EXHIBIT 21.1 PAGE 1 OF 2 APACHE CORPORATION (A DELAWARE CORPORATION) LISTING OF SUBSIDIARIES AS OF FEBRUARY 29, 2004 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------ ------------------------------ Apache Corporation (New Jersey) New Jersey Apache Ajax Corporation LDC Cayman Islands Apache BD Corporation LDC Cayman Islands Apache Aviation, Inc. Delaware Apache Delaware LLC Delaware Apache Finance Louisiana Corporation Delaware Apache Foundation Minnesota Apache Gathering Company Delaware Apache Gungurru Corporation LDC Cayman Islands Apache Holdings, Inc. Delaware Apache International, Inc. Delaware Apache North America, Inc. Delaware Apache Finance Australia Pty Limited Australian Capital Territory Apache Finance Pty Limited Australian Capital Territory Apache Australia Management Pty Limited Victoria, Australia Apache Australia Holdings Pty Limited Western Australia Apache Qarun Corporation LDC Cayman Islands Apache Kultar Corporation LDC Cayman Islands Apache Louisiana Holdings, LLC Delaware Apache Louisiana Minerals, Inc. Delaware Apache Overseas, Inc. Delaware Apache Abu Gharadig Corporation LDC Cayman Islands Apache Argentina Corporation LDC Cayman Islands Apache Petrolera Argentina S.A. Argentina (formerly RME Argentina S.A.) Apache Asyout Corporation LDC Cayman Islands Apache Bohai Corporation LDC Cayman Islands Apache China Management LDC Cayman Islands Apache China Holdings LDC Cayman Islands Apache Darag Corporation LDC Cayman Islands Apache East Bahariya Corporation LDC Cayman Islands Apache El Diyur Corporation LDC Cayman Islands Apache Enterprises LDC Cayman Islands Apache Faiyum Corporation LDC Cayman Islands Apache FC Argentina Company LDC Cayman Islands Apache Madera Corporation LDC Cayman Islands Apache North Sea Holdings LDC Cayman Islands Apache North Sea Management LDC Cayman Islands Apache International Holdings LLC Delaware Apache China Corporation LDC Cayman Islands Apache International Finance S.a r.l. Luxembourg Apache International Holdings II LLC Delaware Apache North Sea Investment England and Wales Apache Matruh Corporation LDC Cayman Islands Apache Mediterranean Corporation LDC Cayman Islands Apache North Sea Limited England and Wales Apache Poland Holding Company Delaware Apache Eastern Europe B.V. Netherlands Apache Poland Sp. z o.o. Poland EXHIBIT 21.1 PAGE 2 OF 2 APACHE CORPORATION (A DELAWARE CORPORATION) LISTING OF SUBSIDIARIES AS OF FEBRUARY 29, 2004 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------ ------------------------------ Apache South Umbarka Corporation LDC Cayman Islands Apache Umbarka Corporation LDC Cayman Islands Apache Oil Corporation Texas Apache Ravensworth Corporation LDC Cayman Islands 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 Harriet Pty Limited Victoria, Australia Apache Kersail Pty Ltd Victoria, Australia Apache Miladin Pty Ltd Victoria, Australia Apache Nasmah Pty Ltd 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 Apache Transfer Company Delaware Clear Creek Hunting Preserve, Inc. Wyoming DEK Energy Company Delaware DEK Energy Texas, Inc. Delaware DEK Exploration Inc. Delaware Apache Finance Canada Corporation Nova Scotia, Canada Apache Canada Management Ltd Alberta, Canada Apache Canada Holdings Ltd Alberta, Canada Apache Canada Management II Ltd Alberta, Canada Apache Finance Canada II Corporation Nova Scotia, Canada DEK Petroleum Corporation Illinois Apache Canada Ltd. Alberta, Canada Apache Canada Properties Ltd. Alberta, Canada Apache FC Capital Canada Inc. Alberta, Canada Apache FC Canada Enterprises Inc. Alberta, Canada DEPCO, Inc. Texas Heinold Holdings, Inc. Delaware GOM Shelf, LLC Delaware Phoenix Exploration Resources, Ltd. Delaware TEI Arctic Petroleum (1984) Ltd. Alberta, Canada Texas International Company Delaware Apache Khalda Corporation LDC Cayman Islands Apache Qarun Exploration Company LDC Cayman Islands Nagasco, Inc. Delaware Apache Marketing, Inc. Delaware Apache Transmission Corporation - Texas Texas Apache Crude Oil Marketing, Inc. Delaware Nagasco Marketing, Inc. Delaware Nile Weavers, Inc Delaware