Page 16 of 15
                                 FORM 10-Q
                                     
                                     
                    SECURITIES AND EXCHANGE COMMISSION
                          WASHINGTON, D.C.  20549

(Mark One)

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

For the quarterly period ended September 30, 1998

                                    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 33-47668-01

         SOUTHWEST ROYALTIES INSTITUTIONAL 1992-93 INCOME PROGRAM
         Southwest Royalties Institutional Income Fund XI-A, L.P.
                  (Exact name of registrant as specified
                   in its limited partnership agreement)

Delaware                                          75-2427297
(State or other jurisdiction of                        (I.R.S. Employer
incorporation or organization)                         Identification No.)

                       407 N. Big Spring, Suite 300
                  _________Midland, Texas 79701_________
                 (Address of principal executive offices)
                                     
                      ________(915) 686-9927________
                      (Registrant's telephone number,
                           including area code)

Indicate  by  check  mark  whether 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 _____
                                     
         The total number of pages contained in this report is 16.

<PAGE>

                      PART I. - FINANCIAL INFORMATION

Item 1.  Financial Statements

The  unaudited  condensed financial statements included  herein  have  been
prepared  by  the Registrant (herein also referred to as the "Partnership")
in  accordance  with generally accepted accounting principles  for  interim
financial information and with the instructions to Form 10-Q and Rule 10-01
of Regulation S-X.  Accordingly, they do not include all of the information
and  footnotes  required  by generally accepted accounting  principles  for
complete   financial  statements.   In  the  opinion  of  management,   all
adjustments necessary for a fair presentation have been included and are of
a  normal  recurring nature.  The financial statements should  be  read  in
conjunction with the audited financial statements and the note thereto  for
the  year ended December 31, 1997 which are found in the Registrant's  Form
10-K  Report  for  1997 filed with the Securities and Exchange  Commission.
The December 31, 1997 balance sheet included herein has been taken from the
Registrant's  1997 Form 10-K Report.  Operating results for the  three  and
nine  month periods ended September 30, 1998 are not necessarily indicative
of the results that may be expected for the full year.

<PAGE>

         Southwest Royalties Institutional Income Fund XI-A, L.P.
                                     
                              Balance Sheets

                                              September 30,   December 31,
                                                   1998           1997
                                              -------------   ------------
                                               (unaudited)
Assets

Current assets
 Cash and cash equivalents                     $    9,742         52,190
 Receivable from Managing General Partner          34,094         85,473
  Accounts receivable                                  -         53,536
                                                              -----------
  -------
     Total current assets                          43,836        191,199
                                                ---------      ---------
Oil and gas properties - using the
 full cost method of accounting                 2,100,504      2,105,397
  Less accumulated depreciation,
   depletion and amortization                   1,190,319        952,822
                                                ---------      ---------
     Net oil and gas properties                   910,185      1,152,575
                                                ---------      ---------
                                               $  954,021      1,343,774
                                                =========      =========


Liabilities and Partners' Equity

Current liability - Distribution payable       $       96              -
                                                ---------      ---------
Partners' equity
 General partners                                (23,558)       (12,839)
 Limited partners                                 977,483      1,356,613
                                                ---------      ---------
     Total partners' equity                       953,925      1,343,774
                                                ---------      ---------
                                               $  954,021      1,343,774
                                                =========      =========
<PAGE>

         Southwest Royalties Institutional Income Fund XI-A, L.P.
                                     
                         Statements of Operations
                                (unaudited)


                                Three Months Ended    Nine Months Ended
                                  September 30,         September 30,
                                  1998      1997        1998      1997
                                  ----      ----        ----      ----

Revenues

Income from net profits
 interests                   $    33,644    44,237      79,528   196,366
Interest                              24       182         970       928
Miscellaneous income               9,937    12,425    (45,159)    32,331
                                  ------   -------     -------   -------
                                  43,605    56,844      35,339   229,625
                                  ------   -------     -------   -------
Expenses

General and administrative        13,151    10,558      46,691    39,345
Depreciation, depletion and
 amortization                     16,000    34,490      90,000   116,470
Provision for impairment of
 oil and gas properties                -         -     147,497         -
                                  ------   -------     -------   -------
                                  29,151    45,048     284,188   155,815
                                  ------   -------     -------   -------
Net income (loss)            $    14,454    11,796   (248,849)    73,810
                                  ======   =======     =======   =======

Net income (loss) allocated to:

 Managing General Partner    $     1,847     3,047       3,043    14,215
                                  ======   =======     =======   =======
 General Partner             $       205       339         338     1,580
                                  ======   =======     =======   =======
 Limited Partners            $    12,402     8,410   (252,230)    58,015
                                  ======   =======     =======   =======
  Per limited partner unit   $      2.29      1.55      (46.55)    10.71
                                  ======   =======     =======   =======

<PAGE>

         Southwest Royalties Institutional Income Fund XI-A, L.P.
                                     
                         Statements of Cash Flows
                                (unaudited)


                                                      Nine Months Ended
                                                        September 30,
                                                       1998       1997
                                                       ----       ----
Cash flows from operating activities

 Cash received from income from net
  profits interests                                $  121,048    289,965
 Cash paid to suppliers                              (30,105)   (39,345)
 Interest received                                        970        928
                                                      -------    -------
  Net cash provided by operating activities            91,913    251,548
                                                      -------    -------
Cash flows provided by investing activities

 Cash received from sale of oil and gas
  property interest                                     6,543          -
                                                      -------    -------
Cash flows used in financing activities

 Distributions to partners                          (140,904)  (246,841)
                                                      -------    -------
Net increase (decrease) in cash and cash
 equivalents                                         (42,448)      4,707

 Beginning of period                                   52,190      6,595
                                                      -------    -------
 End of period                                     $    9,742     11,302
                                                      =======    =======

                                                             (continued)
<PAGE>

         Southwest Royalties Institutional Income Fund XI-A, L.P.
                                     
                    Statements of Cash Flows, continued
                                (unaudited)


                                                      Nine Months Ended
                                                        September 30,
                                                       1998       1997
                                                       ----       ----
Reconciliation of net income (loss) to net
 cash provided by operating activities

Net income (loss)                                  $(248,849)     73,810

Adjustments to reconcile net income (loss) to
 net cash provided by operating activities

 Depreciation, depletion and amortization              90,000    116,470
 Provision for impairment of oil and gas properties              147,497
-
 Decrease in receivables                               41,520     61,268
 Increase in payables                                  61,745          -
                                                      -------    -------
Net cash provided by operating activities          $   91,913    251,548
                                                      =======    =======


<PAGE>
         Southwest Royalties Institutional Income Fund XI-A, L.P.
                                     
                       Note to Financial Statements
                                     

Subsequent Events

The  Partnership, subsequent to September 30, 1998 sold its interest  in  a
portion   of  non-operated  oil  and  gas  properties.   The  Partnership's
interests  in  the  wells were sold for $70,735 net  proceeds,  after  post
closing adjustments.  The proceeds from the sale represented 7.55%  of  the
Partnership's total assets at December 31, 1997.


<PAGE>

Item 2.  Management's  Discussion and Analysis of Financial  Condition  and
       Results of Operations
General
Southwest  Royalties Institutional Income Fund XI-A, L.P. (the Partnership)
was  organized  as  a Delaware limited partnership on  May  5,  1992.   The
offering  of such limited partnership interests began August 20,  1992,  as
part  of  a  shelf  offering registered under the name Southwest  Royalties
Institutional 1992-93 Income Program.  Minimum capital requirements for the
Partnership  were met on December 10, 1992 and the offering  concluding  on
April 30, 1993 with total limited partner contributions of $2,709,000.

The Partnership was formed to acquire royalty and net profits interests  in
producing  oil  and  gas properties, to produce and market  crude  oil  and
natural  gas  produced  from such properties, and  to  distribute  the  net
proceeds from operations to the limited and general partners.  Net revenues
from  producing  oil  and gas properties will not be  reinvested  in  other
revenue  producing  assets except to the extent that production  facilities
and wells are improved or reworked or where methods are employed to improve
or enable more efficient recovery of oil and gas reserves.

Increases   or   decreases   in  Partnership   revenues   and,   therefore,
distributions  to partners will depend primarily on changes in  the  prices
received  for  production,  changes in volumes of  production  sold,  lease
operating  expenses, enhanced recovery projects, offset drilling activities
pursuant  to farm-out arrangements, sales of properties, and the  depletion
of  wells.   Since  wells deplete over time, production  can  generally  be
expected to decline from year to year.

Well  operating costs and general and administrative costs usually decrease
with   production   declines;  however,  these  costs  may   not   decrease
proportionately.  Net income available for distribution to the partners  is
therefore expected to fluctuate in later years based on these factors.

Based  on  current  conditions, management does not  anticipate  performing
workovers.  The Partnership could possibly experience a steady decline.

Oil and Gas Properties
Oil  and  gas  properties  are accounted for at cost  under  the  full-cost
method.  Under this method, all productive and nonproductive costs incurred
in  connection with the acquisition, exploration and development of oil and
gas  reserves  are capitalized.  Gain or loss on the sale of  oil  and  gas
properties  is not recognized unless significant oil and gas  reserves  are
involved.

The  Partnership's policy for depreciation, depletion and  amortization  of
oil  and  gas  properties is computed under the units  of  revenue  method.
Under the units of revenue method, depreciation, depletion and amortization
is  computed  on  the  basis of current gross revenues from  production  in
relation  to future gross revenues, based on current prices, from estimated
production of proved oil and gas reserves.

Should the net capitalized costs exceed the estimated present value of  oil
and gas reserves, discounted at 10%, such excess costs would be charged  to
current  expense.   For  the  quarter ended September  30,  1998,  the  net
capitalized  costs  did  not  exceed  the  estimated  present   value.    A
continuation  of  the oil price environment experienced  during  the  first
three  quarters  of  1998  will have an adverse  affect  on  the  Company's
revenues  and  operating cash flow.  Also, further declines in  oil  prices
could result in additional decreases in the carrying value of the Company's
oil and gas properties.

<PAGE>
Results of Operations

A.  General Comparison of the Quarters Ended September 30, 1998 and 1997

The  following  table  provides certain information  regarding  performance
factors for the quarters ended September 30, 1998 and 1997:

                                                 Three Months
                                                    Ended        Percentage
                                                September 30,     Increase
                                                1998      1997   (Decrease)
                                                ----      ----   ---------
Average price per barrel of oil            $   11.31     17.30   (35%)
Average price per mcf of gas               $    1.97      1.98    (1%)
Oil production in barrels                      3,600     3,800    (5%)
Gas production in mcf                         32,900    42,500   (23%)
Income from net profits interests          $  33,644    44,237   (24%)
Partnership distributions                  $   1,000    40,000   (98%)
Limited partner distributions              $     900    36,000   (98%)
Per unit distribution to limited partners  $     .17      6.64   (98%)
Number of limited partner units                5,418     5,418

Revenues

The  Partnership's income from net profits interests decreased  to  $33,644
from   $44,237  for  the  quarters  ended  September  30,  1998  and  1997,
respectively,  a  decrease  of 24%.  The principal  factors  affecting  the
comparison  of  the  quarters ended September 30,  1998  and  1997  are  as
follows:

1.   The  average  price  for a barrel of oil received by  the  Partnership
     decreased  during the quarter ended September 30, 1998 as compared  to
     the  quarter  ended  September 30, 1997 by 35%, or $5.99  per  barrel,
     resulting  in a decrease of approximately $22,800 in income  from  net
     profits  interests.  Oil sales represented 39% of total  oil  and  gas
     sales  during the quarter ended September 30, 1998 as compared to  44%
     during the quarter ended September 30, 1997.

     The  average  price  for  an mcf of gas received  by  the  Partnership
     decreased during the same period by 1%, or $.01 per mcf, resulting  in
     a decrease of approximately $400 in income from net profits interests.

     The  total  decrease in income from net profits interests due  to  the
     change in prices received from oil and gas production is approximately
     $23,200.  The market price for oil and gas has been extremely volatile
     over  the  past  decade, and management expects a  certain  amount  of
     volatility to continue in the foreseeable future.

<PAGE>

2.  Oil  production decreased approximately 200 barrels or  5%  during  the
    quarter  ended  September 30, 1998 as compared  to  the  quarter  ended
    September 30, 1997, resulting in a decrease of approximately $2,300  in
    income from net profits interests.

    Gas production decreased approximately 9,600 mcf or 23% during the same
    period, resulting in a decrease of approximately $18,900 in income from
    net profits interests.

    The  total  decrease in income from net profits interests  due  to  the
    change  in  production  is  approximately  $21,200.   The  decrease  is
    primarily attributable to sharp natural decline and property sales.

3.  Lease  operating  costs  and  production  taxes  were  32%  lower,   or
    approximately $33,600 less during the quarter ended September 30,  1998
    as  compared to the quarter ended September 30, 1997.  The decrease  is
    due to workovers performed during 1997.

Costs and Expenses

Total costs and expenses decreased to $29,151 from $45,048 for the quarters
ended  September 30, 1998 and 1997, respectively, a decrease of  35%.   The
decrease  is  the  result of lower depletion expense, partially  offset  an
increase in general and administrative expense.

1.  General and administrative costs consists of independent accounting and
    engineering  fees,  computer services, postage,  and  Managing  General
    Partner  personnel costs.  General and administrative  costs  increased
    25% or approximately $2,600 during the quarter ended September 30, 1998
    as  compared  to the quarter ended September 30, 1997. The increase  in
    general  and administrative costs are due largely to higher  accounting
    fees.   The  10-Q's  are  now  required to be  reviewed  based  on  new
    accounting pronouncements.

2.  Depletion  expense decreased to $16,000 for the quarter ended September
    30,  1998 from $32,000 for the same period in 1997.  This represents  a
    decrease  of 50%.  Depletion is calculated using the units  of  revenue
    method  of  amortization based on a percentage of current period  gross
    revenues  to  total future gross oil and gas revenues, as estimated  by
    the Partnership's independent petroleum consultants.

<PAGE>

B.   General Comparison of the Nine Month Periods Ended September 30,  1998
and 1997

The  following  table  provides certain information  regarding  performance
factors for the nine month periods ended September 30, 1998 and 1997:

                                                 Nine Months
                                                    Ended        Percentage
                                                September 30,     Increase
                                                1998      1997   (Decrease)
                                                ----      ----   ---------
Average price per barrel of oil            $   11.64     19.49    (40%)
Average price per mcf of gas               $    1.86      2.13    (13%)
Oil production in barrels                     10,800    12,300    (12%)
Gas production in mcf                         97,400   125,100    (22%)
Income from net profits interests          $  79,528   196,366    (60%)
Partnership distributions                  $ 141,000   247,000    (43%)
Limited partner distributions              $ 126,900   222,300    (43%)
Per unit distribution to limited partners  $   23.42     41.03    (43%)
Number of limited partner units                5,418     5,418

Revenues

The  Partnership's income from net profits interests decreased  to  $79,528
from  $196,366  for  the nine months ended September  30,  1998  and  1997,
respectively,  a  decrease  of 60%.  The principal  factors  affecting  the
comparison  of  the nine months ended September 30, 1998 and  1997  are  as
follows:

1.  The  average  price  for a barrel of oil received  by  the  Partnership
    decreased  during the nine months ended September 30, 1998 as  compared
    to  the  nine  months ended September 30, 1997 by  40%,  or  $7.85  per
    barrel, resulting in a decrease of approximately $96,600 in income from
    net  profits interests.  Oil sales represented 41% of total oil and gas
    sales  during the nine months ended September 30, 1998 as  compared  to
    47% during the nine months ended September 30, 1997.

    The  average  price  for  an  mcf of gas received  by  the  Partnership
    decreased during the same period by 13%, or $.27 per mcf, resulting  in
    a  decrease  of  approximately  $33,800  in  income  from  net  profits
    interests.

    The  total  decrease in income from net profits interests  due  to  the
    change  in prices received from oil and gas production is approximately
    $130,400.  The market price for oil and gas has been extremely volatile
    over  the  past  decade, and management expects  a  certain  amount  of
    volatility to continue in the foreseeable future.

<PAGE>

2.  Oil  production decreased approximately 1,500 barrels or 12% during the
    nine  months  ended September 30, 1998 as compared to the  nine  months
    ended  September  30,  1997, resulting in a decrease  of  approximately
    $17,500 in income from net profits interests.

    Gas  production  decreased approximately 27,700 mcf or 22%  during  the
    same period, resulting in a decrease of approximately $51,500 in income
    from net profits interests.

    The  total  decrease in income from net profits interests  due  to  the
    change  in  production  is  approximately  $69,000.   The  decrease  is
    primarily  attributable to sharp natural decline, gas  plant  explosion
    that effected 2 months of production and property sales.

3.  Lease  operating  costs  and  production  taxes  were  27%  lower,   or
    approximately  $83,200 less during the nine months ended September  30,
    1998  as  compared to the nine months ended September  30,  1997.   The
    decrease is a result of workover costs incurred in 1997.

Costs and Expenses

Total  costs and expenses increased to $284,188 from $155,815 for the  nine
months ended September 30, 1998 and 1997, respectively, a increase of  82%.
The  increase  is the result of higher general and administrative  expense,
partially offset by a decrease in depletion expense.

1.  General and administrative costs consists of independent accounting and
    engineering  fees,  computer services, postage,  and  Managing  General
    Partner  personnel costs.  General and administrative  costs  increased
    19%  or approximately $7,300 during the nine months ended September 30,
    1998  as  compared to the nine months ended September  30,  1997.   The
    increase in general and administrative costs are due largely to  higher
    accounting fees.  The 10-Q's are now required to be reviewed  based  on
    new accounting pronouncements.

2.  Depletion  expense  decreased to $90,000  for  the  nine  months  ended
    September  30,  1998 from $109,000 for the same period in  1997.   This
    represents a decrease of 17%.  Depletion is calculated using the  units
    of  revenue  method  of amortization based on a percentage  of  current
    period  gross  revenues to total future gross oil and gas revenues,  as
    estimated by the Partnership's independent petroleum consultants.

3. The  net capitalized costs for the nine months ended September 30,  1998
   exceeded   the  estimated  present  value  of  oil  and  gas   reserves,
   discounted  at  10%  in the amount of $147,497, such excess  costs  were
   charged  to current expense.  The write-down had the effect of  reducing
   net income, but did not affect cash flow or partner distributions.

<PAGE>

Liquidity and Capital Resources
The  primary source of cash is from operations, the receipt of income  from
interests in oil and gas properties.  The Partnership knows of no  material
change, nor does it anticipate any such change.

Cash  flows provided by operating activities were approximately $91,900  in
the  nine  months  ended  September 30, 1998 as compared  to  approximately
$251,500  in the nine months ended September 30, 1997.  The primary  source
of the 1998 cash flow from operating activities was profitable operations.

Cash  flows provided by investing activities were approximately  $6,500  in
the  nine  months  ended  September 30, 1998.  There  were  no  cash  flows
provided  by  investing activities in the nine months ended  September  30,
1997.

Cash flows used in financing activities were approximately $140,900 in  the
nine  months ended September 30, 1998 as compared to approximately $246,800
in  the  nine  months ended September 30, 1997.  The only use in  financing
activities was the distributions to partners.

Total  distributions during the nine months ended September 30,  1998  were
$141,000  of  which  $126,900 was distributed to the limited  partners  and
$14,100  to  the  general partners.  The per unit distribution  to  limited
partners during the nine months ended September 30, 1998 was $23.42.  Total
distributions during the nine months ended September 30, 1997 were $247,000
of  which  $222,300 was distributed to the limited partners and $24,700  to
the general partners.  The per unit distribution to limited partners during
the nine months ended September 30, 1997 was $41.03.

The  sources  for  the  1998 distributions of $141,000  were  oil  and  gas
operations  of approximately $91,900, the change in oil and gas  properties
of  approximately $6,500, with the balance from available cash on  hand  at
the  beginning  of  the period.  The source for the 1997  distributions  of
$247,000 was oil and gas operations of approximately $251,500, resulting in
excess cash for contingencies or subsequent distributions.

Since  inception of the Partnership, cumulative monthly cash  distributions
of  $1,496,448 have been made to the partners.  As of September  30,  1998,
$1,366,498 or $252.21 per limited partner unit has been distributed to  the
limited partners, representing a 50% return of the capital contributed.

As  of  September  30, 1998, the Partnership had approximately  $43,700  in
working  capital.   The  Managing  General  Partner  knows  of  no  unusual
contractual commitments and believes the revenues generated from operations
are adequate to meet the needs of the Partnership.


<PAGE>


Information Systems for the Year 2000

The  Partnership  relies  on the Managing General Partner  for  their  data
processing  requirements.   This includes use of  a  program  designed  and
implemented  by Midland Southwest Software, the Managing General  Partner's
software subsidiary.  Midland Southwest Software currently has a year  2000
plan  in  effect.   They have surveyed existing programs and  hardware  and
estimate a compliance date of early 1999.  Determination of the total  cost
in connection with the year 2000 compliance issue is difficult to determine
due  to the fact that they are in the process of developing their new  1998
version  of  marketed  oil  and gas software, which  has,  from  inception,
included  year 2000 compliance.  Third party software programs utilized  by
the  Managing General Partner are either in compliance or are not  affected
by  the  year  2000,  with the exception of the payroll service,  which  is
currently modifying its system to accurately handle the Year 2000 issue.

The  Managing  General  Partner has not completed  its  evaluation  of  its
vendors  or  suppliers systems to determine the effect, if  any,  the  non-
compliance  of  such systems would have on the operations of  the  Managing
General  Partner.  Plans are under way to perform an audit in late 1998  or
early  1999  to determine the effect of non-compliance of its  vendors  and
suppliers  on the Managing General Partner and thus formulate a contingency
plan.

A  potential source of risk includes, but is not limited to, the  inability
of  principal  purchasers and suppliers to be year  2000  compliant,  which
could  have a material effect on the Managing General Partner's production,
cash  flow  and overall financial condition, notwithstanding  the  Managing
General  Partner's  actions to prepare its own  information  systems.   The
Managing  General  Partner currently does not have a  contingency  plan  in
place to cover any unforeseen problems encountered that relate to the  year
2000, but intends to produce one before the end of the fiscal year.



<PAGE>

                        PART II - OTHER INFORMATION
                                     

Item 1.  Legal Proceedings

         None

Item 2.  Changes in Securities

         None

Item 3.  Defaults Upon Senior Securities

         None

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

         None

Item 5.  Other Information

         None

Item 6.  Exhibits and Reports on Form 8-K

         (a)Exhibits:

             27 Financial Data Schedule

         (b) No reports on Form 8-K were filed during the quarter for
             which this report is filed.

            
            
<PAGE>

                                SIGNATURES


Pursuant  to the requirements 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.

                                   Southwest Royalties Institutional Income
                                   Fund XI-A, L.P.
                                   a Delaware limited partnership

                                   By:  Southwest Royalties, Inc.
                                        Managing General Partner


                                   By:  /s/ Bill E. Coggin
                                        ------------------------------
                                        Bill E. Coggin, Vice President
                                        and Chief Financial Officer

Date:     November 15, 1998

<PAGE>