Document:

EX-10.1

    Exhibit 10.1

 

    June 26,
    2009
    

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the references to our firm as set forth in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008, under the heading “Exploration and Production
    (Reserves)”. We reviewed the estimates of proved oil,
    condensate, natural gas and oil equivalent reserves owned by the
    United Mexican States (“Mexico”) for 276 fields. These
    estimates were prepared in accordance with the reserves
    definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located onshore in and offshore from Mexico in the
    Northern Region, and are those referenced in our audit letter
    dated June 5, 2009.

 

    /s/  Ryder
    Scott Company, L.P.

    RYDER SCOTT COMPANY, L.P.

    TBPE License
    No. F-1580EX-10.2

    Exhibit 10.2

    (1 of 2)

 

    June 26,
    2009
    

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to all references to our firm as set forth in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008, under the heading “Exploration and Production
    (Reserves)”. We reviewed the estimates of proved oil,
    condensate, natural gas, and oil equivalent reserves owned by
    the United Mexican States (“Mexico”) as of
    December 31, 2008, for 23 fields. These estimates were
    prepared in accordance with the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located offshore from Mexico in the Northeastern
    Marine Region and are those referenced in our audit letter dated
    May 14, 2009.

 

    Sincerely,

 

    NETHERLAND, SEWELL INTERNATIONAL,

    S. DE R.L. DE C.V.

 

    By:
    /s/  Robert
    C. Barg

    Robert C. Barg, P.E.

    President

 

    Exhibit 10.2

    (2 of 2)

 

    June 26,
    2009
    

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to all references to our firm as set forth in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008, under the heading “Exploration and Production
    (Reserves)”. We reviewed the estimates of proved oil,
    condensate, natural gas, and oil equivalent reserves owned by
    the United Mexican States (“Mexico”) as of
    December 31, 2008, for 100 fields. These estimates were
    prepared in accordance with the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located onshore in Mexico in the Southern Region and
    are those referenced in our audit letter dated May 15, 2009.

 

    Sincerely,

 

    NETHERLAND, SEWELL INTERNATIONAL,

    S. DE R.L. DE C.V.

 

    By:
    /s/  Robert
    C. Barg

    Robert C. Barg, P.E.

    PresidentEX-10.3

    Exhibit 10.3

    (1 of 5)

 

    June 26, 2009

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the references to Gaffney,
    Cline & Associates Inc. as set forth under the heading
    “Exploration and Production (Reserves),” in the Annual
    Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008. We reviewed the estimates of proved oil, condensate,
    natural gas, and oil equivalent reserves owned by the United
    Mexican States (“Mexico”) as of January 1, 2009,
    for eight fields. These estimates were prepared in accordance
    with the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located in Block Misión (Block 4) in
    Burgos Basin of the Northern Region, and are those referenced in
    our certificate letter dated January 10, 2009.

 

    Very truly yours,

 

    /s/  Gaffney,
    Cline & Associates Inc.

    Gaffney, Cline & Associates Inc.

 

    Exhibit 10.3

    (2 of 5)

 

    June 26, 2009

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the reference to Gaffney, Cline &
    Associates Inc. as an engineering firm as set forth under the
    heading “Exploration and Production (Reserves),” in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008. We reviewed the estimates of proved oil, condensate,
    natural gas, and oil equivalent reserves owned by the United
    Mexican States (“Mexico”) as of January 1, 2009,
    for 4 fields. These estimates were prepared in accordance with
    the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located in Block Cuervito (Block 5) in
    Burgos Basin of the Northern Region, and are those referenced in
    our certificate letter dated January 6, 2009.

 

    Yours sincerely,

 

    GAFFNEY, CLINE & ASSOCIATES, INC.

 

    /s/  Rawdon
    J.H. Seager

    Rawdon J.H. Seager

 

    Exhibit 10.3

    (3 of 5)

 

    June 26, 2009

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the reference to Gaffney, Cline &
    Associates Inc. as an engineering firm as set forth under the
    heading “Exploration and Production (Reserves),” in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008. We reviewed the estimates of proved oil, condensate,
    natural gas, and oil equivalent reserves owned by the United
    Mexican States (“Mexico”) as of January 1, 2009,
    for 4 fields. These estimates were prepared in accordance with
    the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located in Block Fronterizo (Block 6) in
    Burgos Basin of the Northern Region, and are those referenced in
    our certificate letter dated January 6, 2009.

 

    Yours sincerely,

 

    GAFFNEY, CLINE & ASSOCIATES, INC.

 

    /s/  Rawdon
    J.H. Seager

    Rawdon J.H. Seager

 

    Exhibit 10.3

    (4 of 5)

 

    June 26, 2009

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the reference to Gaffney, Cline &
    Associates Inc. as an engineering firm as set forth under the
    heading “Exploration and Production (Reserves),” in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008. We reviewed the estimates of proved oil, condensate,
    natural gas, and oil equivalent reserves owned by the United
    Mexican States (“Mexico”) as of January 1, 2009,
    for 3 fields. These estimates were prepared in accordance with
    the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located in Block Monclova in Sabinas Basin of the
    Northern Region, and are those referenced in our certificate
    letter dated January 13, 2009.

 

    Yours sincerely,

 

    GAFFNEY, CLINE & ASSOCIATES, INC.

 

    /s/  Rawdon
    J.H. Seager

    Rawdon J.H. Seager

 

    Exhibit 10.3

    (5 of 5)

 

    June 26, 2009

 

    Mr. Jesús Reyes Heroles González Garza

    Director General

    Petróleos Mexicanos

    Avenida Marina Nacional No. 329

    Colonia Huasteca C.P. 11311

    México

 

    Dear Mr. Reyes Heroles:

 

    We hereby consent to the reference to Gaffney, Cline &
    Associates Inc. as an engineering firm as set forth under the
    heading “Exploration and Production (Reserves),” in
    the Annual Report on
    Form 20-F
    of Petróleos Mexicanos for the year ended December 31,
    2008. We reviewed the estimates of proved oil, condensate,
    natural gas, and oil equivalent reserves owned by the United
    Mexican States (“Mexico”) as of January 1, 2009,
    for 7 fields. These estimates were prepared in accordance with
    the reserves definitions of
    Rules 4-10(a)
    (1)-(13) of
    Regulation S-X
    of the United States Securities and Exchange Commission. The
    fields are located in Block Reynosa-Monterrey in Burgos Basin of
    the Northern Region, and are those referenced in our certificate
    letter dated January 8, 2009.

 

    Yours sincerely,

 

    GAFFNEY, CLINE & ASSOCIATES, INC.

 

    /s/  Rawdon
    J.H. Seager

    Rawdon J.H. Seager

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