SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
                              (Amendment No.      )
Filed by the Registrant [X]
Filed by a Party other than the Registrant [ ]
Check the appropriate box:
[X]   Preliminary Proxy Statement
[ ]   Confidential, for Use of the Commission Only (as permitted by Rule
         14a-6(e)(2))
[ ]   Definitive Proxy Statement
[ ]   Definitive Additional Materials
[ ]   Soliciting Material Pursuant to ss. 240.14a-11(c) or ss. 240.14a-12
          Swift Energy Managed Pension Assets Partnership 1990-D, Ltd.
                (Name of Registrant as Specified In Its Charter)

                              Swift Energy Company
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):
[ ]   $125 per Exchange Act Rules  0-11(c)(1)(ii),  14a-6(i)(1),  14a-6(i)(2) or
         Item  22(a)(2) of Schedule 14A.
[ ]   $500 per each party to the controversy pursuant to Exchange Act Rule
         14a-6(i)(4).
[X]   Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.
      1) Title of each class of securities to which transaction applies:
                            Limited Partnership Units
      2) Aggregate number of securities to which transaction applies:
                                    29,303.79
      3) Per unit  price  or other  underlying  value  of  transaction  computed
         pursuant to  Exchange  Act Rule 0-11 (set forth the amount on which the
         filing fee is  calculated  and state how it was  determined):
                                $15.46 - $21.11
           Estimate based on estimated value of the underlying assets
      4) Proposed maximum aggregate value of transaction:
                                   $618,603.00
      5) Total fee paid:
                                     $123.72
[ ]   Fee paid previously with preliminary materials.
[ ]   Check  box  if any part of the fee is offset as provided  by Exchange  Act
      Rule  0-11(a)(2)  and identify the filing for which the offsetting fee was
      paid  previously.  Identify the previous filing by registration  statement
      number, or the Form or Schedule and the date of its filing.
      1) Amount Previously Paid:
         -----------------------------------------------------------------------
      2) Form, Schedule or Registration Statement No.:
         -----------------------------------------------------------------------
      3) Filing Party:
         -----------------------------------------------------------------------
      4) Date Filed:
         -----------------------------------------------------------------------






                                                                   May ___, 1997




Dear Limited Partner:

      Enclosed is a proxy  statement  and related  information  pertaining  to a
proposal to sell all of the Partnership's  properties and dissolve and liquidate
the  Partnership.  In order for the sale and liquidation to take place,  Limited
Partners holding a majority of the outstanding Units must approve this proposal.
The Managing General Partner  recommends that you vote in favor of such sale and
liquidation for a number of reasons.

      Swift Energy Managed Pension Assets Partnership  1990-D,  Ltd. has been in
existence  for over six years,  and most of the  properties  underlying  its net
profits interest were purchased by 1991. All economically  feasible  enhancement
opportunities  have  already been  implemented  by the  Partnership's  companion
partnership  on the  properties  in which  the  Partnership  owns  non-operating
interests.  Consequently, the Partnership's interest in proved reserves that can
be produced without requiring  further  expenditures is quite low. Thus, even if
oil and gas  prices  were  unusually  high,  there  would be no impact  upon the
Partnership's  ultimate  economic  performance.  To  continue  operation  of the
Partnership  means that  Partnership  administrative  expenses (such as costs of
audits,  reserve reports,  and Securities and Exchange Commission  filings),  as
well as the cost of operating the  properties in which the  Partnership  owns an
interest, will continue while revenues decrease, which may decrease the ultimate
funds available for Limited Partners. Liquidation of the Partnership's remaining
assets  at this time is  likely  to  result  in a  greater  percentage  of sales
proceeds being paid to Limited  Partners,  rather than being used to fund future
general and  administrative  and operating  expenses,  and will  accelerate  the
receipt by the partners of the remaining cash value of the Partnership.

      If Limited Partners holding a majority of the Units approve this proposal,
the  Managing  General  Partner  will  attempt  to  complete  the  sale  of  all
Partnership properties by the end of 1997.

      Included  in  this  package  are  the  most  recent  financial  and  other
information prepared regarding the Partnership. If you need any further material
or have  questions  regarding  this  proposal,  please  feel free to contact the
Managing General Partner at (800) 777-2750.

      We urge you to complete your Proxy and return it immediately, as your vote
is  important in reaching a quorum  necessary to have an effective  vote on this
proposal.  Enclosed  is a  green  Proxy,  along  with  a  postage-paid  envelope
addressed to the Managing  General  Partner for your use in voting and returning
your Proxy.  Thank you very much.


                                            SWIFT ENERGY COMPANY,
                                            Managing General Partner

                                            By:
                                               ---------------------------------
                                               A. Earl Swift
                                               Chairman







          Swift Energy Managed Pension Assets Partnership 1990-D, Ltd.
                        16825 Northchase Drive, Suite 400
                              Houston, Texas 77060
                                 (281) 874-2700

                  NOTICE OF SPECIAL MEETING OF LIMITED PARTNERS
                            To be held July ___, 1997


      Notice is hereby given that a special meeting of limited partners of Swift
Energy Managed Pension Assets Partnership  1990-D, Ltd. (the "Partnership") will
be held at 16825  Northchase  Drive,  Houston,  Texas, on July ___, 1997 at 4:00
p.m. Central Time to consider and vote upon:

      The adoption of a proposal for (a) sale of substantially all of the assets
      of the Partnership  (consisting of its net profits interest),  and (b) the
      dissolution,   winding  up  and  termination  of  the   Partnership   (the
      "Termination").  All asset  sales and the  Termination  comprise  a single
      proposal  (the  "Proposal"),  and a vote in  favor  of the  Proposal  will
      constitute a vote in favor of each of these matters.

      A record of limited  partners of the  Partnership has been taken as of the
close of business on May ___, 1997, and only limited  partners of record on that
date  will  be  entitled  to  notice  of and to  vote  at  the  meeting,  or any
adjournment thereof.

      If you do not expect to be  present in person at the  meeting or prefer to
vote by proxy in  advance,  please  sign and date the  enclosed  proxy  card and
return it promptly in the enclosed postage-paid envelope which has been provided
for your  convenience.  The prompt return of the proxy card will ensure a quorum
and save the Partnership the expense of further solicitation.

                                                        SWIFT ENERGY COMPANY,
                                                        Managing General Partner

                                                        By:
                                                           ---------------------
                                                           JOHN R. ALDEN
                                                           Secretary
May ___, 1997







                                TABLE OF CONTENTS

SUMMARY........................................................................1

GENERAL INFORMATION............................................................3
      Documents Included.......................................................3
      Vote Required............................................................3
      Proxies; Revocation......................................................3
      Dissenters' Rights.......................................................3
      Solicitation.............................................................4

RISK FACTORS...................................................................4

THE PROPOSAL...................................................................5
      General..................................................................5
      Partnership Financial Performance and Condition..........................5
      Estimates of Liquidating Distribution Amount.............................8
      Comparison of Sale Versus Continuing Operations.........................10
      Reasons for the Proposal................................................11
      Simultaneous Proposal to Operating Partnerships.........................12
      Steps to Implement the Proposal.........................................13
      Impact on the Managing General Partner..................................14
      Recommendation' of the Managing General Partner.........................15

FEDERAL INCOME TAX CONSEQUENCES...............................................15
      General.................................................................15
      Tax Treatment of Tax Exempt Plans.......................................16
      Tax Treatment of Limited Partners Subject to Federal Income Tax Due
         to Debt-financing or Who are Not Tax Exempt Plans....................17
      Taxable Gain or Loss Upon Sale of Properties............................17
      Liquidation of the Partnership..........................................18
      Capital Gains Tax.......................................................18
      Passive Loss Limitations................................................18

BUSINESS OF THE PARTNERSHIP...................................................20
      Reserves................................................................20
      The Managing General Partner............................................21
      Transactions Between the Managing General Partner and the
         Partnership..........................................................21
      No Trading Market.......................................................21
      Principal Holders of Limited Partner Units..............................22
      Approvals...............................................................22
      Legal Proceedings.......................................................22



                                        i




INCORPORATION OF CERTAIN INFORMATION BY REFERENCE AND ATTACHMENT
      OF SUCH INFORMATION HERETO..............................................22

OTHER BUSINESS................................................................22



                                       ii







          Swift Energy Managed Pension Assets Partnership 1990-D, Ltd.
                        16825 Northchase Drive, Suite 400
                            Houston, Texas 77060-9468
                                 (281) 874-2700


                    ----------------------------------------
                                 PROXY STATEMENT
                    ----------------------------------------

                                     SUMMARY

      This Proxy  Statement is being provided by Swift Energy  Company,  a Texas
corporation  (the  "Managing  General  Partner") in its capacity as the Managing
General Partner of Swift Energy Managed Pension Assets Partnership  1990-D, Ltd.
a Texas limited partnership (the "Partnership"),  to holders of units of limited
partnership interests representing an initial investment of $100 per Unit in the
Partnership  (the  "Units").  This Proxy  Statement  and the enclosed  proxy are
provided  for  use at a  special  meeting  of  limited  partners  (the  "Limited
Partners"),  and any  adjournment of such meeting (the  "Meeting") to be held at
16825 Northchase Drive,  Houston,  Texas, at 4:00 p.m. Central Time on July ___,
1997.  The  Meeting is called for the purpose of  considering  and voting upon a
proposal  to  (a)  sell  substantially  all  of the  assets  of the  Partnership
(consisting  of its  net  profits  interest),  and  (b)  dissolve,  wind  up and
terminate the  Partnership  (the  "Proposal"),  in accordance with the terms and
provisions of Article XVI of the  Partnership's  Limited  Partnership  Agreement
dated  December 31, 1990 (the  "Partnership  Agreement"),  and the Texas Revised
Limited Partnership Act (the "Texas Act"). This Proxy Statement and the enclosed
proxy are first being mailed to Limited Partners on or about May ___, 1997.

      Under Article XVI.C of the Partnership Agreement,  the affirmative vote of
Limited Partners holding at least 51% of the Units then held by Limited Partners
as of the Record Date (as  defined) is required  for  approval of the  Proposal.
Each Limited Partner appearing on the Partnership's  records as of May ___, 1997
(the "Record Date"), is entitled to notice of the Meeting and is entitled to one
vote for each Unit  held by such  Limited  Partner.  Under  Article  XX.H of the
Partnership  Agreement,  the Managing General Partner may not vote its Units for
matters  such as the  Proposal.  The Managing  General  Partner  currently  owns
approximately 4.14% of all outstanding Units. Therefore, the affirmative vote of
holders of 51% of the remaining Units is required to approve the proposed sale.

      The working  interest in the producing oil and gas properties in which the
Partnership  owns the  Property  Interests is owned by an  affiliated  companion
partnership (the "Operating Partnership"). The Partnership's assets consist of a
net profits  interest that covers multiple working  interests,  and which may be
divided  into  multiple  net  profits  interests  if the  Operating  Partnership
separately  sells  one or  more of its  working  interests  burdened  by the net
profits


                                        1





interest  (the  "Property  Interests").  Upon  approval  of the  Proposal by the
Limited Partners, the Managing General Partner intends to sell substantially all
of  the   Partnership's   Property   Interests,   together  with  the  Operating
Partnership's  working interests in the same properties,  in a sale or series of
sales,  use the proceeds to pay or provide for the payment of  liabilities,  and
then  wind  up  the  affairs  of the  Partnership.  The  Partnership's  Property
Interests cover 358 wells. The total PV10 value of the  Partnership's  remaining
reserves as of December 31, 1996 was  $560,688.  The most  significant  property
owned by the Partnership is the Velrex Field in Schleicher County,  Texas, which
accounts  for  approximately  35% of the  value of the  Partnership's  remaining
reserves.  During  1996,  approximately  78% of the  Partnership's  revenue  was
attributable to natural gas production.  For more information,  see the attached
Annual  Report on Form 10-K for the year ended  December  31,  1996 and the Form
10-Q for the first quarter of 1997.

      It is highly likely that the Property  Interests  will be sold in a series
of sales  rather than in a single  transaction.  The  Managing  General  Partner
anticipates that most of the  Partnership's  Property  Interests will be sold in
auctions (together with the working interest owned by the Operating Partnership)
conducted by the Oil & Gas Asset Clearinghouse (the "O&G  Clearinghouse"),  or a
similar company engaged in auctions of oil and gas properties,  although some of
the Partnership's Property Interests may be sold in negotiated transactions. The
Managing General Partner will not begin the sales process until the Proposal has
been approved by the Limited  Partners.  The Managing  General Partner is asking
for  approval of the  Proposal  prior to  offering  the  Partnership's  Property
Interests   for  sale  to  avoid  delay  in  selling  the  Property   Interests.
Furthermore,  as the  Managing  General  Partner  must  sell  the  Partnership's
Property  Interests  in its oil and gas  properties  together  with the  working
interests  in those same  properties  owned by the  Operating  Partnerships  and
several other  Partnerships  which it manages,  solicitation of approval of each
purchase offer from all of the partnerships would be impractical.

       It is possible,  though unlikely, that less than all of the Partnership's
Property  Interests  will be sold.  See "The  Proposal--Steps  to Implement  the
Proposal--Negotiated  Sale." The Managing  General Partner  anticipates that the
majority  of  sales  will be made by the end of 1997.  The  sale of  Partnership
Property  Interests  that  account for at least 662/3% of the total value of the
Partnership   Property   Interests  will  cause  the   Partnership  to  dissolve
automatically  under the terms of the  Partnership  Agreement and the Texas Act.
Any Partnership  Property Interests that are not sold pursuant to an auction may
be sold pursuant to a negotiated sale.

      Currently there are no buyers for the Property  Interests and the price at
which  they  will be sold  has not yet been  determined.  The  Managing  General
Partner  cannot  accurately  predict the prices at which the Property  Interests
ultimately   will  be  sold.   See  "The   Proposal--Estimates   of  Liquidating
Distribution  Amount."  In  addition  to the  foregoing,  there  are some  risks
involved in the Proposal. See "Risk Factors."

      If the Proposal is not approved by Limited Partners holding 51% or more of
the Units held by Limited  Partners,  the Partnership will continue to exist. In
that event,  however,  due to the  expected  decline in  revenues,  the Managing
General Partner estimates that a portion of the


                                        2





Partnership's  Property  Interests will need to be sold in order to cover future
direct costs, operating costs and administrative costs.

      The Managing  General Partner  receives  operating fees for wells in which
the  Partnership has a net profits  interest and for which the Managing  General
Partner or its affiliates serve as operator.  It is anticipated that, due to the
sale of interests in wells by the Operating  Partnership,  the Managing  General
Partner  will no longer serve as operator for a number of the wells in which the
Partnership has a net profits interest.  To the extent that the operator changes
because of a change in ownership of the properties, the Managing General Partner
will lose the revenues it  currently  earns as  operator.  The Managing  General
Partner believes,  however,  that it will be positively  affected,  on the other
hand, by liquidation of the Partnership,  on the basis of its ownership interest
in the Partnership.  See "The  Proposal--Estimates  of Liquidating  Distribution
Amount," and "The Proposal--Impact on the Managing General Partner."

            LIMITED PARTNERS ARE URGED TO COMPLETE, SIGN AND DATE THE
          ENCLOSED PROXY CARD AND TO RETURN IT TO THE MANAGING GENERAL
                                PARTNER NO LATER
                          THAN _________________, 1997.


                                        3





                               GENERAL INFORMATION

Documents Included

      The  Partnership's  Annual Report on Form 10-K for the year ended December
31, 1996 and its quarterly report on Form 10-Q for the first quarter of 1997 are
included with this Proxy  Statement and  incorporated  herein by reference.  See
"Incorporation  of Certain  Information  By  Reference  and  Attachment  of Such
Information Hereto." Additionally, a reserve report dated May 20, 1997, prepared
as of December 31,  1996,  and audited by H. J. Gruy &  Associates,  is attached
hereto.

Vote Required

      According  to the  terms of the  Partnership  Agreement,  approval  of the
Proposal  requires  the  affirmative  vote by the holders of at least 51% of the
Units held by Limited  Partners.  Therefore,  an abstention by a Limited Partner
will have the same effect as a vote against the Proposal.  This  solicitation is
being made for votes in favor of the Proposal  (which will result in liquidation
and  dissolution).  As of the Record Date,  28,089.79 Units were outstanding and
were held of record by 277 Limited  Partners  (excluding  the  Managing  General
Partner's  Units).  Each  Limited  Partner is entitled to one vote for each Unit
held in his  name on the  Record  Date.  Accordingly,  the  affirmative  vote of
holders of at least  14,324.77  Units is required to approve the  Proposal.  The
Managing General Partner holds 1,214 Units, but, in accordance with Article XX.H
of the  Partnership  Agreement,  the Managing  General  Partner may not vote its
Units. The Managing  General  Partner's  non-vote,  in contrast to abstention by
Limited Partners, will not affect the outcome,  because for purposes of adopting
the Proposal its Units are excluded from the total number of voting Units.

      The Limited  Partners  should be aware that once they approve the Proposal
pursuant to this Proxy  Solicitation,  they will have no opportunity to evaluate
the actual terms of any specific purchase offers for the Partnership's  Property
Interests. See "The Proposal - General" herein. See "The Proposal -- Reasons for
the Proposal" and "The Partnership -- Transactions  Between the Managing General
Partner and the Partnership." Proxies; Revocation

      If a proxy is properly signed and is not revoked by a Limited Partner, the
Units it represents  will be voted in accordance  with the  instructions  of the
Limited Partner. If no specific  instructions are given, the Units will be voted
FOR the Proposal.  A Limited  Partner may revoke his proxy at any time before it
is voted at the Meeting.  Any Limited Partner who attends the Meeting and wishes
to vote in person  may  revoke  his  proxy at that  time.  Otherwise,  a Limited
Partner must advise the Managing  General  Partner of revocation of his proxy in
writing,  which  revocation must be received by the Managing  General Partner at
16825  Northchase  Drive,  Suite 400,  Houston Texas 77060 prior to the time the
vote is taken.



                                        4





Dissenters' Rights

      Limited  Partners are not entitled to any dissenters' or appraisal  rights
in connection with the approval of the Proposal. Dissenting Limited Partners are
protected under state law by virtue of the fiduciary duty of general partners to
act with prudence in the business affairs of the Partnership.

Payment of Liquidating Distributions

      Following  the approval of the Proposal at the Meeting,  Limited  Partners
will receive a final  liquidating  distribution  in cash from the Partnership as
soon as practicable after the affairs of the Partnership have been wound up. The
Managing  General  Partner  expects  that such  payment will be made by year-end
1997. It will not be necessary for Limited Partners to surrender any certificate
or other documents  representing their ownership of Units.  Payment will be made
to each Limited Partner identified on the Partnership's records as of the Record
Date, or, upon appropriate  written  instruction from a Limited Partner,  to his
assignee.

Solicitation

      The  solicitation is being made by the  Partnership.  The Partnership will
bear  the  costs  of  the  preparation  of  this  Proxy  Statement  and  of  the
solicitation  of proxies  and such costs will be  allocated  90% to the  Limited
Partners  and  10% to  the  General  Partners  with  respect  to  their  general
partnership  interests pursuant to Article  VIII.A(iv).  As the Managing General
Partner  holds  approximately  4.14% of the Units held by all Limited  Partners,
4.14% of the costs borne by the Limited  Partners  will be borne by the Managing
General  Partner,  in  addition  to its  portion  borne  as a  General  Partner.
Solicitations  will be made primarily by mail. In addition to  solicitations  by
mail,  a number of regular  employees of the  Managing  General  Partner may, if
necessary  to ensure the presence of a quorum,  solicit  proxies in person or by
telephone.  The Managing  General  Partner also may retain a proxy  solicitor to
assist in  contacting  brokers or Limited  Partners to  encourage  the return of
proxies,  although  it does not  anticipate  doing so.  The costs of this  proxy
solicitation,  including  legal and accounting  fees and expenses,  printing and
mailing costs, and related costs are estimated to be approximately $20,000.

                                  RISK FACTORS

      Notwithstanding the following discussion,  there are risks involved in the
Proposal.  While  the  Managing  General  Partner  is not  aware of any  unknown
liabilities at this time, should any unexpected  liabilities come to light prior
to  making  the  final   liquidating   distribution,   such  liabilities   could
significantly  reduce,  or  eliminate   altogether,   such  final  distribution.
Anticipated sales prices for the properties may not be achieved. Should domestic
gas prices  strengthen  after the sales of the assets,  it is possible that more
advantageous sales prices for the properties might have been realized at a later
date.  Furthermore,  if the  Partnership  approves  the  proposal  to  sell  its
properties  but the  Operating  Partnership  does  not  approve  the sale of its
Property Interests and


                                        5





actually sell its interests in the same properties, then the Partnership will be
forced to sell its net  profits  interest  as a single  property  (or  undivided
interests therein). The purchaser or purchasers would have no control as working
interest owners, as the working interest will still be retained by the Operating
Partnership.  Because  this may  affect  the  saleability  of the  Partnership's
Property  Interests,  it may be necessary  for the Managing  General  Partner to
purchase  the  Partnership's  interests  in  such  properties.   Therefore,  the
likelihood of sale of the Partnership's Property Interests will be significantly
affected  by  the  ability  of  the  Partnership  and  its  companion  Operating
Partnership to sell their ownership  interests in the same properties  together,
which in turn is  dependent  upon  approval  of the  proposal  being made to the
Partnership and the similar proposal being made  simultaneously to the companion
Operating  Partnership.  Failure to approve the  proposal by either  partnership
could  significantly  adversely  affect  the  sale of  properties  by the  other
partnership.    See   "The   Proposal--Simultaneous    Proposal   to   Operating
Partnerships."



                                        6





                                  THE PROPOSAL

General

      The Managing  General  Partner has  proposed  that the  Partnership's  net
profits  interest be sold,  the  Partnership  be dissolved and that the Managing
General  Partner,  acting as  liquidator,  wind up its  affairs  and make  final
distributions to its partners. The Partnership's assets consist of a net profits
interest (the "Property Interests") in producing oil and gas properties in which
the working  interest is owned by an affiliated  partnership also managed by the
Managing  General  Partner  and  formed  at  approximately  the same time as the
Partnership was organized. The Partnership's  non-operating net profits interest
exists by virtue of a Net  Profits and  Overriding  Royalty  Interest  Agreement
("NP/OR  Agreement")  dated December 31, 1990 Swift Energy Income Partners 1990-
D, Ltd. (the "Operating Partnership"). The NP/OR Agreement gives the Partnership
a net profits interest in a group of producing properties in which the Operating
Partnership owns the working interests,  and entitles the Partnership to receive
a portion of the net profits from operation of the group of producing properties
owned by the Operating Partnership which are subject to the NP/OR Agreement. The
net  profits  percentage  to which the  Partnership  is entitled is based upon a
percentage of the gross proceeds (reduced by certain costs) from the sale of oil
and gas production from these properties.

      The Managing  General  Partner  intends to sell most of the  Partnership's
Property  Interests  through  auction  conducted by the O&G  Clearinghouse  or a
similar company,  although some of the Partnership's Property Interests might be
sold in negotiated  transactions.  The Managing  General Partner expects to sell
all properties not sold by auction pursuant to negotiated sales conducted by the
Managing   General   Partner  or  a  third  party  engaged  to  dispose  of  the
Partnership's assets. The Partnership, if not terminated earlier, will terminate
automatically, pursuant to the terms of the Partnership Agreement, on January 1,
2021.

      The Managing General Partner is an independent oil and gas company engaged
in the  exploration,  development,  acquisition  and  operation  of oil  and gas
properties,   both   directly  and  through   partnership   and  joint   venture
arrangements,  and  therefore  holds  various  interests in numerous oil and gas
properties.  Furthermore,  the Managing  General Partner is the managing general
partner of a number of oil and gas partnerships.

Partnership Financial Performance and Condition

      The Partnership owns non-operating Property Interests in producing oil and
gas  properties  within  the  continental   United  States  in  which  Operating
Partnerships  managed by the Managing General Partner own the working interests.
By the end of 1991 the  Partnership  had expended  all of its  original  capital
contributions  for the purchase of a Property  Interest in oil and gas producing
properties.  During  1996  approximately  78% of the  Partnership's  revenue was
attributable to natural gas production. The Operating Partnership has, from time
to time, performed workovers and recompletions of wells in which the Partnership
has Property Interests, using funds advanced


                                        7





by the Managing General Partner to perform these operations,  a portion of which
amounts has been subsequently repaid from production.

      The  Limited  Partners  have  made  contributions  of  $2,930,379  in  the
aggregate  to the  Partnership.  The Managing  General  Partner has made capital
contributions  with  respect to its  general  partnership  interest  of $23,340.
Additionally,  pursuant to the  presentment  right set forth in Article XVIII of
the Partnership Agreement, it purchased 1,214 Units from Limited Partners.

      From inception  through  January 31, 1997, the  Partnership  has made cash
distributions to its Limited Partners totaling  $1,391,400.  Through January 31,
1997,  the Managing  General  Partner has received cash  distributions  from the
Partnership of $129,299 with respect to its general  partnership  interest,  and
distributions of $5,202 related to its limited partnership  interests.  On a per
Unit basis,  Limited Partners had received,  as of January 31, 1997,  $47.48 per
$100 Unit, or approximately 47.48% of their initial capital contributions.

      The Partnership acquired its Property Interests at a time when oil and gas
prices and industry  projections of future prices were much higher than actually
occurred  in  subsequent  years.  As  detailed  in  the  Designated   Properties
Supplement dated October 18, 1990 regarding Property Interests to be acquired by
the Partnership,  when the Managing General Partner projected future oil and gas
prices to evaluate the economic  viability  of an  acquisition,  it compared its
forecasts  with  those made by banks,  oil and gas  industry  sources,  the U.S.
government,  and other companies  acquiring  producing  properties.  Acquisition
decisions for the Partnership were based upon a range of increasing  prices that
were within the  mainstream of the forecasts made by these outside  parties.  At
the time that the Partnership's Property Interests covering producing properties
were acquired,  prices averaged about $22.88 per barrel of oil and $2.15 per Mcf
of natural gas. Oil and gas prices were expected to escalate  during  subsequent
years of the Partnership's  operations.  In general, in 1990 and early 1991, all
of these sources forecasted increases in product prices that were based upon oil
and gas prices at the time,  which  reflected  the invasion of Kuwait by Iraq in
the summer of 1990 and the  commencement of hostilities in the Gulf War in 1991.
The majority of the  Partnership's  Property  Interests were acquired during the
fourth  quarter of 1990 and the first  quarter of 1991 when current  prices were
predicted to escalate  according to certain parameters from that level. Thus the
majority of properties were bought upon an evaluated  weighted  average price of
$2.15 per Mcf.  The  predicted  price  increases  did not occur and prices  fell
precipitously  from late 1991 to 1992.  The bulk of the  Partnership's  reserves
were produced from 1991-1995 during which time the  Partnership's  oil prices in
fact averaged  $16.37 per barrel and natural gas prices  averaged  approximately
$1.75 per Mcf.

      The  following  graphs  illustrate  the above  factors with respect to gas
revenues only, due to the fact that a substantial  majority of the Partnership's
production to date being natural gas, the bulk of which was produced  during the
years when gas prices were the lowest.



                                        8







                           PRICE VECTORS
                      ------------------------
                                 GAS
                               PER MCF
                      ------------------------
YEAR                  ACTUAL          EXPECTED            YEAR            MCFE
- - - ----                  ------          --------            ----           ------
                                                                
1991                   1.61             2.38              1991           458982
1992                   1.82             2.84              1992           342701
1993                   1.97             3.39              1993           259909
1994                   1.92             3.59              1994           225786
1995                   1.46             3.81              1995           177070
1996                   2.05             4.04              1996           150063


GRAPHIC  OMITTED  (Comparison  of Gas  Prices  Expected  in 1990  to Gas  Prices
Actually Received). Represented by table above.

GRAPHIC OMITTED (Amounts of Production to Date Produced by Year). Represented by
table above.

      In  addition  to the effect of prices,  Partnership  performance  has been
impacted by subsequent enhancement activities which were undertaken by the third
party operator of certain  properties in which the Operating  Partnership held a
working interest. The benefit of these enhancement activities was reduced by the
need to repay the costs incurred for these enhancements. The recoupment of costs
took much longer than anticipated due to lower than


                                        9





expected  prices  subsequent  to completion  of these  activities.  Furthermore,
capital limitations resulted in the Partnership's interests in these wells being
relatively  small  and they  thus did not have a major  positive  effect  on the
Partnership's overall performance.

      Lower  prices also had an effect on the  Partnership's  interest in proved
reserves.  Estimates  of proved  reserves  represent  quantities  of oil and gas
which,  upon analysis of engineering  and geologic data,  appear with reasonable
certainty  to be  recoverable  in the future  from known oil and gas  reservoirs
under  existing  economic and operating  conditions.  When economic or operating
conditions  change,  proved reserves can be revised either up or down. If prices
had  risen  as  predicted,  the  volumes  of  oil  and  gas  reserves  that  are
economically  recoverable  might  have  been  higher  than the  year-end  levels
actually reported because higher prices typically extend the life of reserves as
production  rates from mature wells  remain  economical  for a longer  period of
time. Production  enhancement projects that are not economically feasible at low
prices can also be implemented as prices rise. At present,  because of the small
remaining  amount  of  reserves,  further  price  increases  would  not  have  a
significant impact on the Partnership's performance.

      As required by the Partnership Agreement,  the Partnership expended all of
the partners' net commitments available for property acquisitions many years ago
to acquire  Property  Interests in  producing  oil and gas  properties.  The net
profits paid by the Operating  Partnership to the Partnership  have been reduced
by amounts used by the Operating  Partnership  to pay operating and  enhancement
costs to the third party operator.  These costs relate to the working  interests
that were  subject to the  Partnership's  net  profits  interest.  The  Managing
General  Partner  of the  Operating  Partnership  advanced  most of these  costs
because  it  felt  that  such  expenditures  would  increase  the  value  of the
properties  in which  the  Partnership  and the  Operating  Partnership  have an
interest.  Neither the  Operating  Partnership's  partnership  agreement nor the
Partnership's  partnership  agreement  allow  additional  assessments to be made
against any Limited  Partners.  No funds are  available at the current time from
Partnership  revenues  or  other  sources  to  enable  the  Partnership  to make
additional capital expenditures and no new capital expenditures are planned. The
Managing  General  Partner  anticipates  that  if  sales  of  the  Partnership's
properties  occur,  there will be sufficient  cash generated by the sales of the
Partnership's properties to make a final liquidating distribution.

Estimates of Liquidating Distribution Amount

      It is not possible to accurately  predict the prices at which the Property
Interests  will be sold.  The  sales  price  of the  Partnership's  net  profits
interest or possibly  multiple  net profits  interests  may vary.  In the latter
case,  certain Property Interests might sell for a higher price and others for a
lower price than those  estimated  below.  The  projected  range of sales prices
below has been based upon  estimated  future net revenues for the  Partnership's
Property  Interests,   using  estimates  of  1997  average  prices  without  any
escalation. The future net revenues from production of such properties have then
been  discounted  to present value at 10% per annum.  These pricing  assumptions
vary from those mandated by the Securities and Exchange  Commission  ("SEC") for
reserves  disclosures under applicable SEC rules, which require use of prices at
year-end, although


                                       10





the discount rate and lack of escalation  are the same. If estimates of reserves
and future net revenues had been  prepared  using  December 31, 1996 prices,  as
mandated by the SEC, reserves, future net revenues and the present value thereof
would be significantly  higher.  The Managing General Partner has determined not
to use these higher prices because current estimates of 1997 average prices more
accurately  reflect prices  purchasers of properties are willing to pay,  rather
than higher  values which do not reflect the  decrease in prices since  year-end
1996. For example, the weighted average price of gas received by the Partnership
for the first quarter of 1997 was $2.92 per Mcf, as compared to $4.68 per Mcf at
December 31,  1996.  For the lower end of such  projected  sales  proceeds,  the
estimated sales proceeds have been further  discounted to 70% of those shown for
the higher end of the range.

      Set forth in the table below are estimated  proceeds that the  Partnership
may realize from sales of the Partnership's  properties,  estimated  expenses of
the related  dissolution and liquidation of the  Partnership,  and the estimated
amount of net  distributions  available for Limited Partners as a result of such
sales.

           Range of Limited Partners' Share of Estimated Distributions
                       from Property Sales and Liquidation



                                                                                      Projected Range
                                                                              -----------------------------
                                                                                 Low                High
                                                                              ---------           ---------
                                                                                                  
Net Sales Proceeds(1)                                                         $ 471,000           $ 636,500
Partnership Dissolution Expenses(2)                                             (18,000)            (18,000)
                                                                              ---------           ---------
Net Distributions payable to Limited Partners                                 $ 453,000           $ 618,500
                                                                              =========           =========

Net Distributions per $100 Unit                                                  $15.46              $21.11
                                                                                 ======              ======


(1)   Net of selling expenses estimated to be 7% of sales proceeds.
(2)   Includes  Limited  Partners' share of all costs  associated with
      dissolution and liquidation of the Partnership.

      If,  on the other  hand,  the  Partnership  were to  retain  its  Property
Interests and continue to produce those properties  until  depletion,  the table
below  estimates the return to Limited  Partners,  discounted to present  value,
based upon the same pricing and discount  assumptions  used above. The estimates
of the present value of future net  distributions  have been further  reduced by
continuing audit, tax return preparation and reserve engineering fees associated
with continued operations of the Partnership,  along with direct and general and
administrative  expenses  estimated to occur during this time. Such estimates do
not take  into  account  any sale of a  portion  of the  Partnership's  Property
Interests necessary in order to generate sufficient cash proceeds to pay


                                       11





general,  administrative and operating expenses, which would reduce the revenues
of the Partnership. Moreover, the following estimated future net revenues do not
take into  account  any growth in excess  costs  which  might be incurred by the
Partnership's companion partnership due to needed future maintenance or remedial
work on the properties in which the Partnership has an interest.

                      Estimated Share of Limited Partners'
                   Net Distributions from Continued Operations



                                                                         Projected
                                                                        Cash Flows
                                                                       -----------
                                                                            
Future Net Revenues from Net Profits Interest (over 20                 $ 1,022,500
years)(1)
Partnership Direct and Administrative Expenses(2)                          (64,700)
                                                                       -----------

Net Distributions to Limited Partners (payable over 20                 $   957,800
years)(3)                                                              ===========

Net Distributions per $100 Unit(4)                                         $ 32.69
Present Value of Net Distributions per $100 Unit(5)                        $ 22.02


(1)   Limited  Partners' future net revenues are based on the reserve  estimates
      at December 31, 1996 assuming  unescalated  prices based on predictions of
      1997  average  prices.  To a limited  extent,  future net  revenues may be
      influenced by a material  change in the selling  prices of oil or gas. For
      further  discussion of this,  see "--Reasons for the Proposal." The actual
      prices that will be received and the associated  costs may be more or less
      than  those  projected.   See  "The   Partnership--Partnership   Financial
      Condition and Performance."
(2)   Includes Limited Partners' share  of  general and administrative expenses,
      and audit, tax, and reserve engineering fees.
(3)   Based upon the  Partnership's  reserves  having a projected  20-year life,
      assuming flat  pricing.  To a limited  extent,  net  distributions  may be
      influenced by a material  change in the selling  prices of oil or gas. For
      further  discussion of this,  see "--Reasons for the Proposal." The actual
      prices that will be received and the associated  costs may be more or less
      than those projected.
(4)   Does not reflect effect of intermittent sales of Property Interests to pay
      administrative  costs once the  properties no longer  generate  sufficient
      revenues to cover such costs.
(5)   Discounted at 10% per annum.

      Among  factors  which can affect the  ultimate  sales price  received  for
Partnership Property Interests are the following:

      (1)    The above cases presume that  100%  of  the  Partnership's Property
             Interests will be sold.


                                       12





      (2)    In certain instances, the Partnership,  together with the Operating
             Partnerships  which will be offering  its  working  interest in the
             properties in which the Partnership owns a Property Interest,  will
             own a  large  enough  interest  in  the  properties  to  allow  the
             purchaser  to  designate a new  operator of the  properties,  which
             normally increases the amount that a purchaser is willing to pay.
      (3)    Changes  in the  market  for  gas or oil  may  affect  the  pricing
             assumptions  used by purchasers in  evaluating  property  value and
             possible purchase prices.
      (4)    Different  evaluations  of the amount of money required to be spent
             to enhance or maintain  production  may have a  significant  effect
             upon the ultimate purchase price.
      (5)    In certain instances,  the Managing General Partner may set minimum
             bidding prices for those properties  offered at auction,  which may
             not be met.
      (6)    The  Managing  General  Partner may choose to package  certain less
             attractive  properties  together with other  properties in order to
             enhance the likelihood of their sale.  Such packaging  could result
             in a significant discount by prospective purchasers of the value of
             the  Partnership's  more  productive  properties  contained in such
             packages.

      The Partnership  Agreement authorizes the Managing General Partner to sell
the Partnership  Property Interests at a price that the Managing General Partner
deems  reasonable.  The  proceeds  of all  sales,  to the extent  available  for
distribution,  are to be  distributed  to the Limited  Partners  and the General
Partners in  accordance  with  Article  XVI.E of the  Partnership  Agreement  as
follows.  After use of available  proceeds from  property  sales to reserves for
contingent or unforeseen liabilities of the Partnership,  the proceeds are to be
used to repay the capital  accounts of the Partners whose capital  accounts have
not yet been repaid.  The amounts finally  distributed will depend on the actual
sales prices received for the Partnership  assets,  results of operations  until
such sales and other contingencies and circumstances.

Comparison of Sale Versus Continuing Operations

      Based on the above tables,  it is estimated  that a Limited  Partner could
expect to receive from $15.46 to $21.11 per $100 Unit upon immediate sale of the
Partnership  Property Interests.  In comparison,  it is estimated that a Limited
Partner could expect to receive  approximately $22.02 per $100 Unit,  discounted
to present  value  ($32.69  per $100 Unit in actual  dollars on an  undiscounted
basis) over the life of its Property  Interests,  approximately 20 years, if the
Partnership continued operations.

      Such estimates are based on December 31, 1996 reserve  estimates  assuming
unescalated pricing throughout the remaining life of the properties in which the
Partnership  owns an interest.  The actual  prices that will be received and the
associated  costs may be more or less than those  projected.  See "--Estimate of
Liquidating Distribution Amount."



                                       13





Reasons for the Proposal

      The Managing  General Partner  believes that it is in the best interest of
the  Partnership  and the  Limited  Partners  for the  Partnership  to sell  its
properties  at this  time  and to  dissolve  the  Partnership  and  make a final
liquidating cash distribution to its partners for the reasons discussed below.

      Small Amount of Remaining  Assets in Relation to Expenses.  As of December
31, 1996,  approximately 72% of the Partnership's  ultimate recoverable reserves
had been produced, and the Limited Partners' share of the Partnership's interest
in remaining  reserves,  before any reduction for costs, is estimated to be less
than 604,000 Mcfe. The Partnership's  share of oil and gas reserves are expected
to continue to decline as remaining  reserves  are  produced.  Distributions  to
partners  in  recent  years  have  declined  and are not  expected  to  increase
appreciably. Declines in well production are based principally upon the maturity
of the wells,  not on market  factors.  Each  producing  well requires a certain
amount of overhead costs,  as operating and other costs are incurred  regardless
of the level of production.  Likewise,  general and administrative expenses such
as compliance with the securities laws, producing reports to partners and filing
partnership tax returns do not decline as revenues  decline.  As a result of the
depletion  of the  Partnership's  oil and gas  reserves,  the  Managing  General
Partner believes the Partnership's  asset base and future net revenues no longer
justify the  continuation  of  operations.  Consequently,  the Managing  General
Partner expects that the Partnership will have to start selling a portion of its
Property Interests to pay the expenses of future operations and  administration.
By accelerating the liquidation of the Partnership,  those future administrative
costs  can be  avoided  and the  receipt  of the  remaining  cash  value  of the
interests of the Limited Partners in the Partnership can be accelerated.

      Effect of Gas Prices on Value.  The Managing General Partner believes that
the key factor affecting the  Partnership's  long-term  performance has been the
decrease in oil and gas prices that  occurred  subsequent to the purchase of the
Partnership's  properties.  Based on 1996  year-end  reserve  calculations,  the
Partnership had only about 28% of its ultimate recoverable reserves,  before any
reduction  for costs,  remaining  for future  production.  Because of this small
amount of remaining reserves, even if oil and gas prices were to increase in the
future,  such increases  would be unlikely to have a net positive  impact on the
total  return on  investment  to the  partners  in view of the  expenses  of the
Partnership as described above.

      Potential  of  the  Properties.   Recovery  in  amounts  great  enough  to
significantly  impact  the  results  of the  Partnership's  operations  and  the
ultimate cash  distributions  can only occur with the investment of new capital.
As provided in the Partnership  Agreement,  the Partnership  expended all of the
partners' net commitments  for the acquisition of Property  Interests many years
ago,  and it no longer has capital to invest in  improvement  of the  properties
through secondary or tertiary recovery. No additional development activities are
contemplated  by the  Operating  Partnership  on the  properties  in  which  the
Partnership has a non-operating interest.



                                       14





      Orderly Sale of Properties  Through Approval of the Proposal.  The oil and
gas market is volatile, making the sale of the properties at optimal prices very
time  sensitive.  Therefore,  the Managing  General  Partner  believes  that the
Partnership  should  liquidate and have the  flexibility  to sell its properties
when such sales appear to be most advantageous to the Partnership.  The approval
of the Proposal as it is set forth will provide the Managing General Partner the
flexibility to sell the remaining  properties in an orderly  fashion to maximize
the potential return to the Limited Partners. The approval of the Proposal would
also allow the Managing  General Partner to begin the winding up and dissolution
of the  Partnership  following  the  final  sale of  Partnership  property.  The
approval of the  Proposal  will act as the  approval  of all future  asset sales
without  the  approval by the Limited  Partners  of the  specific  terms of such
future sales.

      Limited Partners' Tax Reporting.  Limited Partners will continue to have a
partnership income tax reporting obligation with respect to his Units as long as
the Partnership continues to exist. There is no trading market for the Units, so
Limited Partners  generally are unable to dispose of their  interests.  See "The
Partnership - No Trading  Market." The approval of the Proposal would also allow
the  Managing  General  Partner to begin the winding up and  dissolution  of the
Partnership. Following the approval of the Proposal and the dissolution and sale
of the  properties,  the  Limited  Partners  will  recognize  gain  or loss or a
combination  of both  under the  federal  income tax laws.  Thereafter,  Limited
Partners  will have no further tax  reporting  obligations  with  respect to the
Partnership. The dissolution of the Partnership will also allow Limited Partners
to take a capital loss  deduction for  syndication  costs incurred in connection
with formation of the Partnership. See "Federal Income Tax Consequences."

Simultaneous Proposal to Operating Partnerships

      Simultaneously with this proposal to the Partnership's Limited Partners to
sell all of its  Property  Interests,  a similar  proposal  is being made to the
limited partners of the companion  Operating  Partnership which owns the working
interest in the same  properties in which the  Partnership  owns a non-operating
interest.  If both Partnerships approve the proposal,  then the working interest
and non-operating interest will be sold simultaneously.

      If the  Partnership  approves  the proposal  but its  companion  Operating
Partnership does not, then the Managing General Partner will attempt to sell the
Non-Operating Interest owned by the Partnership to a third party. If no economic
sale can be made to a third  party,  which may occur  due to the  difficulty  in
selling a net  profits  interest  in a  property  when  operating  and  spending
decisions are controlled by another  entity,  then the Managing  General Partner
will get a fair  market  appraisal  of the value of the  Partnership's  Property
Interests and will purchase the Partnership's non-operating interests itself for
the highest price for which the Property Interests are appraised.

      If the  Partnership  does  not  approve  the  proposal  but its  companion
Operating  Partnership  approves the proposal to sell its  properties,  then the
Operating  Partnership  will be  forced  to sell its  working  interests  in its
properties subject to the net profits interest owned by the Partnership


                                       15





which burdens the Operating Partnership's properties.  Again this may affect the
saleability of the Operating Partnership's  properties due to the burden on cash
flow caused by the existence of the Partnership's net profits interest.  If this
burden  prevents an economic  sale to a third party,  then the Managing  General
Partner will again obtain a third party appraisal of the Operating Partnership's
properties and purchase those Property Interests itself.

      Therefore the likelihood of sale of the Partnership's  Property  Interests
will  be  significantly  affected  by the  ability  of the  Partnership  and its
companion  Operating  Partnership to sell their ownership  interests in the same
properties  at  approximately  the same time,  which in turn is  dependent  upon
approval of the proposal being made to the Partnership and the similar  proposal
being made  simultaneously to the companion  Operating  Partnership.  Failure to
approve the proposal by either partnership could significantly  adversely affect
the sale of properties by the other partnership to the NP/OR Agreement.

Steps to Implement the Proposal

      Following  the  approval of the  Proposal,  the Managing  General  Partner
intends to take the following steps to implement it:

         i.     Make  available to the  appropriate  persons (that is, the third
                party, if any,  handling the negotiated sales and/or the auction
                house and prospective purchasers) the following types of data:

         o      Engineering and Geological Data
                -      Production curve
                -      Completion report
                -      Historical production data
                -      Engineering well files
                -      Geological maps (if available)
                -      Logs (if available)

         o      Land/Legal Data
                -      Net Profits Interest schedule for all properties
                -      Land files
                -      Payout data

         o      Accounting Data
                -      Lease operating statements by well
                -      Gas marketing data
                -      Oil marketing data
                -      Gas balancing data



                                       16





         ii.    Pay or provide for payment of the Partnership's  liabilities and
                obligations  to  creditors  (See   --"Liquidation")   using  the
                Partnership's  cash  on  hand  and  proceeds  from  the  sale of
                Partnership properties;

         iii.   Conduct a final  accounting and distribute any remaining cash to
                the  partners  of  the   Partnership  in  accordance   with  the
                Partnership Agreement;

         iv.    Cause final  Partnership  tax  returns to be prepared  and filed
                with the Internal  Revenue Service and appropriate  state taxing
                authorities;

         v.     Distribute   to  the  Limited   Partners   final  Form  K-1  tax
                information; and

         vi.    File a Certificate of  Cancellation on behalf of the Partnership
                with the Secretary of State of the State of Texas.

      Auction. The Managing General Partner (or a third party seller) intends to
engage the O&G Clearinghouse or another similar company to conduct live auctions
for  the  sales  working   interests  of  the  Operating   Partnership  and  the
non-operating  interests of the Partnership.  The O&G  Clearinghouse (as well as
other such auction companies) is in the business of conducting  auctions for oil
and gas properties.  The O&G  Clearinghouse  establishes a data room, which they
leave open for a period of time  (generally  three to four  weeks),  after which
they hold a live auction.  The O&G Clearinghouse  requires advance  registration
for all  bidders.  Bidders may  participate  by  invitation  only,  after having
qualified  as  knowledgeable  and  sophisticated  parties  routinely or actively
engaged in the oil and gas business. The O&G Clearinghouse  publishes a brochure
regarding the properties.  The O&G  Clearinghouse  is  headquartered in Houston,
Texas. In auctions conducted by the O&G Clearinghouse,  properties are generally
grouped into small packages with a single field often comprising a property.

      Estimated Selling Costs. The expenses  associated with the auction process
(auctioneer's  fee plus  advertising  fee) is expected to be approximately 7% of
the sales price received.  This does not include  internal costs of the Managing
General  Partner with respect to the sales,  nor fees owed to third  parties for
services  incident to the sale.  For example,  if the Managing  General  Partner
engaged a third party to sell the  properties,  this would entail an  additional
fee (although in such a case the Managing General Partner's internal costs would
be lower). This also does not include the costs of the proxy  solicitation.  See
"General Information--Solicitation."

      Negotiated  Sale.  Although the Managing  General Partner intends to offer
the Partnership's and the Operating Partnership's Property Interests at auction,
it is possible  that the Managing  General  Partner or a third party engaged for
the purpose of selling the  Partnership's  assets may approach other oil and gas
companies  and  negotiate a sale of certain  Property  Interests.  The  Managing
General  Partner  (or such  third  party)  may  solicit  bids on the oil and gas
properties  for which the  Managing  General  Partner  is the  operator.  If the
Managing  General  Partner (or third party)  solicits  bids, it will provide all
interested parties with information about the properties


                                       17





needed to bid on such properties.  Such  information  would include raw data and
historical  information  on all  of  the  operated  properties  that  any of the
partnerships  managed by the  Managing  General  Partner  intends  to sell.  See
"--Steps to  Implement  the  Proposal."  The data will be organized by property.
None  of the  Managing  General  Partner's  other  partnerships  managed  by the
Managing  General  Partner or  affiliates of the Managing  General  Partner will
purchase any of the  properties  in this  manner.  In the event of a bid that is
lower than a price the Managing General Partner  believes is reasonable,  it may
sell the property to a third party bidder for such lower bid price,  use another
method of sale such as an auction, or have the Partnership continue to hold such
property  for a while  longer.  If the property has no  appreciable  value,  the
Managing  General  Partner may dispose of such  property by  conveying it to the
operator or by conveying  the property to itself,  for no  consideration.  In no
event is the Managing General Partner  obligated to purchase any of the Property
Interests.

      Other. Any sale of the Partnership  Property  Interests and the subsequent
liquidating  distributions  to the  Limited  Partners,  if any,  pursuant to the
Proposal will be taxable  transactions  under federal and state income tax laws.
See "Federal Income Tax Consequences."

Impact on the Managing General Partner

      The Managing General Partner will be economically  impacted by liquidation
in at  least  two  ways.  First,  to the  extent  of  its  ownership  of  Units,
liquidation  will have the same  effect on it as on the  Limited  Partners.  See
"--Estimate  of  Liquidating  Distribution  Amount," and  "--Estimated  Share of
Limited Partners' Net Distributions from Continued  Operations." Second, because
of the dissolution and liquidation of the Partnership, together with liquidation
of other  partnerships,  the  Managing  General  Partner will no longer hold the
majority  interest  in  various  wells.  Different  operators  are  likely to be
selected and the Managing  General  Partner will therefore lose revenues that it
currently realizes from its role as operator for those properties.  The Managing
General Partner is making its  recommendations  as set forth below, on the basis
of its fiduciary duty to the Limited  Partners,  rather than on the basis of the
direct economic impact on the Managing General Partner.

Recommendation' of the Managing General Partner

      For the foregoing  reasons,  the Managing General Partner believes that it
is in the best  interests of the Limited  Partners to dissolve and liquidate the
Partnership  in an effort to maximize the value of the  Partnership's  remaining
assets and the amounts  distributed  to Limited  Partners and to accelerate  the
receipt of such liquidating distributions. The Managing General Partner believes
that through the liquidation of the  Partnership's  remaining assets in the near
term,  Limited  Partners will benefit from the current  higher levels of oil and
gas prices and therefore,  may receive a greater  liquidating cash  distribution
than if the Partnership  were to continue to operate as a going concern,  and be
subject to possible future negative changes in oil and gas prices. Additionally,
distribution amounts may be affected by the anticipated continuation of declines
in revenues and the continuing  relatively fixed general and  administrative and
operating expenses that


                                       18





will be incurred by the  Partnership.  Termination of the Partnership will allow
the  current  receipt  of  the  remaining  value  of  the  Partnership  and  the
preparation of a final tax return,  and will make available  certain  additional
tax deductions.

      The Managing General Partner recommends that the Limited Partners vote FOR
the Proposal.


                         FEDERAL INCOME TAX CONSEQUENCES

General

      The following  summarizes  certain federal income tax  consequences to the
Limited Partners arising from the Partnership's proposed sale of its oil and gas
properties  and  liquidation  pursuant  to the  Proposal.  Statements  of  legal
conclusions regarding tax consequences are based upon relevant provisions of the
Internal  Revenue  Code of 1986,  as  amended  (the  "Code"),  and  accompanying
Treasury  Regulations,  as in effect on the date  hereof,  upon  private  letter
rulings  dated  October 6, 1987 and  August 22,  1991,  upon  reported  judicial
decisions  and  published   positions  of  the  Internal  Revenue  Service  (the
"Service"),  and upon further  assumptions  that the  Partnership  constitutes a
partnership for federal tax purposes and that the Partnership will be liquidated
as described herein. The laws, regulations,  administrative rulings and judicial
decisions  which  form  the  basis  for  conclusions  with  respect  to the  tax
consequences  described  herein are complex and are  subject to  prospective  or
retroactive  change at any time and any  change  may  adversely  affect  Limited
Partners.

      This  summary  does not  describe  all the tax  aspects  which may  affect
Limited  Partners  because  the tax  consequences  may vary  depending  upon the
individual  circumstances  of a Limited  Partner.  It is  generally  directed to
Limited  Partners that are qualified  plans and trusts under Code Section 401(a)
and individual retirement accounts ("IRAs") under Code Section 408 (collectively
"Tax Exempt  Plans") and that are the original  purchasers of the Units and hold
interests in the Partnership as "capital assets"  (generally,  property held for
investment).  Each Limited  Partner  that is not a  tax-exempt  Plan is strongly
encouraged to consult its own tax advisor as to the rules which are specifically
applicable  to it.  Except as  otherwise  specifically  set forth  herein,  this
summary  does not  address  foreign,  state or local  tax  consequences,  and is
inapplicable  to nonresident  aliens,  foreign  corporations,  debtors under the
jurisdiction  of a  court  in a  case  under  federal  bankruptcy  laws  or in a
receivership,  foreclosure  or similar  proceeding,  or an  investment  company,
financial institution or insurance company.



                                       19





Tax Treatment of Tax Exempt Plans

      Sale of Property Interest and Liquidation of Partnership

      The  Managing  General  Partner  is  proposing  to sell the  Partnership's
Property  Interest as well as any other  royalties and overriding  royalties the
Partnership may own. After the sale of the properties,  the Partnership's assets
will  consist  solely of cash,  which will be  distributed  to the  partners  in
complete liquidation of the partnership.

      Tax Exempt Plans are subject to tax on their  unrelated  business  taxable
income ("UBTI"). UBTI is income derived by an organization from the conduct of a
trade or business  that is  substantially  unrelated to its  performance  of the
function that constitutes the basis of its tax exemption (aside from the need of
such organization for funds).  Royalty interests,  dividends,  interest and gain
from  the   disposition   of  capital   assets  are   generally   excluded  from
classification as UBTI. Notwithstanding these exclusions,  royalties,  interest,
dividends,  and gains will create UBTI if they are received  from  debt-financed
property, as discussed below.

      The Internal Revenue Service has previously  ruled that the  Partnership's
Property  Interest,  as  structured  under the NP/OR,  is a royalty,  as are any
overriding  royalties the  Partnership  may own. To the extent that the Property
Interest  is not  debt-financed  property,  neither  the  sale  of the  Property
Interest by the  Partnership  nor the liquidation of the Partnership is expected
to cause Limited Partners that are Tax Exempt Plans to recognize taxable gain or
loss for federal income tax purposes, even though there may be gain or loss upon
the sale of the Property Interest for federal income tax purposes.

      Debt-Financed Property

      Debt-financed  property is property held to produce income that is subject
to acquisition indebtedness.  The income is taxable in the same proportion which
the  debt  bears  to the  total  cost  of  acquiring  the  property.  Generally,
acquisition  indebtedness is the unpaid amount of (i) indebtedness incurred by a
Tax Exempt  Plan to acquire an  interest  in a  partnership,  (ii)  indebtedness
incurred in acquiring  or improving  property,  or (iii)  indebtedness  incurred
either  before  or after the  acquisition  or  improvement  of  property  or the
acquisition of a partnership  interest if such indebtedness  would not have been
incurred but for such acquisition or improvement,  and if incurred subsequent to
such  acquisition  or  improvement,  the  incurrence  of such  indebtedness  was
reasonably   foreseeable  at  the  time  of  such  acquisition  or  improvement.
Generally, property acquired subject to a mortgage or similar lien is considered
debt-financed  property even if the organization acquiring the property does not
assume  or agree to pay the debt.  Notwithstanding  the  foregoing,  acquisition
indebtedness  excludes certain  indebtedness  incurred by Tax Exempt Plans other
than IRAs to acquire or improve  real  property.  Although  this  exception  may
apply,  its usefulness may be limited due to its technical  requirements and the
fact that the debt  excluded from  classification  as  acquisition  indebtedness
appears to be debt incurred by a partnership  and not debt incurred by a partner
directly or indirectly in acquiring a partnership interest.



                                       20





      If a Limited  Partner  that is a Tax Exempt  Plan  borrowed to acquire its
Partnership  interest or had borrowed  funds either  before or after it acquired
its Partnership Interest,  its pro rata share of Partnership gain on the sale of
the Property  Interest may be UBTI. The Managing General Partner has represented
that  (i) the  Partnership  did not  borrowed  money  to  acquire  its  Property
Interest,  and (ii) that the Property Interest of the Partnership is not subject
to any debt,  mortgages  or  similar  liens  that will  cause the  Partnership's
Property Interest to be debt-financed  property under Code Section 514. If a Tax
Exempt  Plan  has  not  caused  its  Partnership  Interest  to be  debt-financed
property,  and based  upon the  representations  of the  Managing  General,  the
Property Interest is not expected to be considered debt-financed property.

Tax  Treatment  of  Limited  Partners  Subject  to  Federal  Income  Tax  Due to
Debt-financing or Who are Not Tax Exempt Plans

      All references  hereinbelow to Limited  Partners  refers solely to Limited
Partners  that  either are not Tax Exempt  Plans or are Tax Exempt  Plans  whose
Partnership  Interest is  debt-financed.  To the extent that a Tax Exempt Plan's
Partnership Interest is only partially debt-financed,  the percentage of gain or
loss from the sale of the Property  Interest and  liquidation of the Partnership
that will be subject to  taxation  as UBTI is the  percentage  of the Tax Exempt
Plan's share of Partnership  income,  gain,  loss and deduction  adjusted by the
following  calculation.   Section  514(a)(1)  includes,  with  respect  to  each
debt-financed  property,  as gross income from an unrelated trade or business an
amount which is the same percentage of the total gross income derived during the
taxable year from or on account of the  property as (i) the average  acquisition
indebtedness  for the taxable  year with  respect to the property is of (ii) the
average  amount of the adjusted  basis of the  property  during the period it is
held by the organization during the taxable year (the "debt/basis percentage").

      A similar calculation is used to determine the allowable  deductions.  For
each debt-financed  property, the amount of the deductions directly attributable
to the property are  multiplied by the debt/basis  percentage,  which yields the
allowable  deductions.  If the average acquisition  indebtedness is equal to the
average adjusted basis, the debt/basis percentage is zero and all the income and
deductions are included within UBTI. The debt/basis  percentage is calculated on
an annual basis.

      Tax Exempt Plans with debt-financed  Partnership  Interests should consult
their  tax  advisors  to  determine  the  portion  of gain or loss  that  may be
recognized for federal income tax purposes.  The following discussion of the tax
consequences  of  the  sale  of  the  Partnership   Property  Interest  and  the
liquidation of the Partnership  assumes that all of a Limited  Partner's income,
gain, loss and deduction from the Partnership is subject to federal taxation.

Taxable Gain or Loss Upon Sale of Properties

      A  Limited  Partner  will  realize  and  recognize  gain  or  loss,  or  a
combination of both,  upon the  Partnership's  sale of its  properties  prior to
liquidation.  The amount of gain  realized  with  respect to each  property,  or
related asset,  will be an amount equal to the excess of the amount  realized by
the  Partnership   and  allocated  to  the  Limited   Partner  (i.e.,   cash  or
consideration  received) over the Limited Partner's  adjusted tax basis for such
property. Conversely, the amount of loss


                                       21





realized  with respect to each property or related asset will be an amount equal
to the excess of the Limited Partner's tax basis over the amount realized by the
Partnership  for such  property  and  allocated  to the Limited  Partner.  It is
projected  that  taxable  loss  will be  realized  upon the sale of  Partnership
properties  and that such loss will be allocated  among the Limited  Partners in
accordance with the Partnership Agreement. The Partnership Agreement includes an
allocation provision that requires allocations pursuant to a liquidation be made
among Partners in a fashion that equalizes  capital  accounts of the Partners so
that the amount in each  Partner's  capital  account will reflect such Partner's
sharing ratio of income and loss.  The extent to which  capital  accounts can be
equalized,  however,  is limited by the amount of gain and loss  available to be
allocated.

      Because the properties  owned by the  Partnership are properties used in a
trade or business,  the  character of gains and losses  realized by the Partners
generally  will  be  governed  by  Section  1231  of the  Code.  Deductions  for
intangible drilling and development costs,  depletion and depreciation  expenses
with  respect to these  properties,  however,  may be subject  to  recapture  as
ordinary  income,  in an amount  which does not  exceed  gain  recognized.  Code
Section  1254  recaptures  all  intangible  drilling and  development  costs and
depletion (to the extent of basis) as ordinary  income.  The Partnership did not
incur  material  amounts of  intangible  drilling  and  development  costs,  and
accordingly  the  recapture  of same is not  expected  to be material if gain is
recognized.

      Realized gains and losses generally must be recognized and reported in the
year the sale  occurs.  Accordingly,  each  Limited  Partner  will  realize  and
recognize his  allocable  share of gains and losses in his tax year within which
the Partnership properties are sold. Each Limited Partner's recognized allocable
share of the net  Partnership  1231  gains or losses  must be  netted  with that
Limited Partner's individual section 1231 gains and losses recognized during the
year in order to determine  the  character of such net gains or net losses under
section  1231.  Net gains will be treated as capital  gains except to the extent
recharacterized  as  ordinary  income due to  recapture  and net losses  will be
treated as ordinary losses.

Liquidation of the Partnership

      After sale of its properties, 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.  If the amount of cash distributed to a Limited Partner
in  liquidation  is less than such Limited  Partner's  adjusted tax basis in his
Partnership  interest,  the Limited Partner will realize and recognize a capital
loss to the extent of the excess.  If the amount of cash  distributed is greater
than such Limited Partner's adjusted tax basis in his Partnership interest,  the
Limited  Partner  will  recognize  a capital  gain to the extent of the  excess.
Because each Limited  Partner paid a portion of syndication  and formation costs
upon entering the Partnership,  neither of which costs were deductible expenses,
it is anticipated  that  liquidating  distributions  to Limited Partners will be
less than such Limited Partners' bases in their  Partnership  interests and thus
will generate capital losses.



                                       22





Capital Gains Tax

      Net  long-term  capital gains of  individuals,  trusts and estates will be
taxed at a maximum rate of 28%, while ordinarily  income,  including income from
the recapture of intangible  drilling and development  costs,  depreciation  and
depletion,  will be taxed at a maximum rate depending on that Limited  Partner's
taxable income of 36% or 39.6%.  With respect to net capital losses,  other than
Section 1231 net losses,  the amount of net  long-term  capital loss that can be
utilized  to offset  ordinary  income  will be limited to the sum of net capital
gains from other sources  recognized by the Limited Partner during the tax year,
plus  $3,000  ($1,500,  in the case of a married  individual  filing a  separate
return).  The excess  amount of such net  long-term  capital loss may be carried
forward  and  utilized  in  subsequent  years  subject to the same  limitations.
Corporations are taxed on net long-term  capital gains at their ordinary Section
11 rates and are  allowed  to carry net  capital  losses  back  three  years and
forward five years.

Passive Loss Limitations

      Limited  Partners  that are  individuals,  trusts,  estates,  or  personal
service  corporations are subject to the passive activity loss limitations rules
that were enacted as part of the Tax Reform Act of 1986.

      A Limited Partner's allocable share of Partnership income, gain, loss, and
deduction is treated as derived from a passive activity, except to the extent of
Partnership portfolio income, which includes interest, dividends, royalty income
and gains from the sale of  property  held for  investment  purposes.  A Limited
Partner's allocable share of any gain realized on sale of Partnership properties
(other than gain from the sale of portfolio  investments)  will be characterized
as passive  activity  income that may be offset by passive  activity losses from
other passive activity investments. Moreover, because the sale of properties and
liquidation of the Partnership will terminate the Limited Partner's  interest in
the  passive  activity,  a  Limited  Partner's  allocable  share of any loss (i)
previously  realized  as a Limited  Partner  in the  Partnership  and  suspended
because of its passive  characterization,  (ii) realized on the liquidating sale
of  Partnership  properties,  or (iii)  realized  by the  Limited  Partner  upon
liquidation of his Partnership  interest,  will not be  characterized  as losses
from a passive activity.

      THE FOREGOING  DISCUSSION IS FOR GENERAL  INFORMATION ONLY AND IS INTENDED
TO BE A SUMMARY OF CERTAIN INCOME TAX  CONSIDERATIONS  OF THE SALE OF PROPERTIES
AND  LIQUIDATION.  IT IS NOT INTENDED AS AN ALTERNATIVE  FOR TAX PLANNING.  EACH
LIMITED  PARTNER  SHOULD  CONSULT ITS OWN TAX ADVISOR  CONCERNING  THE  FEDERAL,
STATE, LOCAL, FOREIGN AND OTHER TAX CONSEQUENCES TO IT OF THE SALE OF PROPERTIES
AND THE LIQUIDATION OF THE PARTNERSHIP.




                                       23





                           BUSINESS OF THE PARTNERSHIP

      The Partnership is a Texas limited  partnership  formed December 31, 1990.
Units in the  Partnership  are registered  under Section 12(g) of the Securities
Exchange  Act of 1934.  In  addition  to the  following  information  about  the
business of the Partnership, see the attached Annual Report on Form 10-K for the
year ended  December 31,  1996,  and its  quarterly  report on Form 10-Q for the
first quarter of 1997, both included herewith.

Reserves

         For  information  about  the  Partnership's  interest  in oil  and  gas
reserves and future net revenue  expected from the  production of those reserves
as of December 31, 1996, see the attached report which was audited by H. J. Gruy
& Associates,  Inc., independent petroleum consultants.  It should be noted that
the  reserve  estimates  in the Annual  Report on Form 10-K  reflect  the entire
Partnership  reserves and that the reserve report in the attached letter from H.
J. Gruy &  Associates,  Inc.  reflects only the Limited  Partners'  share of the
Partnership's  estimated oil and gas reserves.  Neither of these reports reflect
the Partnership's share of future costs of operations which must be debited from
the  Partnership's  interest in reserves in order to determine the Partnership's
net interest in reserves by virtue of its net profits interest.  This report has
not been updated to include the effect of production  since  year-end  1996, nor
has the annual review of estimated quantities done each year-end taken place for
1997.

         There are numerous  uncertainties  inherent in estimating quantities of
proved  reserves and in  projecting  the future rates and timing of  production,
future costs and future development plans. Oil and gas reserve  engineering must
be recognized as a subjective process of estimating underground accumulations of
oil and gas that  cannot be  measured in an exact way,  and  estimates  of other
engineers  might differ from those in the attached  report.  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,  and, as a general rule, reserve estimates based upon
volumetric  analysis are  inherently  less  reliable than those based on lengthy
production history. Accordingly,  reserve estimates are often different from the
quantities of oil and gas that are ultimately recovered.

         In  estimating  the  Partnership's  interest  in oil  and  natural  gas
reserves,  the  Managing  General  Partner,  has used flat  pricing  based  upon
estimates of 1997 average prices, without escalation,  except in those instances
where fixed and  determinable  gas price  escalations  are covered by contracts,
limited  to the price the  Partnership  reasonably  expects  to  receive.  These
pricing  assumptions  vary from those  mandated by the  Securities  and Exchange
Commission  ("SEC") for reserves  disclosures under applicable SEC rules,  which
require  use of prices  at  year-end,  although  the  discount  rate and lack of
escalation  are the same.  If  estimates of reserves and future net revenues had
been prepared using December 31, 1996 prices, as mandated by the SEC,  reserves,
future net revenues and the present value thereof would be significantly higher.
The


                                       24





Managing  General  Partner has determined not to use these higher prices because
current  estimates  of  1997  average  prices  more  accurately  reflect  prices
purchasers of properties are willing to pay,  rather than higher values which do
not reflect  the  decrease in prices  since  year-end  1996.  For  example,  the
weighted  average  price of gas  received  by the  Partnership  during the first
quarter of 1997 was $2.92 per Mcf, as compared to $4.68 per Mcf at December  31,
1996.  The  Managing  General  Partner  does not believe  that any  favorable or
adverse event causing a significant  change in the estimated  quantity of proved
reserves set forth in the  attached  report has  occurred  between  December 31,
1996, and the date of this Proxy Statement.

         Future prices received for the sale of the  Partnership's  products may
be higher or lower than the prices used in the  Partnership's  estimates  of oil
and gas  reserves;  the operating  costs  relating to such  production  may also
increase or decrease from existing levels.

The Managing General Partner

      Subject to certain limitations set forth in the Partnership Agreement, the
Managing  General  Partner has full,  exclusive  and complete  discretion in the
management and control of the business of the Partnership.  The Managing General
Partner has general liability for the debts and obligations of the Partnership.

      The  Managing  General  Partner is engaged in the  business of oil and gas
exploration, development and production, and the Managing General Partner serves
as the  general  partner  of a number of other oil and gas  income  and  pension
partnerships.  The Managing General  Partner's common stock is traded on the New
York and Pacific Stock Exchanges.

      The  principal  executive  offices of the  Managing  General  Partner  are
located at 16825 Northchase Drive,  Suite 400, Houston,  Texas 77060,  telephone
number (281) 874-2700.

Transactions Between the Managing General Partner and the Partnership

      Under the Partnership Agreement, the Managing General Partner has received
certain compensation for its services and reimbursement for expenditures made on
behalf of the  Partnership,  which was paid at closing of the offering of Units,
in addition to revenues  distributable  to the  Managing  General  Partner  with
respect to its general partnership interest or limited partnership  interests it
has purchased.  In addition to those revenues,  compensation and reimbursements,
the following  summarizes the transactions  between the Managing General Partner
and the Partnership pursuant to which the Managing General Partner has been paid
or has had its expenses reimbursed on an ongoing basis:

      o  The Managing General Partner receives  per-well monthly  operating fees
         from the Operating Partnership for certain producing wells in which the
         Partnership owns Property Interests and for which it serves as operator
         in accordance with the joint operating


                                       25





         agreements  for each of such wells.  The fees that are set in the joint
         operating  agreements  are negotiated  with the other working  interest
         owners of the properties.

      o  The Managing  General Partner is entitled to be reimbursed and has been
         reimbursed for general and  administrative  costs incurred on behalf of
         and  allocable  to the  Partnership,  including  employee  salaries and
         office overhead. Amounts are calculated on the basis of Limited Partner
         capital  contributions  to the Partnership  relative to limited partner
         contributions  of all  partnerships  for  which  the  Managing  General
         Partner serves as Managing General Partner.

No Trading Market

      There is no trading market for the Units, and none is expected to develop.
Under the Partnership Agreement,  the Limited Partners have the right to present
their Units to the Managing General Partner for repurchase at a price determined
in accordance  with the formula  established by Article XVIII of the Partnership
Agreement. Originally, 279 Limited Partners invested in the Partnership. Through
December 31, 1996, the Managing  General  Partner had purchased 1,214 Units from
Limited Partners pursuant to the right of presentment.  As of May 1, 1997, there
were 277 Limited Partners (excluding the Managing General Partner). The Managing
General  Partner  does not have an  obligation  to  repurchase  Limited  Partner
interests  pursuant to this right of  presentment  but merely an option to do so
when such interests are presented for repurchase.

Principal Holders of Limited Partner Units

      The Managing  General Partner holds 4.14% of the Units of the Partnership.
To the knowledge of the Managing  General  Partner,  there is no holder of Units
that holds more than 5% of the Units.

Approvals

         No  federal  or state  regulatory  requirements  must be  satisfied  or
approvals  obtained in connection  with the sale of the  Partnership's  Property
Interests.

Legal Proceedings

         The Managing General Partner is not aware of any material pending legal
proceedings to which the  Partnership is a party or of which any of its property
is the subject.


              INCORPORATION OF CERTAIN INFORMATION BY REFERENCE AND
                      ATTACHMENT OF SUCH INFORMATION HERETO



                                       26





      The  Partnership's  Annual Report on Form 10-K for the year ended December
31, 1996,  and its quarterly  report on Form 10-Q for the first quarter of 1997,
which are attached hereto and incorporated herein by reference.


                                 OTHER BUSINESS

      The Managing  General  Partner does not intend to bring any other business
before the Meeting and has not been  informed  that any other  matters are to be
presented at the Meeting by any other person.


                                             SWIFT ENERGY COMPANY
                                             as Managing General Partner of
                                             Swift Energy Managed Pension Assets
                                             Partnership 1990-D, Ltd.

                                             By:
                                                --------------------------------
                                                John R. Alden
                                                Secretary




                                       27



                       Securities and Exchange Commission

                             Washington, D.C. 20549


                                    FORM 10-K

             [ X ] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934
                   For the fiscal year ended December 31, 1996
                                       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 33-15998-11


          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                    (Exact name of registrant as specified in
                     its Certificate of Limited Partnership)

         TEXAS                                         76-0320253
(State of Organization)                    (I.R.S. Employer Identification No.)


                         16825 Northchase Dr., Suite 400
                              Houston, Texas 77060
                                 (713) 874-2700
          (Address and telephone number of principal executive offices)


           Securities registered pursuant to Section 12(b) of the Act:
                                      None

           Securities registered pursuant to Section 12(g) of the Act:
                       29,303.79 Limited Partnership Units


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  periods that the  registrant  was
required),  and (2) has been subject to such filing requirements for the past 90
days.
                                    Yes X  No
                                       ---   ---
Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

Registrant does not have an aggregate  market value for its Limited  Partnership
Interests.

                       Documents Incorporated by Reference

Document                                           Incorporated as to

    Registration Statement No. 33-15998              Items 1 and 13
     on Form S-1




                                TABLE OF CONTENTS

                             Form 10-K Annual Report
                     For the Period Ended December 31, 1996

          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.



ITEM NO.                                    PART I                                               PAGE
                                                                                          
   1                       Business                                                               I-1
   2                       Properties                                                             I-5
   3                       Legal Proceedings                                                      I-7
   4                       Submission of Matters to a Vote of
                             Security Holders                                                     I-7

 
                                            PART II

   5                       Market Price of and Distributions on the
                             Registrant's Units and Related Limited
                             Partner Matters                                                     II-1
   6                       Selected Financial Data                                               II-2
   7                       Management's Discussion and Analysis of
                             Financial Condition and Results of Operations                       II-2
   8                       Financial Statements and Supplementary Data                           II-3
   9                       Disagreements on Accounting and Financial
                             Disclosure                                                          II-3


                                            PART III

  10                       Directors and Executive Officers of the
                             Registrant                                                         III-1
  11                       Executive Compensation                                               III-2
  12                       Security Ownership of Certain Beneficial
                             Owners and Management                                              III-2
  13                       Certain Relationships and Related Transactions                       III-2


                                            PART IV

  14                       Exhibits, Financial Statement Schedules
                             and Reports on Form 8-K                                            IV-1


                                            OTHER

                           Signatures





          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.

                                     PART I


Item 1.  Business

General Description of Partnership

         Swift Energy Managed Pension Assets Partnership  1990-D,  Ltd., a Texas
limited  partnership (the "Partnership" or the  "Registrant"),  is a partnership
formed under a public serial  limited  partnership  offering  denominated  Swift
Energy Managed  Pension Assets Fund I  (Registration  Statement No.  33-15998 on
Form S-1, originally declared effective November 13, 1987, and amended effective
November  3,  1988,   August  4,  1989  and  May  1,  1990  [the   "Registration
Statement"]).  The  Partnership was formed  effective  December 31, 1990 under a
Limited  Partnership  Agreement dated December 31, 1990. The initial 277 limited
partners made capital contributions of $2,930,379.

         The  Partnership  is  principally  engaged in the business of acquiring
nonoperating  interests  (i.e.,  net profits  interests,  royalty  interests and
overriding  royalty  interests)  in proven  oil and gas  properties  within  the
continental United States. The Partnership does not acquire working interests in
or operate oil and gas properties,  and does not engage in drilling  activities.
At December 31, 1996, the  Partnership  had expended or committed to expend 100%
of the limited partners' net commitments  (i.e.,  limited partners'  commitments
available  to  the  Partnership  for  property  acquisitions  after  payment  of
organizational  fees  and  expenses)  in  the  acquisition  and  development  of
nonoperating  interests in producing properties,  which properties are described
under Item 2,  "Properties,"  below. The Partnership's  income is derived almost
entirely from its nonoperating interests and the disposition thereof.

         The  Partnership's  business and affairs are  conducted by its Managing
General  Partner,  Swift Energy  Company,  a Texas  corporation  ("Swift").  The
Partnership's Special General Partner, VJM Corporation, a California corporation
("VJM"), consults with and advises Swift as to certain financial matters.

         The  general  manner in which  the  Partnership  acquires  nonoperating
interests  and  otherwise  conducts  its  business is described in detail in the
Registration Statement under "Proposed Activities," which is incorporated herein
by reference.  The following is intended only as a summary of the  Partnership's
manner of doing business and specific activities to date.

Manner of  Acquiring  Nonoperating  Interests  in  Properties;  Net  Profits and
Overriding Royalty Interest Agreement

         The nonoperating  interests owned by the Registrant have typically been
acquired  pursuant to a Net Profits and Overriding  Royalty  Interest  Agreement
dated December 31, 1990 (the "NP/OR Agreement") between the Registrant and Swift
Energy Income Partners 1990-D, Ltd. (the "Operating Partnership"). The Operating
Partnership  is a Texas  limited  partnership  that is also managed by Swift and
VJM. The Operating  Partnership was formed to acquire and develop  producing oil
and gas properties.

         Under the NP/OR Agreement, the Registrant and the Operating Partnership
have, in effect,  combined their funds to acquire  producing  properties.  Using
funds  committed to the NP/OR  Agreement  by both  partnerships,  the  Operating
Partnership  acquires producing  properties,  then promptly conveys nonoperating
interests therein to the Registrant. The Operating Partnership retains a working
interest in each such property, and is responsible for the production of oil and
gas therefrom. For the sake of legal and administrative  convenience,  producing
properties  are usually  acquired from the third party  sellers by Swift,  which
then  conveys  a  working  interest  in  each  such  property  to the  Operating
Partnership.  The Registrant  initially  committed  $2,494,897 and the Operating
Partnership  initially  committed  $3,059,352 for  acquisitions  under the NP/OR
Agreement.  The Operating  Partnership is obligated under the NP/OR Agreement to
convey to the  Registrant  a 45%  fixed  net  profits  interest  and a  variable
overriding  royalty  interest in specified  depths of all  producing  properties
acquired under the NP/OR Agreement.

         Under the NP/OR  Agreement,  the Operating  Partnership  is required to
convey  to  the  Registrant,   and  the  Registrant  is  required  to  purchase,
nonoperating  interests in all  producing  properties  acquired by the Operating
Partnership, except that:


                                      I-1




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


                  1. Properties  anticipated to require significant  development
operations and nonoperating  interests  offered to the Operating  Partnership by
third  parties may be purchased by the Operating  Partnership  outside the NP/OR
Agreement, without participation by the Registrant;

                  2. During a  specified  one-year  period,  the  Registrant  is
entitled to reduce the amount originally  committed by it to purchases under the
NP/OR  Agreement  and to redirect  such funds to the  purchase  of  nonoperating
interests from sources other than the Operating Partnership; and

                  3. The  Registrant's  funds  will be  released  from the NP/OR
Agreement if they are not completely spent by the Operating Partnership within a
specified  period,  or if there is a prior  withdrawal of funds by the Operating
Partnership  to  purchase   properties   anticipated   to  require   significant
development.

         Purchases of nonoperating  interests by the Registrant  using withdrawn
or  released  funds  may be made  from  the  Managing  General  Partner  and its
affiliates,   other  partnerships  affiliated  with  the  Operating  Partnership
(possibly through the Registrant's  entry into a new NP/OR  Agreement),  or from
unaffiliated third parties.

         In accordance with its  obligations  under the NP/OR  Agreement,  as of
December 31, 1996 the Operating Partnership had conveyed to the Registrant a 45%
net  profits  interest  burdening  certain  depths of all  producing  properties
acquired  by the  Operating  Partnership  thereunder.  Typically,  a net profits
interest in an oil and gas property entitles the owner to a specified percentage
share of the gross proceeds generated by the burdened property, net of operating
costs.  The net  profits  interest  conveyed to the  Registrant  under the NP/OR
Agreement differs from the typical net profits interest in that it is calculated
over  the  entire  group  of  producing  properties  conveyed  under  the  NP/OR
Agreement; i.e., all operating costs attributable to the burdened depths of such
properties are  aggregated,  and the total is then  subtracted from the total of
all gross  proceeds  attributable  to such depths in order to calculate  the net
profits to which the Registrant is entitled.  The net profits interest  conveyed
to the Registrant  burdens only those depths of each subject property which were
evaluated to contain proved reserves at the date of  acquisition,  to the extent
such depths underlie specified surface acreage.

         The Operating Partnership has also conveyed to the Registrant under the
NP/OR  Agreement  an  overriding  royalty  interests in each  property  acquired
thereunder. An overriding royalty interest is a fractional interest in the gross
production  (or the gross  proceeds  therefrom)  of oil and gas from a property,
free of any exploration,  development,  operation or maintenance expenses. Under
the NP/OR  Agreement,  the overriding  royalty  interest burdens the portions of
each producing  property that were  evaluated at the date of acquisition  not to
contain proved reserves.

Competition, Markets and Regulations

         Competition

         The oil and gas industry is highly  competitive in all its phases.  The
Partnership encounters strong competition from many other oil and gas producers,
many of which possess substantial financial resources, in acquiring economically
desirable Producing Properties.

         Markets

         The amounts of and price  obtainable  for oil and gas  production  from
Partnership  Properties will be affected by market factors beyond the control of
the  Partnership.  Such factors include the extent of domestic  production,  the
level of imports of foreign oil and gas, the general level of market demand on a
regional, national and worldwide basis, domestic and foreign economic conditions
that  determine  levels of industrial  production,  political  events in foreign
oil-producing  regions, and variations in governmental  regulations and tax laws
and  the  imposition  of new  governmental  requirements  upon  the  oil and gas
industry. There can be no assurance that oil and gas prices will not decrease in
the future, thereby decreasing net Revenues from Partnership Properties.


                                      I-2




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


         From time to time,  there may exist a  surplus  of  natural  gas or oil
supplies,  the effect of which may be to reduce the amount of hydrocarbons  that
the  Partnerships may produce and sell while such oversupply  exists.  In recent
years,  initial steps have been taken to provide  additional gas  transportation
lines from Canada to the United States. If additional Canadian gas is brought to
the United States market, it could create downward pressure on United States gas
prices.

         Regulations

         Environmental Regulation

         The federal  government  and various state and local  governments  have
adopted  laws and  regulations  regarding  the control of  contamination  of the
environment.  These laws and regulations may require the acquisition of a permit
by Operators before drilling commences,  prohibit drilling activities on certain
lands  lying  within  wilderness  areas or where  pollution  arises  and  impose
substantial  liabilities for pollution  resulting from operations,  particularly
operations near or in onshore and offshore waters or on submerged  lands.  These
laws and  regulations  may also  increase  the  costs of  routine  drilling  and
operation of wells.  Because these laws and regulations change  frequently,  the
costs to the  Partnership of compliance  with existing and future  environmental
regulations cannot be predicted.  However, the Managing Partner does not believe
that the  Partnership is affected in a significantly  different  manner by these
regulations than are its competitors in the oil and gas industry.

         Federal Regulation of Natural Gas

         The  transportation  and sale of natural gas in interstate  commerce is
heavily  regulated  by  agencies  of  the  federal  government.   The  following
discussion is intended only as a summary of the principal statutes,  regulations
and  orders  that  may  affect  the  production  and  sale of  natural  gas from
Partnership  Properties.  This  summary  should not be relied upon as a complete
review of applicable natural gas regulatory provisions.

         FERC Orders

         Several major  regulatory  changes have been implemented by the Federal
Energy Regulatory  Commission  ("FERC") from 1985 to the present that affect the
economics of natural gas production,  transportation and sales. In addition, the
FERC  continues  to  promulgate  revisions  to various  aspects of the rules and
regulations  affecting  those  segments of the natural gas industry  that remain
subject to the FERC's jurisdiction. In April 1992, the FERC issued Order No. 636
pertaining to pipeline restructuring. This rule requires interstate pipelines to
unbundle  transportation  and sales services by separately  stating the price of
each service and by providing  customers  only the particular  service  desired,
without  regard to the source for  purchase of the gas.  The rule also  requires
pipelines to (i) provide  nondiscriminatory  "no-notice"  service  allowing firm
commitment  shippers to receive  delivery of gas on demand up to certain  limits
without  penalties,  (ii) establish a basis for release and reallocation of firm
upstream  pipeline  capacity  and  (iii)  provide  non-discriminatory  access to
capacity by firm  transportation  shippers on a  downstream  pipeline.  The rule
requires interstate  pipelines to use a straight fixed variable rate design. The
rule imposes these same requirements upon storage facilities.

         FERC Order No. 500  affects the  transportation  and  marketability  of
natural gas.  Traditionally,  natural gas has been sold by producers to pipeline
companies,  which then  resold the gas to  end-users.  FERC Order No. 500 alters
this market structure by requiring  interstate  pipelines that transport gas for
others to provide  transportation  service to  producers,  distributors  and all
other shippers of natural gas on a nondiscriminatory, "first-come, first-served"
basis ("open access  transportation"),  so that producers and other shippers can
sell natural gas directly to end-users.  FERC Order No. 500 contains  additional
provisions intended to promote greater competition in natural gas markets.

         It is not anticipated  that the  marketability  of and price obtainable
for natural gas production from  Partnership  Properties  will be  significantly
affected  by FERC  Order No.  500.  Gas  produced  from  Partnership  Properties
normally  will be sold to  intermediaries  who have entered into  transportation
arrangements with pipeline companies.  These  intermediaries will accumulate gas
purchased from a number of producers and sell the gas to end-users  through open
access pipeline transportation.


                                      I-3




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


         State Regulations

         Production  of any oil  and gas  from  Partnership  Properties  will be
affected  to some  degree  by  state  regulations.  Many  states  in  which  the
Partnership will operate have statutory provisions regulating the production and
sale  of oil  and  gas,  including  provisions  regarding  deliverability.  Such
statutes, and the regulations promulgated in connection therewith, are generally
intended to prevent  waste of oil and gas and to protect  correlative  rights to
produce  oil and  gas  between  owners  of a  common  reservoir.  Certain  state
regulatory  authorities  also  regulate  the amount of oil and gas  produced  by
assigning allowable rates of production to each well or proration unit.

         Federal Leases

         Some of the Partnership's properties are located on federal oil and gas
leases  administered by various federal  agencies,  including the Bureau of Land
Management.   Various  regulations  and  orders  affect  the  terms  of  leases,
exploration and development plans, methods of operation and related matters.

Employees

         The  Partnership  has no  employees.  Swift,  however,  has a staff  of
geologists,   geophysicists,   petroleum  engineers,   landmen,  and  accounting
personnel who  administer  the  operations of Swift and the  Partnership.  As of
December 31, 1996, Swift had 191 employees.  Swift's administrative and overhead
expenses  attributable  to  the  Partnership's   operations  are  borne  by  the
Partnership.


                                      I-4




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


Item 2.  Nonoperating Interests in Properties

         As of December  31, 1996,  the  Partnership  has acquired  nonoperating
interests in producing  oil and gas  properties  which are  generally  described
below.

Principal Oil and Gas Producing Properties

         The most  valuable  fields  in the  Partnership,  based  upon  year-end
engineering  estimates of discounted  future net revenues using constant pricing
and costs, are described below.

         1. The  Velrex  Field is  located  in  Schleicher  County,  Texas,  and
accounts for 35% of the value in this  Partnership.  Wells in this field produce
from the Henderson and Canyon Sands, (Sugarland acquisition).

         The remaining  value in the  Partnership  is  attributable  to numerous
properties  none of which equals or exceeds 15 percent of the total  Partnership
value.

Title to Properties

         Title to substantially  all significant  producing  properties in which
the Partnership owns  nonoperating  interests has been examined.  In addition to
the nonoperating interests owned by the Partnership,  the properties are subject
to royalty,  overriding  royalty and other interests  customary in the industry.
The Managing  General  Partner does not believe any of these burdens  materially
detract from the value of the  properties  or will  materially  detract from the
value of the properties or materially  interfere with their use in the operation
of the business of the Partnership.

Production and Sales Price

         The following table  summarizes the sales volumes of the  Partnership's
net oil and gas production  expressed in MCFs.  Equivalent  MCFs are obtained by
converting oil to gas on the basis of their relative energy content;  one barrel
equals 6,000 cubic feet of gas.




                                                  Net Production
                                    ------------------------------------------
                                                For the Years Ended
                                                   December 31,
                                    ------------------------------------------
                                      1996             1995              1994
                                    -------           -------          -------
                                                                  
Net Volumes (Equivalent MCFs)       150,063           177,070          225,786

Average Net Nonoperating
   Interest Price per
   Equivalent MCF                   $1.39             $0.85            $1.10



                                      I-5




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


Net Proved Oil and Gas Reserves

         Presented  below are the  estimates of the  Partnership's  nonoperating
interests in proved  reserves as of December 31, 1996, 1995 and 1994. All of the
Partnership's  nonoperating  interests  in proved  reserves  are  located in the
United States.



                                                                      December 31,
                                    ------------------------------------------------------------------------------
                                            1996                          1995                        1994
                                    ----------------------       --------------------        ---------------------
                                                   Natural                    Natural                     Natural
                                       Oil          Gas            Oil          Gas           Oil           Gas
                                    --------      --------       -------      --------       -------      --------
                                     (BBLS)        (MMCF)         (BBLS)       (MMCF)         (BBLS)        (MMCF)
                                                                                           
Proved developed
   reserves at end of year            7,107           545        34,780          1,296        37,264         1,396
                                    -------         -----       -------          -----       -------         -----
Proved reserves
   Balance at beginning
     of year                         37,066         1,390        38,510          1,575        50,805         2,353

   Purchase of minerals
     in place                            --            --            --             --            --            --

   Extensions, discoveries
     and other additions                 --            --            --             --            --            --

   Revisions of previous
     estimates                        1,695            80         5,450            (49)       (4,718)         (598)

   Sales of minerals in
     place                          (26,282)         (675)           --             --            --            --

   Production                        (3,940)         (126)       (6,894)          (136)       (7,577)         (180)
                                    -------         -----       -------          -----       -------         -----

   Balance at end of year             8,539           669        37,066          1,390        38,510         1,575
                                    -------         -----       -------          -----       -------         -----



         Revisions  of  previous  quantity  estimates  are  related to upward or
downward  variations  based on current  engineering  information  for production
rates,  volumetrics and reservoir  pressure.  Additionally,  changes in quantity
estimates  are the result of the  increase  or decrease in crude oil and natural
gas prices at each year end which have the effect of adding or  reducing  proved
reserves on marginal properties due to economic limitations.


                                      I-6




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


         The following table summarizes by acquisition the Registrant's reserves
and its  nonoperating  interests in gross and net producing oil and gas wells as
of December 31, 1996:



                                                              Reserves
                                                          December 31, 1996
                                                        ---------------------

                                                                      Natural                     Wells
                                                       Oil              Gas              ----------------------
Acquisition                State(s)                  (BBLS)           (MMCF)             Gross            Net
- - - -----------                --------                  ------           -------            -----          -------
                                                                                            
Richer                     TX                             7                34                4             0.046
Hilliard                   LA                            77                48                7             0.668
Sugarland                  OK, TX                     8,094               525               56             2.410
Kerrco                     TX                           315                 1                1             0.015
Arkla                      TX                            46                61                2             0.101
                                                     ------             -----             ----             -----
                                                      8,539               669               70             3.240
                                                     ------             -----             ----             -----



         There are numerous  uncertainties  inherent in estimating quantities of
proved  reserves and in projecting  the future rates of  production,  timing and
plan of  development.  Oil and gas reserve  engineering  must be recognized as a
subjective process of estimating  underground  accumulations of oil and gas that
cannot be measured  in an exact way,  and  estimates  of other  engineers  might
differ  from  those  above,  audited  by H. J.  Gruy and  Associates,  Inc.,  an
independent petroleum consulting firm. 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,
and, as a general rule,  reserve  estimates based upon  volumetric  analysis are
inherently  less  reliable  than  those  based on  lengthy  production  history.
Accordingly,  reserve  estimates are often  different from the quantities of oil
and gas that are ultimately recovered.

         In estimating  the oil and natural gas  reserves,  the  Registrant,  in
accordance with criteria  prescribed by the Securities and Exchange  Commission,
has used prices received as of December 31, 1996 without  escalation,  except in
those instances where fixed and determinable  gas price  escalations are covered
by  contracts,  limited  to the  price the  Partnership  reasonably  expects  to
receive.  The  Registrant  does not believe that any  favorable or adverse event
causing a significant  change in the estimated  quantity of proved  reserves has
occurred between December 31, 1996 and the date of this report.

         Future prices received for the sale of the  Partnership's  products may
be higher or lower than the prices used in the evaluation  described  above; the
operating  costs relating to such  production may also increase or decrease from
existing  levels.  The estimates  presented  above are in accordance  with rules
adopted by the Securities and Exchange Commission.

Item 3. Legal Proceedings

         The Partnership is not aware of any material pending legal  proceedings
to which it is a party or of which any of its property is the subject.

Item 4. Submission of Matters to a Vote of Security Holders

         No matters  were  submitted  to a vote of limited  partners  during the
fourth quarter of the fiscal year covered by this report.


                                      I-7




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.

                                     PART II


Item 5.  Market Price of and Distributions on the Registrant's Units and Related
         Limited Partner Matters

Market Information

         Units in the  Partnership  were  initially  sold at a price of $100 per
Unit.  Units are not traded on any exchange and there is no  established  public
trading  market for the Units.  Swift is aware of negotiated  transfers of Units
between  unrelated  parties;  however,  these  transfers  have been  limited and
sporadic.  Due to the  nature of these  transactions,  Swift  has no  verifiable
information regarding prices at which Units have been transferred.

Holders

         As of December 31, 1996,  there were 277 Limited Partners holding Units
in the Partnership.

Distributions

         The Partnership  generally makes distributions to Limited Partners on a
quarterly  basis,   subject  to  the  restrictions  set  forth  in  the  Limited
Partnership Agreement. In the fiscal years ended December 31, 1995 and 1996, the
Partnership  distributed a total of $38,900 and $115,000,  respectively,  to the
holders of its Units.  Cash  distributions  constitute net proceeds from sale of
oil and gas  production  after  payment of lease  operating  expenses  and other
partnership expenses.  Some or all of such amounts or any proceeds from the sale
of partnership  properties  could be deemed to constitute a return of investors'
capital.

         Oil and gas  investments  involve a high risk of loss, and no assurance
can be given that any particular  level of distributions to holders of Units can
be  achieved  or  maintained.   Although  it  is   anticipated   that  quarterly
distributions  will continue to be made through 1997, the Partnership's  ability
to make distributions  could be diminished by any event adversely  affecting the
oil and gas properties in which the Partnership  owns interests or the amount of
revenues received by the Partnership therefrom.

         The  Partnership's   Limited  Partnership  Agreement  contains  various
provisions  which might serve to delay,  defer or prevent a change in control of
the Partnership,  such as the requirement of a vote of Limited Partners in order
to  sell  all  or  substantially  all  of the  Partnership's  properties  or the
requirement of consent by the Managing  General  Partner to transfers of limited
partnership  interests  and  provisions  prohibiting  the  transfer  of  Limited
Partnership  Units  in any  fiscal  year in  excess  of a limit  which  has been
established in order to comply with certain federal income tax regulations.


                                      II-1




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


Item 6. Selected Financial Data

         The following  selected  financial  data,  prepared in accordance  with
generally  accepted  accounting  principles as of December 31, 1996, 1995, 1994,
1993 and  1992,  should be read in  conjunction  with the  financial  statements
included in Item 8:



                                1996               1995                1994             1993              1992
                           -------------      -------------      --------------    -------------     -------------
                                                                                                
Revenues                   $     209,232      $     142,905      $      248,998    $     313,987     $     442,456
Income (Loss)              $      39,362      $    (210,627)     $     (582,199)   $      41,813     $     113,022
Total Assets               $     577,292      $     910,447      $    1,190,308    $   1,976,181     $   2,207,136
Cash Distributions         $     132,132      $      50,154      $      123,640    $     410,760     $     474,736



Item 7. Management's Discussion and Analysis of Financial Condition
        and Results of Operations

Liquidity and Capital Resources

         The  Partnership  has expended  all of the  partners'  net  commitments
available for property  acquisitions  and development by acquiring  nonoperating
interests in 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.  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  nonoperating  interests in
oil and gas produced from oil and gas  properties.  This source of liquidity and
the related  results of operations will decline in future periods as the oil and
gas produced from these properties also declines.

Results of Operations

         Income from  nonoperating  interests  increased 46 percent in 1996 over
1995. Oil and gas sales increased 8 percent in 1996 vs. 1995.  Increases in both
1996 gas and oil prices were major contributors to the increased  revenues.  The
Partnership  experienced an increase in gas prices of 40 percent or $.59/MCF and
an  increase  in oil  prices of 21  percent  or  $3.19/BBL.  Production  volumes
decreased 15 percent due to a 43 percent oil production decrease and a 7 percent
gas production  decline.  The production declines partially offset the effect of
increased oil and gas prices impacting partnership performance.

         Associated  amortization  expense  increased a slight 2 percent in 1996
when compared to 1995.

         Income from  nonoperating  interests  decreased 43 percent in 1995 over
1994.  Oil and gas sales  decreased  31  percent  in 1995 vs.  1994.  Production
volumes decreased 22 percent due to a 25 percent gas production decrease and a 9
percent oil production decline.  Since the Partnership's reserves are 86 percent
gas, the decrease in gas production,  due to accelerated  production declines on
mature  wells,  a reduction  in  development  drilling  in the current  year and
production  curtailments  due  to  declining  prices,  had  a  major  impact  on
partnership  performance.  A decline  in the 1995 gas  prices of 24  percent  or
$.46/MCF further contributed to the Partnership's decreased revenues.

         Associated  amortization  expense  decreased  40  percent  in 1995 when
compared to 1994.

         The  Partnership  recorded an additional  provision in  amortization in
1995 and 1994 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, was below the fair market value paid for oil
and gas properties resulting in a full cost ceiling impairment.

         During 1997, the Partnership  revenues and costs will be shared between
the limited and general partners in a 90:10 ratio,  based on the annualized rate
of cash  distributions  by the  Partnership  during a  certain  period  prior to
December 31, 1996.  Based on current oil and gas prices,  current  levels of oil
and gas  production  and expected cash  distributions  during 1997, the Managing
General Partner  anticipates that the Partnership sharing ratio will continue to
be 90:10.


                                      II-2




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


Item 8. Financial Statements and Supplementary Data

         See Part IV, Item 14(a) for index to financial statements.

Item 9. Disagreements on Accounting and Financial Disclosure

         None.


                                      II-3




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.

                                    PART III


Item 10.  Directors and Executive Officers of the Registrant

         As a limited partnership,  the Registrant has no directors or executive
officers.  The  business and affairs of the  Registrant  are managed by Swift as
Managing General Partner. Set forth below is certain information as of March 17,
1997 regarding the directors and executive officers of Swift.



                                            Position(s) with
         Name             Age           Swift and Other Companies
         ----             ---           -------------------------
                             
                                   DIRECTORS

A. Earl Swift             63       President, Chief Executive Officer and
                                   Chairman of the Board

Virgil N. Swift           68       Executive Vice President - Business
                                   Development, Vice Chairman of the Board

G. Robert Evans           65       Director of Swift; Chairman of the Board,
                                   Material Sciences Corporation;
                                   Director, Consolidated Freightways, Inc.,
                                   Fibreboard  Corporation,   Elco  Industries,
                                   and Old Second Bancorp

Raymond O. Loen           72       Director of Swift; President, R. O. Loen
                                   Company

Henry C. Montgomery       61       Director of Swift; Chairman of the Board,
                                   Montgomery Financial Services Corporation;
                                   Director, Southwall Technology Corporation

Clyde W. Smith, Jr.       48       Director of Swift; President, Somerset
                                   Properties, Inc.

Harold J. Withrow         69       Director of Swift

                                   EXECUTIVE OFFICERS

Terry E. Swift            41       Executive Vice President, Chief
                                   Operating Officer

John R. Alden             51       Senior Vice President - Finance,
                                   Chief Financial Officer and Secretary

Bruce H. Vincent          49       Senior Vice President - Funds Management

James M. Kitterman        52       Senior Vice President - Operations

Alton D. Heckaman, Jr.    39       Vice President - Finance and Controller



                                     III-1




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


         From time to time, Swift as Managing General Partner of the Partnership
purchases Units in the  Partnership  from investors who offer the Units pursuant
to their right of  presentment,  which  purchases are made pursuant to terms set
out in the  Partnership's  original Limited  Partnership  Agreement.  Due to the
frequency  and  large  number  of  these   transactions,   Swift  reports  these
transactions  under  Section  16 of the  Securities  Exchange  Act of 1934 on an
annual  rather than a monthly  basis.  In some cases such annual  reporting  may
constitute a late filing of the required Section 16 reports under the applicable
Section 16 rules.

Item 11.  Executive Compensation

         As  noted  in  Item  10,  "Directors  and  Executive  Officers  of  the
Registrant,"  above,  the Partnership has no executive  officers.  The executive
officers of Swift and VJM are not compensated by the Partnership.

         Certain fees and  allowances  contemplated  by the Limited  Partnership
Agreement  have been paid by the  Partnership  to Swift and VJM. See Note (4) in
Notes  To  Financial   Statements   (Related-Party   Transactions)  for  further
discussion.

Item 12.  Security Ownership of Certain Beneficial Owners and Management

         No  single  limited  partner  is  known  to the  Partnership  to be the
beneficial owner of more than five percent of the Partnership's Units.

         Swift and VJM are not aware of any arrangement,  the operation of which
may at a subsequent date result in a change in control of the Partnership.

Item 13.  Certain Relationships and Related Transactions

         As  noted  in  Item  10,  "Directors  and  Executive  Officers  of  the
Registrant," above, the Partnership has no executive officers or directors,  and
thus has not  engaged  in any  transactions  in which  any  such  person  had an
interest.  The Partnership is permitted to engage in certain  transactions  with
Swift as Managing General Partner and VJM as Special General Partner, subject to
extensive  guidelines  and  restrictions  are  described  in the  "Conflicts  of
Interest"  section  of the  Amended  Prospectus  contained  in the  Registration
Statement, which is incorporated herein by reference.

         Summarized  below are the  principal  transactions  that have  occurred
between the Partnership,  on one hand, and Swift, VJM and their  affiliates,  on
the other.

Certain Transactions with General Partners

         1.  As  described  in  Item  1,  "Business,"  above,  during  1990  the
Partnership  entered into an NP/OR  Agreement  with the  Operating  Partnership,
which is also managed by Swift and VJM.  Pursuant to such NP/Or  Agreement,  the
Operating Partnership acquired the oil and gas properties described under Item 2
above and conveyed nonoperating interests therein to the Partnership.

         2.  Swift  acts  as  operator  for  many  of the  wells  in  which  the
Partnership has  nonoperating  interests and has received  compensation for such
activities in accordance with standard industry operating agreements.

         3.  The Partnership  paid to Swift and VJM certain fees as contemplated
by the  Limited  Partnership  Agreement.  See Note  (4) in  Notes  To  Financial
Statements (Related-Party Transactions) for further discussion.


                                     III-2




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.

                                     PART IV



Item 14. Exhibits, Financial Statement Schedules and Reports on Form 8-K

      a(1)     FINANCIAL STATEMENTS                                  PAGE NO.
                                                                     --------
                                                                    
               Report of Independent Public Accountants                IV-3

               Balance Sheets as of December 31, 1996 and 1995         IV-4

               Statements of Operations for the years ended
                  December 31, 1996, 1995 and 1994                     IV-5

               Statements of Partners' Capital for the years ended
                  December 31, 1996, 1995 and 1994                     IV-6

               Statements of Cash Flows for the years ended
                  December 31, 1996, 1995 and 1994                     IV-7

               Notes to Financial Statements                           IV-8


       a(2)    FINANCIAL STATEMENT SCHEDULES

               All schedules required by the SEC are either  inapplicable or the
               required information is included in the Financial Statements, the
               Notes thereto, or in other information included elsewhere in this
               report.

       a(3)    EXHIBITS

               3.1    Limited  Partnership  Agreement  of Swift  Energy  Managed
                      Pension Assets  Partnership  1990-D,  Ltd., dated December
                      27,  1990.  (Form 10-K for year ended  December  31, 1990,
                      Exhibit 3.1).

               3.2    Certificate of Limited Partnership of Swift Energy Managed
                      Pension Assets Partnership 1990-D, Ltd., as filed December
                      28, 1990,  with the Texas  Secretary of State.  (Form 10-K
                      for year ended December 31, 1990, Exhibit 3.2).

               10.1   Net  Profits and  Overriding  Royalty  Interest  Agreement
                      between Swift Energy Managed  Pension  Assets  Partnership
                      1990-D Ltd. and Swift Energy Income  Partners  1990-D Ltd.
                      dated  December  31,  1990.  (Form  10-K  for  year  ended
                      December 31, 1990, Exhibit 10.1).

               99.1   A copy of the following section of the Amended  Prospectus
                      dated  November  13,  1987,  contained  in  Post-Effective
                      Amendment No. 1 to Registration  Statement No. 33-15998 on
                      Form S-1 for Swift Energy  Managed  Pension Assets Fund I,
                      as filed on November 3, 1988, which have been incorporated
                      herein by reference:  "Proposed  Activities"  (pp 38 - 48)
                      and  "Conflicts of Interest" (pp. 70 - 79). (Form 10-K for
                      year ended December 31, 1990, Exhibit 28.1).

  b(1) REPORTS ON FORM 8-K

          No  reports  on Form 8-K have been  filed  during  the  quarter  ended
December 31, 1996.


                                      IV-1




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.


Supplemental  Information to be Furnished with Reports Filed Pursuant to Section
15(d) of the Act by Registrants Which Have Not Registered Securities Pursuant to
Section 12 of the Act.

         No annual report to security  holders covering the  Partnership's  1996
fiscal  year,  or proxy  statement,  form of proxy  or  other  proxy  soliciting
material has been sent to Limited Partners of the Partnership.


                                      IV-2




                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To Swift Energy Managed Pension Assets Partnership 1990-D, Ltd.:

         We have audited the accompanying balance sheets of Swift Energy Managed
Pension Assets  Partnership  1990-D,  Ltd., (a Texas limited  partnership) as of
December 31, 1996 and 1995, and the related statements of operations,  partners'
capital and cash flows for the years ended  December  31,  1996,  1995 and 1994.
These  financial  statements  are the  responsibility  of the general  partner's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

         We conducted our audits in accordance with generally  accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

         In our opinion,  the  financial  statements  referred to above  present
fairly, in all material respects, the financial position of Swift Energy Managed
Pension Assets Partnership  1990-D,  Ltd., as of December 31, 1996 and 1995, and
the results of its  operations  and its cash flows for the years ended  December
31,  1996,  1995 and  1994 in  conformity  with  generally  accepted  accounting
principles.






                                             ARTHUR ANDERSEN LLP




Houston, Texas
February 10, 1997


                                      IV-3




           SWIFT ENERGY MANAGED PENSIO ASSETS PARTNERSHIP 1990-D, LTD.
                                 BALANCE SHEETS
                           DECEMBER 31, 1996 AND 1995




                                                                                             1996                 1995
                                                                                       --------------       --------------
                                                                                                      
         ASSETS:

         Current Assets:
              Cash and cash equivalents                                                $       45,934       $        1,414
              Nonoperating interests income receivable                                         34,550               65,975
                                                                                       --------------       --------------
                   Total Current Assets                                                        80,484               67,389
                                                                                       --------------       --------------
         Nonoperating interests in oil and gas
              properties, using full cost accounting                                        2,640,190            2,868,878
         Less-Accumulated amortization                                                     (2,143,382)          (2,025,820)
                                                                                       --------------       --------------
                                                                                              496,808              843,058
                                                                                       --------------       --------------
                                                                                       $      577,292       $      910,447
                                                                                       ==============       ==============


         LIABILITIES AND PARTNERS' CAPITAL:

         Current Liabilities:
              Payable related to excess costs                                          $        8,917       $      249,302
                                                                                       --------------       --------------

         Partners' Capital                                                                    568,375              661,145
                                                                                       --------------       --------------
                                                                                       $      577,292       $      910,447
                                                                                       ==============       ==============



                 See accompanying notes to financial statements.

                                      IV-4




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                            STATEMENTS OF OPERATIONS
              FOR THE YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994




                                                                      1996            1995               1994
                                                                ---------------  ---------------   ---------------
                                                                                          
REVENUES:
   Income from nonoperating interests                           $       208,834  $       142,828   $       248,949
   Interest income                                                          398               77                49
                                                                ---------------  ---------------   ---------------
                                                                        209,232          142,905           248,998
                                                                ---------------  ---------------   ---------------

COSTS AND EXPENSES:
   Amortization                                                         117,562          316,003           780,316
   General and administrative                                            52,308           37,529            50,881
                                                                ---------------  ---------------   ---------------
                                                                        169,870          353,532           831,197
                                                                ---------------  ---------------   ---------------
INCOME (LOSS)                                                   $        39,362  $      (210,627)  $      (582,199)
                                                                ===============  ===============   ===============



                 See accompanying notes to financial statements.

                                      IV-5




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                         STATEMENTS OF PARTNERS' CAPITAL
              FOR THE YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994




                                                  Limited           General         Combining
                                                  Partners          Partners        Adjustment            Total
                                              ---------------   ---------------  ---------------     --------------
                                                                                         
Balance,
    December 31, 1993                         $     1,416,841   $        35,769  $       175,155     $    1,627,765

Income (Loss)                                        (508,823)           15,946          (89,322)          (582,199)

Cash Distributions                                   (107,000)          (16,640)              --           (123,640)
                                              ---------------   ---------------  ---------------     --------------
Balance,
    December 31, 1994                                 801,018            35,075           85,833            921,926
                                              ---------------   ---------------  ---------------     ---------------

Income (Loss)                                        (189,498)            8,253          (29,382)          (210,627)

Cash Distributions                                    (38,900)          (11,254)              --            (50,154)
                                              ---------------   ---------------  ---------------     --------------
Balance,
    December 31, 1995                                 572,620            32,074           56,451            661,145
                                              ---------------   ---------------  ---------------     --------------

Income (Loss)                                          38,572             9,960           (9,170)            39,362

Cash Distributions                                   (115,000)          (17,132)              --           (132,132)
                                              ---------------   ---------------  ---------------     --------------
Balance,
    December 31, 1996                         $       496,192   $        24,902  $        47,281     $      568,375
                                              ===============   ===============  ===============     ==============



Limited Partners' net income (loss)
    per unit

      1994                                    $        (17.36)
                                              ===============
      1995                                    $         (6.47)
                                              ===============
      1996                                    $          1.32
                                              ===============



                 See accompanying notes to financial statements.

                                      IV-6




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                            STATEMENTS OF CASH FLOWS
              FOR THE YEARS ENDED DECEMBER 31, 1996, 1995 AND 1994




                                                                                        1996             1995              1994
                                                                                 ---------------   ---------------  ---------------
                                                                                                           
CASH FLOWS FROM OPERATING ACTIVITIES:
    Income (Loss)                                                                $        39,362   $      (210,627) $      (582,199)
    Adjustments to reconcile income (loss) to
      net cash provided by operations:
      Amortization                                                                       117,562           316,003          780,316
      Change in assets and liabilities:
        (Increase) decrease in nonoperating interests income receivable                   31,425           (11,587)           9,110
        (Increase) decrease in other current assets                                           --                --           25,448
        Increase (decrease) in accounts payable
          and accrued liabilities                                                             --            (4,240)          (1,038)
                                                                                 ---------------   ---------------  ---------------
                  Net cash provided by (used in) operating activities                    188,349            89,549          231,637
                                                                                 ---------------   ---------------  ---------------
CASH FLOWS FROM INVESTING ACTIVITIES:
    Additions to nonoperating interests in oil
      and gas properties                                                                 (43,020)          (24,897)         (34,417)
    Proceeds from sales on nonoperating interests
      in oil and gas properties                                                          271,708               419            5,465
    Increase (decrease) in payable related to excess costs                              (240,385)          (14,840)         (78,996)
                                                                                 ---------------   ---------------  ---------------
                  Net cash provided by (used in) investing activities                    (11,697)          (39,318)        (107,948)
                                                                                 ---------------   ---------------  ---------------
CASH FLOWS FROM FINANCING ACTIVITIES:
    Cash distributions to partners                                                      (132,132)          (50,154)        (123,640)
                                                                                 ---------------   ---------------  ---------------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                      44,520                77               49
                                                                                 ---------------   ---------------  ---------------
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                                           1,414             1,337            1,288
                                                                                 ---------------   ---------------  ---------------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                                       $        45,934   $         1,414  $         1,337
                                                                                 ===============   ===============  ===============



                 See accompanying notes to financial statements.

                                      IV-7




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                          NOTES TO FINANCIAL STATEMENTS


(1) Organization and Terms of Partnership Agreement -

         Swift Energy Managed Pension Assets Partnership  1990-D,  Ltd., a Texas
limited partnership (the Partnership),  was formed on December 31, 1990, for the
purpose of purchasing net profits  interests,  overriding  royalty interests and
royalty interests (collectively,  "nonoperating interests") in producing oil and
gas  properties  within the  continental  United  States.  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 general partners are required to contribute
up to 1/99th of limited partner net contributions. The 277 limited partners made
total capital contributions of $2,930,379.

         Nonoperating  interests  acquisition  costs and the  management fee are
borne  99  percent  by the  limited  partners  and one  percent  by the  general
partners.  Organization  and syndication  costs were borne solely by the limited
partners.

         Initially,  all continuing costs (including  general and administrative
reimbursements and direct expenses) and revenues are allocated 90 percent to the
limited  partners  and  ten  percent  to  the  general  partners.  If  prior  to
partnership  payout,  as  defined,  however,  the cash  distribution  rate for a
certain period equals or exceeds 17.5 percent,  then for the following  calendar
year,  these  continuing  costs and revenues will be allocated 85 percent to the
limited  partners  and 15 percent to the  general  partners.  After  partnership
payout,  continuing  costs and revenues will be shared 85 percent by the limited
partners, and 15 percent by the general partners,  even if the cash distribution
rate is less than 17.5 percent. Payout had not occurred as of December 31, 1996.

(2) 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.

Nonoperating Interests in Oil and Gas Properties --

         For  financial   reporting   purposes,   the  Partnership  follows  the
"full-cost"  method of  accounting  for  nonoperating  interests  in oil and gas
properties.  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 nonoperating
interests in oil and gas  properties on the  units-of-production  method.  Under
this method,  the provision is calculated by multiplying  the total  unamortized
cost of  nonoperating  interests  in 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  attributable
to the Partnership's nonoperating interests at the beginning of the period.

         The  calculation  of the "ceiling  limitation"  and the  provision  for
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.


                                      IV-8




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)


Statements of Cash Flows --

         Highly liquid debt instruments with an initial maturity of three months
or less are considered to be cash equivalents.

(3) Acquisition of Nonoperating Interests in Oil and Gas Property Costs -

         Effective December 31, 1990, the Partnership entered into a Net Profits
and Overriding  Royalty Interests  Agreement (NP/OR Agreement) with Swift Energy
Income Partners 1990-D, Ltd. (Operating Partnership),  managed by Swift, for the
purpose of acquiring  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 its proportionate share of
the property  acquisition  costs,  as defined.  Property  acquisition  costs are
amounts actually paid by the Operating Partnership for the properties plus costs
incurred by the  Operating  Partnership  in acquiring the  properties  and costs
related to screening and  evaluation of properties not acquired.  In 1996,  1995
and 1994, the Partnership acquired  nonoperating  interests in producing oil and
gas properties for $43,020, $24,897 and $34,417, respectively.

         During  1995  and  1994,  the  Partnership's  unamortized  oil  and gas
property costs exceeded the quarterly  calculations of the "ceiling  limitation"
resulting in an additional  provision for amortization of $200,898 and $588,696,
respectively.  In  computing  the  Partnership's  third  quarter  1994  "ceiling
limitation",  the Partnership  utilized the product prices in effect at the date
the  Partnership's  report was issued.  Utilizing these subsequent  prices,  the
write down  recorded by the  Partnership  was $310,454 less than the amount that
would have been recorded  using product  prices in effect at September 30, 1994.
No such write downs were required in 1996.

         In addition,  the limited  partners'  share of unamortized  oil and gas
property costs exceeded their "ceiling  limitation" in 1995 and 1994,  resulting
in a valuation allowance of $177,864 and $512,494,  respectively. This amount is
included in the income (loss)  attributable to the limited partners shown in the
statement of partners'  capital  together with a "combining  adjustment" for the
difference   between  the  limited   partners'   valuation   allowance  and  the
Partnership's valuation allowance.  The "combining adjustment" changes quarterly
as the  Partnership's  total  amortization  provision  is more or less  than the
combined amortization provision attributable to general and limited partners.

(4) Related-Party Transactions -

         An  affiliate  of the  Special  General  Partner,  as  Dealer  Manager,
received $73,259 for managing and overseeing the offering of limited partnership
units.

         A  one-time  management  fee of  $73,259  was paid to Swift in 1990 for
services  performed  for the  Partnership.  During  1996,  1995  and  1994,  the
Partnership paid Swift $39,916, $25,429 and $37,265,  respectively, as a general
and administrative overhead allowance.

(5) Federal Income Taxes -

         The Partnership is not a tax-paying entity. No provision is made in the
accounts of the Partnership for federal or state income taxes,  since such taxes
are liabilities of the individual partners,  and the amounts thereof depend upon
their respective tax situations.

         The tax returns and the amount of distributable  Partnership income are
subject to  examination  by the federal  and state  taxing  authorities.  If the
Partnership's  royalty  income for federal  income tax  purposes  is  ultimately
changed by the taxing  authorities,  the tax  liability of the limited  partners
could be changed  accordingly.  Royalty  income  reported  on the  Partnership's
federal  return of income for the years ended  December 31, 1996,  1995 and 1994
was $249,406, $97,102 and $165,590, respectively. The difference between royalty
income for federal income tax purposes reported by the Partnership and income or
loss from  nonoperating  interests  reported herein  primarily  results from the
exclusion of amortization  (as described below) from ordinary income reported in
the Partnership's federal return of income.


                                      IV-9




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)


         For  federal  income  tax  purposes,   amortization   with  respect  to
nonoperating  interests in oil and gas properties is computed  separately by the
partners  and not by the  Partnership.  Since  the  amount  of  amortization  on
nonoperating  interests in oil and gas is not computed at the Partnership level,
amortization is not included in the Partnership's  income for federal income tax
purposes but is charged directly to the partners' capital accounts to the extent
of the cost of the nonoperating interests in oil and gas properties, and thus is
treated as a separate  item on the  partners'  Schedule  K-1.  Amortization  for
federal income tax purposes may vary from that computed for financial  reporting
purposes in cases where a ceiling adjustment is recorded,  as such amount is not
recognized for tax purposes.

(6) 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.

         The Partnership  extends credit 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.

(7) 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.


                                      IV-10




           SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD

                                   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 MANAGED PENSION
                                              ASSETS PARTNERSHIP 1990-D, LTD.
                                              (Registrant)

                                     By:      SWIFT ENERGY COMPANY
                                              General Partner

Date:      March 17, 1997            By:      s/b A. Earl Swift
           --------------                     ----------------------------------
                                              A. Earl Swift
                                              President

Date:      March 17, 1997            By:      s/b John R. Alden
           --------------                     ----------------------------------
                                              John R. Alden
                                              Principal Financial Officer

Date:      March 17, 1997            By:      s/b Alton D. Heckaman, Jr.
           --------------                     ----------------------------------
                                              Alton D. Heckaman, Jr.
                                              Principal Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following  persons on behalf of the  Registrant and
in the capacities and on the dates indicated.

                                              SWIFT ENERGY MANAGED PENSION
                                              ASSETS PARTNERSHIP 1990-D, LTD.
                                              (Registrant)

                                     By:      SWIFT ENERGY COMPANY
                                              General Partner

Date:     March 17, 1997             By:      s/b A. Earl Swift
          --------------                      ----------------------------------
                                              A. Earl Swift
                                              Director and Principal
                                              Executive Officer

Date:     March 17, 1997             By:      s/b Virgil N. Swift
          --------------                      ----------------------------------
                                              Virgil N. Swift
                                              Director and Executive
                                              Vice President - Business
                                              Development


                                     IV-11




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-C, LTD.



Date:      March 17, 1997            By:      s/b G. Robert Evans
           --------------                     ----------------------------------
                                              G. Robert Evans
                                              Director

Date:      March 17, 1997            By:      s/b Raymond O. Loen
           --------------                     ----------------------------------
                                              Raymond O. Loen
                                              Director

Date:      March 17, 1997            By:      s/b Henry C. Montgomery
           --------------                     ----------------------------------
                                              Henry C. Montgomery
                                              Director

Date:      March 17, 1997            By:      s/b Clyde W. Smith, Jr.
           --------------                     ----------------------------------
                                              Clyde W. Smith, Jr.
                                              Director

Date:      March 17, 1997            By:      s/b Harold J. Withrow
           --------------                     ----------------------------------
                                              Harold J. Withrow
                                              Director


                                     IV-12




                                    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, 1997

                                       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 33-15998-11


          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
             (Exact name of registrant as specified in its charter)


                                           
                  Texas                                   76-0320253
(State or other jurisdiction of organization) (I.R.S. Employer Identification No.)



                        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
   ----       ----





          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.

                                      INDEX





PART I.    FINANCIAL INFORMATION                                        PAGE
                                                                       
      ITEM 1.    Financial Statements

            Balance Sheets

                - March 31, 1997 and December 31, 1996                    3

            Statements of Operations

                - Three month periods ended March 31, 1997 and 1996       4

            Statements of Cash Flows

                - Three month periods ended March 31, 1997 and 1996       5

            Notes to Financial Statements                                 6

      ITEM 2.    Management's Discussion and Analysis of Financial
                     Condition and Results of Operations                  8

PART II.    OTHER INFORMATION                                             9


SIGNATURES                                                               10





          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                                 BALANCE SHEETS






                                                                                          March 31,           December 31,
                                                                                            1997                  1996
                                                                                       --------------       --------------
                                                                                         (Unaudited)
                                                                                                      
         ASSETS:

         Current Assets:
              Cash and cash equivalents                                                $       41,704       $       45,934
              Nonoperating interests income receivable                                         55,671               34,550
                                                                                       --------------       --------------
                   Total Current Assets                                                        97,375               80,484
                                                                                       --------------       --------------
         Nonoperating interests in oil and gas
              properties, using full cost accounting                                        2,639,416            2,640,190
         Less-Accumulated amortization                                                     (2,162,542)          (2,143,382)
                                                                                       --------------       --------------
                                                                                              476,874              496,808
                                                                                       --------------       --------------
                                                                                       $      574,249       $      577,292
                                                                                       ==============       ==============


         LIABILITIES AND PARTNERS' CAPITAL:

         Current Liabilities:
              Payable related to excess costs                                          $        3,342       $        8,917
                                                                                       --------------       --------------

         Partners' Capital                                                                    570,907              568,375
                                                                                       --------------       --------------
                                                                                       $      574,249       $      577,292
                                                                                       ==============       ==============



                 See accompanying notes to financial statements.

                                        3




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                            STATEMENTS OF OPERATIONS
                                   (Unaudited)





                                                                                          Three Months Ended
                                                                                             March 31,
                                                                                 ---------------------------------
                                                                                       1997              1996
                                                                                 ---------------   ---------------
                                                                                             
         REVENUES:
             Income from nonoperating interests                                  $        52,046   $        34,538
             Interest income                                                                 383                 7
                                                                                 ---------------   ---------------
                                                                                          52,429            34,545
                                                                                 ---------------   ---------------
         COSTS AND EXPENSES:
             Amortization                                                                 19,160            25,779
             General and administrative                                                   10,026             8,742
                                                                                 ---------------   ---------------
                                                                                          29,186            34,521
                                                                                 ---------------   ---------------
         NET INCOME (LOSS)                                                       $        23,243   $            24
                                                                                 ===============   ===============



         Limited Partners' net income (loss)
             per unit

         March 31, 1997                       $           .79
                                              ===============
         March 31, 1996                       $            --
                                              ===============


                 See accompanying note to financial statements.

                                        4




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                            STATEMENTS OF CASH FLOWS
                                   (Unaudited)




                                                                                           Three Months Ended
                                                                                                March 31,
                                                                                ---------------------------------------
                                                                                       1997                   1996
                                                                                ----------------        ---------------
                                                                                                  
CASH FLOWS FROM OPERATING ACTIVITIES:
    Income (loss)                                                               $         23,243        $            24
    Adjustments to reconcile income (loss) to
      net cash provided by operations:
      Amortization                                                                        19,160                 25,779
      Change in assets and liabilities:
        (Increase) decrease in nonoperating interests income receivable                  (21,121)                 9,048
                                                                                ----------------        ---------------
                 Net cash provided by (used in) operating activities                      21,282                 34,851
                                                                                ----------------        ---------------
CASH FLOWS FROM INVESTING ACTIVITIES:
        Additions to nonoperating interests
           in oil and gas properties                                                          --                 (3,729)
        Proceeds from sale of nonoperating interests
           in oil and gas properties                                                         774                     --
        Increased (decrease) in payable related to excess costs                           (5,575)               (27,640)
                                                                                ----------------        ---------------
                 Net cash provided by (used in) investing activities                      (4,801)               (31,369)
                                                                                ----------------        ---------------
CASH FLOWS FROM FINANCING ACTIVITIES:
      Cash distributions to partners                                                     (20,711)                (3,476)
                                                                                ----------------        ---------------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                      (4,230)                     6
                                                                                ----------------        ---------------
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                                          45,934                  1,414
                                                                                ----------------        ---------------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                                      $         41,704        $         1,420
                                                                                ================        ===============
Supplemental disclosure of cash flow information:
    Cash paid during the period for interest                                    $             --        $         3,772
                                                                                ================        ===============



                 See accompanying notes to financial statements.

                                        5




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                          NOTES TO FINANCIAL STATEMENTS
                                   (UNAUDITED)

(1)  General Information -

                  The financial statements included herein have been prepared by
        the  Partnership  and are  unaudited  except  for the  balance  sheet at
        December  31,  1996  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 Managed Pension Assets Partnership 1990-D,  Ltd.,
        a Texas limited partnership ("the Partnership"),  was formed on December
        31,  1990,  for  the  purpose  of  purchasing  net  profits   interests,
        overriding  royalty  interests  and  royalty  interests   (collectively,
        "nonoperating interests") in producing oil and gas properties within the
        continental  United  States.  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  general  partners  are  required  to
        contribute up to 1/99th of limited  partner net  contributions.  The 277
        limited partners made total capital contributions of $2,930,379.

                  Nonoperating  interests  acquisition  costs and the management
        fee are borne 99 percent by the limited  partners and one percent by the
        general  partners.  Organization and syndication costs were borne solely
        by the limited partners.

                  Generally,  all continuing costs (including development costs,
        operating costs,  general and  administrative  reimbursements and direct
        expenses) and revenues are allocated 90 percent to the limited  partners
        and ten percent to the general partners. If prior to partnership payout,
        however,  the cash  distribution  rate for a  certain  period  equals or
        exceeds  17.5  percent,  then for the  following  calendar  year,  these
        continuing  costs and  revenues  will be  allocated  85  percent  to the
        limited  partners  and  15  percent  to  the  general  partners.   After
        partnership  payout,  continuing  costs and  revenues  will be shared 85
        percent by the limited partners, and 15 percent by the general partners,
        even if the cash distribution rate is less than 17.5 percent.

(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. Certain reclassifications have been
        made to prior year amounts to conform to the current year presentation.


                                       6




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                   (UNAUDITED)


     Nonoperating Interests in Oil and Gas Properties --

                  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 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 -

                  An  affiliate  of  the  Special  General  Partner,  as  Dealer
        Manager,  received  $73,259 for managing and  overseeing the offering of
        the limited  partnership units. A one-time management fee of $73,259 was
        paid to Swift for services performed for the Partnership.

                  The  Partnership  entered  into a Net Profits  and  Overriding
        Royalty Interests Agreement ("NP/OR Agreement") with Swift Energy Income
        Partners 1990-D, Ltd. ("Operating  Partnership"),  managed by Swift, for
        the purpose of acquiring nonoperating interests in producing oil and gas
        properties. Under 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 its proportionate share of the property acquisition costs.

(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.

                  The Partnership extends credit 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.


                                       7




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                       CONDITION AND RESULTS OF OPERATIONS


GENERAL

      The  Partnership  is formed for the purpose of investing  in  nonoperating
interests in producing oil and gas  properties  located  within the  continental
United States.  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  is formed,  it commences  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
partner  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 partners 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.

LIQUIDITY AND CAPITAL RESOURCES

      The  Partnership has completed  acquisition of  nonoperating  interests in
producing oil and gas  properties,  expending  all of the limited  partners' net
commitments available for property acquisitions.

      Under the NP/OR Agreement, the Managing General Partner acquires interests
in oil and gas properties  from outside  parties and sells these interests to an
affiliated  operating  partnership,  who  in  turn  creates  and  sells  to  the
Partnership  nonoperating  interests in these same oil and gas  properties.  The
Managing  General Partner expects funds available from net profits  interests to
be distributed to the partners.

RESULTS OF OPERATIONS

      Income  from  nonoperating  interests  increased  51  percent in the first
quarter of 1997 when  compared  to the same  quarter in 1996.  Oil and gas sales
remained stable in the first quarter of 1997 when compared to the same period in
1996,  Oil  production  decreased  66 percent  and gas  production  declined  14
percent.  The decrease in  production  had a significant  impact on  partnership
performance.  Production declines were offset by an increase in gas prices of 56
percent or $1.05/MCF and in oil prices of 23 percent or $3.85/BBL  when compared
to first quarter 1996 prices.

      Associated amortization expense decreased 26 percent or $6,619.

      During 1997,  partnership  revenues  and costs will be shared  between the
limited partners and general partners in a 90:10 ratio.


                                       8




          SWIFT ENERGY MANAGED PENSION ASSETS PARTNERSHIP 1990-D, LTD.
                           PART II - OTHER INFORMATION




ITEM 5.    OTHER INFORMATION


                                     -NONE-





                                       9





                                   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 MANAGED PENSION
                                               ASSETS PARTNERSHIP 1990-D, LTD.
                                               (Registrant)

                                    By:        SWIFT ENERGY COMPANY
                                               Managing General Partner


Date:     May 5, 1997               By:        /s/ John R. Alden
          -----------                          --------------------------------
                                               John R. Alden
                                               Senior Vice President, Secretary
                                               and Principal Financial Officer

Date:     May 5, 1997               By:        /s/ Alton D. Heckaman, Jr.
          -----------                          --------------------------------
                                               Alton D. Heckaman, Jr.
                                               Vice President, Controller
                                               and Principal Accounting Officer


                                       10



                                  May 20, 1997




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


                                 Swift Energy Managed Pension Assets 1990-D Ltd.
                                 97-003-131

Gentlemen:

At your request,  we have made an audit of the reserves and future net cash flow
as of December 31, 1996,  prepared by Swift Energy Company ("Swift") for certain
interests  owned by the limited  partners in Swift Energy Managed Pension Assets
1990-D Ltd. This audit has been conducted according to the standards  pertaining
to the  estimating and auditing of oil and gas reserve  information  approved by
the Board of  Directors  of the Society of  Petroleum  Engineers  on October 30,
1979. We have reviewed  these  properties  and where we disagreed with the Swift
reserve estimates, Swift revised its estimates to be in agreement. The estimated
net  reserves,  future  net cash flow and  discounted  future  net cash flow are
summarized by reserve category as follows:



                                            Estimated                                   Estimated
                                          Net Reserves                             Future Net Cash Flow
                                  --------------------------------            ---------------------------------
                                     Oil &                                                           Discounted
                                  Condensate                Gas                                        at 10%
                                   (Barrels)               (Mcf)              Nondiscounted           Per Year
                                  ----------              --------            -------------           ---------

                                                                                                
Proved Developed                     6,455                 499,550               $ 731,509            $ 504,435

Proved Undeveloped                   1,230                 102,318               $ 206,323            $  89,018
                                    ------                --------               ---------            ---------
Total Proved                         7,685                 601,868               $ 937,832            $ 593,453

G & A                                                                            $ (64,686)           $ (32,765)
                                    ------                --------               ---------            ---------

TOTAL                                7,685                 601,868               $ 873,146            $ 560,688












Swift Energy Company               - 2 -                            May 20, 1997

The  discounted  future net cash flow is not  represented  to be the fair market
value of these reserves and the estimated  reserves included in this report have
not been adjusted for risk.

The  estimated  future  net cash  flow  shown is that cash  flow  which  will be
realized  from  the  sale of the  estimated  net  reserves  after  deduction  of
royalties,  ad valorem and production taxes, direct operating costs and required
capital expenditures, when applicable. Surface and well equipment salvage values
and well plugging and field  abandonment  costs have not been  considered in the
cash flow  projections.  Future net cash flow as stated in this report is before
the deduction of federal income tax.

In the economic  projections,  prices,  operating  costs and  development  costs
remain constant for the projected life of each lease. For these projections, the
oil and gas  prices  were  assumed  to be $21.00  per barrel and $2.25 per MMBTU
respectively.

The  reserves  included  in this  study are  estimates  only and  should  not be
construed  as  exact  quantities.  Future  conditions  may  affect  recovery  of
estimated  reserves and cash flow, and all categories of reserves may be subject
to revision as more  performance data become  available.  The proved reserves in
this report conform to the applicable definitions  promulgated by the Society of
Petroleum  Engineers  and  the  Society  of  Petroleum   Evaluation   Engineers.
Attachment  I,  following  this  letter,  sets  forth  all  reserve  definitions
incorporated in this study.

Extent and character of ownership,  oil and gas prices,  production data, direct
operating costs, capital expenditure  estimates and other data provided by Swift
have been accepted as  represented.  The  production  data  available to us were
through the month of October, 1996, except in those instances in which data were
available  through December.  Interim  production to December 31, 1996, has been
estimated.  No  independent  well  tests,  property  inspections  or  audits  of
operating  expenses were conducted by our staff in conjunction  with this study.
We did not verify or determine  the extent,  character,  obligations,  status or
liabilities,  if any, arising from any current or possible future  environmental
liabilities that might be applicable.

In order to audit  the  reserves,  costs and  future  cash  flows  shown in this
report,  we have relied in part on  geological,  engineering  and economic  data
furnished by our client. Although we have made a best efforts attempt to acquire
all  pertinent  data and to analyze it carefully  with  methods  accepted by the
petroleum industry,  there is no guarantee that the volumes of oil or gas or the
cash flows projected will be realized.

Production  rates may be subject to regulation  and contract  provisions and may
fluctuate  according to market demand or other factors beyond the control of the
operator.  The reserve and cash flow  projections  presented  in this report may
require revision as additional data become available.










Swift Energy Company                - 3 -                           May 20, 1997


We are unrelated to Swift and we have no interest in the properties  included in
the information reviewed by us. In particular:

         1.     We do not own a financial interest in Swift or its oil and gas
                properties.

         2.     Our fee is not contingent on the outcome of our work or report.

         3.     We have not performed other services for or have any other
                relationship with Swift that would affect our independence.

If  investments  or  business  decisions  are to be made in  reliance  on  these
estimates by anyone other than our client,  such person with the approval of our
client is invited to visit our  offices at his  expense so that he can  evaluate
the assumptions  made and the  completeness  and extent of the data available on
which our estimates are based.

Any  distribution or publication of this report or any part thereof must include
this letter in its entirety.

                                                 Yours very truly,

                                                 H.J. GRUY AND ASSOCIATES, INC.

                                                 By: /s/ James H. Hartsock
                                                    ----------------------------
                                                   James H. Hartsock, PhD., P.E.
                                                   Executive Vice President

JHH:gdm

Attachment
C:\SWIFT\1990-D.131