UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D. C. 20549


                                    FORM 10-Q


                Quarterly Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934


                For the quarterly period ended September 30, 2001



                           Commission File No. 2-90417



                           PARKER & PARSLEY 84-A, LTD.
                          -----------------------------
             (Exact name of Registrant as specified in its charter)

                     Texas                                   75-1974814
   -------------------------------------------          ---------------------
        (State or other jurisdiction of                    (I.R.S. Employer
         incorporation or organization)                 Identification Number)

5205 N. O'Connor Blvd., Suite 1400, Irving, Texas               75039
-------------------------------------------------           -------------
             (Address of principal executive offices)         (Zip code)

       Registrant's Telephone Number, including area code : (972) 444-9001


          Not applicable (Former name, former address and former fiscal
                       year, if changed since last report)

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

                                Yes / x / No / /





<PAGE>



                           PARKER & PARSLEY 84-A, LTD.

                                TABLE OF CONTENTS


                                                                       Page
                          Part I. Financial Information

Item 1.     Financial Statements

            Balance Sheets as of September 30, 2001 and
               December 31, 2000.....................................    3

            Statements of Operations for the three and nine
              months ended September 30, 2001 and 2000...............    4

            Statement of Partners' Capital for the nine months
              ended September 30, 2001...............................    5

            Statements of Cash Flows for the nine months ended
              September 30, 2001 and 2000............................    6

            Notes to Financial Statements............................    7

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


                           Part II. Other Information

Item 6.     Exhibits and Reports on Form 8-K.........................   11

            Signatures...............................................   12


                                        2

<PAGE>



                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)

                          Part I. Financial Information

Item 1.      Financial Statements

                                 BALANCE SHEETS
<TABLE>

                                                  September 30,    December 31,
                                                      2001             2000
                                                  ------------     ------------
                                                  (Unaudited)
                 ASSETS
<S>                                               <C>              <C>
Current assets:
   Cash                                           $    360,095     $    179,539
   Accounts receivable - oil and gas sales             204,546          360,844
                                                   -----------      -----------
           Total current assets                        564,641          540,383
                                                   -----------      -----------
Oil and gas properties - at cost, based on the
   successful efforts accounting method             18,268,569       18,260,776
Accumulated depletion                              (16,490,135)     (16,391,831)
                                                   -----------      -----------
           Net oil and gas properties                1,778,434        1,868,945
                                                   -----------      -----------
                                                  $  2,343,075     $  2,409,328
                                                   ===========      ===========
LIABILITIES AND PARTNERS' CAPITAL

Current liabilities:
   Accounts payable - affiliate                   $     85,408     $     36,496

Partners' capital:
   General partners                                    278,461          293,504
   Limited partners (19,435 interests)               1,979,206        2,079,328
                                                   -----------      -----------
                                                     2,257,667        2,372,832
                                                   -----------      -----------
                                                  $  2,343,075     $  2,409,328
                                                   ===========      ===========

</TABLE>


The financial information included as of September 30, 2001 has been prepared by
 the managing general partner without audit by independent public accountants.

  The accompanying notes are an integral part of these financial statements.

                                        3

<PAGE>



                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)

                            STATEMENTS OF OPERATIONS
                                   (Unaudited)


<TABLE>

                                    Three months ended           Nine months ended
                                       September 30,               September 30,
                                  ------------------------    ------------------------
                                     2001          2000          2001          2000
                                  ----------    ----------    ----------    ----------
<S>                               <C>           <C>           <C>           <C>
Revenues:
   Oil and gas                    $  427,567    $  615,825    $1,538,389    $1,698,194
   Interest                            2,725         5,118        10,085        12,110
                                   ---------     ---------     ---------     ---------
                                     430,292       620,943     1,548,474     1,710,304
                                   ---------     ---------     ---------     ---------
Costs and expenses:
   Oil and gas production            306,915       226,699       816,895       691,478
   General and administrative         12,938        21,036        49,698        55,175
   Depletion                          41,094        24,033        98,304        82,846
                                   ---------     ---------     ---------     ---------
                                     360,947       271,768       964,897       829,499
                                   ---------     ---------     ---------     ---------
Net income                        $   69,345    $  349,175    $  583,577    $  880,805
                                   =========     =========     =========     =========
Allocation of net income:
   General partners               $   23,562    $   91,539    $  161,220    $  233,685
                                   =========     =========     =========     =========
   Limited partners               $   45,783    $  257,636    $  422,357    $  647,120
                                   =========     =========     =========     =========
Net income per limited
   partnership interest           $     2.35    $    13.26    $    21.73    $    33.30
                                   =========     =========     =========     =========

</TABLE>


         The financial information included herein has been prepared by
  the managing general partner without audit by independent public accountants.

   The accompanying notes are an integral part of these financial statements.

                                        4

<PAGE>



                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)

                         STATEMENT OF PARTNERS' CAPITAL
                                   (Unaudited)


<TABLE>


                                         General       Limited
                                         partners      partners        Total
                                        ----------    ----------    ----------


<S>                                     <C>           <C>           <C>
Balance at January 1, 2001              $  293,504    $2,079,328    $2,372,832

    Distributions                         (176,263)     (522,479)     (698,742)

    Net income                             161,220       422,357       583,577
                                         ---------     ---------     ---------

Balance at September 30, 2001           $  278,461    $1,979,206    $2,257,667
                                         =========     =========     =========
</TABLE>




         The financial information included herein has been prepared by
  the managing general partner without audit by independent public accountants.

   The accompanying notes are an integral part of these financial statements.

                                        5

<PAGE>



                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)

                            STATEMENTS OF CASH FLOWS
                                   (Unaudited)

<TABLE>

                                                           Nine months ended
                                                              September 30,
                                                        -----------------------
                                                           2001          2000
                                                        ---------     ---------
<S>                                                     <C>           <C>
Cash flows from operating activities:
   Net income                                           $ 583,577     $ 880,805
   Adjustments to reconcile net income to net
      cash provided by operating activities:
         Depletion                                         98,304        82,846
   Changes in assets and liabilities:
         Accounts receivable                              156,298       (76,469)
         Accounts payable                                  48,912        32,531
                                                         --------      --------
           Net cash provided by operating activities      887,091       919,713
                                                         --------      --------
Cash flows used in investing activities:
   Additions to oil and gas properties                     (7,793)      (12,681)

Cash flows used in financing activities:
   Cash distributions to partners                        (698,742)     (830,001)
                                                         --------      --------
Net increase in cash                                      180,556        77,031
Cash at beginning of period                               179,539       117,140
                                                         --------      --------
Cash at end of period                                   $ 360,095     $ 194,171
                                                         ========      ========

</TABLE>

         The financial information included herein has been prepared by
  the managing general partner without audit by independent public accountants.

   The accompanying notes are an integral part of these financial statements.

                                        6

<PAGE>



                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)

                          NOTES TO FINANCIAL STATEMENTS
                               September 30, 2001
                                   (Unaudited)


Note 1.     Organization and nature of operations

Parker &  Parsley  84-A,  Ltd.  (the  "Partnership")  is a  limited  partnership
organized in 1984 under the laws of the State of Texas.

The  Partnership  engages in oil and gas development and production in Texas and
is not involved in any industry segment other than oil and gas.

Note 2.     Basis of presentation

In  the  opinion  of  management,  the  unaudited  financial  statements  of the
Partnership  as of  September  30, 2001 and for the three and nine months  ended
September 30, 2001 and 2000 include all adjustments and accruals consisting only
of  normal  recurring  accrual  adjustments  which  are  necessary  for  a  fair
presentation  of the results for the interim  period.  These interim results are
not necessarily indicative of results for a full year. Certain reclassifications
may have been made to the September 30, 2000 financial  statements to conform to
the September 30, 2001 financial statement presentations.

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.  The financial statements
should  be read in  conjunction  with the  financial  statements  and the  notes
thereto  contained in the  Partnership's  Report on Form 10-K for the year ended
December 31, 2000, as filed with the Securities and Exchange Commission,  a copy
of which is available upon request by writing to Rich Dealy,  Vice President and
Chief Accounting  Officer,  5205 North O'Connor  Boulevard,  Suite 1400, Irving,
Texas 75039-3746.

Note 3.     Proposal to acquire Partnership

On October 22,  2001,  Pioneer  Natural  Resources  Company  ("Pioneer")  mailed
materials to the limited  partners of the Partnership  soliciting their approval
of an agreement and plan of merger among Pioneer, Pioneer Natural Resources USA,
Inc. ("Pioneer USA"), a wholly-owned subsidiary of Pioneer, and the Partnership.
Pioneer has valued the Partnership interest at $5,111,410 of which $3,797,678 is
attributable to the limited partners, excluding Pioneer USA in its capacity as a
general  partner or a limited  partner.  If a majority of the  limited  partners
approve the transaction,  each limited partner will receive their  proportionate
share of the value in the form of Pioneer common stock.

                                        7

<PAGE>




Item 2.     Management's Discussion and Analysis of Financial Condition
              and Results of Operations (1)

Results of Operations

Nine months ended September 30, 2001 compared with nine months ended September
  30, 2000

Revenues:

The Partnership's  oil and gas revenues  decreased 9% to $1,538,389 for the nine
months ended September 30, 2001 as compared to $1,698,194 for the same period in
2000.  The decrease in revenues  resulted from a decline in production and lower
average  prices  received  for oil and natural gas liquids  ("NGLs"),  offset by
higher average prices  received for gas. For the nine months ended September 30,
2001,  38,418 barrels of oil,  18,041 barrels of NGLs and 81,437 mcf of gas were
sold, or 70,032 barrel of oil  equivalents  ("BOEs").  For the nine months ended
September 30, 2000,  39,130  barrels of oil,  25,473 barrels of NGLs and 104,455
mcf of gas were sold, or 82,012 BOEs. Due to the decline  characteristics of the
Partnership's  oil and gas  properties,  management  expects a certain amount of
decline  in  production  in the  future  until  the  Partnership's  economically
recoverable reserves are fully depleted.

The average price received per barrel of oil decreased $1.83, or 6%, from $28.61
for the nine months  ended  September  30, 2000 to $26.78 for the same period in
2001. The average price received per barrel of NGLs decreased  $.80, or 6%, from
$13.67  during the nine months ended  September  30, 2000 to $12.87 for the same
period in 2001.  The average  price  received per mcf of gas  increased 54% from
$2.21  during the nine  months  ended  September  30, 2000 to $3.41 for the same
period in 2001. The market price for oil and gas has been extremely  volatile in
the past  decade  and  management  expects a certain  amount  of  volatility  to
continue in the  foreseeable  future.  The  Partnership  may therefore  sell its
future  oil and gas  production  at  average  prices  lower or higher  than that
received during the nine months ended September 30, 2001.

Costs and Expenses:

Total  costs and  expenses  increased  to  $964,897  for the nine  months  ended
September  30,  2001 as compared  to  $829,499  for the same period in 2000,  an
increase of $135,398,  or 16%.  This increase was due to increases in production
costs and depletion,  offset by a decline in general and administrative expenses
("G&A").

Production  costs were $816,895 for the nine months ended September 30, 2001 and
$691,478 for the same period in 2000 resulting in a $125,417  increase,  or 18%.
This increase was primarily due to additional well maintenance costs incurred to
stimulate well production and higher ad valorem taxes.

G&A's  components are independent  accounting and engineering  fees and managing
general partner personnel and operating costs. During this period, G&A decreased
10% from $55,175 for the nine months ended September 30, 2000 to $49,678 for the
same period in 2001, primarily due to a lower percentage of the managing general

                                        8

<PAGE>



partner's  G&A being  allocated  (limited  to 3% of oil and gas  revenues)  as a
result of decreased oil and gas revenues.

Depletion  was $98,304 for the nine months ended  September 30, 2001 as compared
to $82,846 for the same period in 2000,  representing an increase of $15,458, or
19%. This increase was attributable to a reduction in proved reserves during the
period ended September 30, 2001 due to lower commodity prices as compared to the
same period in 2000,  offset by a decrease in oil  production of 712 barrels for
the nine months ended September 30, 2001 as compared to the same period in 2000.

Three months ended September 30, 2001 compared with three months ended September
  30, 2000

Revenues:

The Partnership's  oil and gas revenues  decreased 31% to $427,567 for the three
months ended  September  30, 2001 as compared to $615,825 for the same period in
2000. The decrease in revenues resulted from lower average prices received and a
decline in  production.  For the three months ended  September 30, 2001,  12,383
barrels of oil, 5,775 barrels of NGLs and 23,873 mcf of gas were sold, or 22,137
BOEs.  For the three months ended  September  30, 2000,  12,371  barrels of oil,
9,166  barrels of NGLs and 36,292 mcf of gas were sold,  or 27,586 BOEs.  Due to
the  decline  characteristics  of the  Partnership's  oil  and  gas  properties,
management expects a certain amount of decline in production in the future until
the Partnership's economically recoverable reserves are fully depleted.

The average  price  received per barrel of oil  decreased  $4.49,  or 15%,  from
$30.74 for the three months ended  September 30, 2000 compared to $26.25 for the
same period in 2001.  The average  price  received per barrel of NGLs  decreased
$4.41,  or 31%, from $14.39 during the three months ended  September 30, 2000 to
$9.98 for the same period in 2001.  The average  price  received  per mcf of gas
decreased  34% from $2.86 during the three months  ended  September  30, 2000 to
$1.88 for the same period in 2001.

Costs and Expenses:

Total costs and  expenses  increased  to  $360,947  for the three  months  ended
September  30,  2001 as compared  to  $271,768  for the same period in 2000,  an
increase of $89,179,  or 33%.  This  increase was due to increases in production
costs and depletion, offset by a decline in G&A.

Production costs were $306,915 for the three months ended September 30, 2001 and
$226,699 for the same period in 2000, resulting in an $80,216 increase, or 35%.
The increase was primarily due to additional well maintenance costs incurred to
stimulate well production and higher ad valorem taxes.

During this period,  G&A  decreased  38% from $21,036 for the three months ended
September  30, 2000 to $12,938 for the same period in 2001,  primarily  due to a
lower percentage of the managing general partner's G&A being allocated  (limited
to 3% of oil and gas revenues) as a result of decreased oil and gas revenues.


                                        9

<PAGE>



Depletion was $41,094 for the three months ended  September 30, 2001 as compared
to $24,033 for the same period in 2000,  an  increase of $17,061,  or 71%.  This
increase was  attributable  to a reduction in proved  reserves during the period
ended  September 30, 2001 as a result of lower  commodity  prices as compared to
the same period in 2000.

Liquidity and Capital Resources

Net Cash Provided by Operating Activities

Net cash  provided by operating  activities  decreased  $32,622  during the nine
months  ended  September  30,  2001  from the same  period  ended in 2000.  This
decrease was due to a decrease in oil and gas sales  receipts of $161,830 and an
increase  in  production  costs of  $125,417,  offset by  reductions  in working
capital of  $249,148  and G&A  expenses of $5,477.  The  decrease in oil and gas
receipts  resulted from  $193,137 from the decline in production  during 2001 as
compared to the same period in 2000 and a decline in the average prices received
for oil and NGLs of $94,366,  offset by an increase in average  prices  received
for gas of  $125,673.  The increase in  production  costs was  primarily  due to
additional  well  maintenance  costs incurred to stimulate  well  production and
higher ad  valorem  taxes.  The  decrease  in G&A was  primarily  due to a lower
percentage of the managing general partner's G&A being allocated  (limited to 3%
of oil and gas revenues) as a result of decreased oil and gas revenues.

Net Cash Used in Investing Activities

The Partnership's  principal  investing  activities during the nine months ended
September 30, 2001 and 2000 included  equipment  upgrades on various oil and gas
properties.

Net Cash Used in Financing Activities

For the nine months ended September 30, 2001, cash distributions to the partners
were  $698,742,  of which $176,263 was  distributed to the general  partners and
$522,479 to the limited partners.  For the same period ended September 30, 2000,
cash  distributions  to the  partners  were  $830,001,  of  which  $210,687  was
distributed to the general partners and $619,314 to the limited partners.

During  2001,  the  Partnership  made  distributions  in  March  and July but no
distributions  were made by the Partnership during September pending the vote of
the proposed merger of the Partnership into Pioneer Natural  Resources USA, Inc.
("Pioneer USA"). For further information, see "Proposal to acquire partnerships"
below.

Proposal to acquire partnerships

On October 22,  2001,  Pioneer  Natural  Resources  Company  ("Pioneer")  mailed
definitive materials (the "proxy  statement/prospectus") to solicit the approval
of limited partners of 46 Parker & Parsley limited  partnerships,  including the
Partnership,  of an agreement and plan of merger among  Pioneer,  Pioneer USA, a
wholly-owned subsidiary of Pioneer, and those limited partnerships.  The special
meetings of the limited partners to consider and vote on the merger proposal are
scheduled  for  December  20,  2001.  The record  date to  identify  the limited
partners who are  entitled to notice of and to vote at the special  meetings was
September 21,  2001.  Each partnership  that approves the agreement and  plan of

                                       10

<PAGE>



merger and the other related  merger  proposals will merge with and into Pioneer
USA.  As a result,  the  partnership  interests  of those  partnerships  will be
converted into the right to receive Pioneer common stock.

The proxy  statement/prospectus  is  non-binding  and is subject to, among other
things,  consideration  of offers from third parties to purchase any partnership
or its assets and the majority approval of the limited partnership  interests in
each partnership.

A copy of the proxy  statement/prospectus  may be obtained  without  charge upon
request from Pioneer Natural Resources Company, 5205 North O'Connor Blvd., Suite
1400, Irving, Texas 75039, Attention: Investor Relations.

The limited partners are urged to read the proxy statement/prospectus of Pioneer
filed with the Securities and Exchange  Commission because it contains important
information about the proposed mergers,  including  information about the direct
and indirect  interests  of Pioneer USA and Pioneer in the mergers.  The limited
partners may also obtain the final proxy statement/prospectus and other relevant
documents  relating to the  proposed  mergers free through the internet web site
that the Securities and Exchange Commission maintains at www.sec.gov.



---------------

(1)  "Item 2.  Management's  Discussion and Analysis of Financial  Condition and
     Results of Operations"  contains  forward  looking  statements that involve
     risks and uncertainties.  Accordingly,  no assurances can be given that the
     actual  events  and  results  will  not be  materially  different  than the
     anticipated results described in the forward looking statements.


                           Part II. Other Information

Item 6.     Exhibits and Reports on Form 8-K

(a)    Exhibits

(b)    Reports on Form 8-K - none


                                       11

<PAGE>


                           PARKER & PARSLEY 84-A, LTD.
                          (A Texas Limited Partnership)



                               S I G N A T U R E S



       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.


                                           PARKER & PARSLEY 84-A, LTD.

                                   By:     Pioneer Natural Resources USA, Inc.,
                                            Managing General Partner




Dated:  November 8, 2001           By:     /s/ Rich Dealy
                                           -----------------------------------
                                           Rich Dealy, Vice President and
                                             Chief Accounting Officer



                                       12

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