Exhibit 8.1


                              Jenkens & Gilchrist                  AUSTIN, TEXAS
                          A PROFESSIONAL CORPORATION              (512) 499-3800
                                                               CHICAGO, ILLINOIS
                                 1401 MCKINNEY                    (312) 425-3900
                                   SUITE 2700                      DALLAS, TEXAS
                              HOUSTON, TEXAS 77010                (214) 855-4500
                                 (713) 951-3300 LOS ANGELES, CALIFORNIA
                            FACSIMILE (713) 951-3314 (310) 820-8800
                                                              NEW YORK, NEW YORK
      Donald W. Brodsky          www.jenkens.com                  (212) 704-6000
       (713) 951-3341                                       PASADENA, CALIFORNIA
    dbrodsky@jenkens.com                                          (626) 578-7400
                                                              SAN ANTONIO, TEXAS
                                                                  (210) 246-5000
                                                                WASHINGTON, D.C.
                                                                  (202) 326-150

                               Jenkens & Gilchrist
                           A PROFESSIONAL CORPORATION



                                 June 23, 2004



Swift Energy Company
16825 Northchase Drive, Suite 400
Houston, Texas  77060

Ladies and Gentlemen:

     We have  acted as special  tax  counsel to Swift  Energy  Company,  a Texas
corporation (the "Company"),  in connection with its preparation of a prospectus
supplement ("Prospectus  Supplement") dated June 9, 2004 to the prospectus dated
May 11, 2004 of the Company  ("Prospectus")  which was filed with the Securities
and  Exchange  Commission  pursuant to Rule  424(b),  relating  to  Registration
Statement No. 333-112041 on Form S-3 (the "Registration Statement") with respect
to the  Company's  issuance of its 7 5/8% Senior Notes due 2011 (the "Notes") in
the principal amount of $150,000,000. Except as otherwise indicated, capitalized
terms used herein  shall have the  meanings  assigned to them in the  Prospectus
Supplement.

     Set  forth  below  is  our  opinion,  together  with  the  representations,
assumptions and documents upon which we have relied in rendering our opinion and
any limitations on our opinion.

     A. Documents Reviewed

     In connection with the opinion  rendered below, we have reviewed and relied
upon the following documents:

          1.   the Registration Statement;

          2.   the Prospectus Supplement;

          3.   the Prospectus;

          4.   the form of Indenture  and form of First  Supplemental  Indenture
               proposed to be entered  into  between the Company and Wells Fargo
               Bank, NA, as Trustee, pertaining to the Notes;





June 23, 2004
Page 2


          5.   a  Company's  Officer's  Certificate  relating to the tax opinion
               dated June 23, 2004 (the "Officer's Certificate"); and

          6.   such other  documents  as we deemed  necessary  for  purposes  of
               rendering the opinion.

     B. Representations

     In connection with the opinion  rendered below, we have reviewed and relied
upon the factual representations set forth in the Officer's Certificate.

     C. Assumptions

     In connection with the opinion rendered below, we have assumed:

     1. that all signatures on all documents  submitted to us are genuine,  that
all  documents  submitted to us as originals are  authentic,  that all documents
submitted to us as copies are accurate,  that all information submitted to us is
accurate and complete,  and that all persons executing and delivering  originals
or copies of documents  examined by us are competent to execute and deliver such
documents;

     2. that the issuance,  description of and transactions  regarding the Notes
described in the  Registration  Statement and the Prospectus  Supplement will be
timely  consummated as  contemplated  in the  Prospectus  Supplement and without
waiver of any material provision thereof; and

     3. the Officer's  Certificate is true and accurate in all material respects
as of this date.

     D. Opinion

     Based  solely  upon the  documents  and  assumptions  set  forth  above and
conditioned   upon  the   initial  and   continuing   accuracy  of  the  factual
representations set forth in the Officer's Certificate as of the date hereof, it
is our opinion that the  descriptions  of the law  contained  in the  Prospectus
Supplement under the caption  "Certain U.S.  Federal Income Tax  Considerations"
are  correct  in all  material  respects  and  that  the  discussion  thereunder
represents an accurate  summary of (i) certain  material  United States  federal
income tax consequences of the purchase,  ownership and disposition of the Notes
by an initial  purchaser who is a U.S.  Holder and who acquires the Notes in the
initial offering at the public offering price set forth on the cover page of the






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June 23, 2004
Page 3


Prospectus  Supplement;  and; (ii) certain material United States federal income
and estate tax  consequences  of the purchase,  ownership and disposition of the
Notes by an initial  purchaser  who is a Non-U.S.  Holder and who  acquires  the
Notes in the intial offering at the public offering price set forth on the cover
page of the Prospectus Supplement.

     E. Limitations

     1. Except as otherwise  indicated,  the opinion contained in this letter is
based  upon the Code  and its  legislative  history,  the  Treasury  regulations
promulgated  thereunder (the  "Regulations"),  judicial  decisions,  and current
administrative  rulings and practices of the Internal Revenue Service, all as in
effect on the date of this letter.  These  authorities may be amended or revoked
at any time.  Any such  changes may or may not be  retroactive  with  respect to
transactions  entered into or  contemplated  prior to the effective date thereof
and could significantly  alter the conclusions reached in this letter.  There is
no assurance that  legislative,  judicial,  or  administrative  changes will not
occur in the future.  We assume no obligation to update or modify this letter to
reflect any developments that may occur after the date of this letter.

     2. The opinion  expressed herein  represents  counsel's best legal judgment
and is not  binding  upon the  Internal  Revenue  Service  or the  courts and is
dependent upon the accuracy and  completeness of the documents we have reviewed,
and the  assumptions  made  and the  factual  representations  contained  in the
Officer's  Certificate.  To the extent that any of the  factual  representations
provided  to us in the  Officer's  Certificate  are with  respect to matters set
forth  in the  Code or the  Treasury  Regulations,  we have  reviewed  with  the
individuals  making such factual  representations  the relevant portions thereof
and are reasonably  satisfied that such  individuals  understand such provisions
and are  capable of making  such  factual  representations.  We have not made an
independent  investigation  of  the  assumptions  set  forth  above,  the  facts
contained in the documents, or the facts set forth in the Officer's Certificate,
Registration  Statement,  or  Prospectus  Supplement.  No facts have come to our
attention,   however,   that  would  cause  us  to  question  the  accuracy  and
completeness  of such  assumptions,  facts or documents  in a material  way. Any
material inaccuracy or incompleteness in these documents, assumptions or factual
representations could adversely affect the opinion stated herein.

     3. We are  expressing  an opinion only as to those  matters  expressly  set
forth in Section D above.  No opinion should be inferred as to any other matters
and this opinion may not be relied upon except with respect to the  consequences
specifically  discussed herein. This opinion does not address the various state,
local or foreign tax consequences  related to the offering or other transactions
contemplated by the Registration Statement. In addition, no opinion is expressed
as to any U.S. federal income tax consequences of any other transactions related
to the Notes except as specifically set forth herein.





June 23, 2004
Page 4


     4. This opinion  letter is issued  solely for the benefit of the Company in
connection with the Prospectus Supplement and no other person or entity may rely
hereon  without our express  written  consent.  We are  furnishing  this opinion
solely in our  capacity  as special  tax counsel to the  Company.  This  opinion
letter may be filed with the Securities and Exchange Commission by virtue of the
filing of a Form 8-K by the Company. Furthermore, we consent to the reference to
Jenkens & Gilchrist, a Professional Corporation, under the caption Legal Matters
in the Prospectus  Supplement.  In giving this consent,  we do not thereby admit
that we are within the  category  of persons  whose  consent is  required  under
Section  7 of  the  Securities  Act of  1933,  as  amended,  or  the  rules  and
regulations of the Commission promulgated thereunder.

                                        Very truly yours,

                                        JENKENS & GILCHRIST,
                                        a Professional Corporation



                                        By: /s/Andrius R. Kontrimas
                                           -------------------------------------
                                           Andrius R. Kontrimas,
                                           Authorized Signatory


cc:      Ms. Lisa Rossmiller [Firm]