FORM 10-Q

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

            [ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended March 31, 2000

                                       OR

            [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

              For the transition period from           to
                                             ---------    --------

                         Commission File Number 0-20154

                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
             (Exact name of registrant as specified in its charter)

                  Texas                               76-0350269
(State or other jurisdiction               (I.R.S. Employer Identification No.)
     of organization)

                        16825 Northchase Drive, Suite 400
                              Houston, Texas 77060
                    (Address of principal executive offices)
                                   (Zip Code)

                                  (281)874-2700
              (Registrant's telephone number, including area code)

                                      None

              (Former name, former address and former fiscal year,
                          if changed since last report)


Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  Registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

Yes  X      No
   ------     -----





<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                                      INDEX
<TABLE>
<CAPTION>
PART I.    FINANCIAL INFORMATION                                                PAGE


      ITEM 1.    Financial Statements
<S>                                                                             <C>
            Statement of Net Assets in Process of Liquidation

                - March 31, 2000                                                 3

            Balance Sheet

                - December 31, 1999                                              4

            Statements of Operations

                - Three month periods ended March 31, 2000 and 1999              5

            Statements of Cash Flows

                - Three month periods ended March 31, 2000 and 1999              6

            Notes to Financial Statements                                        7

      ITEM 2.    Management's Discussion and Analysis of Financial

                     Condition and Results of Operations                         10

PART II.    OTHER INFORMATION                                                    12


SIGNATURES                                                                       13
</TABLE>


<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                STATEMENT OF NET ASSETS IN PROCESS OF LIQUIDATION
                                   (Unaudited)
<TABLE>
<CAPTION>
                                                              March 31,
                                                                 2000
                                                            ---------------

ASSETS:
     <S>                                                    <C>
     Cash and cash equivalents                              $        1,784
     Nonoperating interests income receivable                       44,897
     Nonoperating interests in oil and gas properties            1,192,949
                                                            --------------
          Total Assets                                           1,239,630
                                                            --------------



LIABILITIES:

     Accounts Payable                                                5,717
                                                            --------------
          Total Liabilities                                          5,717
                                                            --------------
     Net Assets in Process of Liquidation                   $    1,233,913
                                                            ==============
</TABLE>


                              See accompanying notes to financial statements.

                                       3

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                                  BALANCE SHEET
<TABLE>
<CAPTION>
                                                               December 31,
                                                                   1999
                                                              ---------------

ASSETS:
<S>                                                           <C>
Current Assets:
     Cash and cash equivalents                                $         1,760
     Nonoperating interests income receivable                          31,686
                                                              ---------------
          Total Current Assets                                         33,446
                                                              ---------------

Nonoperating interests in oil and gas
     properties, using full cost accounting                         4,143,443
Less-Accumulated amortization                                      (3,566,733)
                                                              ---------------
                                                                      576,710
                                                              ---------------
                                                              $       610,156
                                                              ===============


LIABILITIES AND PARTNERS' CAPITAL:

Current Liabilities:
     Accounts Payable                                         $        16,094
                                                              ---------------


Interest Holders' Capital (3,664,333 Interest Holders'
                             SDIs; $1.00  per SDI)                    561,159

General Partners' Capital                                              32,903
                                                              ---------------
           Total Partners' Capital                                    594,062
                                                              ---------------
                                                              $       610,156
                                                              ===============
</TABLE>

                 See accompanying notes to financial statements.

                                       4

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                            STATEMENTS OF OPERATIONS
                                   (Unaudited)
<TABLE>
<CAPTION>
                                                                   Three Months Ended
                                                                       March 31,
                                                            ---------------------------------
                                                                2000               1999
                                                            --------------     --------------

REVENUES:
<S>                                                         <C>                <C>
     Income from nonoperating interests                     $       63,131     $       42,077
     Interest income                                                   296                392
                                                            --------------     --------------
                                                                    63,427             42,469
                                                            --------------     --------------


COSTS AND EXPENSES:
     Amortization                                                   16,089             31,296
     General and administrative                                     20,260             18,892
                                                            --------------     --------------
                                                                    36,349             50,188
                                                            --------------     --------------
Income (Loss) Before Adoption
     Of Liquidation Basis Of Accounting                     $       27,078     $       (7,719)
                                                            --------------     --------------

Effect Of Adoption Of Liquidation
     Basis Of Accounting                                           631,552                 --
                                                            --------------     --------------

Income (Loss)                                               $      658,630     $       (7,719)
                                                            ==============     ==============




Interest Holders' net income (loss)
     per SDI

     Income (Loss) Before Adoption
     of Liquidation Basis of Accounting                     $         0.01     $           --
                                                            ==============     ==============

     Effect of Adoption of Liquidation
     Basis of Accounting                                    $         0.15     $           --
                                                            ==============     ==============

     Income (Loss)                                          $         0.16     $           --
                                                            ==============     ==============
</TABLE>



                 See accompanying notes to financial statements.

                                       5

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                             STATEMENT OF CASH FLOWS
                                   (Unaudited)
<TABLE>
<CAPTION>
                                                                                                    Three Months Ended
                                                                                                         March 31,
                                                                                            ------------------------------------
                                                                                                2000                  1999
                                                                                            --------------        --------------

CASH FLOWS FROM OPERATING ACTIVITIES:
<S>                                                                                         <C>                   <C>
     Income (loss)                                                                          $      658,630        $       (7,719)
     Adjustments to reconcile income (loss) to
          net cash provided by operations:
          Effect of adoption of liquidation basis of accounting                                   (631,552)                   --
          Amortization                                                                              16,089                31,296
          Change in assets and liabilities:
               (Increase) decrease in nonoperating interests income receivable                     (13,211)                5,675
               (Increase) decrease in other current assets                                              --                27,295
               Increase (decrease) in accounts payable                                             (10,377)              (34,240)
                                                                                            --------------        --------------
          Net cash provided by (used in) operating activities                                       19,579                22,307
                                                                                            --------------        --------------

CASH FLOWS FROM INVESTING ACTIVITIES:
     Additions to nonoperating interests in oil and gas properties                                    (776)               (4,005)

     Proceeds from sales of nonoperating interests in oil and gas properties                            --                     6
                                                                                            --------------        --------------
          Net cash provided by (used in) investing activities                                         (776)               (3,999)
                                                                                            --------------        --------------

CASH FLOWS FROM FINANCING ACTIVITIES:
     Cash Distributions to partners                                                                (18,779)              (18,301)
                                                                                            --------------        --------------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                                    24                     7
                                                                                            --------------        --------------
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                                                     1,760                 1,671
                                                                                            --------------        --------------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                                                  $        1,784        $        1,678
                                                                                            ==============        ==============
</TABLE>



                 See accompanying notes to financial statements.

                                       6

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                          NOTES TO FINANCIAL STATEMENTS
                                   (UNAUDITED)

(1)  General Information -

                  The  interest   holders  of  the   Partnership   approved  the
        dissolution  of the  Partnership  on March 16,  2000.  As a result,  the
        Partnership  has changed its basis of  accounting,  effective  March 31,
        2000, from historical  cost basis to the  liquidation  basis.  Under the
        liquidation basis of accounting,  the Partnership's  assets at March 31,
        2000  are  reported  at  estimated  net   realizable   value,   and  the
        Partnership's liabilities are presented at estimated settlement amounts.
        The net  effect  of the  revaluation  of the  Partnership's  assets  and
        liabilities due to the adoption of the  liquidation  basis of accounting
        was an upward adjustment of $631,552.

                  Oil and gas  properties at March 31, 2000 reflect the Managing
        General  Partner's  estimate  of value,  in the  absence of third  party
        appraisals  or  evaluations,   based  on  future  net  revenues  of  the
        properties,  discounted  at 10%, as of March 31, 2000.  This estimate is
        based on its assessment of the impact of selling  existing  assets based
        on current  market  conditions  and estimated  disposal  costs.  The net
        proceeds from the sales of oil and gas properties may vary substantially
        due to changes in oil and gas prices,  subsequent  production  and other
        factors which may be applied by buyers.

                  For  all  other  assets  and  liabilities   presented  on  the
        liquidation  basis of accounting,  the Managing General Partner believes
        that  historical  cost   approximates  fair  market  value  due  to  the
        short-term nature of such assets and liabilities.

                  The accompanying  statements of operations and cash flows were
        prepared using the historical cost basis of accounting.

                  The financial statements included herein have been prepared by
        the  Partnership  and are  unaudited  except  for the  balance  sheet at
        December  31,  1999  which has been  taken  from the  audited  financial
        statements at that date. The financial  statements reflect  adjustments,
        all of which were of a normal recurring nature, which are in the opinion
        of the  managing  general  partner  necessary  for a fair  presentation.
        Certain  information  and  footnote  disclosures  normally  included  in
        financial  statements  prepared in accordance  with  generally  accepted
        accounting  principles  have  been  omitted  pursuant  to the  rules and
        regulations  of the  Securities  and Exchange  Commission  ("SEC").  The
        Partnership  believes adequate disclosure is provided by the information
        presented.  The financial  statements should be read in conjunction with
        the audited  financial  statements  and the notes included in the latest
        Form 10-K.

(2)  Organization and Terms of Partnership Agreement -

                  Swift Energy Pension  Partners  1991-C,  Ltd., a Texas limited
        partnership  ("the  Partnership"),  was formed on December 30, 1991, for
        the purpose of  purchasing  net  profits  interest,  overriding  royalty
        interests and royalty interests (collectively, "nonoperating interests")
        in producing oil and gas properties within the continental United States
        and Canada. Swift Energy Company ("Swift"), a Texas corporation, and VJM
        Corporation ("VJM"), a California corporation, serve as Managing General
        Partner and Special  General Partner of the  Partnership,  respectively.
        The sole limited partner of the Partnership is Swift Depositary Company,
        which has assigned all of its beneficial  (but not of record) rights and
        interest  as  limited  partner  to  the  investors  in  the  Partnership
        ("Interest  Holders"),   in  the  form  of  Swift  Depositary  Interests
        ("SDIs").

                  The Managing  General  Partner has paid or will pay out of its
        own corporate funds (as a capital  contribution to the  Partnership) all
        selling commissions,  offering expenses,  printing, legal and accounting
        fees and other  formation costs incurred in connection with the offering
        of SDIs and the  formation  of the  Partnership,  for which the Managing
        General  Partner  will  receive  an  interest  in  continuing  costs and
        revenues of the Partnership. The 350 Interest Holders made total capital
        contributions of $3,664,333.

                  Generally,   all  continuing  costs  (including   general  and
        administrative  reimbursements  and direct  expenses)  and  revenues are
        allocated  85  percent  to the  interest  holders  and 15 percent to the
        general  partners.   After   partnership   payout,  as  defined  in  the
        Partnership  Agreement,  continuing costs and revenues will be shared 75
        percent by the interest holders, and 25 percent by the general partners.

                                       7

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                   (UNAUDITED)


(3)  Significant Accounting Policies -

     Use of Estimates --

                  The  preparation  of financial  statements in conformity  with
        generally accepted  accounting  principles  requires  management to make
        estimates and assumptions that affect the reported amounts of assets and
        liabilities  at the date of the  financial  statements  and the reported
        amounts of revenues and expenses  during the  reporting  period.  Actual
        results could differ from estimates.

     Oil and Gas Revenues --

                  Oil and gas revenues are reported using the entitlement method
        in which the Partnership  recognizes its interest in oil and natural gas
        production as revenue.

     Nonoperating Interests in Oil and Gas Properties --

                  The  Partnership  accounts  for its  ownership  in oil and gas
        properties using the  proportionate  consolidation  method,  whereby the
        Partnership's  share of assets,  liabilities,  revenues  and expenses is
        included in the appropriate classification in the financial statement.

                  For financial  reporting purposes the Partnership  follows the
        "full-cost"  method of accounting for nonoperating  interests in oil and
        gas property costs. Under this method of accounting,  all costs incurred
        in the acquisition of  nonoperating  interests in oil and gas properties
        are capitalized.  The unamortized cost of nonoperating  interests in oil
        and gas  properties is limited to the "ceiling  limitation"  (calculated
        separately for the Partnership,  limited partners and general partners).
        The  "ceiling  limitation"  is  calculated  on  a  quarterly  basis  and
        represents the estimated future net revenues from nonoperating interests
        in proved  properties  using current  prices  discounted at ten percent.
        Proceeds from the sale or disposition of  nonoperating  interests in oil
        and  gas  properties  are  treated  as a  reduction  of the  cost of the
        nonoperating  interests  with no gains or  losses  recognized  except in
        significant transactions.

                  The Partnership computes the provision for amortization of oil
        and gas properties on the units-of-production method. Under this method,
        the provision is calculated by multiplying the total unamortized cost of
        oil and gas  properties  by an overall rate  determined  by dividing the
        physical  units of oil and gas  produced  during the period by the total
        estimated  units of proved oil and gas reserves at the  beginning of the
        period.

                  The calculation of the "ceiling  limitation" and the provision
        for  depreciation,  depletion and  amortization is based on estimates of
        proved reserves. There are numerous uncertainties inherent in estimating
        quantities  of proved  reserves  and in  projecting  the future rates of
        production,  timing and plan of development. The accuracy of any reserve
        estimate  is a  function  of  the  quality  of  available  data  and  of
        engineering  and  geological  interpretation  and  judgment.  Results of
        drilling,  testing and production subsequent to the date of the estimate
        may justify revision of such estimate.  Accordingly,  reserve  estimates
        are  often  different  from  the  quantities  of oil  and gas  that  are
        ultimately recovered.

(4)  Related-Party Transactions -

                  The  Partnership  entered  into a Net Profits  and  Overriding
        Royalty  Interest  Agreement  ("NP/OR   Agreement")  with  Swift  Energy
        Operating Partners 1991-C, Ltd. ("Operating Partnership"), an affiliated
        partnership  managed  by Swift  for the  purpose  of  acquiring  working
        interests in producing  oil and gas  properties.  Under the terms of the
        NP/OR  Agreement,  the  Partnership  has been  conveyed  a  nonoperating
        interest in the  aggregate net profits  (i.e.,  oil and gas sales net of
        related  operating  costs)  of  the  properties  acquired  equal  to the
        Partnership's proportionate share of the property acquisition costs.

                                       8

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                   (UNAUDITED)


(5)  Vulnerability Due to Certain Concentrations -

                  The  Partnership's  revenues are primarily the result of sales
        of its oil and natural gas production.  Market prices of oil and natural
        gas may fluctuate and adversely affect operating results.

                  In the normal  course of  business,  the  Partnership  extends
        credit,  primarily in the form of monthly oil and gas sales receivables,
        to various  companies  in the oil and gas  industry  which  results in a
        concentration  of credit risk. This  concentration of credit risk may be
        affected by changes in economic or other  conditions and may accordingly
        impact the  Partnership's  overall  credit risk.  However,  the Managing
        General  Partner  believes  that  the  risk is  mitigated  by the  size,
        reputation, and nature of the companies to which the Partnership extends
        credit.  In  addition,   the  Partnership  generally  does  not  require
        collateral or other security to support customer receivables.

(6)  Fair Value of Financial Instruments -

                  The Partnership's  financial  instruments  consist of cash and
        cash equivalents and short-term  receivables and payables.  The carrying
        amounts  approximate  fair value due to the highly  liquid nature of the
        short-term instruments.

                                       9

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                       CONDITION AND RESULTS OF OPERATIONS

GENERAL

      The  Partnership  was formed for the purpose of investing in  nonoperating
interests in producing oil and gas  properties  located  within the  continental
United States and Canada.  In order to accomplish  this,  the  Partnership  goes
through two distinct yet  overlapping  phases with respect to its  liquidity and
results of  operations.  When the  Partnership  was  formed,  it  commenced  its
"acquisition"  phase,  with all funds  placed in  short-term  investments  until
required for the acquisition of nonoperating interests.  Therefore, the interest
earned on these pre-acquisition investments becomes the primary cash flow source
for  initial  Interest  Holder   distributions.   As  the  Partnership  acquires
nonoperating  interests  in  producing  properties,  net cash from  ownership of
nonoperating  interests  becomes  available  for  distribution,  along  with the
investment   income.   After  all  partnership   funds  have  been  expended  on
nonoperating  interests in producing  oil and gas  properties,  the  Partnership
enters its  "operations"  phase.  During  this phase,  income from  nonoperating
interests  in oil  and gas  sales  generates  substantially  all  revenues,  and
distributions  to Interest  Holders  reflect those  revenues less all associated
partnership expenses.  The Partnership may also derive proceeds from the sale of
nonoperating interests in acquired oil and gas properties, when the sale of such
interests is economically appropriate or preferable to continued operations.

LIQUIDATION

      During the first quarter of 2000, the Managing  General  Partner  informed
the interest holders of a proposal to sell all of the Partnership's nonoperating
interests in oil and gas properties and dissolve and liquidate the  Partnership.
The special meeting of limited partners was held on March 16, 2000.

      Of the total  SDIs held by the  interest  holders,  a  majority  voted for
adoption of the  proposal  for sales of  substantially  all of the assets of the
Partnership and the dissolution,  winding up and termination of the Partnership.
The  Partnership  adopted the  liquidation  basis of  accounting  for the period
subsequent to March 31, 2000.

LIQUIDITY AND CAPITAL RESOURCES

      Oil and gas reserves are depleting  assets and therefore often  experience
significant  production  declines each year from the date of acquisition through
the end of the life of the  property.  The primary  source of  liquidity  to the
Partnership comes almost entirely from the income generated from the sale of oil
and gas produced from ownership interests in oil and gas properties. This source
of  liquidity  and  the  related  results  of  operations,   and  in  turn  cash
distributions,  will decline in future  periods as the oil and gas produced from
these properties also declines while  production and general and  administrative
costs remain relatively stable making it unlikely that the Partnership will hold
the properties  until they are fully depleted,  but will likely liquidate when a
substantial  majority of the reserves have been produced.  Cash distributions to
partners are determined quarterly, based upon net proceeds from sales of oil and
gas production after payment of lease operating  expense,  taxes and development
costs, less general and administrative expenses. In addition, future partnership
cash requirements are taken into account to determine necessary cash reserves.

      Net cash provided by operating  activities totaled $19,579 and $22,307 for
the three months ended March 31, 2000 and 1999, respectively. Cash distributions
totaled  $18,779 and $18,301 for the three months ended March 31, 2000 and 1999,
respectively.

      The  Partnership  has  expended  all  of  the  partners'  net  commitments
available for property  acquisitions and development by acquiring  producing oil
and gas  properties.  The  partnership  invests  primarily  in proved  producing
properties  with nominal  levels of future costs of  development  for proven but
undeveloped reserves.  Significant purchases of additional reserves or extensive
drilling  activity  are not  anticipated.  The  Partnership  does not  allow for
additional  assessments  from the  partners or interest  holders to fund capital
requirements. However, funds are available from partnership revenues or proceeds
from the sale of partnership  property.  The Managing  General Partner  believes
that the funds currently  available to the Partnership  will be adequate to meet
any anticipated capital requirements.

      After sale of all its nonoperating interests in oil and gas properties and
settlement of its liabilities,  the Partnership's  assets will consist solely of
cash,  which it will  distribute  to its partners in complete  liquidation.  The
Partnership will not realize gain or loss upon such  distribution of cash to its
partners in liquidation.

                                       10

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                 CONDITION AND RESULTS OF OPERATIONS (CONTINUED)


RESULTS OF OPERATIONS

      Income  from  nonoperating  interests  increased  50  percent in the first
quarter of 2000 when  compared  to the same  quarter in 1999.  Oil and gas sales
increased  $46,097 or 80 percent in the first  quarter of 2000 when  compared to
the  corresponding  quarter  in  1999.  Increased  oil  and  gas  prices  had  a
significant impact on Partnership performance.  Oil prices increased 339 percent
or $20.45/BBL to an average of $26.49/BBL and gas prices increased 65 percent or
$1.07/MCF to an average of $2.73/MCF for the quarter. Current quarter production
volumes  decreased 31 percent as oil and gas production  declined 45 percent and
17  percent,  respectively,  when  compared  to first  quarter  1999  production
volumes. Production declines were offset by increased oil and gas prices.

      Corresponding production costs per equivalent MCF increased 274 percent in
the  first  quarter  of 2000  compared  to the first  quarter  of 1999 and total
production costs increased 160 percent,  related to the significant increases in
oil and gas prices

      Total  amortization  expense  decreased  49  percent  or  $15,207  in 2000
compared to first quarter 1999, related to the decline in production volumes.

      The Partnership records an additional provision in depreciation, depletion
and amortization when the present value, discounted at ten percent, of estimated
future net revenues  from oil and gas  properties,  using the  guidelines of the
Securities and Exchange  Commission,  is below the fair market value  originally
paid for oil and gas  properties.  Using prices in effect at March 31, 1999, the
Partnership would have recorded an additional provision at March 31, 1999 in the
amount of $22,204.  However,  these temporarily low quarter-end prices rebounded
and by using prices in effect at the filing date, the Partnership's  unamortized
cost of oil and gas properties were not limited by this calculation.

      During 2000,  partnership  revenues  and costs will be shared  between the
Interest Holders and general partners in an 85:15 ratio.

                                       11

<PAGE>


                   SWIFT ENERGY PENSION PARTNERS 1991-C, LTD.
                           PART II - OTHER INFORMATION

ITEM 5.    OTHER INFORMATION

                                     -NONE-

                                       12

<PAGE>


                                   SIGNATURES

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  Registrant  has duly  caused  this report to be signed on its
behalf by the undersigned thereunto duly authorized.

                                         SWIFT ENERGY PENSION
                                         PARTNERS 1991-C, LTD.
                                         (Registrant)

                              By:        SWIFT ENERGY COMPANY
                                         Managing General Partner

Date:     May 8, 2000         By:        /s/ John R. Alden
        --------------
                                         -----------------------------------
                                         John R. Alden
                                         Senior Vice President, Secretary
                                         and Principal Financial Officer

Date:     May 8, 2000         By:        /s/ Alton D. Heckaman, Jr.
        --------------
                                         -----------------------------------
                                         Alton D. Heckaman, Jr.
                                         Vice President, Controller
                                         and Principal Accounting Officer