1 EXHIBIT 21.1 PAGE 1 OF 2 APACHE CORPORATION - LISTING OF SUBSIDIARIES AS OF FEBRUARY 28, 1999 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------------------- ------------------------------------- Apache Corporation (New Jersey) New Jersey Apache Foundation Minnesota Apache Gathering Company Delaware Apache Holdings, Inc. Delaware Apache International, Inc. Delaware Apache Cote d'Ivoire, Inc. Delaware Apache Qarun Corporation LDC Cayman Islands Apache Overseas, Inc. Delaware Apache Abu Gharadig Corporation LDC Cayman Islands Apache Asyout Corporation LDC Cayman Islands Apache Bohai Corporation LDC Cayman Islands Apache China Corporation LDC Cayman Islands Apache Cote d'Ivoire Petroleum LDC Cayman Islands Apache Darag Corporation LDC Cayman Islands Apache East Bahariya Corporation LDC Cayman Islands Apache Faiyum Corporation LDC Cayman Islands Apache Matruh Corporation LDC Cayman Islands Apache Mediterranean Corporation LDC Cayman Islands Apache Poland Holding Company Delaware Apache Eastern Europe B.V. Netherlands Apache Poland Sp. z o.o. Poland Nagasco, Inc. Delaware Apache Marketing, Inc. Delaware Apache Transmission Corporation - Texas Texas Apache Crude Oil Marketing, Inc. Delaware Nagasco Marketing, Inc. Delaware Apache Oil Corporation Texas Burns Manufacturing Company Minnesota Apache Energy Limited Western Australia Apache Northwest Pty Ltd. Western Australia Apache Carnarvon Pty Ltd. Western Australia Apache Dampier Pty Ltd. Western Australia Apache East Spar Pty Limited Western Australia Apache Finance Pty Ltd Australian Capital Territory Apache Harriet Pty Limited Victoria, Australia Apache Oil Australia Pty Limited New South Wales, Australia Apache Airlie Pty Limited New South Wales, Australia Apache Varanus Pty Limited Queensland, Australia Apache Pipeline Pty Ltd Western Australia Apache West Australia Holdings Limited Island of Guernsey Apache UK Limited England and Wales Apache Lowendal Pty Limited Victoria, Australia 2 EXHIBIT 21.1 PAGE 2 OF 2 APACHE CORPORATION - LISTING OF SUBSIDIARIES AS OF FEBRUARY 28, 1999 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------------------- ------------------------------------- DEK Energy Company Delaware DEK Energy Texas, Inc. Delaware DEK Exploration Inc. Delaware DEK Petroleum Corporation Illinois Apache Canada Ltd. Alberta, Canada DEPCO, Inc. Texas Heinold Holdings, Inc. Delaware Phoenix Exploration Resources, Ltd. Delaware TEI Arctic Petroleum (1984) Ltd. Alberta, Canada Texas International Company Delaware Apache Khalda Corporation LDC Cayman Islands Apache Khalda, Inc. Delaware Apache Qarun Exploration Company LDC Cayman Islands Phoenix Resources Company of Qarun Delaware Apache North America, Inc. Delaware