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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 June 30, 2001

                                    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, 2000 which are found in the Registrant's  Form
10-K  Report  for  2000 filed with the Securities and Exchange  Commission.
The December 31, 2000 balance sheet included herein has been taken from the
Registrant's  2000 Form 10-K Report.  Operating results for the  three  and
six month periods ended June 30, 2001 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


                                                 June 30,      December 31,
                                                   2001            2000
                                                ---------      ------------
                                               (unaudited)
  Assets
  ------
Current assets:
 Cash and cash equivalents                    $     85,508         36,446
 Receivable from Managing General Partner           29,859         59,613
                                                 ---------      ---------
    Total current assets                           115,367         96,059
                                                 ---------      ---------
Oil and gas properties - using the
 full-cost method of accounting                  1,986,334      2,006,334
  Less accumulated depreciation,
   depletion and amortization                    1,707,721      1,682,721
                                                 ---------      ---------
    Net oil and gas properties                     278,613        323,613
                                                 ---------      ---------
                                              $    393,980        419,672
                                                 =========      =========

  Liabilities and Partners' Equity
  --------------------------------
Partners' equity:
 General partners                             $      9,634          9,703
 Limited partners                                  384,346        409,969
                                                 ---------      ---------
    Total partners' equity                         393,980        419,672
                                                 ---------      ---------
                                              $    393,980        419,672
                                                 =========      =========


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

                         Statements of Operations
                               (unaudited)


                                 Three Months Ended      Six Months Ended
                                       June 30,              June 30,
                                    2001      2000        2001      2000
                                   -----     -----       -----     -----
  Revenues

Income from net profits
 interests                    $    54,130     75,605    168,032    146,758
Interest income from
 operations                           857        510      1,471        946
                                  -------    -------    -------    -------
                                   54,987     76,115    169,503    147,704
                                  -------    -------    -------    -------

  Expenses

General and administrative         10,448      9,985     20,195     20,004
Depreciation, depletion and
 amortization                      15,000      2,000     25,000     13,000
                                  -------    -------    -------    -------
                                   25,448     11,985     45,195     33,004
                                  -------    -------    -------    -------
Net income                    $    29,539     64,130    124,308    114,700
                                  =======    =======    =======    =======
Net income allocated to:

 Managing General Partner     $     4,009      5,952     13,438     11,493
                                  =======    =======    =======    =======
 General Partner              $       445        661      1,493      1,277
                                  =======    =======    =======    =======
 Limited partners             $    25,085     57,517    109,377    101,930
                                  =======    =======    =======    =======
  Per limited partner unit    $     5.17      11.86       22.55      21.01
                                  =======    =======    =======    =======


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

                         Statements of Cash Flows
                               (unaudited)


                                                        Six Months Ended
                                                             June 30,
                                                          2001      2000
                                                         -----     -----

Cash flows from operating activities:

 Cash received from oil and gas sales               $   205,624    139,725
 Cash paid to suppliers                                (28,033)   (25,123)
 Interest received                                        1,471        946
                                                        -------   --------
  Net cash provided by operating activities             179,062    115,548
                                                        -------   --------
Cash flows from investing activities:

 Sale of oil and gas properties                          20,000          -
                                                        -------   --------
Cash flows used in financing activities:

 Distributions to partners                            (150,000)  (109,930)
                                                        -------   --------

Net increase in cash and cash equivalents                49,062      5,618

 Beginning of period                                     36,446     24,784
                                                        -------   --------
 End of period                                      $    85,508     30,402
                                                        =======   ========
Reconciliation of net income to net
 cash provided by operating activities:

Net income                                          $   124,308    114,700

Adjustments to reconcile net income to
 net cash provided by operating activities:

  Depreciation, depletion and amortization               25,000     13,000
  Decrease (increase) in receivables                     37,592    (7,033)
  Decrease in payables                                  (7,838)    (5,119)
                                                        -------    -------
Net cash provided by operating activities           $   179,062    115,548
                                                        =======    =======


         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 June 30, 2001, and  for  the
     three  and  six  months  ended June 30, 2001, 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, 2000.


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 31, 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 does not  anticipate  performing
workovers during 2001.  The Partnership could possibly experience a 11% per
year normal 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. The Partnership's capitalized costs did  not  exceed  the
estimated present value of reserves as of June 30, 2001.



Results of Operations

A.  General Comparison of the Quarters Ended June 30, 2001 and 2000

The  following  table  provides certain information  regarding  performance
factors for the quarters ended June 30, 2001 and 2000:

                                               Three Months
                                                  Ended          Percentage
                                                 June 30,         Increase
                                              2001       2000    (Decrease)
                                              ----       ----    ----------
Average price per barrel of oil         $     25.11     28.39     (12%)
Average price per mcf of gas            $      4.27      4.35      (2%)
Oil production in barrels                     1,550     1,600      (3%)
Gas production in mcf                        16,800    17,300      (3%)
Income from net profits interests       $    54,130    75,605     (28%)
Partnership distributions               $    75,000    55,000       36%
Limited partner distributions           $    67,500    49,500       36%
Per unit distribution to limited
 partners                               $     13.91     10.20       36%
Number of limited partner units               4,851     4,851

Revenues

The  Partnership's income from net profits interests decreased  to  $54,130
from $75,605 for the quarters ended June 30, 2001 and 2000, respectively, a
decrease  of  28%.  The principal factors affecting the comparison  of  the
quarters ended June 30, 2001 and 2000 are as follows:

1.  The  average  price  for a barrel of oil received  by  the  Partnership
    decreased  during the quarter ended June 30, 2001 as  compared  to  the
    quarter ended June 30, 2000 by 12%, or $3.28 per barrel, resulting in a
    decrease  of approximately $5,200 in income from net profits interests.
    Oil sales represented 35% of total oil and gas sales during the quarter
    ended  June  30, 2001 as compared to 38% during the quarter ended  June
    30, 2000.

    The  average  price  for  an  mcf of gas received  by  the  Partnership
    decreased during the same period by 2%, or $.08 per mcf, resulting in a
    decrease of approximately $1,400 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
    $6,600.   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 50 barrels or  3%  during  the
    quarter  ended June 30, 2001 as compared to the quarter ended June  30,
    2000,  resulting in a decrease of approximately $1,300 in  income  from
    net profits interests.

    Gas  production decreased approximately 500 mcf or 3% during  the  same
    period, resulting in a decrease of approximately $2,100 in income  from
    net profits interests.

    The  total  decrease in income from net profits interests  due  to  the
    change in production is approximately $3,400.

3.  Lease  operating  costs  and  production  taxes  were  7%  higher,   or
    approximately  $3,400 more during the quarter ended June  30,  2001  as
    compared to the quarter ended June 30, 2000.

Costs and Expenses

Total costs and expenses increased to $25,448 from $11,985 for the quarters
ended  June  30,  2001 and 2000, respectively, an increase  of  112%.   The
increase  is  the  result  of  higher depletion  expense  and  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 5%
    or  approximately  $500  during the quarter  ended  June  30,  2001  as
    compared to the quarter ended June 30, 2000.

2.    Depletion expense increased to $15,000 for the quarter ended June 30,
   2001 from $2,000 for the same period in 2000.  This represents an increase
   of  650%.  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 increase in
   depletion expense between the comparative periods were the decrease in the
   price of oil and gas used to determine the Partnership's reserves for July
   1, 2001 as compared to 2000.





B.  General  Comparison of the Six Month Periods Ended June  30,  2001  and
    2000

The  following  table  provides certain information  regarding  performance
factors for the six month periods ended June 30, 2001 and 2000:

                                                Six Months
                                                  Ended          Percentage
                                                 June 30,         Increase
                                              2001       2000    (Decrease)
                                              ----       ----    ----------
Average price per barrel of oil         $     25.58     27.90      (8%)
Average price per mcf of gas            $      5.23      3.78       38%
Oil production in barrels                     3,360     3,600      (7%)
Gas production in mcf                        33,900    36,400      (7%)
Income from net profits interests       $   168,032   146,758       14%
Partnership distributions               $   150,000   110,000       36%
Limited partner distributions           $   135,000    99,000       36%
Per unit distribution to limited
 partners                               $     27.83     20.41       36%
Number of limited partner units               4,851     4,851

Revenues

The  Partnership's income from net profits interests increased to  $168,032
from   $146,758  for  the  six  months  ended  June  30,  2001  and   2000,
respectively,  an  increase of 14%.  The principal  factors  affecting  the
comparison of the six months ended June 30, 2001 and 2000 are as follows:

1.  The  average  price  for a barrel of oil received  by  the  Partnership
    decreased during the six months ended June 30, 2001 as compared to  the
    six months ended June 30, 2000 by 8%, or $2.32 per barrel, resulting in
    a   decrease  of  approximately  $7,800  in  income  from  net  profits
    interests.  Oil sales represented 33% of total oil and gas sales during
    the  six  months ended June 30, 2001 as compared to 42% during the  six
    months ended June 30, 2000.

    The  average  price  for  an  mcf of gas received  by  the  Partnership
    increased during the same period by 38%, or $1.45 per mcf, resulting in
    an  increase  of  approximately $49,200  in  income  from  net  profits
    interests.

    The  net total increase in income from net profits interests due to the
    change  in prices received from oil and gas production is approximately
    $41,400.   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.


2.  Oil production decreased approximately 240 barrels or 7% during the six
    months ended June 30, 2001 as compared to the six months ended June 30,
    2000,  resulting in a decrease of approximately $6,700 in  income  from
    net profits interests.

    Gas  production decreased approximately 2,500 mcf or 7% during the same
    period, resulting in a decrease of approximately $9,500 in income  from
    net profits interests.

    The  total  decrease in income from net profits interests  due  to  the
    change in production is approximately $16,200.

3.  Lease  operating  costs  and  production  taxes  were  4%  higher,   or
    approximately $4,100 more during the six months ended June 30, 2001  as
    compared to the six months ended June 30, 2000.

Costs and Expenses

Total  costs  and expenses increased to $45,195 from $33,004  for  the  six
months ended June 30, 2001 and 2000, respectively, an increase of 37%.  The
increase  is  the result of higher 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 increased 1%
    or  approximately  $200 during the six months ended June  30,  2001  as
    compared to the six months ended June 30, 2000.

2.    Depletion expense increased to $25,000 for the six months ended  June
   30,  2001 from $13,000 for the same period in 2000.  This represents  an
   increase of 92%.  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 increase in
   depletion expense between the comparative periods were the decrease in the
   price of oil and gas used to determine the Partnership's reserves for July
   1,  2001  as  compared to 2000 and the increase in oil and gas  revenues
   received by the Partnership during 2001 as compared to 2000.





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 $179,100  in
the six months ended June 30, 2001 as compared to approximately $115,500 in
the  six  months ended June 30, 2000. The primary source of the  2001  cash
flow from operating activities was profitable operations.

Cash  flows provided by investing activities were approximately $20,000  in
the  six months ended June 30, 2001. There were no investing activities  in
the  six months ended June 30, 2000.  The principle source of the 2001 cash
flow from investing activities was the sales of oil and gas properties.

Cash flows used in financing activities were approximately $150,000 in  the
six months ended June 30, 2001 as compared to approximately $109,900 in the
six  months  ended June 30, 2000. The only use in financing activities  was
the distributions to partners.

Total distributions during the six months ended June 30, 2001 were $150,000
of  which  $135,000 was distributed to the limited partners and $15,000  to
the general partners.  The per unit distribution to limited partners during
the  six months ended June 30, 2001 was $27.83.  Total distributions during
the  six  months  ended June 30, 2000 were $110,000 of  which  $99,000  was
distributed  to  the limited partners and $11,000 to the general  partners.
The  per unit distribution to limited partners during the six months  ended
June 30, 2000 was $20.41.

The  source  for  the  2001  distributions of  $150,000  was  oil  and  gas
operations  of  approximately  $179,100 and  the  change  in  oil  and  gas
properties  of  approximately  $20,000,  resulting  in  excess   cash   for
contingencies  or  subsequent  distributions.  The  source  for  the   2000
distributions  of  $110,000  was oil and gas  operations  of  approximately
$115,500.

Since  inception of the Partnership, cumulative monthly cash  distributions
of  $1,487,875  have  been made to the partners.   As  of  June  30,  2001,
$1,353,115 or $278.94 per limited partner unit has been distributed to  the
limited partners, representing a 56% return of the capital contributed.

As  of June 30, 2001, the Partnership had approximately $115,400 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.

Item 3.   Quantitative and Qualitative Disclosures About Market Risk

The Partnership is not a party to any derivative
or embedded derivative instruments.



                       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) Reports on Form 8-K:

    No reports on Form 8-
               K were filed during the quarter ended June 30, 2001.


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

Date: August 15, 2001