NUEVO ENERGY CO
S-4, EX-99.1, 2000-11-30
CRUDE PETROLEUM & NATURAL GAS
Previous: NUEVO ENERGY CO, S-4, EX-25.1, 2000-11-30
Next: NUEVO ENERGY CO, S-4, EX-99.2, 2000-11-30



<PAGE>   1

                                                                    EXHIBIT 99.1

                             LETTER OF TRANSMITTAL

                              NUEVO ENERGY COMPANY
                               OFFER TO EXCHANGE

              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES B
     THAT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 PURSUANT TO
                   THE PROSPECTUS DATED                , 2000

                                      FOR

                                ALL OUTSTANDING
              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES A

      THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
                      , 2000 UNLESS EXTENDED (THE "EXPIRATION DATE").
EXISTING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR
           TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE.

         DELIVER TO STATE STREET BANK AND TRUST COMPANY, EXCHANGE AGENT

<TABLE>
<S>                                            <C>
       by registered or certified mail:                by hand or overnight delivery:
     State Street Bank and Trust Company            State Street Bank and Trust Company
               Corporate Trust                            Two Avenue de Lafayette
             Post Office Box 778                   Fifth Floor, Corporate Trust Division
       Boston, Massachusetts 02110-0778               Boston, Massachusetts 02110-1724
          Attention: Meaghan Haight                      Attention: Meaghan Haight
</TABLE>

                           Telephone: (617) 662-1603
                           Facsimile: (617) 662-1452

(originals of all documents sent by facsimile should be sent promptly by
registered or certified mail, by hand, or by overnight delivery service.)

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE, OR
TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA FACSIMILE TO A NUMBER OTHER THAN
AS SET FORTH ABOVE, WILL NOT CONSTITUTE A VALID DELIVERY. THE INSTRUCTIONS
CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS
COMPLETED.

     The undersigned acknowledges that he or she has received and reviewed the
Prospectus, dated                , 2000 (the "Prospectus"), of Nuevo Energy
Company, a Delaware corporation (the "Company"), and this Letter of Transmittal
(the "Letter" or "Letter of Transmittal"), which together constitute the
Company's offer (the "Exchange Offer") to exchange, from the registered holders
(the "holders") thereof an aggregate principal amount of up to $150,000,000 of
the Company's 9 3/8% Senior Subordinated Notes due 2010, Series B (the "Exchange
Notes"), which have been registered under the Securities Act of 1933, as amended
(the "Securities Act"), pursuant to a Registration Statement of which the
Prospectus is a part, for a like principal amount of the issued and outstanding
9 3/8% Senior Subordinated Notes due 2010, Series A (the "Existing Notes") of
the Company. Terms used but not defined herein have the meaning given to them in
the Prospectus.

                                        1
<PAGE>   2

     For each Existing Note accepted for exchange, the holder of such Existing
Note will receive an Exchange Note having a principal amount equal to that of
the surrendered Existing Note. Accordingly, registered holders of Exchange Notes
on the relevant record date for the first interest payment date following the
consummation of the Exchange Offer will receive interest accruing from the most
recent date to which interest has been paid on the Existing Notes or, if no
interest has been paid, from September 26, 2000. Existing Notes accepted for
exchange will cease to accrue interest from and after the date of consummation
of the Exchange Offer. Holders whose Existing Notes are accepted for exchange
will not receive any payment in respect of accrued interest on such Existing
Notes otherwise payable on any interest payment date the record date for which
occurs on or after consummation of the Exchange Offer.

     This Letter is to be completed by a holder of Existing Notes either if
certificates for such Existing Notes are to be forwarded herewith or if a tender
is to be made by book-entry transfer to the account maintained by State Street
Bank and Trust Company (the "Exchange Agent") at The Depository Trust Company
("DTC") pursuant to the procedures set forth in "The Exchange
Offer -- Procedures for Tendering -- Existing Notes Held in Book-Entry Form"
section of the Prospectus and an Agent's Message is not delivered. Tenders by
book-entry transfer may also be made by delivering an Agent's Message in lieu of
this Letter. The term "Agent's Message" means a message, transmitted by DTC,
received by the Exchange Agent and forming a part of a Book-Entry Confirmation
(as defined below), which states that DTC has received an express acknowledgment
from the tendering holder, which acknowledgment states that such holder has
received and agrees to be bound by the Letter of Transmittal and that the
Company may enforce the Letter of Transmittal against such holder. Holders of
Existing Notes whose certificates are not immediately available, or who are
unable to deliver their certificates or confirmation of the book-entry tender of
their Existing Notes into the Exchange Agent's account at DTC (a "Book-Entry
Confirmation") and all other documents required by this Letter to the Exchange
Agent on or prior to the Expiration Date, must tender their Existing Notes
according to the guaranteed delivery procedures set forth in "The Exchange
Offer -- Guaranteed Delivery Procedures" section of the Prospectus. See
Instruction 1 on page 5. Delivery of documents to DTC does not constitute
delivery to the Exchange Agent.

     The undersigned has completed the appropriate boxes below and signed this
Letter to indicate the action the undersigned desires to take with respect to
the Exchange offer.

     The undersigned, by completing the box entitled "Description of 9 3/8%
Senior Subordinated Notes due 2010, Series A" below and signing this Letter,
will be deemed to have tendered the Existing Notes as set forth in such box
below.

               PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL AND
              THE PROSPECTUS CAREFULLY BEFORE COMPLETING THE BOXES

  THE INSTRUCTIONS INCLUDED WITH THIS LETTER OF TRANSMITTAL MUST BE FOLLOWED.
QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR ADDITIONAL COPIES OF THE PROSPECTUS
     AND THIS LETTER OF TRANSMITTAL MAY BE DIRECTED TO THE EXCHANGE AGENT.

                                        2
<PAGE>   3

     List below the Existing Notes to which this Letter relates. If the space
provided below is inadequate, the certificate numbers and principal amount of
Existing Notes should be listed on a separate signed schedule affixed hereto.

-------------------------------------------------------------------------------
      DESCRIPTION OF 9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES A
-------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  NAME AND ADDRESS OF REGISTERED                                   AGGREGATE             PRINCIPAL AMOUNT
  HOLDERS (AS IT/THEY APPEAR(S)                                 PRINCIPAL AMOUNT        TENDERED (MUST BE
      ON THE EXISTING NOTES)             CERTIFICATE             REPRESENTED BY       IN INTEGRAL MULTIPLES
    (PLEASE FILL IN IF BLANK)             NUMBERS(*)             CERTIFICATE(S)            OF $1,000)**
<S>                                <C>                      <C>                      <C>
-----------------------------------------------------------------------------------------------------------

                                        -------------------------------------------------------------------

                                        -------------------------------------------------------------------

                                        -------------------------------------------------------------------

                                        -------------------------------------------------------------------

                                        -------------------------------------------------------------------

                                        -------------------------------------------------------------------
                                        TOTAL
-----------------------------------------------------------------------------------------------------------
</TABLE>
     * Need not be completed by book-entry holders.

    ** Unless indicated in the column labeled "Principal Amount Tendered," any
       tendering holder of 9 3/8% Senior Subordinated Notes due 2010, Series A
       will be deemed to have tendered the entire aggregate principal amount
       represented by the column labeled "Aggregate Principal Amount Represented
       by Certificates(s)." If the space provided above is inadequate, list the
       certificate numbers and principal amounts an a separate signed schedule
       and affix the list to this Letter of Transmittal. The minimum permitted
       tender is $1,000 in principal amount of 9 3/8% Senior Subordinated Notes
       due 2010, Series A and all tenders must be in integral multiples of
       $1,000 in principal amount.
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

  [ ] CHECK HERE IF TENDERED EXISTING NOTES ARE ENCLOSED HEREWITH.
  [ ] CHECK HERE IF TENDERED EXISTING NOTES ARE BEING DELIVERED BY BOOK-ENTRY
      TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH DTC AND
      COMPLETE THE FOLLOWING (FOR USE BY ELIGIBLE INSTITUTIONS
      (AS HEREINAFTER DEFINED) ONLY):

    Name of Tendering Institution ----------------------------------------------
    Account Number -------------------------------------------------------------
    Transaction Code Number ----------------------------------------------------
  [ ] CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED DELIVERY IF
      TENDERED EXISTING NOTES ARE BEING DELIVERED PURSUANT TO A NOTICE OF
      GUARANTEED DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND COMPLETE THE
      FOLLOWING (FOR USE BY ELIGIBLE INSTITUTIONS ONLY):

    Name(s) of Registered Holder(s) --------------------------------------------
    Date of Execution of Notice of Guaranteed Delivery -------------------------
    Window Ticket Number (if available) ----------------------------------------
    Name of Institution which Guaranteed Delivery ------------------------------
    Account Number (if delivered by book-entry transfer)------------------------
    Transaction Code Number (if delivered by book-entry transfer) --------------
    Tendering Institution (if delivered by book-entry transfer) ----------------


                                        3
<PAGE>   4

--------------------------------------------------------------------------------

                         SPECIAL ISSUANCE INSTRUCTIONS
                         (SEE INSTRUCTIONS 3, 4 AND 5)

   To be completed ONLY (i) if certificates for Existing Notes not tendered,
   or Exchange Notes issued in exchange for Existing Notes accepted for
   exchange, are to be issued in the name of someone other than the
   undersigned, or (ii) if Existing Notes tendered by book-entry transfer
   which are not exchanged are to be returned by credit to an account
   maintained at the DTC other than the DTC Account Number set forth above.

   Issue certificate(s) to:

   Name
       ------------------------------------------
                    (PLEASE PRINT)

   Address
          ---------------------------------------

   ----------------------------------------------
                 (INCLUDE ZIP CODE)

   ----------------------------------------------
    (TAX IDENTIFICATION OR SOCIAL SECURITY NO.)

   Credit Existing Notes not exchanged and delivered by book-entry transfer
   to the DTC account set forth below:

   ----------------------------------------------
                 DTC ACCOUNT NUMBER

--------------------------------------------------------------------------------


--------------------------------------------------------------------------------

                         SPECIAL DELIVERY INSTRUCTIONS
                           (SEE INSTRUCTIONS 3 AND 4)

   To be completed ONLY if certificates for Existing Notes not tendered, or
   Exchange Notes issued in exchange for Existing Notes accepted for
   exchange, are to be delivered to someone other than the undersigned, or to
   the undersigned at an address other than that shown above.

   Mail to:

   Name
       -------------------------------------------
                    (PLEASE PRINT)

   Address
          ----------------------------------------

   -----------------------------------------------
                  (INCLUDE ZIP CODE)

   -----------------------------------------------
     (TAX IDENTIFICATION OR SOCIAL SECURITY NO.)


--------------------------------------------------------------------------------


                                        4
<PAGE>   5

                       SIGNATURES MUST BE PROVIDED BELOW.
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY.

Ladies and Gentlemen:

     1. Upon the terms and subject to the conditions of the Exchange Offer, the
undersigned hereby tenders to the Company the aggregate principal amount of
Existing Notes described above. Subject to, and effective upon, the acceptance
for exchange of the Existing Notes tendered hereby, the undersigned hereby
sells, assigns and transfers to, or upon the order of, the Company all right,
title and interest in and to such Existing Notes as are being tendered hereby.
The undersigned hereby irrevocably constitutes and appoints the Exchange Agent
its agent and attorney-in-fact (with full knowledge that the Exchange Agent also
acts as the agent of the Company) with respect to the tendered Existing Notes
with full power of substitution to (i) deliver certificates for such Existing
Notes, or transfer ownership of such Existing Notes on the account books
maintained by DTC, to the Company and deliver all accompanying evidences of
transfer and authenticity to, or upon the order of, the Company and (ii) present
such Existing Notes for transfer on the books of the Company and receive all
benefits and otherwise exercise all rights of beneficial ownership of such
Existing Notes, all in accordance with the terms of the Exchange Offer. The
power of attorney granted in this paragraph shall be deemed irrevocable and
coupled with an interest.

     2. The undersigned hereby represents, warrants and agrees that the
undersigned has full power and authority to tender, exchange, sell, assign and
transfer the Existing Notes tendered hereby and to acquire the Exchange Notes
issuable upon the exchange of such tendered Existing Notes and that the Company
will acquire good, marketable and unencumbered title thereto, free and clear of
all liens, restrictions, charges and encumbrances and not subject to any adverse
claims or proxies when the same are accepted by the Company.

     3. The undersigned also acknowledges that the Exchange Offer is being made
in reliance on interpretations by the staff of the Securities and Exchange
Commission (the "SEC"), as set forth in no-action letters issued to third
parties, that the Exchange Notes issued pursuant to the Exchange Offer in
exchange for the Existing Notes may be offered for resale, resold and otherwise
transferred by holders thereof, other than any such holder which is an
"affiliate" of the Company within the meaning of Rule 405 under the Securities
Act or a broker-dealer, without compliance with the registration and prospectus
delivery provisions of the Securities Act, provided that such Exchange Notes are
acquired in the ordinary course of such holders' business and such holders are
not participating, and have no arrangement with any person to participate, in a
distribution of such Exchange Notes; however, the SEC has not considered the
Exchange Offer in the context of a no-action letter and there can be no
assurance that the staff of the SEC would make a similar determination with
respect to the Exchange Offer as in other circumstances. If any holder is an
affiliate of the Company, is engaged in or intends to engage in, or has any
arrangement or understanding with any person to participate in, a distribution
of the Exchange Notes to be acquired pursuant to the Exchange Offer, such holder
(i) could not rely on the applicable interpretations of the staff of the SEC and
(ii) must comply with the registration and prospectus delivery requirements of
the Securities Act in connection with any resale transaction. If the undersigned
is not a broker-dealer, the undersigned represents that it is not engaged in,
and does not intend to engage in, a distribution of the Exchange Notes. If the
undersigned or person receiving the Exchange Notes is a broker-dealer that will
receive Exchange Notes for its own account, it represents that the Existing
Notes to be exchanged for the Exchange Notes were acquired by it as a result of
market-making activities or other trading activities and acknowledges and agrees
that it will deliver a prospectus meeting the requirements of the Securities Act
in connection with any resale of such Exchange Notes; however, by so
acknowledging and by delivering a prospectus, the undersigned broker-dealer will
not be deemed to admit that it is an "underwriter" within the meaning of the
Securities Act. Each such broker-dealer agrees that upon receipt of notice from
the Company of the occurrence of any event or the discovery of any fact which
makes any statement contained in the Prospectus untrue in any material respect
or which causes the Prospectus to omit to state a material fact necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading or the occurrence of certain other events

                                        5
<PAGE>   6

specified in the Registration Agreement, such broker-dealer will suspend the
sale of Exchange Notes pursuant to the Prospectus until the Company has amended
or supplemented the Prospectus to correct such misstatement or omission and has
furnished copies of the amended or supplemented Prospectus to such broker-dealer
or the Company has given notice that the sale of the Exchange Notes may be
resumed, as the case may be. The undersigned acknowledges that if the
undersigned is participating in the Exchange offer for the purpose of
distributing the Exchange Notes (i) the undersigned cannot rely on the position
of the staff of the SEC in the Morgan Stanley & Co., Inc. SEC No-Action Letter
(available June 5, 1991) and similar SEC no-action letters, and, in the absence
of an exemption therefrom, must comply with the registration and prospectus
delivery requirements of the Securities Act in connection with a secondary
resale transaction of the Exchange Notes, in which case the registration
statement must contain the selling security holder information required by Item
507 or Item 508, as applicable, of Regulation S-K of the Securities Act, and
(ii) a broker-dealer that delivers such a prospectus to purchasers in connection
with such resales will be subject to certain of the civil liability provisions
under the Securities Act and will be bound by the provisions of the Registration
Agreement (including certain indemnification rights and obligations).

     4. Unless the box under the heading "Special Registration Instructions" is
checked, the undersigned hereby represents and warrants that:

          (i) the Exchange Notes acquired pursuant to the Exchange Offer are
     being obtained in the ordinary course of business of the holder whether or
     not the undersigned;

          (ii) if the holder is not a broker-dealer, the holder is not
     participating in and does not intend to participate in a distribution
     (within the meaning of the Securities Act) of such Exchange Notes;

          (iii) the holder does not have an arrangement or understanding with
     any person to participate in the distribution (within the meaning of the
     Securities Act) of such Exchange Notes;

          (iv) the holder is not an "affiliate," as such term is defined under
     Rule 405 promulgated under the Securities Act, of the Company or, if the
     undersigned is an affiliate, it will comply with the registration and
     prospectus delivery requirements of the Securities Act to the extent
     applicable; and

          (v) if the holder is a broker-dealer that will receive Exchanges Notes
     for its own account in exchange for Existing Notes that were acquired as a
     result of market-making or other activities, that it will deliver a
     prospectus, as required by the Securities Act, in connection with any
     resale of the Existing Notes.

     5. The undersigned may, if, and only if, unable to make all of the
representations and warranties contained in clauses (i) through (iv) of Item 4,
above, elect to have its Existing Notes registered in the shelf registration
statement described in the registration agreement (the "Registration Agreement")
dated as of September 26, 2000, among the Company and Banc of America Securities
LLC, Banc One Capital Markets, Inc. and J.P. Morgan & Co. Such election may be
made by checking the box under "Special Registration Instructions" on page 7. By
making such election, the undersigned agrees, as a holder of Existing Notes or
Exchange Notes participating in a shelf registration, to indemnify and hold
harmless the Company, each of its directors, each of its officers who signs such
shelf registration statement and each person who controls the Company within the
meaning of either the Securities Act or the Securities Exchange Act of 1934, as
amended (the "Exchange Act") against any and all losses, claims, damages or
liabilities, joint or several, to which they or any of them may become subject
under the Securities Act, the Exchange Act or other Federal or state statutory
law or regulation, at common law or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon any untrue statement or alleged untrue statement of a material fact
contained in the shelf registration statement as originally filed or in any
amendment thereof, or any preliminary prospectus or prospectus, or in any
amendment thereof or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
agrees to reimburse each such indemnified party, as incurred, for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such loss,
                                        6
<PAGE>   7

claim, damage, liability or action; but only with respect to information
relating to the undersigned furnished in writing by or on behalf of the
undersigned expressly for use in the shelf registration statement, the
preliminary prospectus or prospectus or any amendments or supplements thereto.
Any such indemnification shall be governed by the terms and subject to the
conditions set forth in the Registration Agreement, including, without
limitation, the provisions regarding notice, retention of counsel, contribution
and payment of expenses set forth therein. The above summary of the
indemnification provision of the Registration Agreement is not intended to be
exhaustive and is qualified in its entirety by the Registration Agreement.

     6. The undersigned acknowledges that the Company's acceptance of properly
tendered Existing Notes pursuant to the procedures described under the caption
"The Exchange Offer -- Procedures for Tendering" in the Prospectus and in the
instructions hereto will constitute a binding agreement between the undersigned
and the Company upon the terms and subject to the conditions of the Exchange
Offer. The undersigned warrants and agrees to, upon request, execute and deliver
any additional documents deemed by the Company or the Exchange Agent to be
necessary or desirable to complete the exchange, sale, assignment and transfer
of the Existing Notes tendered hereby. All authority conferred or agreed to be
conferred in this Letter and every obligation of the undersigned hereunder shall
be binding upon the successors, assigns, heirs, executors, administrators,
trustees in bankruptcy and legal representatives of the undersigned and shall
not be affected by, and shall survive, the death or incapacity of the
undersigned. This tender may be withdrawn only in accordance with the procedures
set forth in "The Exchange Offer -- Withdrawal of Tenders" section of the
Prospectus. Unless otherwise indicated herein in the box entitled "Special
Issuance Instructions" above, please issue the Exchange Notes (and, if
applicable, substitute certificates representing Existing Notes for any Existing
Notes not exchanged) in the name of the undersigned or, in the case of a
book-entry delivery of Existing Notes, please credit the account indicated above
maintained at the DTC. Similarly, unless otherwise indicated under the box
entitled "Special Delivery Instructions" above, please send the Exchange Notes
(and, if applicable, substitute certificates representing Existing Notes for any
Existing Notes not exchanged) to the undersigned at the address(es) shown above
in the box entitled "Description of 9 3/8% Senior Subordinated Notes due 2010,
Series A."

                       SPECIAL REGISTRATION INSTRUCTIONS

     To be completed ONLY if (i) the undersigned satisfies the conditions set
forth in Item 5 above, (ii) the undersigned elects to register its Existing
Notes in the shelf registration statement described in the Registration
Agreement and (iii) the undersigned agrees to indemnify certain entities and
individuals as set forth in Item 5 above. (See Item 5.)

[ ]  BY CHECKING THIS BOX THE UNDERSIGNED HEREBY (i) REPRESENTS THAT IT IS
     UNABLE TO MAKE ALL OF THE REPRESENTATIONS AND WARRANTIES SET FORTH IN
     CLAUSES (i) THROUGH (iv) OF ITEM 4 ABOVE, (ii) ELECTS TO HAVE ITS EXISTING
     NOTES REGISTERED PURSUANT TO THE SHELF REGISTRATION STATEMENT DESCRIBED IN
     THE REGISTRATION AGREEMENT AND (iii) AGREES TO INDEMNIFY CERTAIN ENTITIES
     AND INDIVIDUALS IDENTIFIED IN, AND TO THE EXTENT PROVIDED IN, ITEM 5 ABOVE.

                                        7
<PAGE>   8

[ ]  CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL
     COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR SUPPLEMENTS
     THERETO.

Name:
          ----------------------------------------------------------------------

Address:
          ----------------------------------------------------------------------

          ----------------------------------------------------------------------

          ----------------------------------------------------------------------

                                        8
<PAGE>   9

                                PLEASE SIGN HERE
                    TO BE COMPLETED BY ALL TENDERING HOLDERS
                     (COMPLETE ACCOMPANYING SUBSTITUTE W-9)

<TABLE>
<S>                                                <C>
--------------------------------------------       --------------------------------------------, 2000
                     *                             Date

--------------------------------------------       --------------------------------------------, 2000
         *SIGNATURE(S) OF HOLDER(S)                Date
Area Code and Telephone Number:
-----------------------------------------------------------------------------------------------
</TABLE>

     THIS LETTER MUST BE SIGNED BY THE REGISTERED HOLDER(S) AS THE NAME(S)
APPEAR(S) ON THE CERTIFICATE(S) FOR THE EXISTING NOTES HEREBY TENDERED OR ON A
SECURITY POSITION LISTING, OR BY ANY PERSON(S) AUTHORIZED TO BECOME REGISTERED
HOLDER(S) BY ENDORSEMENTS AND DOCUMENTS TRANSMITTED HEREWITH. IF SIGNATURE IS BY
A TRUSTEE, EXECUTOR, ADMINISTRATOR, GUARDIAN, OFFICER OR OTHER PERSON ACTING IN
A FIDUCIARY OR REPRESENTATIVE CAPACITY, PLEASE SET FORTH FULL TITLE. SEE
INSTRUCTION 3.

Name(s):
--------------------------------------------------------------------------------
                             (PLEASE TYPE OR PRINT)

Capacity (Full Title):
--------------------------------------------------------------------------------

Address:
--------------------------------------------------------------------------------
                              (INCLUDING ZIP CODE)

                              SIGNATURE GUARANTEE
                         (IF REQUIRED BY INSTRUCTION 3)

Signature(s) Guaranteed by an Eligible Institution:

--------------------------------------------------------------------------------
                             (AUTHORIZED SIGNATURE)

--------------------------------------------------------------------------------
                                    (TITLE)

--------------------------------------------------------------------------------
                                 (NAME OF FIRM)

--------------------------------------------------------------------------------
                                   (ADDRESS)

--------------------------------------------------------------------------------
                        (AREA CODE AND TELEPHONE NUMBER)

Date:
--------------------------------------------------------------------------------

                                        9
<PAGE>   10

                                  INSTRUCTIONS

         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

     1. Delivery of this Letter and Existing Notes, Guaranteed Delivery
Procedures.  This Letter is to be completed by holders of Existing Notes either
if certificates for such Existing Notes are to be forwarded herewith or if
tenders are to be made pursuant to the procedures for delivery by book-entry
transfer set forth in "The Exchange Offer -- Procedures for
Tendering -- Existing Notes Held in Book-Entry Form" section of the Prospectus
and an Agent's Message is not delivered. Tenders by book-entry transfer may also
be made by delivering an Agent's Message in lieu of this Letter. The term
"Agent's Message" means a message, transmitted by DTC to and received by the
Exchange Agent and forming a part of a Book-Entry Confirmation, which states
that DTC has received an express acknowledgment from the tendering holder, which
acknowledgment states that such holder has received and agrees to be bound by
the Letter of Transmittal and that the Company may enforce the Letter of
Transmittal against such holder. Certificates for all physically tendered
Existing Notes, or Book-Entry Confirmation, as the case may be, as well as a
properly completed and duly executed Letter (or facsimile hereof or Agent's
Message in lieu thereof) and any other documents required by this Letter, must
be received by the Exchange Agent at the address set forth herein on or prior to
the Expiration Date, or the tendering holder must comply with the guaranteed
delivery procedures set forth below. Existing Notes tendered hereby must be in
denominations of principal amount of $1,000 and any integral multiple thereof.

     Holders whose certificates for Existing Notes are not immediately available
or who cannot deliver their certificates or a Book-Entry Confirmation and all
other required documents to the Exchange Agent on or prior to the Expiration
Date, may tender their Existing Notes pursuant to the guaranteed delivery
procedures set forth in "The Exchange Offer -- Guaranteed Delivery Procedures"
section of the Prospectus. Pursuant to such procedures, (i) such tender must be
made through an Eligible Institution; (ii) on or prior to 5:00 p.m., New York
City time, on the Expiration Date, the Exchange Agent must receive from such
Eligible Institution a properly completed and duly executed Notice of Guaranteed
Delivery, substantially in the form provided by the Company (by telegram, telex,
facsimile transmission, mail or hand delivery), setting forth the name and
address of the holder of Existing Notes, the certificates number or numbers of
the Existing Notes and the amount of Existing Notes tendered stating that the
tender is being made thereby and guaranteeing that within five business days
after the Expiration Date, the certificates for all physically tendered Existing
Notes, in proper form for transfer, or a Book-Entry Confirmation, as the case
may be, together with a Properly completed and duly executed Letter (or
facsimile thereof or Agent's Message in lieu thereof) with any required
signature guarantees and any other documents required by this Letter will be
deposited by the Eligible Institution with the Exchange Agent; and (iii) the
certificates for all physically tendered Existing Notes, in proper form for
transfer, or Book-Entry Confirmation, as the case may be, together with a
properly completed and duly executed Letter (or facsimile thereof or Agent's
Message in lieu thereof) with any required signature guarantees and all other
documents required by this Letter, are deposited by the Eligible Institution
within five business days after the Expiration Date. Alternatively, tender may
be made through DTC's Automated Tender Offer Program if (i) prior to 5:00 p.m.
New York City time, on the Expiration Date, the Exchange Agent receives an
agent's message from DTC stating that DTC has received an express acknowledgment
from the participant in DTC tendering the Existing Notes that they have received
and agree to be bound by the Notice of Guaranteed Delivery, and (ii) the
certificates for all physically tendered Existing Notes, in proper form for
transfer, or Book-Entry Confirmation, as the case may be, together with a
properly completed and duly executed Letter (or facsimile thereof or Agent's
Message in lieu thereof) with any required signature guarantees and all other
documents required by this Letter, are deposited by an Eligible Institution or
through DTC's Automated Tender Offer Program within five business days after the
Expiration Date.

     The method of delivery of this Letter, the Existing Notes and all other
required documents is at the option and sole risk of the tendering holders, and
the delivery will be deemed made only when actually received by the Exchange
Agent. If Existing Notes are sent by mail, it is suggested that the mailing be
registered mail, properly insured, with return receipt requested, or by an
overnight delivery service, and

                                       10
<PAGE>   11

made sufficiently in advance of the Expiration Date to permit delivery to the
Exchange Agent prior to 5:00 p.m., New York City time, on the Expiration Date.

     Only a holder may tender its Existing Notes in the Exchange Offer. Any
beneficial owner whose Existing Notes are registered in the name of his broker,
dealer, commercial bank, trust company or other nominee or are held in
book-entry form and who wishes to tender should contact the registered holder
promptly and instruct the registered holder to execute and deliver this Letter
of Transmittal on his behalf. If the beneficial owner wishes to tender on his
own behalf, the beneficial owner must, prior to completing and executing this
Letter of Transmittal and delivering his Existing Notes, either make appropriate
arrangements to register ownership of the Existing Notes in the owner's name or
obtain a properly completed bond power from the registered holder. The transfer
of record ownership may take considerable time.

     All questions as to the validity, form, eligibility (including time of
receipt), acceptance of tendered Existing Notes and withdrawal of tendered
Existing Notes will be determined by the Company in its sole discretion, which
determination will be final and binding. The Company reserves the absolute
right, in its sole and absolute discretion, to reject any and all Existing Notes
not properly tendered or any Existing Notes the Company's acceptance of which,
or exchange for, would, in the opinion of counsel for the Company, be unlawful.
The Company also reserves the absolute right, subject to applicable law, to
waive any of the conditions of the Exchange Offer or any irregularities or
conditions of tender as to particular Existing Notes whether or not similar
conditions or irregularities are waived in the case of other holders. The
Company's interpretation of the terms and conditions of the Exchange Offer
(including the instructions in this Letter of Transmittal) shall be final and
binding on all parties. Unless waived, any defects or irregularities in
connection with tenders of Existing Notes must be cured within such time as the
Company shall determine. Neither the Company, any affiliates or assigns of the
Company, the Exchange Agent nor any other person shall be under any duty to give
notification of defects or irregularities with respect to tenders of Existing
Notes, nor shall any of them incur any liability for failure to give such
notification. Tenders of Existing Notes will not be deemed to have been made
until such defects or irregularities have been cured or waived. Any Existing
Notes received by the Exchange Agent that are not properly tendered and as to
which the defects or irregularities have not been cured or waived will be
returned by the Exchange Agent to the tendering holders of Existing Notes,
unless otherwise provided in this Letter of Transmittal, as soon as practicable
following the Expiration Date. See "The Exchange Offer" section of the
Prospectus.

     2. Partial Tenders (Not Applicable to Note Holders Who Tender by Book-Entry
Transfer).  If less than all of the Existing Notes evidenced by a submitted
certificate are to be tendered, the tendering holder(s) should fill in the
aggregate principal amount of Existing Notes to be tendered in the box above
entitled "Description of 9 3/8% Senior Subordinated Notes due 2010, Series
A -- Principal Amount Tendered." A reissued certificate representing the balance
of nontendered Existing Notes will be sent to such tendering holder, unless
otherwise provided in the appropriate box of this Letter, promptly after the
Expiration Date. All of the Existing Notes delivered to the Exchange Agent will
be deemed to have been tendered unless otherwise indicated.

     3. Signatures on This Letter, Bond Powers and Endorsements, Guarantee of
Signatures.  If this Letter is signed by the holder of the Existing Notes
tendered hereby, the signature must correspond exactly with the name as written
on the face of the certificates or on a DTC security position listing without
any change whatsoever.

     If any tendered Existing Notes are owned of record by two or more joint
owners, all of such owners must sign this Letter.

     If any tendered Existing Notes are registered in different names on several
certificates, it will be necessary to complete, sign and submit as many separate
copies of this Letter as there are different registrations of certificates.

                                       11
<PAGE>   12

     When this Letter is signed by the registered holder or holders of the
Existing Notes specified herein and tendered hereby, no endorsements of
certificates or separate bond powers are required. If, however, the Exchange
Notes are to be issued, or any untendered Existing Notes are to be reissued, to
a person other than the registered holder, then endorsements of any certificates
transmitted hereby or separate bond powers are required. Signatures on such
certificate(s) must be guaranteed by an Eligible Institution.

     If this Letter is signed by a person other than the registered holder or
holders of any certificate(s) specified herein, such certificate(s) must be
endorsed or accompanied by appropriate bond powers, in either case signed
exactly as the name or names of the registered holder or holders appear(s) on
the certificate(s) and signatures on such certificate(s) must be guaranteed by
an Eligible Institution.

     If this Letter or any certificates or bond powers are signed by trustees,
executors, administrators, guardians, attorneys-in-fact, officers of
corporations or others acting in a fiduciary or representative capacity, such
persons should so indicate when signing, and, unless waived by the Company,
proper evidence satisfactory to the Company of their authority to so act must be
submitted.

     Endorsements on certificates for Existing Notes or signatures on bond
powers required by this Instruction 3 must be guaranteed by a financial
institution (including most banks, savings and loan associations and brokerage
houses) that is a participant in the Securities Transfer Agents Medallion
Program, the New York Stock Exchange Medallion Signature Program or the Stock
Exchanges Medallion Program (each, an "Eligible Institution").

     Signatures on this Letter need not be guaranteed by an Eligible
Institution, provided the Existing Notes are tendered: (i) by a registered
holder of Existing Notes (or by a participant in DTC whose name appears on a
security position listing as the owner) who has not completed the box entitled
"Special Issuance Instructions" or "Special Delivery Instructions" on this
Letter and Exchange Notes are being issued directly to such registered holder
(or deposited in the holder's account at DTC), or (ii) for the account of an
Eligible Institution.

     4. Special Issuance and Delivery Instructions.  Tendering holders of
Existing Notes should indicate in the applicable box the name and address to
which Exchange Notes issued pursuant to the Exchange Offer and/or substitute
certificates evidencing Existing Notes not exchanged are to be issued or sent,
if different from the name or address of the person signing this Letter. In the
case of issuance in a different name, the employer identification or social
security number of the person named must also be indicated. If no such
instructions are given, such Existing Notes not exchanged will be returned to
the name and address of the person signing this Letter. If a note holder is
tendering Existing Notes by book-entry transfer, any Existing Notes not
exchanged will be credited to such account maintained at the DTC.

     5. Transfer Taxes.  The Company will pay all transfer taxes, if any,
applicable to the transfer of Existing Notes to it or its order pursuant to the
Exchange Offer. If, however, Exchange Notes and/or substitute Existing Notes not
exchanged are to be delivered to, or are to be registered or issued in the name
of, any person other than the registered holder of the Existing Notes tendered
hereby, or if tendered Existing Notes are registered in the name of any person
other than the person signing this Letter, or if a transfer tax is imposed for
any reason other than the transfer of Existing Notes to the Company or its order
pursuant to the Exchange Offer, the amount of any such transfer taxes (whether
imposed on the registered holder or any other persons) will be payable by the
tendering holder. If satisfactory evidence of payment of such taxes or exemption
therefrom is not submitted herewith, the amount of such transfer taxes will be
billed to such tendering holder and the Exchange Agent will retain possession of
an amount of Exchange Notes with a face amount equal to the amount of such
transfer taxes due by such tendering holder pending receipt by the Exchange
Agent of the amount of such taxes.

     Except as provided in this Instruction 5, it will not be necessary for
transfer tax stamps to be affixed to the Existing Notes specified in this
Letter.

     6. Waiver of Conditions.  The Company reserves the absolute right to waive
satisfaction of any or all conditions to the Exchange Offer enumerated in the
Prospectus.

                                       12
<PAGE>   13

     7. No Conditional Tenders.  No alternative, conditional, irregular or
contingent tenders will be accepted. All tendering holders of Existing Notes, by
execution of this Letter or an Agent's Message in lieu thereof, shall waive any
right to receive notice of the acceptance of their Existing Notes for exchange.

     8. Mutilated, Lost, Stolen or Destroyed Existing Notes.  Any holder whose
Existing Notes have been mutilated, lost, stolen or destroyed should contact the
Exchange Agent at the address indicated above for further instructions.

     9. Withdrawal of Tenders.  Tenders of Existing Notes may be withdrawn at
any time prior to 5:00 p.m., Now York City time, on the Expiration Date. For a
withdrawal of a tender of Existing Notes to be effective, prior to 5:00 p.m.,
New York City time, on the Expiration Date, a written, telegraphic, telex or
facsimile transmission notice of withdrawal must be received by the Exchange
Agent at its address set forth above or you must comply with the appropriate
procedures for withdrawal under DTC's Automated Tender Offer Program. Any such
notice of withdrawal must (i) specify the name of the person having deposited
the Existing Notes to be withdrawn (the "Depositor"), (ii) identify the Existing
Notes to be withdrawn (including the certificate number or numbers, where
certificates for Existing Notes have been transmitted (or in the case of
Existing Notes transferred by book-entry transfer, the name and number of the
account at DTC to be credited) and principal amount of such Existing Notes),
(iii) be signed by the holder in the same manner as the original signature on
this Letter (including any required signature guarantees) or be accompanied by
documents of transfer sufficient to have the trustee under the Indenture
register the transfer of such Existing Notes into the name of the person
withdrawing the tender and (iv) specify the name in which any such Existing
Notes are registered, if different from that of the Depositor. All questions as
to the validity, form and eligibility (including time of receipt) of such
notices will be determined by the Company, in its sole discretion, whose
determination shall be final and binding on all parties. Neither the Company,
any affiliates or assigns of the Company, the Exchange Agent nor any other
person shall be under any duty to give any notification of any irregularities in
any notice of withdrawal or incur any liability for failure to give any such
notification. Any Existing Notes so withdrawn will be deemed not to have been
validly tendered for exchange for purposes of the Exchange Offer. Any Existing
Notes that have been tendered for exchange but which are not exchanged for any
reason will be returned to the holder thereof without cost to such holder as
soon as practicable after withdrawal, rejection of tender or termination of the
Exchange Offer. Properly withdrawn Existing Notes may be retendered by following
the procedures described above at any time on or prior to 5:00 p.m., New York
City time, on the Expiration Date.

     10. Requests For Assistance or Additional Copies.  Questions relating to
the procedure for tendering, as well as requests for additional copies of the
Prospectus, this Letter and other related documents may be directed to the
Exchange Agent, at the address and telephone number indicated above.

     11. Important Tax Information.  Under current federal income tax law, a
holder of Exchange Notes is required to provide the Company (as payor) with such
holder's correct taxpayer identification number ("TIN") on Substitute Form W-9
or otherwise establish a basis for exemption from backup withholding to prevent
backup withholding on any Exchange Notes delivered pursuant to the Exchange
Offer and any payments received in respect of the Exchange Notes. If a holder of
Exchange Notes is an individual, the TIN is such holder's social security
number. If the Company is not provided with the correct taxpayer identification
number, a holder of Exchange Notes may be subject to a $50 penalty imposed by
the Internal Revenue Service. Accordingly, each prospective holder of Exchange
Notes to be issued pursuant to Special Issuance Instructions should complete the
attached Substitute Form W-9. The Substitute Form W-9 need not be completed if
the box entitled Special Issuance Instructions has not been completed.

     Certain holders of Exchange Notes (including, among others, all
corporations and certain foreign individuals) are not subject to these backup
withholding and reporting requirements. Exempt prospective holders of Exchange
Notes should indicate their exempt status on Substitute Form W-9. A foreign
individual may qualify as an exempt recipient by submitting to the Company,
through the Exchange Agent, a properly completed Internal Revenue Service Form
W-8 (which the Exchange Agent will provide

                                       13
<PAGE>   14

upon request) signed under penalty of perjury, attesting to the holder's exempt
status. See the enclosed Guidelines for Certification of Taxpayer Identification
Number on Substitute Form W-9 for additional instructions.

     If backup withholding applies, the Company is required to withhold 31% of
any payment made to the holder of Exchange Notes or other payee. Backup
withholding is not an additional federal income tax. Rather, the federal income
tax liability of persons subject to backup withholding will be reduced by the
amount of tax withheld. If withholding results in an overpayment of taxes, a
refund may be obtained from the Internal Revenue Service. To prevent backup
withholding on any Exchange Notes delivered pursuant to the Exchange Offer and
any payments received in respect of the Exchange Notes, each prospective holder
of Exchange Notes to be issued pursuant to Special Issuance Instructions must
provide the Company, through the Exchange Agent, with either: (i) such
prospective holder's correct TIN by completing the form below, certifying that
the TIN provided on Substitute Form W-9 is correct (or that such prospective
holder is awaiting a TIN) and that (A) such prospective holder has not been
notified by the Internal Revenue Service that he or she is subject to backup
withholding as a result of a failure to report all interest or dividends or (B)
the Internal Revenue Service has notified such prospective holder that he or she
is no longer subject to backup withholding; or (ii) an adequate basis for
exemption.

     If the Existing Notes are in more than one name or are not in the name of
the actual owner, such holder should consult the W-9 Guidelines for information
on which TIN to report. If such holder does not have a TIN, such holder should
consult the W-9 Guidelines for instructions on applying for a TIN, check the box
in Part 2 of the Substitute Form W-9 and write "applied for" in lieu of its TIN.
Note: Checking this box and writing "applied for" on the form means that such
holder has already applied for a TIN or that such holder intends to apply for
one in the near future. If such holder does not provide its TIN to the Company
within 60 days, backup withholding will begin and continue until such holder
furnishes its TIN to the Company.

IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE HEREOF
(TOGETHER WITH THE ORIGINAL NOTES DELIVERED BY BOOK-ENTRY TRANSFER OR IN
ORIGINAL HARD COPY FORM) MUST BE RECEIVED BY THE EXCHANGE AGENT, OR THE NOTICE
OF GUARANTEED DELIVERY MUST BE RECEIVED BY THE EXCHANGE AGENT, PRIOR TO THE
EXPIRATION DATE.

                                       14
<PAGE>   15

                      TO BE COMPLETED BY TENDERING HOLDERS
                              (SEE INSTRUCTION 11)

<TABLE>
<S>                                <C>                                              <C>
----------------------------------------------------------------------------------------------------------------------
PAYOR'S NAME: NUEVO ENERGY COMPANY
----------------------------------------------------------------------------------------------------------------------
 SUBSTITUTE                         Part 1 -- PLEASE PROVIDE YOUR TIN IN THE BOX AT
 FORM W-9                           RIGHT AND CERTIFY BY SIGNING AND DATING BELOW.   -------------------------------
                                                                                          Social Security Number

 Department of the Treasury --                                                                      OR
 Internal Revenue Service
                                                                                     -------------------------------
                                                                                         Employer Identification
                                                                                                  Number
                                   -----------------------------------------------------------------------------------
                                    PART 2 -- CERTIFICATION -- UNDER PENALTIES OF
 PAYER'S REQUEST FOR                PERJURY, I CERTIFY THAT:                                    PART 3 --
 TAXPAYER IDENTIFICATION            (1) The number shown on this form is my correct            Awaiting TIN
 NUMBER (TIN)                           Taxpayer Identification Number (or I am
                                        waiting for a number to be issued to me)                   [ ]
                                        and
                                                                                    Please complete the certificate of
                                    (2) I am not subject to backup withholding       Awaiting Taxpayer Identification
                                        either because I have not been notified by            Number below.
                                        the Internal Revenue Service ("IRS") that I
                                        am subject to backup withholding as a result
                                        of failure to report all interest or
                                        dividends, or the IRS has notified me that
                                        I am no longer subject to backup
                                        withholding.
                                   -----------------------------------------------------------------------------------
                                    CERTIFICATION INSTRUCTIONS -- You must cross out item (2) in Part 2 above if you
                                    have been notified by the IRS that you are subject to backup withholding because
                                    of under reporting interest or dividends on your tax return. However, if after
                                    being notified by the IRS that you were subject to backup withholding you received
                                    another notification from the IRS stating that you are no longer subject to backup
                                    withholding, do not cross out such item (2).
----------------------------------------------------------------------------------------------------------------------

 Signature                                                              Date                                   , 2000
 ---------------------------------------------------------------------      ------------------------------------------

----------------------------------------------------------------------------------------------------------------------
</TABLE>

NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO EACH OFFER. PLEASE REVIEW
      THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
      NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
<PAGE>   16

              YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED
                     THE BOX IN PART 3 OF THE SUBSTITUTE FORM W-9
       -------------------------------------------------------------------------

                CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

           I certify under penalties of perjury that a taxpayer identification
      number has not been issued to me, and either (a) I have mailed or
      delivered an application to receive a taxpayer identification number to
      the appropriate Internal Revenue Service Center or Social Security
      Administration Office or (b) I intend to mail or deliver an application
      in the near future. I understand that if I do not provide a taxpayer
      identification number to the payor within 60 days, 31 percent of all
      reportable payments made to me thereafter will be withheld until I
      provide a number.

                                                                        , 2000
 ----------------------------------------------------  ------------------------
                Signature                              Date

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

                     CERTIFICATE FOR FOREIGN RECORD HOLDERS

      Under penalties of perjury, I certify that I am not a United States
 citizen or resident (or I am signing for a foreign corporation, partnership,
 estate or trust).

                                                                        , 2000
 ----------------------------------------------------  ------------------------
                Signature                              Date

--------------------------------------------------------------------------------
<PAGE>   17

             NOTICE OF GUARANTEED DELIVERY FOR NUEVO ENERGY COMPANY

     This form or one substantially equivalent hereto must be used to accept the
Exchange Offer of Nuevo Energy Company (the "Company") made pursuant to the
Prospectus, dated                     , 2000 (the "Prospectus"), if certificates
for the outstanding 9'% Senior Subordinated Notes due 2010 Series A (the
"Existing Notes") of the Company are not immediately available or if the
procedure for book-entry transfer cannot be completed on a timely basis or time
will not permit all required documents to reach the Exchange Agent prior to 5:00
p.m., New York City time, on the Expiration Date of the Exchange Offer. Such
form may be delivered or transmitted by telegram, telex, facsimile transmission,
mail or hand delivery to State Street Bank and Trust Company ("Exchange Agent")
as set forth below. Capitalized terms not defined herein have the meaning given
to them in the Prospectus.

STATE STREET BANK AND TRUST COMPANY, EXCHANGE AGENT

<TABLE>
<S>                                            <C>
       by registered or certified mail:                by hand or overnight delivery:
     State Street Bank and Trust Company            State Street Bank and Trust Company
               Corporate Trust                            Two Avenue de Lafayette
             Post Office Box 778                   Fifth Floor, Corporate Trust Division
       Boston, Massachusetts 02110-0778               Boston, Massachusetts 02110-1724
          Attention: Meaghan Haight                      Attention: Meaghan Haight
</TABLE>

                           Telephone: (617) 662-1603
                           Facsimile: (617) 662-1452

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE, OR
TRANSMISSION OF THIS INSTRUMENT VIA FACSIMILE TO A NUMBER OTHER THAN AS SET
FORTH ABOVE, WILL NOT CONSTITUTE A VALID DELIVERY.

     This form is not to be used to guarantee signatures. If a signature on a
Letter of Transmittal is required to be guaranteed by an Eligible Institution
under the instructions thereto, the signature guarantee must appear in the
applicable space provided in the signature box in the Letter of Transmittal.
<PAGE>   18

Ladies and Gentlemen:

     Upon the terms and conditions set forth in the Prospectus, the undersigned
hereby tenders to the Company the principal amount of Existing Notes set forth
below, pursuant to the guaranteed delivery procedure described in "The Exchange
Offer -- Guaranteed Delivery Procedures" section of the Prospectus.

 Principal Amount of Existing Notes Tendered:

 $
 ---------------------------------------------------

 Certificate Nos. (if available):

 -----------------------------------------------------
 Total Principal Amount Represented by Certificate(s):

 $
 ---------------------------------------------------

 If Existing Notes will be delivered to DTC, provide account number.

 Account Number:
 ---------------------------------

      All authority herein conferred or agreed to be conferred shall survive
 the death or incapacity of the undersigned and every obligation of the
 undersigned hereunder shall be binding upon the heirs, personal
 representatives, successors and assigns of the undersigned.

                                PLEASE SIGN HERE

 ------------------------------------------------------
 Signatures of Holder(s) or Authorized Signatory

 ------------------------------------------------------
 Signatures of Holder(s) or Authorized Signatory

                                               , 2000
 ---------------------------------------------
                     Date

                                               , 2000
 ---------------------------------------------
                     Date

      Must be signed by the holder(s) of Existing Notes as their name(s)
 appear(s) on certificates for Existing Notes or on a security position
 listing, or by person(s) authorized to become registered holder(s) by
 endorsement and documents transmitted with this Notice of Guaranteed Delivery.
 If signature is by a trustee, executor, administrator, guardian,
 attorney-in-fact, officer or other person acting in a fiduciary or
 representative capacity, such person must set forth his or her full title
 below. If Existing Notes will be delivered by book-entry transfer to DTC,
 provide account number.

 Please print name(s) and address(es)

 Name(s):
         -----------------------------------------------------------------------

 Capacity:
          ----------------------------------------------------------------------

 Address(es):
             -------------------------------------------------------------------

 Area Code and Telephone Number:
                                ------------------------------------------------

 Account Number:
                ----------------------------------------------------------------
<PAGE>   19

                              NUEVO ENERGY COMPANY

                               LETTER TO CLIENTS
                                      FOR
                           TENDER OF ALL OUTSTANDING
              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES A
                                IN EXCHANGE FOR
              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES B

        THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME,
                    ON             , 2000, UNLESS EXTENDED.
   EXISTING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME
        PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE.

To Our Clients:

     We are enclosing herewith a prospectus, dated                , 2000, of
Nuevo Energy Company, a Delaware corporation and a related letter of
transmittal, which together constitute Nuevo's offer to exchange its 9 3/8%
Senior Subordinated Notes due 2010, Series B, which have been registered under
the Securities Act of 1933, for a like principal amount of its issued and
outstanding 9 3/8% Senior Subordinated Notes due 2010, Series A (the "Existing
Notes"), upon the terms and subject to the conditions set forth in the
prospectus and letter of transmittal.

     The exchange offer is not conditioned upon any minimum number of Existing
Notes being tendered.

     We are the holder of record of Existing Notes held by us for your account.
A tender of such Existing Notes can be made only by us as the record holder and
pursuant to your instructions. The letter of transmittal is furnished to you for
your information only and cannot be used by you to tender Existing Notes held by
us for your account.

     We request instructions as to whether you wish to tender any or all of the
Existing Notes held by us for your account pursuant to the terms and conditions
of the prospectus and letter of transmittal. We also request that you confirm
that we may on your behalf make the representations and warranties contained in
the letter of transmittal.

                                            Very truly yours,

     PLEASE RETURN YOUR INSTRUCTIONS TO US IN THE ENCLOSED ENVELOPE WITH AMPLE
TIME TO PERMIT US TO SUBMIT A TENDER ON YOUR BEHALF PRIOR TO THE EXPIRATION
DATE.
<PAGE>   20

                              NUEVO ENERGY COMPANY

                        LETTER TO REGISTERED HOLDERS AND
                     DEPOSITORY TRUST COMPANY PARTICIPANTS
                                      FOR
                           TENDER OF ALL OUTSTANDING
              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES A
                                IN EXCHANGE FOR
              9 3/8% SENIOR SUBORDINATED NOTES DUE 2010, SERIES B

      THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
                                  , 2000, UNLESS EXTENDED.
   EXISTING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME
        PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE.

To Registered Holders and Depository Trust Company Participants:

     We are enclosing herewith the material listed below relating to our offer
to exchange our 9 3/8% Senior Subordinated Notes due 2010, Series B (the
"Exchange Notes"), which have been registered under the Securities Act of 1933,
for a like principal amount of our issued and outstanding 9 3/8% Senior
Subordinated Notes due 2010, Series A (the "Existing Notes"), upon the terms and
subject to the conditions set forth in our prospectus, dated
                    , 2000, and the related letter of transmittal.

     Enclosed herewith are copies of the following documents:

          1. Prospectus dated                     , 2000.

          2. Letter of Transmittal (together with accompanying Substitute Form
     W-9 Guidelines);

          3. Notice of Guaranteed Delivery;

          4. Letter which may be sent to your clients for whose account you hold
     Existing Notes in your name or in the name of your nominee; and

          5. Letter which may be sent from your clients to you with such
     client's instruction with regard to the exchange offer.

     We urge you to contact your clients promptly. Please note that the exchange
offer will expire on the expiration date unless extended.

     The exchange offer is not conditioned upon any minimum number of Existing
Notes being tendered.

     Pursuant to the letter of transmittal, each holder of Existing Notes will
make certain representations, including but not limited to, representations that
(i) the Exchange Notes acquired in exchange for Existing Notes pursuant to the
exchange offer are being acquired in the ordinary course of business of the
person receiving such Exchange Notes, whether or not the holder, (ii) if the
holder is not a broker-dealer, the holder is not participating in and does not
intend to participate in a distribution of the Exchange Notes, (iii) the holder
does not have any arrangement or understanding with any person to participate in
the distribution of Exchange Notes, (iv) neither the holder nor any such other
person is our "affiliate" within the meaning of Rule 405 under the Securities
Act, and (v) if the holder is a broker-dealer that will receive Exchange Notes
for its own account in exchange for Existing Notes that were acquired as a
result of market-making or other trading activities, it will deliver a
prospectus in connection with any resale of such Exchange Notes.
<PAGE>   21

     The enclosed Letter to Clients contains an authorization by the beneficial
owners of the Existing Notes for you to make the foregoing representations.

     The Company will not pay any fee or commission to any broker or dealer or
to any other persons, other than the Exchange Agent, in connection with the
solicitation of tenders of Existing Notes pursuant to the exchange offer.

     Additional copies of the enclosed material may be obtained from the
undersigned.

                                            Very truly yours,

                                            NUEVO ENERGY COMPANY
<PAGE>   22

                    INSTRUCTION TO REGISTERED HOLDER AND/OR
                      DEPOSITORY TRUST COMPANY PARTICIPANT

To Registered Holder and/or Depository Trust Company Participant:

     The undersigned hereby acknowledges receipt of the prospectus dated
            , 2000 of Nuevo Energy Company, a Delaware corporation and the
accompanying letter of transmittal, that together constitute Nuevo's offer to
exchange its 9 3/8% Senior Subordinated Notes due 2010, Series B (the "Exchange
Notes"), for all of its outstanding 9 3/8% Senior Subordinated Notes due 2010,
Series A (the "Existing Notes"). Terms used but not defined herein have the
meaning given to them in the prospectus.

     This will instruct you, the registered holder and/or Depository Trust
Company participant, as to the action to be taken by you relating to the
exchange offer with respect to the Existing Notes held by you for the account of
the undersigned.

     The aggregate face amount of the Existing Notes held by you for the account
of the undersigned is (FILL IN AMOUNT):

       $     of the 9 3/8% Senior Subordinated Notes due 2010, Series A.

     With respect to the Exchange Offer, the undersigned hereby instructs you
(CHECK APPROPRIATE BOX):

[ ] To TENDER the following Existing Notes held by you for the account of the
    undersigned (INSERT PRINCIPAL AMOUNT OF EXISTING NOTES TO BE TENDERED) (IF
    ANY);

       $     of the 9 3/8% Senior Subordinated Notes due 2010, Series A.

[ ] NOT to TENDER any Existing Notes held by you for the account of the
    undersigned.

     If the undersigned instructs you to tender the Existing Notes held by you
for the account of the undersigned, it is understood that you are authorized to
make, on behalf of the undersigned, and the undersigned by its signature below,
hereby makes to you, the representations and warranties contained in the letter
of transmittal that are to be made with respect to the undersigned as a
beneficial owner, including but not limited to the representations, that (i) the
Exchange Notes acquired in exchange for Existing Notes pursuant to the exchange
offer are being acquired in the ordinary course of business of the person
receiving such Exchange Notes, whether or not the undersigned, (ii) if the
undersigned is not a broker-dealer, the undersigned is not participating in and
does not intend to participate in a distribution of the Exchange Notes, (iii)
the undersigned does not have any arrangement or understanding with any person
to participate in the distribution of Exchange Notes, (iv) neither the
undersigned nor any such other person is an "affiliate," within the meaning of
Rule 405 under the Securities Act, of Nuevo Energy Company, and (v) if the
undersigned is a broker-dealer that will receive Exchange Notes for its own
account in exchange for Existing Notes that were acquired as a result of
market-making or other trading activities, it will deliver a prospectus in
connection with any resale of such Exchange Notes.

                                   SIGN HERE

Name of beneficial owner(s):
                             ---------------------------------------------------
                                   Signature(s)

Name(s):
         -----------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
                                 (Please Print)

Address:
         -----------------------------------------------------------------------

Telephone number:
                  --------------------------------------------------------------

Taxpayer Identification or Social Security Number:
                                                   -----------------------------

Date:
      --------------------------------------------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission