EXHIBIT 4.7


                          SECOND SUPPLEMENTAL INDENTURE

     THIS SECOND  SUPPLEMENTAL  INDENTURE  dated as of September  28, 2004 (this
"Supplemental  Indenture"),  is  entered  into  by  and  among  Pioneer  Natural
Resources  Company,  a  Delaware  corporation  ("Pioneer"),   Pioneer  Evergreen
Properties, LLC, a Texas limited liability company (the "Company"), and Wachovia
Bank,  National  Association,  the  successor  to First Union  National  Bank, a
national banking association, as trustee (the "Trustee"). Capitalized terms used
herein and not  otherwise  defined have the meanings set forth in the  Indenture
referred to below.

                                    RECITALS

     A. Pursuant to the terms of that certain Agreement and Plan of Merger dated
as of May 3,  2004,  by and among  Pioneer,  BC Merger  Sub,  Inc.,  a  Colorado
corporation  and a  wholly-owned  subsidiary  of  Pioneer  ("Merger  Sub"),  and
Evergreen Resources, Inc., a Colorado corporation ("Evergreen"),  Merger Sub has
merged with and into Evergreen with Evergreen as the surviving corporation and a
wholly-owned subsidiary of Pioneer (the "First Merger").

     B. As a result of the First Merger,  the 4.75% Senior Convertible Notes due
2021 of Evergreen (the "Securities"),  issued pursuant to that certain Indenture
dated as of December  18,  2001,  by and between  Evergreen  and the Trustee (as
heretofore  amended and supplemented,  the "Indenture") will be convertible into
the  Evergreen  Common  Stock  Consideration  Units,  as  provided  in the First
Supplemental Indenture by and among Pioneer,  Evergreen and Trustee, dated as of
September 28, 2004.

     C.  Immediately  following the First Merger,  Evergreen has entered into an
Agreement  and Plan of Merger with the Company  dated as of September  28, 2004,
pursuant  to which  Evergreen  has merged  with and into the  Company,  with the
Company  as the  surviving  entity  (collectively  with the  First  Merger,  the
"Merger").

     D.  Pursuant  to Article VII of the  Indenture,  upon  consummation  of the
Merger, the Company shall expressly assume, by supplemental indenture,  executed
and delivered to the Trustee all  obligations  of Evergreen  under the Indenture
and the Securities and the Company will succeed to, and be substituted  for, and
may exercise  every right and power of  Evergreen  under the  Indenture  and the
Securities.

     E. In accordance with Section 11.1(a) of the Indenture, the Company and the
Trustee are  authorized  to execute and deliver this  Supplemental  Indenture to
amend  the  Indenture  to  provide  for the  assumption  by the  Company  of the
obligations of Evergreen  under the Indenture and the Securities  without notice
to or the consent of any Securityholder.

     F. The  Company  desires and has  requested  the Trustee to join with it in
entering  into this  Supplemental  Indenture  for the  purpose of  amending  the
Indenture to provide for the  assumption  by the Company of the  obligations  of
Evergreen under the Indenture and the Securities.

     G. The Company and Pioneer have duly  authorized the execution and delivery
of this Supplemental Indenture.






                                   AGREEMENTS

     NOW,  THEREFORE,  in  consideration of the foregoing and for other good and
valuable  consideration,  the  receipt  of which  is  hereby  acknowledged,  the
Company,  Pioneer, and the Trustee mutually covenant and agree for the equal and
ratable benefit of the Holders of the Securities as follows:

     Section 1.  Confirmation  of  Original  Indenture.  Except as  amended  and
supplemented hereby, the Indenture is hereby ratified,  confirmed and reaffirmed
in all respects.  The Indenture and this  Supplemental  Indenture shall be read,
taken and construed as one and the same instrument.

     Section 2. Successor Company Substituted. In accordance with Article VII of
the Indenture,  upon  consummation of the Merger,  the Company shall succeed to,
and be  substituted  for, and may exercise  every right and power of,  Evergreen
under the  Securities  and the Indenture  with the same effect as if the Company
had been named therein as Evergreen.

     Section 3. Assumption of Obligations.  Upon consummation of the Merger, the
Company hereby assumes all of the  obligations of Evergreen  under the Indenture
and the Securities with the same effect as if the Company had been named therein
as Evergreen.

     Section 4. Miscellaneous.

            (a) Execution of Supplemental Indenture. This Supplemental Indenture
is executed and shall be construed as an indenture supplemental to the Indenture
and,  as provided in the Indenture,  this Supplemental Indenture forms a part of
the Indenture.

            (b) NEW YORK LAW TO  GOVERN. THE INTERNAL  LAW OF  THE STATE  OF NEW
YORK SHALL  GOVERN  AND BE USED TO  CONSTRUE  THIS  SUPPLEMENTAL  INDENTURE  BUT
WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT
THAT THE  APPLICATION  OF THE LAWS OF  ANOTHER  JURISDICTION  WOULD BE  REQUIRED
THEREBY.

            (c) Counterparts.  The parties may sign any number of copies of this
Supplemental Indenture.  Each signed copy shall be an original,  but all of them
together represent the same agreement.

            (d) Effect  of  Headings.   The  Section  headings  herein  are  for
convenience only and shall not affect the construction hereof.

            (e) The Trustee.  The Trustee shall not be responsible in any manner
whatsoever for or in respect of the validity or sufficiency of this Supplemental
Indenture or for  or in respect of the  recitals contained herein,  all of which
recitals are made solely by Pioneer and the Company.


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                                        2




     IN WITNESS  WHEREOF,  the parties  hereto  have  caused  this  Supplemental
Indenture to be duly executed as of the date first above written.

       Dated:  September 28, 2004

                                          PIONEER EVERGREEN PROPERTIES, LLC

                                          By:   /s/ Richard P. Dealy
                                                -------------------------------
                                                Name:  Richard P. Dealy
                                                Title: Manager



                                          PIONEER NATURAL RESOURCES COMPANY

                                          By:   /s/ Richard P. Dealy
                                                -------------------------------
                                                Name:  Richard P. Dealy
                                                Title: Vice President


                                          WACHOVIA BANK, NATIONAL ASSOCIATION,
                                            as Trustee

                                          By:   /s/ Doug Milner
                                                -------------------------------
                                                Authorized Signatory
















               Signature Page to the Second Supplemental Indenture
                        (4.75% Senior Convertible Notes)