Exhibit 21.1
Page 1 of 3

Apache Corporation (a Delaware corporation)
Listing of Subsidiaries as of February 20, 2009

Exact Name of Subsidiary and Name	Jurisdiction of
under which Subsidiary does Business	Incorporation or Organization
Apache Corporation (New Jersey)		New Jersey
Apache Crude Oil Marketing, Inc.		Delaware
Apache Delaware Investment LLC		Delaware
Apache Delaware V LLC		Delaware
Apache Dory Corporation LDC		Cayman Islands
Apache East Ras Budran Corporation LDC		Cayman Islands
Apache Energy Limited		Western Australia
Apache Australia Offshore Holdings Pty Ltd		Western Australia
Apache PVG Pty Ltd		Western Australia
Apache Coniston Novara Holdings Pty Ltd		Western Australia
Apache Coniston Novara Pty Ltd		Western Australia
Apache DCDP Holdings Pty Ltd		Western Australia
Apache DCDP Pty Ltd		Western Australia
Apache East Spar Pty Limited		Western Australia
Apache Halyard Holdings Pty Ltd		Western Australia
Apache Halyard Pty Ltd		Western Australia
Apache Hurricane Holdings Pty Ltd		Western Australia
Apache Hurricane Pty Ltd		Western Australia
Apache Julimar Holdings Pty Ltd		Western Australia
Apache Julimar Pty Ltd		Western Australia
Apache Kersail Pty Ltd		Victoria, Australia
Apache Macedon Holdings Pty Ltd		Western Australia
Apache Macedon Pty Ltd		Western Australia
Apache Maitland Holdings Pty Ltd		Western Australia
Apache Maitland Pty Ltd		Western Australia
Apache Northwest Pty Ltd.		Western Australia
Apache Oil Australia Pty Limited		New South Wales, Australia
Apache Permits Pty Ltd		Western Australia
Apache Reindeer Holdings Pty Ltd		Western Australia
Apache Reindeer Pty Ltd		Western Australia
Apache Finance Louisiana Corporation		Delaware
Apache Foundation		Minnesota
Apache Gathering Company		Delaware
Apache GOM Pipeline, Inc.		Delaware
Apache Holdings, Inc.		Delaware
Apache International LLC (formerly Apache International, Inc.)		Delaware
Apache North America, Inc.		Delaware
Apache Egypt Midstream Holdings I LDC		Cayman Islands
Apache Egypt Midstream Holdings II LDC		Cayman Islands
Apache Egypt Midstream Holdings III LDC		Cayman Islands
Apache Egypt Midstream Holdings IV LDC		Cayman Islands
Apache Elver Corporation LDC		Cayman Islands
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 Khalda Corporation LDC		Cayman Islands
Apache Madfish Corporation LDC		Cayman Islands
Apache Qarun Corporation LDC		Cayman Islands
Apache Qarun Exploration Company LDC		Cayman Islands
Apache Louisiana Holdings, LLC		Delaware

Page 2 of 3

Apache Corporation (a Delaware corporation)
Listing of Subsidiaries as of February 20, 2009

Exact Name of Subsidiary and Name	Jurisdiction of
under which Subsidiary does Business	Incorporation or Organization
Apache Louisiana Minerals LLC (formerly Apache Louisiana Minerals, Inc.)		Delaware
Apache Marketing, Inc.		Delaware
Apache Midstream Enterprises, Inc.		Delaware
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 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 Petrolera Argentina S.A. (formerly Apache FC Argentina Company LDC)		Argentina
Apache Madera Corporation LDC		Cayman Islands
Apache Matruh Corporation LDC		Cayman Islands
Apache Mediterranean Corporation LDC		Cayman Islands
Apache Luxembourg Holdings I S.a.r.l		Luxembourg
Apache Luxembourg Holdings II S.a.r.l.		Luxembourg
Apache Luxembourg Holdings III LDC		Cayman Islands
Apache North Bahariya Corporation 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 International Finance S.à 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 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 Permian Basin Investment Corporation		Delaware
Apache Permian Basin Corporation		Delaware
LeaCo New Mexico Exploration and Production LLC		Delaware
Permian Basin Joint Venture LLC		Delaware
Apache Ravensworth Corporation LDC		Cayman Islands
Apache Shady Lane Ranch Inc.		Delaware
Apache Stoneaxe Corporation LDC		Cayman Islands
Apache Transfer Company		Delaware
Apache Transmission Corporation — Texas		Texas
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

Page 3 of 3

Apache Corporation (a Delaware corporation)
Listing of Subsidiaries as of February 20, 2009

Exact Name of Subsidiary and Name	Jurisdiction of
under which Subsidiary does Business	Incorporation or Organization
Apache West Texas Holdings, Inc.		Delaware
Apache West Texas Investment LLC		Delaware
CV Energy Corporation		Delaware
Clear Creek Hunting Preserve, Inc.		Wyoming
Cottonwood Aviation, Inc.		Delaware
DEK Energy Company		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 Austria Investment LDC		Cayman Islands
Apache Canada Argentina Investment ULC		Alberta, Canada
Apache Natural Resources Petrolera
Argentina S.R.L.		Argentina
*TDF Oil and Gas Company LDC		Cayman Islands
Petrolera TDF Company S.R.L.		Argentina
*TDF O&G Company LDC		Cayman Islands
*LF Oil and Gas Company LDC		Cayman Islands
Petrolera LF Company S.R.L.		Argentina
*LF O&G Company LDC		Cayman Islands
*Neuquen Oil and Gas Company LDC		Cayman Islands
Apache Energía Argentina S.R.L.		Argentina
*Neuquen O&G Company LDC		Cayman Islands
*Apache Austria Finance GmbH		Austria
*Apache Austria Holding GmbH		Austria
Apache Canada Chile Holdings ULC		Alberta, Canada
Apache Chile Energìa SPA		Chile
Apache Canada Chile Investment ULC		Alberta, Canada
Apache Canada GP Ltd		Alberta, Canada
Apache Canada Properties Ltd.		Alberta, Canada
Apache Canada Zama Pipeline Ltd.		Federal - Canada
Apache FC Capital Canada Inc.		Alberta, Canada
Apache FC Canada Enterprises Inc.		Alberta, Canada
Apache Lenga Holdings LDC		Cayman Islands
Apache Lenga Investment LLC		Delaware
Apache Rusfin Investment LLC		Delaware
GOM Operating Company		Delaware
GOM Shelf, LLC		Delaware
Nile Weavers, Inc.		Delaware
Phoenix Exploration Resources, Ltd.		Delaware
TEI Arctic Petroleum (1984) Ltd.		Alberta, Canada
Texas International Company		Delaware
Wheelco Energy LLC		Delaware

* In liquidation