As filed with the Securities and Exchange Commission on December 28, 2005
                                            Registration Statement No. 333-12831

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                         Post-Effective Amendment No. 1
                                       to
                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933


                              SWIFT ENERGY COMPANY
             (Exact name of Registrant as specified in its charter)

                Texas                                    74-2073055
      (State of Incorporation)              (I.R.S. Employer Identification No.)

                         16825 Northchase Dr., Suite 400
                              Houston, Texas 77060
               (Address of Principal Executive Offices) (Zip Code)

                                 Terry E. Swift
                             Chief Executive Officer
                              Swift Energy Company
                         16825 Northchase Dr., Suite 400
                              Houston, Texas 77060
                                 (281) 874-2700
               (Name, address and telephone number of Registrant's
                    executive offices and agent for service)

                                   Copies to:
                                  Karen Bryant
             General Counsel-Corporate, Chief Governance 
                             Officer and Secretary
                              Swift Energy Company
                         16825 Northchase Dr., Suite 400
                              Houston, Texas 77060
                                 (281) 874-2700

     Approximate date of commencement of proposed sale to the public:  From time
to time after the effective date of this Registration Statement.

     If the only  securities  being  registered  on this Form are being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. | |

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. |X|

     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration  statement number of earlier  effective
registration statement for the same offering. | |

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. | |

     If this Form is a registration  statement  pursuant to General  Instruction
I.D. or a  post-effective  amendment  thereto that shall become  effective  upon
filing with the  Commission  pursuant to Rule 462(e) under the  Securities  Act,
check the following box. | |

         If this Form is a post-effective amendment to a registration statement
filed pursuant to General Instruction I.D. filed to register additional
securities or additional classes of securities pursuant to Rule 413(b) under the
Securities Act, check the following box. | |





                                EXPLANATORY NOTE

                   POST EFFECTIVE AMENDMENT NO. 1 TO FORM S-3

     This Post-Effective  Amendment No. 1 to Registration Statement 333-12831 on
Form S-3 is being filed  pursuant to Rule 414 under the  Securities Act of 1933,
as  amended  (the  "Securities   Act"),  to  reflect  the  new  holding  company
organizational structure of Swift Energy Company (the "Registrant"), effected in
accordance  with  Article  5.03.H of the  Texas  Business  Corporation  Act (the
"TBCA") and the  Registrant's  status as the  successor  issuer to Swift  Energy
Company as it was constituted prior to the Merger (as defined below).

     The holding company  organizational  structure was effected  pursuant to an
Plan and Agreement and Articles of Merger (the "Merger  Agreement")  among Swift
Energy  Company  as it was  constituted  prior  to the  effectuation  of the new
holding company structure (the "Predecessor"),  the Registrant, and Swift Energy
Operating,  LLC, a Texas limited liability company and a wholly-owned subsidiary
of the Registrant ("Operating"). The Merger Agreement provides for the merger of
the  Predecessor  into  Operating,  with  Operating  continuing as the surviving
entity and as a wholly-owned  subsidiary of the Registrant (the  "Merger").  The
Merger was  effective as of 9:00 a.m.,  local time in Austin,  Texas on December
28,  2005.  Prior to the  Merger,  the  Registrant  was a  direct,  wholly-owned
subsidiary  of the  Predecessor  organized for the purpose of  implementing  the
holding  company  organizational  structure.  Pursuant to Article  5.03.H of the
TBCA,  shareholder  approval of the Merger was not required.  In connection with
the Merger, the Registrant's name was changed to "Swift Energy Company."

     By virtue of the Merger, all of the Predecessor's outstanding capital stock
was converted, on a share for share basis, into capital stock of the Registrant.
As a  result,  each  shareholder  of the  Predecessor  became  the  owner  of an
identical  number of shares of capital  stock of the  Registrant.  Additionally,
each  treasury  share of the  Predecessor  was  automatically  converted  into a
treasury share of the  Registrant.  Also,  each  outstanding  option to purchase
shares of the  Predecessor's  common stock was  automatically  converted into an
option to purchase,  upon the same terms and conditions,  an identical number of
shares of the Registrant's common stock.  Finally, each preferred share purchase
right  under  the  Predecessor's  Amended  and  Restated  Rights  Agreement  was
automatically  converted,  upon the same terms and conditions,  into a preferred
share purchase right for each outstanding share of the Registrant's common stock
held by such holder.

     In accordance with Rule 414, the Registrant, as the successor issuer to the
Predecessor,  hereby  expressly adopts  Registration  Statement No. 333-12831 on
Form S-3 as its own for all purposes under the Securities Act and the Securities
Exchange Act of 1934, as amended. This Registration  Statement pertains to Swift
Energy Company's  Employee stock Ownership Plan.  Registration fees were paid at
the time of filing the original Registration Statement.




                                      -2-


Item 16.        Exhibits



Exhibit        Document Description
No.            --------------------
-------
            

2.1            Plan and Agreement and Articles of Merger to Form Holding Company, dated as of December 21, 2005,
               but effective at 9:00 a.m., local time in Austin, Texas on December 28, 2005, by and among the
               Registrant, the Predecessor and Operating (incorporated by
               reference as Exhibit 2.1 to the Registrant's Form 8-K filed on
               December 28, 2005)

***4           Specimen share certificates (incorporated by reference to the Company's Registration Statement No.
               33-30854 on Form S-1 filed on September 1, 1989)

4.1            Amendment No. 1 to the Rights Agreement dated December 12, 2005 between Swift Energy Company and
               American Stock Transfer & Trust Company, as Rights Agent (incorporated by reference as Exhibit 4.3
               to Swift Energy Company's Form 8-K filed on December 28, 2005)

4.2            Assignment, Assumption, Amendment and Novation Agreement between the Registrant, the Predecessor and
               American Stock Transfer & Trust Company, as Rights Agent effective at 9:00 am., local time in
               Austin, Texas on December 28, 2005 (incorporated by reference as
               Exhibit 4.4 to the Registrant's Form 8-K filed on December 28,
               2005)

*5             Opinion of Jenkens & Gilchrist, A Professional Corporation, as to the validity of the common stock

*23.1          Consent of Ernst and Young LLP

*23.3          Consent of Jenkens & Gilchrist, A Professional Corporation (included in Exhibit 5)

*24            Power of Attorney (included on signature page)

                                             
*    Filed herewith
**   To be filed by amendment or Form 8-K
***  Previously filed



                                      -3-


                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  Act of 1933,  the  Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the  City of  Houston,  State  of  Texas,  on this  28th  day of
December, 2005.

                                       SWIFT ENERGY COMPANY



                                       /s/ Terry E. Swift
                                       -----------------------------------------
                                       Terry E. Swift
                                       Chief Executive Officer


     Each  person  whose  signature   appears  below  as  a  signatory  to  this
Registration  Statement  constitutes  and  appoints  Terry  E.  Swift,  Alton D.
Heckaman,  Jr.,  and  Bruce  H.  Vincent  or any of them,  his  true and  lawful
attorney-in-fact  and agent with full power of substitution and  resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign any
and all amendments to this  Registration  Statement,  and to file the same, with
all exhibits thereto, and all other documents in connection therewith,  with the
Securities  and Exchange  Commission,  granting unto said  attorney-in-fact  and
agent,  full power and  authority to do and perform each and every act and thing
requisite and  necessary to be done in and about the  premises,  as fully to all
intents and  purposes as he might or could do in person,  hereby  ratifying  and
confirming  all that  said  attorney-in-fact  and  agent or his  substitute  may
lawfully do or cause to be done by virtue hereof.

     Pursuant to the  requirements  of the  Securities  Act of 1933, as amended,
this  Registration  Statement  has been signed by the  following  persons in the
capacities and on the dates indicated,  in multiple counterparts with the effect
of one original.





           Signature                                       Capacity                                  Date
           ---------                                       --------                                  ----
                                                                                         


/s/ A. Earl Swift                       
----------------------------            Chairman of the Board                                  December 28, 2005
A. Earl Swift


/s/ Terry E. Swift                  
----------------------------            Chief Executive Officer (Principal Executive           December 28, 2005
Terry E. Swift                          Officer) and Director


/s/ Bruce H. Vincent                    
----------------------------            President and Director                                 December 28, 2005
Bruce H. Vincent


/s/ Alton D. Heckaman, Jr.             
----------------------------            Executive Vice President and Chief Financial           December 28, 2005
Alton D. Heckaman, Jr.                  Officer (Principal Financial Officer)


/s/ David W. Wesson                     
----------------------------            Controller (Principal Accounting Officer)              December 28, 2005
David W. Wesson



                                      -4-


--------------------------
Deanna L. Cannon                        Director                                               December 28, 2005


/s/ Raymond E. Galvin
--------------------------
Raymond E. Galvin                       Director                                               December 28, 2005


--------------------------
Douglas J. Lanier                       Director                                               December 28, 2005


--------------------------
Greg Matiuk                             Director                                               December 28, 2005


--------------------------
Henry C. Montgomery                     Director                                               December 28, 2005


/s/ Clyde W. Smith, Jr.
--------------------------
Clyde W. Smith, Jr.                     Director                                               December 28, 2005




                                      -5-




INDEX TO EXHIBITS

    Exhibit No.                                 Document Description
    -----------                                 --------------------

5                 Opinion of Jenkens & Gilchrist, a Professional Corporation, as
                  to the validity of the common stock

23.2              Consent of Ernst & Young LLP










                                      -6-