EX-10.3



 Exhibit 10.3 

(Part 1 of 3) 
  

			
	 




	 	 PRESIDENT - ROBERT C. BARG

 
 VICE
PRESIDENTS
 ALLEN E. EVANS, JR.

RANDOLPH K.GREEN

JOHN G. HATTNER

C. H. (SCOTT) REES III

DANNY D. SIMMONS

DAN PAUL SMITH

ERIC J. STEVENS


 April 26, 2018 

Ing. Carlos Alberto Treviño Medina 
 Petróleos
Mexicanos 
 Avenida Marina Nacional 329 
 Torre Ejecutiva, Piso
44 
 Colonia Verónica Anzures 
 11300 Ciudad de
México, México 
 Dear Ing. Treviño Medina: 

We hereby consent to all references to our firm as set forth in the Annual Report on Form 20-F of Petróleos
Mexicanos (“Pemex”) for the year ending December 31, 2017 (the “Form 20-F”), under the heading “Exploration and Production (Reserves),” and to the filing of our audit letter
dated April 24, 2018, as an exhibit to the Form 20-F. We have audited the estimates of Pemex’s proved oil, condensate, natural gas, and oil equivalent reserves, as of January 1, 2018, for 71
fields located in the Poza Rica-Altamira District in the North Region of Mexico. These estimates were prepared by Pemex Exploración y Producción in accordance with the reserves definitions of Regulation
S-X Rule 4-10(a) of the U.S. Securities and Exchange Commission. 
  

			
	Sincerely,
	
	NETHERLAND, SEWELL INTERNATIONAL, S. DE R.L. DE C.V.
		
	By:	 	




		 	  

		 	Robert C. Barg, P.E.
		 	President


 RCB:LMS 

2100 ROSS AVENUE, SUITE 2200 • DALLAS, TEXAS 75201-2737
• PH: 214-969-5401 • FAX: 214-969-5411








 Exhibit 10.3 

(Part 2 of 3) 
  

			
	 




	 	 PRESIDENT - ROBERT C. BARG

 
 VICE
PRESIDENTS
 ALLEN E. EVANS, JR.

RANDOLPH K.GREEN

JOHN G. HATTNER

C. H. (SCOTT) REES III

DANNY D. SIMMONS

DAN PAUL SMITH

ERIC J. STEVENS


 April 26, 2018 

Ing. Carlos Alberto Treviño Medina 
 Petróleos
Mexicanos 
 Avenida Marina Nacional 329 
 Torre Ejecutiva, Piso
44 
 Colonia Verónica Anzures 
 11300 Ciudad de
México, México 
 Dear Ing. Treviño Medina: 

We hereby consent to all references to our firm as set forth in the Annual Report on Form 20-F of Petróleos
Mexicanos (“Pemex”) for the year ending December 31, 2017 (the “Form 20-F”), under the heading “Exploration and Production (Reserves),” and to the filing of our audit letter
dated April 24, 2018, as an exhibit to the Form 20-F. We have audited the estimates of Pemex’s proved oil, condensate, natural gas, and oil equivalent reserves, as of January 1, 2018, for 30
fields located in the Litoral de Tabasco Asset in the Southwest Marine Region. These estimates were prepared by Pemex Exploración y Producción in accordance with the reserves definitions of Regulation
S-X Rule 4-10(a) of the U.S. Securities and Exchange Commission. 
  

			
	Sincerely,
	
	NETHERLAND, SEWELL INTERNATIONAL, S. DE R.L. DE C.V.
		
	By:	 	




		 	  

		 	Robert C. Barg, P.E.
		 	President


 RCB:LMS 

2100 ROSS AVENUE, SUITE 2200 • DALLAS, TEXAS 75201-2737
• PH: 214-969-5401 • FAX: 214-969-5411








 Exhibit 10.3 

(Part 3 of 3) 
  

			
	 




	 	 PRESIDENT - ROBERT C. BARG

 
 VICE
PRESIDENTS
 ALLEN E. EVANS, JR.

RANDOLPH K.GREEN

JOHN G. HATTNER

C. H. (SCOTT) REES III

DANNY D. SIMMONS

DAN PAUL SMITH

ERIC J. STEVENS


 April 26, 2018 

lng. Carlos Alberto Treviño Medina 
 Petróleos
Mexicanos 
 Avenida Marina Nacional 329 
 Torre Ejecutiva, Piso
44 
 Colonia Verónica Anzures 
 11300 Ciudad de
México, México 
 Dear lng. Treviño Medina: 

We hereby consent to all references to our firm as set forth in the Annual Report on Form 20-F of Petróleos
Mexicanos (“Pemex”) for the year ending December 31, 2017 (the “Form 20-F”), under the heading “Exploration and Production (Reserves),” and to the filing of our audit letter dated
April 24, 2018, as an exhibit to the Form 20-F. We have audited the estimates of Pemex’s proved oil, condensate, natural gas, and oil equivalent reserves, as of January 1, 2018, for 27 fields located in the Aceite Terciario del Golfo District
in Veracruz, Mexico. These estimates were prepared by Pemex Exploración y Producción in accordance with the reserves definitions of Regulation S-X Rule
4-10(a) of the U.S. Securities and Exchange Commission. 
  

					
		  	Sincerely,
		
		  	NETHERLAND, SEWELL INTERNATIONAL, S. DE R.L. DE C.V.
			
		  	By:	 	




		  		 	  

		  		 	Robert C. Barg, P.E.                                
                                         
   
		  		 	President

 RCB:LMS 
 2100
ROSS AVENUE, SUITE 2200 • DALLAS, TEXAS 75201-2737 • PH: 214-969-5401
• FAX: 214-969-5411