Exhibit 21.1

List of Subsidiaries of WPX Energy, Inc.

(all Delaware entities unless otherwise indicated)

1.	Betterit Land & Title Holding Company, LLC - a New Mexico Limited Liability Company
	Fictitious name in Oklahoma: WPX Energy Chaco Slope, LLC
2.	Cardinal Oil and Gas Holdings, LLC
	DBA in New Mexico and Texas as: Cardinal Exploration & Production, LLC
3.	Red Eagle Gathering, LLC
4.	RKI Exploration & Production, LLC
5.	RW Gathering, LLC
6.	Stateline Crude, LLC - an Oklahoma LLC
7.	Stateline Gathering, LLC - an Oklahoma LLC
8.	Stateline Processing, LLC - an Oklahoma LLC
9.	Stateline Water, LLC - an Oklahoma LLC
10.	WPX Energy Appalachia, LLC
11.	WPX Energy Gulf Coast, LP
	Assumed name in Texas: Williams Prod. Gulf Coast, L.P.
12.	WPX Energy Holdings, LLC
13.	WPX Energy Keystone, LLC
14.	WPX Energy Marketing, LLC
15.	WPX Energy Mid-Continent Company, an Oklahoma corporation
16.	WPX Energy Production, LLC
	Fictitious name in Oklahoma: WEG-Production Company, LLC
17.	WPX Energy RM Company
18.	WPX Energy Services Company, LLC
19.	WPX Energy Williston, LLC
	Trade name in North Dakota: D3 E & P LLC

International subsidiaries:

1. WPX Energy International Oil & Gas (Venezuela), Ltd. – a Cayman Islands corporation