EXHIBIT 21.1 PAGE 1 OF 3 APACHE CORPORATION (A DELAWARE CORPORATION) LISTING OF SUBSIDIARIES AS OF FEBRUARY 28, 2006 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------ ----------------------------- Apache Corporation (New Jersey) New Jersey Apache Aviation, Inc. Delaware Apache Delaware LLC Delaware Apache Delaware Investment LLC Delaware Apache Donard Corporation LDC Cayman Islands Apache Energy Limited Western Australia Apache Northwest 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 Varanus Pty Limited Queensland, Australia Apache Finance Louisiana Corporation Delaware Apache Foundation Minnesota Apache Gathering Company Delaware Apache Hadda Corporation LDC Cayman Islands Apache GOM Pipeline, Inc. Delaware Apache Holdings, Inc. Delaware Apache International, Inc. Delaware Apache FF Corporation LDC Cayman Islands Apache FS Corporation LDC Cayman Islands 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 Khalda Corporation LDC Cayman Islands Apache Kultarr Corporation LDC Cayman Islands Apache Libya Corporation LDC Cayman Islands Apache Louisiana Holdings, LLC Delaware Apache Louisiana Minerals, Inc. Delaware Apache Midstream Enterprises, Inc. Delaware Apache Nero Corporation LDC Cayman Islands Apache Oil Corporation Texas Apache Overseas, Inc. Delaware Apache Abu Gharadig Corporation LDC Cayman Islands Apache Argentina Corporation LDC Cayman Islands 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 1 EXHIBIT 21.1 PAGE 2 OF 3 APACHE CORPORATION (A DELAWARE CORPORATION) LISTING OF SUBSIDIARIES AS OF FEBRUARY 28, 2006 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------ ----------------------------- Apache FC Argentina Company LDC Cayman Islands Apache Madera Corporation LDC Cayman Islands Apache Matruh Corporation LDC Cayman Islands Apache Mediterranean Corporation LDC Cayman Islands Apache Luxembourg Holdings III LDC Cayman Islands Apache North El Diyur 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 North Sea Limited England and Wales Apache North Tarek Corporation LDC Cayman Islands Apache Petrolera Argentina S.A. Argentina Apache Poland Holding Company Delaware Apache Shushan Corporation LDC Cayman Islands Apache South Umbarka Corporation LDC Cayman Islands Apache Umbarka Corporation LDC Cayman Islands Apache West Kalabsha Corporation LDC Cayman Islands Apache West Kanayis Corporation LDC Cayman Islands Apache Pleiades Corporation LDC Cayman Islands Apache Qarun Exploration Company LDC Cayman Islands Apache Ravensworth Corporation LDC Cayman Islands Apache Shady Lane Ranch Inc. Wyoming Apache Transfer Company Delaware Apache UK Limited England and Wales Apache Lowendal Pty Limited Victoria, Australia Apache West Texas Acquisition Corporation Delaware Texas and New Mexico Exploration LLC Delaware Apache West Texas Holdings, Inc. Delaware Apache West Texas Investment LLC Delaware Apache Yemen Corporation LDC Cayman Islands Burns Manufacturing Company Minnesota Clear Creek Hunting Preserve, Inc. Wyoming DEK Energy Company Delaware DEK Energy Texas, 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 Apache Canada Ltd. Alberta, Canada Apache Canada Argentina Holdings ULC Alberta, Canada Apache Canada Argentina Investment ULC Alberta, Canada Apache Natural Resources Petrolera Argentina S.R.L. Argentina Apache Canada Properties Ltd. Alberta, Canada 2 EXHIBIT 21.1 PAGE 3 OF 3 APACHE CORPORATION (A DELAWARE CORPORATION) LISTING OF SUBSIDIARIES AS OF FEBRUARY 28, 2006 EXACT NAME OF SUBSIDIARY AND NAME JURISDICTION OF UNDER WHICH SUBSIDIARY DOES BUSINESS INCORPORATION OR ORGANIZATION - ------------------------------------ ----------------------------- 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 LeaCo New Mexico Exploration and Production LLC Delaware Nagasco, Inc. Delaware Apache Crude Oil Marketing, Inc. Delaware Apache Marketing, Inc. Delaware Apache Transmission Corporation - Texas Texas Nagasco Marketing, Inc. Delaware Nile Weavers, Inc Delaware Phoenix Exploration Resources, Ltd. Delaware TEI Arctic Petroleum (1984) Ltd. Alberta, Canada Texas International Company Delaware