EXHIBIT 21.1
List of Subsidiaries of WPX Energy, Inc.
(all Delaware entities unless otherwise indicated)
1. Barrett Resources International Corporation – a Delaware corporation
2. Bison Royalty, LLC
3. Diamond Elk, LLC – a Colorado limited liability company
4. Fort Union Gas Gathering, LLC
5. Mockingbird Pipeline, LP – a Delaware limited partnership
6. Northwest Argentina Corporation – a Utah corporation
7. RW Gathering, LLC
8. WPX Energy Appalachia, LLC
9. WPX Energy Arkoma Gathering, LLC
10. WPX Energy Enterprises, Inc. – a Delaware corporation
11. WPX Energy Gulf Coast, LP
12. WPX Energy Holdings, LLC
13. WPX Energy Keystone, LLC
14. WPX Energy Marcellus Gathering, LLC
15. WPX Energy Mid-Continent Company, an Oklahoma corporation
16. WPX Energy Production, LLC
17. WPX Energy Rocky Mountain, LLC
18. WPX Energy RM Company, a Delaware corporation
19. WPX Energy Ryan Gulch, LLC
20. WPX Energy Marketing, LLC
21. WPX Energy Marketing Services Company, LLC
22. WPX Energy Services Company, LLC
23. WPX Energy Van Hook Gathering Services, LLC
24. WPX Energy Williston, LLC
25. WPX Gas Resources Company, a Delaware corporation
International subsidiaries:
1. WPX Energy International Oil and Gas (Venezuela), Ltd. – a Cayman Islands corporation
2. Apco Oil and Gas International Inc. – a Cayman Islands corporation
3. Apco Argentina S.A – an Argentina entity
4. Apco Austral, S.A. – an Argentina entity
5. Apco Properties Ltd. – a Cayman Islands corporation