Brown & Root Projects Limited United Kingdom Brown & Root Saudi Limited Saudi Arabia Brown & Root Services Corporation Delaware Brown & Root Skoda SRO Ltd. Czech Republic Brown & Root Technical Services, Inc. Delaware Devonport Management Limited United Kingdom European Marine Contractors Limited United Kingdom G & H Management Company Delaware Geosource Service Corporation Texas GSI Saudi Arabia Ltd. Saudi Arabia Halliburton Argentina, SA Argentina Halliburton Australia Pty Ltd. Australia Halliburton BV Netherlands Halliburton Canada, Inc. Canada Halliburton Company Germany GmbH Germany Halliburton Consulting Services Nigeria Limited Nigeria Halliburton de Mexico, SA de CV Mexico Halliburton Energy Services Asia, Inc. Delaware Halliburton Global Limited Cayman Islands Halliburton Holdings, Inc. Delaware Halliburton Holdings Limited United Kingdom Halliburton International, Inc. Delaware Halliburton Italiana SpA Italy Halliburton Latin America SA Panama Halliburton Limited United Kingdom Halliburton Manufacturing and Services Limited United Kingdom Halliburton NUS Corporation Delaware Halliburton Offshore Services, Inc. Delaware Halliburton Oilfield Services (Norway), Inc. Delaware Halliburton Overseas Limited Cayman Islands Halliburton SARL France Subsidiaries of the Registrant State or Country of Name of Company Incorporation Halliburton Servicos Ltda Brazil Halliburton Singapore Pte Ltd. Singapore Halliburton Trinidad Limited Trinidad Halliburton West Africa Ltd. Cayman Islands Halliburton West Africa Ltd. Delaware Halliburton Worldwide Limited Cayman Islands Highlands Insurance Group, Inc. Delaware Highlands Insurance Company (UK) Limited United Kingdom Highlands Insurance Company Texas Highlands Limited Bermuda Highlands Overseas Limited Bermuda Howard Humphreys & Partners Limited United Kingdom Howard Humphreys Group Limited United Kingdom Hunting-Brae Limited United Kingdom MIHC, Inc. Delaware Overseas Marine Leasing Company Delaware PT Halliburton Indonesia Indonesia PT Halliburton Logging Services Indonesia Indonesia Rezayat Brown & Root Saudi Company Limited Saudi Arabia Rockwater A/S Norway Rockwater Holdings Limited United Kingdom Rockwater, Inc. Delaware Rockwater Limited United Kingdom Seaforth Maritime Limited United Kingdom Servicios Halliburton de Venezuela, SA Delaware Servicios Halliburton de Venezuela, SA Venezuela Southern California Bonding Service, Inc. California Underwriters' Special Risks, Inc. Texas (1) Each of the subsidiaries named conducts its business under its corporate name and, in a few instances, under a shortened form of its corporate name. (2) Registrant has 100% direct or indirect ownership in the subsidiaries named except for the following: Brown & Root AOC Limited, 50%; Brown & Root Skoda SRO Ltd., 66%; Devonport Management Limited, 30%; European Marine Contractors Ltd., 50%; Hunting-Brae Limited, 31%; GSI Saudi Arabia Ltd., 75%; PT Halliburton Indonesia, 80%; PT Halliburton Logging Services Indonesia, 80%; and Rezayat Brown & Root Saudi Company Limited, 25%. (3) The following subsidiaries are part of the Company's Insurance Services Group which was spun-off on January 23, 1996: Highlands Insurance Group, Inc., Highlands Insurance Company (UK) Limited, Highlands Insurance Company, Highlands Limited, Highlands Overseas Limited, Southern California Bonding Service, Inc., and Underwriters' Special Risks, Inc. (4) The names of approximately 138 subsidiaries have been omitted since the unnamed subsidiaries considered in the aggregate would not constitute a significant subsidiary as defined by Item 601(b)(21).