Exhibit 21.1

Subsidiaries of Plains Exploration & Production Company



|                                         |  |                             
|---------------------------------------- |  | ----------------------------
|Name of Subsidiary                       |  | Jurisdiction of Organization
|Arguello Inc.                            |  | Delaware                    
|Arroyo Grande Land Company LLC           |  | Delaware                    
|Brown PXP Properties, LLC                |  | Texas                       
|Cane River Development LLC               |  | Delaware                    
|Laramie Land & Cattle Company, LLC       |  | Colorado                    
|Latigo Gas Group, LLC                    |  | Texas                       
|Latigo Gas Holdings, LLC                 |  | Delaware                    
|Latigo Gas Services, LP                  |  | Texas                       
|Latigo Investments, LLC                  |  | Delaware                    
|Latigo Holdings (Texas), LLC             |  | Delaware                    
|Latigo Petroleum, Inc.                   |  | Delaware                    
|Latigo Petroleum Texas, LP               |  | Texas                       
|Lompoc Land Company LLC                  |  | Delaware                    
|Montebello Land Company LLC              |  | Delaware                    
|Nuevo Energy Company                     |  | Delaware                    
|Nuevo Ghana Inc.                         |  | Delaware                    
|Nuevo International Inc.                 |  | Delaware                    
|Nuevo Offshore Company                   |  | Delaware                    
|Nuevo Resources Inc.                     |  | Delaware                    
|Pacific Interstate Offshore Company      |  | California                  
|Plains Acquisition Corporation           |  | Delaware                    
|Plains Louisiana Inc.                    |  | Delaware                    
|Plains Resources Inc.                    |  | Delaware                    
|Plains Resources International Inc.      |  | Delaware                    
|Plains Vietnam Ltd.                      |  | Cayman Islands              
|Pogo Alberta, ULC                        |  | Canada                      
|Pogo Energy, Inc.                        |  | Texas                       
|Pogo Finance, ULC                        |  | Canada                      
|Pogo New Zealand                         |  | New Zealand                 
|Pogo New Zealand Holdings, LLC           |  | Delaware                    
|Pogo Offshore Pipeline Co.               |  | Delaware                    
|Pogo Panhandle 2004, L.P.                |  | Texas                       
|Pogo Partners Inc.                       |  | Texas                       
|Pogo Producing Company LLC               |  | Delaware                    
|Pogo Producing (San Juan) Company        |  | Texas                       
|Pogo Producing (Texas Panhandle) Company |  | Texas                       
|Pogo Services and Technology Company     |  | Delaware                    
|Pogo Vietnam Ltd.                        |  | Cayman Islands              
|PXP Aircraft LLC                         |  | Delaware                    
|PXP Brush Creek LLC                      |  | Delaware                    
|PXP CV Pipeline LLC                      |  | Delaware                    
|PXP Deepwater L.L.C.                     |  | Delaware                    
|PXP East Plateau LLC                     |  | Delaware                    
|PXP Gulf Coast Inc.                      |  | Delaware                    
|PXP Hells Gulch LLC                     |  | Delaware                    
|PXP Louisiana L.L.C.                     |  | Delaware                    
|PXP Permian Inc.                         |  | Delaware                    
|PXP Piceance LLC                         |  | Delaware                    
|PXP Texas Inc.                           |  | Delaware                    
|PXP Texas Limited Partnership            |  | Texas