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                                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 March 31, 2000

                                    OR

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

For the transition period from ________________ to ________________

Commission File Number 33-47668-02

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

Delaware                                        75-2427289
(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 14.


                     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 notes thereto for
the  year ended December 31, 1999 which are found in the Registrant's  Form
10-K  Report  for  1999 filed with the Securities and Exchange  Commission.
The December 31, 1999 balance sheet included herein has been taken from the
Registrant's 1999 Form 10-K Report.  Operating results for the three  month
period  ended March 31, 2000 are not necessarily indicative of the  results
that may be expected for the full year.


         Southwest Royalties Institutional Income Fund XI-B, L.P.

                              Balance Sheets


                                                  March 31,     December 31,
                                                     2000           1999
                                                  ---------     ------------
                                                 (unaudited)
  Assets

Current assets:
 Cash and cash equivalents                    $     25,280         24,784
 Receivable from Managing General Partner           46,031         39,956
 Distribution receivable                                70             70
                                                 ---------      ---------
    Total current assets                            71,381         64,810
                                                 ---------      ---------
Oil and gas properties - using the
 full-cost method of accounting                  2,006,334      2,006,334
  Less accumulated depreciation,
   depletion and amortization                    1,676,721      1,665,721
                                                 ---------      ---------
    Net oil and gas properties                     329,613        340,613
                                                 ---------      ---------
                                              $    400,994        405,423
                                                 =========      =========

  Liabilities and Partners' Equity

Partners' equity:
 General partners                             $      7,235          6,578
 Limited partners                                  393,759        398,845
                                                 ---------      ---------
    Total partners' equity                         400,994        405,423
                                                 ---------      ---------
                                              $    400,994        405,423
                                                 =========      =========


         Southwest Royalties Institutional Income Fund XI-B, L.P.

                         Statements of Operations
                               (unaudited)


                                                        Three Months Ended
                                                            March 31,
                                                          2000      1999
                                                          ----      ----

    Revenues

Net profits interests                               $    71,154     14,740
Interest income                                             436         14
                                                        -------    -------
                                                         71,590     14,754
                                                        -------    -------

    Expenses

General and administrative                               10,019     11,714
Depreciation, depletion and amortization                 11,000     13,102
                                                        -------    -------
                                                         21,019     24,816
                                                        -------    -------
Net income (loss)                                   $    50,571   (10,062)
                                                        =======    =======
Net income (loss) allocated to:

 Managing General Partner                           $     5,541        274
                                                        =======    =======
 General partner                                    $       616         31
                                                        =======    =======
 Limited partners                                   $    44,414   (10,367)
                                                        =======    =======
  Per limited partner unit                          $      9.16     (2.14)
                                                        =======    =======


         Southwest Royalties Institutional Income Fund XI-B, L.P.

                         Statements of Cash Flows
                               (unaudited)


                                                        Three Months Ended
                                                            March 31,
                                                          2000      1999
                                                          ----      ----

Cash flows from operating activities:

 Cash received from oil and gas sales               $    68,767     30,929
 Cash paid to suppliers                                (13,707)   (30,998)
 Interest received                                          436         14
                                                        -------    -------
  Net cash provided by (used in) operating
    activities                                           55,496       (55)
                                                        -------    -------
Cash flows from investing activities

 Sales of oil and gas properties                              -      1,571
                                                        -------    -------
Cash flows used in financing activities:

 Distributions to partners                             (55,000)          -
                                                        -------    -------
Net increase in cash and cash equivalents                   496      1,516

 Beginning of period                                     24,784      2,410
                                                        -------    -------
 End of period                                      $    25,280      3,926
                                                        =======    =======

                                                               (continued)



         Southwest Royalties Institutional Income Fund XI-B, L.P.

                   Statements of Cash Flows, continued
                               (unaudited)


                                                        Three Months Ended
                                                            March 31,
                                                          2000      1999
                                                          ----      ----

Reconciliation of net income (loss) to net cash
 provided by (used in) operating activities:

Net income (loss)                                   $    50,571   (10,062)

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

  Depletion, depreciation and amortization               11,000     13,102
  (Increase) decrease in receivables                    (2,387)     16,189
  Increase (decrease) in payables                       (3,688)   (19,284)
                                                        -------    -------
Net cash provided by (used in) operating activities $    55,496       (55)
                                                        =======    =======


         Southwest Royalties Institutional Income Fund XI-B, L.P.
                     (a Delaware limited partnership)

                      Notes to Financial Statements

1.   Organization
     Southwest Royalties Institutional Income Fund XI-B, L.P. was organized
     under  the laws of the state of Delaware on August 31, 1993,  for  the
     purpose  of acquiring producing oil and gas properties and to  produce
     and market crude oil and natural gas produced from such properties for
     a  term  of 50 years, unless terminated at an earlier date as provided
     for  in the Partnership Agreement.  The Partnership will sell its  oil
     and  gas  production  to a variety of purchasers with  the  prices  it
     receives  being  dependent upon the oil and  gas  economy.   Southwest
     Royalties,  Inc.  serves as the Managing General  Partner  and  H.  H.
     Wommack, III, as the individual general partner.  Partnership  profits
     and losses, as well as all items of income, gain, loss, deduction,  or
     credit, will be credited or charged as follows:

                                                    Limited   General
                                                    Partner   Partners (1)
                                                    -------   --------
     Organization and offering expenses (2)        100%          -
     Acquisition costs                             100%          -
     Operating costs                                90%        10%
     Administrative costs (3)                       90%        10%
     Direct costs                                   90%        10%
     All other costs                                90%        10%
     Interest income earned on capital
                                          contributions       100%    -
     Oil and gas revenues                           90%        10%
     All other revenues                             90%        10%
     Amortization                                  100%          -
     Depletion allowances                          100%          -

          (1)   H.H.  Wommack,  III,  President  of  the  Managing  General
          Partner, is an additional general partner in the Partnership  and
          has  a  one percent interest in the Partnership.  Mr. Wommack  is
          the  majority  stockholder of the Managing General Partner  whose
          continued  involvement in Partnership management is important  to
          its  operations.  Mr. Wommack, as a general partner, shares  also
          in Partnership liabilities.

          (2)   Organization and Offering Expenses (including all  cost  of
          selling  and  organizing the offering) include a payment  by  the
          Partnership of an amount equal to three percent (3%)  of  Capital
          Contributions   for   reimbursement  of   such   expenses.    All
          Organization Costs (which excludes sales commissions and fees) in
          excess  of  three  percent  (3%) of  Capital  Contributions  with
          respect to the Partnership will be allocated to and paid  by  the
          Managing General Partner.

          (3)   Administrative  Costs will be paid from  the  Partnership's
          revenues;  however; Administrative Costs in the Partnership  year
          in  excess of two percent (2%) of Capital Contributions shall  be
          allocated to and paid by the Managing General Partner.

2.   Summary of Significant Accounting Policies
     The  interim financial information as of March 31, 2000, and  for  the
     three  months ended March 31, 2000, is unaudited.  Certain information
     and  footnote  disclosures normally included in  financial  statements
     prepared  in accordance with generally accepted accounting  principles
     have been condensed or omitted in this Form 10-Q pursuant to the rules
     and  regulations of the Securities and Exchange Commission.   However,
     in  the  opinion  of  management, these interim  financial  statements
     include all the necessary adjustments to fairly present the results of
     the interim periods and all such adjustments are of a normal recurring
     nature.  The interim consolidated financial statements should be  read
     in  conjunction  with the audited financial statements  for  the  year
     ended December 31, 1999.


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

General

Southwest Royalties Institutional Income Fund XI-B, L.P. was organized as a
Delaware  limited  partnership on August 13, 1993.  The  offering  of  such
limited  partnership interests began October 25, 1993, 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 8, 1993, with the offering of limited partnership interests
concluding  August  20, 1994, with total limited partner  contributions  of
$2,425,500.

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  any  net
proceeds from operations to the general and limited partners.  Net revenues
from  producing  oil  and gas properties will not be  reinvested  in  other
revenue producing assets except to the extent that producing facilities and
wells are reworked or where methods are employed to improve or enable  more
efficient  recovery  of oil and gas reserves.  The  economic  life  of  the
Partnership will thus depend on the period over which the Partnership's oil
and gas reserves are economically recoverable.

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 anticipates performing  workovers
during the year to enhance production.  The Partnership should experience a
normal decline of 11% per year

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.  As of March 31, 2000, the net capitalized costs did  not
exceed the estimated present value of oil and gas reserves.




Results of Operations

A.  General Comparison of the Quarters Ended March 31, 2000 and 1999

The  following  table  provides certain information  regarding  performance
factors for the quarters ended March 31, 2000 and 1999:

                                               Three Months
                                                  Ended         Percentage
                                                         March          31,
Increase
                                              2000      1999    (Decrease)
                                              ----      ----    ----------
Average price per barrel of oil           $   29.93     10.24     192%
Average price per mcf of gas              $    3.31      1.57     111%
Oil production in barrels                     1,820     2,300    (21%)
Gas production in mcf                        18,600    18,300       2%
Income from net profits interests         $  71,154    14,740     383%
Partnership distributions                 $  55,000         -     100%
Limited partner distributions             $  49,500         -     100%
Per unit distribution to limited
 partners                                 $   10.20         -     100%
Number of limited partner units               4,851     4,851

Revenues

The  Partnership's income from net profits interests increased  to  $71,154
from  $14,740 for the quarters ended March 31, 2000 and 1999, respectively,
an increase of 383%.  The principal factors affecting the comparison of the
quarters ended March 31, 2000 and 1999 are as follows:

1.  The  average  price  for a barrel of oil received  by  the  Partnership
    increased  during the quarter ended March 31, 2000 as compared  to  the
    quarter  ended March 31, 1999 by 192%, or $19.69 per barrel,  resulting
    in  an  increase  of approximately $45,300 in income from  net  profits
    interests.  Oil sales represented 47% of total oil and gas sales during
    the  quarter ended March 31, 2000 as compared to 45% during the quarter
    ended March 31, 1999.

    The  average  price  for  an  mcf of gas received  by  the  Partnership
    increased  during the same period by 111%, or $1.74 per mcf,  resulting
    in  an  increase  of approximately $31,800 in income from  net  profits
    interests.

    The  total  increase in income from net profits interests  due  to  the
    change  in prices received from oil and gas production is approximately
    $77,100.   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.


2.  Oil  production decreased approximately 480 barrels or 21%  during  the
    quarter ended March 31, 2000 as compared to the quarter ended March 31,
    1999,  resulting in a decrease of approximately $14,400 in income  from
    net profits interests.

    Gas  production increased approximately 300 mcf or 2% during  the  same
    period, resulting in an increase of approximately $1,000 in income from
    net profits interests.

    The  net total decrease in income from net profits interests due to the
    change  in  production  is  approximately  $13,400.   The  decrease  in
    production  is primarily due to the occurrence of payout on the  Dagger
    Draw  lease.  Upon the occurrence of payout the percentage of ownership
    for the Partnership decreased significantly.

3.  Lease  operating  costs  and  production  taxes  were  20%  higher,  or
    approximately $7,400 more during the quarter ended March  31,  2000  as
    compared  to  the  quarter ended March 31, 1999.  The increase  is  due
    primarily  to major repairs and maintenance performed during the  first
    quarter of 2000.

Costs and Expenses

Total costs and expenses decreased to $21,019 from $24,816 for the quarters
ended  March  31,  2000  and 1999, respectively, a decrease  of  15%.   The
decrease  is  the  result of lower general and administrative  expense  and
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  decreased
    14% or approximately $1,700 during the quarter ended March 31, 2000  as
    compared  to  the  quarter ended March 31, 1999.  The decrease  is  the
    result  of  the  Managing General Partner reducing the management  fees
    paid by the Partnership.

2.  Depletion expense decreased to $11,000 for the quarter ended March  31,
    2000  from  $13,000  for the same period in 1999.   This  represents  a
    decrease  of 15%.  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.   Contributing
    factors  to  the  decline in depletion expense between the  comparative
    periods were the increase in gross oil and gas revenue and the increase
    in the price of oil used to determine the Partnership's reserves.


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 (used in) operating activities were  approximately
$55,500  in  the quarter ended March 31, 2000 as compared to  approximately
$(55) in the quarter ended March 31, 1999.  The primary source of the  2000
cash flow from operating activities was profitable operations.

There were no cash flows in investing activities in the quarter ended March
31,  2000.  Cash flows from investing activities in the quarter ended March
31, 1999 were approximately $1,600.

Cash  flows used in financing activities were $55,000 in the quarter  ended
March  31, 2000.  There were no cash flows used in financing activities  in
the  quarter ended March 31, 1999. The only use in financing activities was
the distributions to partners.

Total distributions during the quarter ended March 31, 2000 were $55,000 of
which  $49,500  was distributed to the limited partners and $5,500  to  the
general partners.  The per unit distribution to limited partners during the
quarter  ended  March  31, 2000 was $10.20.  There  were  no  distributions
during the quarter ended March 31, 1999.

The source for the 2000 distributions of $55,000 was oil and gas operations
of  approximately  $55,500, resulting in excess cash for  contingencies  or
subsequent distributions to partners.

Since  inception of the Partnership, cumulative monthly cash  distributions
of  $1,157,138  have  been made to the partners.  As  of  March  31,  2000,
$1,055,452 or $217.57 per limited partner unit has been distributed to  the
limited partners, representing a 44% return of the capital contributed.

As  of March 31, 2000, the Partnership had approximately $71,400 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.

Liquidity - Managing General Partner

The  Managing General Partner has a highly leveraged capital structure with
over  $50.1  million principal and $17.5 million interest payments  due  in
2000  on  its  debt  obligations. Due to the severely  depressed  commodity
prices  experienced  during the last quarter of 1997, throughout  1998  and
continuing through the second quarter of 1999 the Managing General  Partner
is  experiencing difficulty in generating sufficient cash flow to meet  its
obligations  and sustain its operations.  The Managing General  Partner  is
currently  in  the  process  of renegotiating  the  terms  of  its  various
obligations  with its creditors and/or attempting to seek  new  lenders  or
equity  investors.   Additionally,  the  Managing  General  Partner   would
consider disposing of certain assets in order to meet its obligations.

There  can  be  no  assurance  that  the Managing  General  Partner's  debt
restructuring efforts will be successful or that the lenders will agree  to
a   course   of  action  consistent  with  the  Managing  General  Partners
requirements  in restructuring the obligations.  Even if such agreement  is
reached,  it  may  require approval of additional  lenders,  which  is  not
assured.  Furthermore, there can be no assurance that the sales  of  assets
can  be  successfully  accomplished on terms  acceptable  to  the  Managing
General   Partner.   Under  current  circumstances,  the  Managing  General
Partner's  ability to continue as a going concern depends upon its  ability
to  (1)  successfully  restructure  its obligations  or  obtain  additional
financing  as  may  be  required, (2) maintain  compliance  with  all  debt
covenants, (3) generate sufficient cash flow to meet its obligations  on  a
timely  basis, and (4) achieve satisfactory levels of future earnings.   If
the  Managing  General Partner is unsuccessful in its efforts,  it  may  be
unable to meet its obligations making it necessary to undertake such  other
actions as may be appropriate to preserve asset values.


                       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)  Reports on Form 8-K:

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

                                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-B, L.P.
                              a Delaware limited partnership


                              By:  Southwest Royalties, Inc.
                                   Managing General Partner


                              By:  /s/ J Steven Person
                                   ------------------------------
                                   J Steven Person, Vice-President of
                                   Marketing and Chief Financial Officer
                                   of Southwest Royalties, Inc.
                                   the Managing General Partner



Date:  May 15, 2000