[Jenkens & Gilchrist letterhead]

                                 July __, 2001

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


Ladies and Gentlemen:

     We have  acted as  securities  counsel  to Swift  Energy  Company,  a Texas
corporation  ("Swift"),  in connection with Registration Statement No. 333-64692
on Form S-3 (the  "Registration  Statement"),  filed  with  the  Securities  and
Exchange  Commission  (the  "Commission")  under the  Securities Act of 1933, as
amended (the "Act"),  by Swift which relates to common stock, par value $.01 per
share, of Swift ("Common Stock"),  preferred stock, par value $.01 per share, of
Swift  ("Preferred  Stock"),  unsecured notes,  debentures or other evidences of
indebtedness of Swift ("Debt Securities"),  shares of Preferred Stock, which may
be issued in the form of depositary shares  ("Depositary  Shares")  evidenced by
depositary  receipts,  and warrants to purchase  Common Stock or Preferred Stock
("Warrants")  which may be issued and sold by Swift,  and Common  Stock owned by
certain of its shareholders  ("Selling  Shareholders")  which may be sold by the
Selling Shareholders,  in each case from time to time pursuant to Rule 415 under
the Act for an aggregate  initial  offering price (as to all such  Securities as
may be sold by Swift and the Selling  Shareholders) not to exceed  $350,000,000.
The Common  Stock,  Preferred  Stock,  Debt  Securities,  Depositary  Shares and
Warrants will be referred to herein collectively as the "Securities."

     In  connection  with this  opinion,  we have  examined  and relied upon the
accuracy  of  original,  certified  or  photographic  copies  of  such  records,
agreements,  certificates  and other  documents  as we have deemed  necessary or
appropriate to enable us to render the opinions set out below, including (i) the
Registration  Statement,  (ii) Swift's Articles of Incorporation and Bylaws; and
(iii) copies of resolutions of Swift's board of directors ("Board")  authorizing
the filing of the  Registration  Statement.  In all such  examinations,  we have
assumed  the  genuineness  of all  signatures,  the legal  capacity  of  natural
persons,  the  authenticity of all documents  submitted to us as originals,  the
conformity to original  documents of all documents  submitted to us as certified
or  photostatic  copies and the  authenticity  of the  originals  of such latter
documents.  In conducting our examination of documents executed by parties other
than Swift, we have assumed that such parties had the power, corporate or other,
to enter into and perform all  obligations  thereunder and have also assumed the
due authorization by all requisite action, corporate or other, and execution and






Swift Energy Company
July  , 2001
Page 2



delivery by such parties of such  documents and that such  documents  constitute
valid and binding obligations of such parties.


     We  have  also  assumed  that  (i)  the  Registration  Statement,  and  any
amendments  thereto  (including  post-effective  amendments)  will  have  become
effective  under  the Act,  (ii) a  proper  prospectus  supplement  ("Prospectus
Supplement")  will have been prepared and filed with the  Commission  describing
the Securities  offered thereby,  (iii) all Securities issued will be issued and
sold in compliance with applicable  federal and state securities laws and solely
in  the  manner  stated  in  the  Registration  Statement  and  the  appropriate
Prospectus  Supplement,   (iv)  the  aggregate  principal  amount  of  any  Debt
Securities or series of Debt Securities  issued and sold by Swift will not be in
excess of $350,000,000  (v) at the time of any offering or sale of any shares of
Common Stock or Preferred Stock, Swift will have such number of shares of Common
Stock or Preferred Stock authorized or created and available for issuance as may
be  offered  and  sold and as are  issuable  upon the  conversion,  exchange  or
exercise of any  Securities  that may be offered and sold,  (vi) any  definitive
purchase,  underwriting  or similar  agreement  with  respect to any  Securities
offered will have been duly  authorized  and validly  executed and  delivered by
Swift and the  other  parties  thereto,  (vii)  there  shall be no change in law
affecting the validity of any of the Securities (between the date hereof and the
date of  issuance  and sale of such  Securities),  and  (viii)  all  parties  to
agreements  involving the issuance or sale of the Securities  will perform their
obligations thereunder in compliance with the terms of such documents.


     Based upon the foregoing, and subject to the assumptions,
qualifications and limitations stated herein, we are of the opinion that:

    1.    The  Common  Stock  that  may be  offered  and  sold  by  the  Selling
          Shareholders  and that is covered  by the  Registration  Statement  is
          legally issued, fully paid and nonassessable.

    2.    With respect to Common  Stock that may be issued,  offered and sold by
          Swift,  when (i) the  Board  (or a  committee  thereof)  has taken all
          necessary  corporate  action to approve the  issuance  and sale of the
          Common  Stock to be  issued,  the terms of the  offering  thereof  and
          related matters, (ii) such shares of Common Stock have been issued and
          delivered  in  accordance   with  the  provisions  of  any  applicable
          definitive  purchase or  underwriting  or other  agreement  binding on
          Swift and the terms approved by the Board (or a committee thereof) and
          (iii)  Swift  has  received  payment  of  the  cash  or  other  lawful
          consideration  provided  to  be  paid  for  the  Common  Stock,  which
          consideration  shall  not be less  than the par  value  thereof,  such
          shares  of  Common  Stock  will be  legally  issued,  fully  paid  and
          nonassessable.






Swift Energy Company
July  , 2001
Page 3



    3.    With  respect to Preferred  Stock,  when (i) the Board (or a committee
          thereof)  has taken all  necessary  corporate  action to  approve  the
          issuance  and terms of such  Preferred  Stock that may be issued,  the
          terms of the offering thereof and related matters,  (ii) a Certificate
          of  Designation  under,  or  an  amendment  of,  Swift's  Articles  of
          Incorporation setting forth the powers, designations,  preferences and
          relative,  participating,  optional  or other  special  rights  of the
          Preferred  Stock  and  the  qualifications  and  restrictions  of such
          preferences  and/or  rights has been filed with the Secretary of State
          of Texas,  (iii) such shares of  Preferred  Stock have been issued and
          delivered  in  accordance   with  the  provisions  of  any  applicable
          definitive  purchase,  underwriting or similar agreement and the terms
          approved  by the Board (or a  committee  thereof),  and (iv) Swift has
          received payment of the cash or other lawful consideration provided to
          be paid for the Preferred Stock, which consideration shall not be less
          than the par value  thereof,  such shares of  Preferred  Stock will be
          legally issued, fully paid and nonassessable.

    4.    With respect to Debt  Securities,  when (i) the  applicable  Indenture
          relating  to the Debt  Securities  has been duly  qualified  under the
          Trust  Indenture Act of 1939,  as amended,  (ii) the Trustee that is a
          party to the Indenture  relating to such Debt Securities has been duly
          qualified and has filed with the Commission a Statement of Eligibility
          of Trustee on Form T-1 for the Debt Securities,  (iii) the Board (or a
          committee thereof) has taken all necessary corporate action to approve
          the issuance and terms of such Debt Securities, (iv) the terms of such
          Debt  Securities  and of  their  issuance  and  sale  have  been  duly
          established in conformity  with the applicable  Indenture so as not to
          violate any  applicable  law or result in a default under or breach of
          any  agreement  or  instrument  binding upon Swift and so as to comply
          with  any  requirements  or  restriction   imposed  by  any  court  or
          governmental  body having  jurisdiction  over Swift, (v) the Indenture
          has been  duly  authorized,  executed  and  delivered  by the  parties
          thereto,  (vi) the certificates  representing the Debt Securities have
          been  duly  executed,  countersigned,   registered  and  delivered  in
          accordance with the Indenture and any applicable  definitive purchase,
          underwriting  or  similar  agreement,  and (vii)  Swift  has  received
          payment  of  the  consideration  provided  to be  paid  for  the  Debt
          Securities,  such Debt Securities  will  constitute  valid and legally
          binding obligations of Swift.

    5.    With  respect  to the  Depositary  Shares,  when (i) the  Board  (or a
          committee thereof) has taken all necessary corporate action to approve
          the creation of and issuance and terms of the Depositary  Shares,  the
          terms of the offering  thereof and related  matters,  (ii) the deposit
          agreement  relating to the  Depository  Shares in which the depositary
          thereunder is duly appointed (the "Deposit  Agreement")  has been duly







Swift Energy Company
July  , 2001
Page 4



          authorized  and validly  executed and  delivered by Swift,  (iii) such
          Depositary  Shares have been issued and delivered in  accordance  with
          the provisions of the Deposit  Agreement,  the terms of any applicable
          definitive purchase  underwriting or similar agreement,  and the terms
          approved  by the Board (or a  committee  thereof),  and (iv) Swift has
          received  payment  of the  consideration  provided  to be paid for the
          Depositary  Shares,  such  Depositary  Shares will be legally  issued,
          fully paid and nonassessable.

    6.    With  respect  to the  Warrants,  when (i) the Board  (or a  committee
          thereof)  has taken all  necessary  corporate  action to  approve  the
          creation of and issuance and terms of the  Warrants,  the terms of the
          offering  thereof and related  matters  (including any Common Stock or
          Preferred  Stock  issued  upon  exercise  of the  Warrants),  (ii) any
          Warrant Agreement  entered into in connection  therewith (the "Warrant
          Agreement")  has  been  duly  authorized  and  validly   executed  and
          delivered by Swift,  (iii) the Warrants or  certificates  representing
          the Warrants have been duly  executed,  countersigned,  registered and
          delivered in accordance with the applicable  Warrant Agreement and any
          applicable definitive purchase, underwriting or similar agreement, and
          the terms  approved  by the Board (or a  committee  thereof)  and (iv)
          Swift has received  payment of the  consideration  provided to be paid
          for the Warrants, such Warrants will be legally issued, fully paid and
          nonassessable   and  will   constitute   valid  and  legally   binding
          obligations of Swift.

    7.    With respect to  Preferred  Stock,  Common  Stock and Debt  Securities
          ("Underlying  Securities")  that  may be  issued  on  the  conversion,
          exchange  or  exercise  of any  Securities,  when  (i) the  Underlying
          Security is issued in  accordance  with the term of the  Security  for
          which it is  exchangeable,  exercisable or convertible,  including the
          receipt by Swift of any additional  consideration to be paid therefor,
          and  (ii)  with  respect  to  Underlying   Securities  that  are  Debt
          Securities,  the  conditions  set  forth  in  paragraph  4  above,  as
          applicable, are satisfied,  shares of Preferred Stock and Common Stock
          that are issued as Underlying Securities will be legally issued, fully
          paid  and  nonassessable  and  Debt  Securities  that  are  issued  as
          Underlying  Securities  will  constitute  valid  and  legally  binding
          obligations of Swift.

     The  opinions set forth in  paragraphs  4, 6 and 7 above are subject to the
effects  of  bankruptcy,  insolvency,  fraudulent  conveyance,   reorganization,
moratorium  and other  similar laws relating to or affecting  creditors'  rights
generally,  general equitable  principles (whether considered in a proceeding in
equity or at law) and an implied covenant of good faith and fair dealing.

     The  foregoing  opinions  are limited to the laws of the State of New York,
the laws of the United States of America and to the Texas  Business  Corporation







Swift Energy Company
July  , 2001
Page 5


          Act ("TBCA"),  including provisions of the Texas Constitution that are
          applicable to the TBCA and reported  judicial  interpretations  of the
          TBCA.

     We  hereby  consent  to the  filing  of this  opinion  as  Exhibit 5 to the
Registration  Statement  and to the use of our name  under  the  caption  "Legal
Opinions" in the Prospectus  forming a part of the  Registration  Statement.  In
giving this consent,  this firm does not admit that it is within the category of
persons  whose  consent is required  under Section 7 of the Act or the rules and
regulations of the Commission promulgated thereunder.

                                 Respectfully submitted,

                                 Jenkens & Gilchrist, a Professional Corporation



                                 By: -------------------------------------------
                                     Authorized Signatory