<PAGE>   1
                       Securities and Exchange Commission

                             Washington, D.C. 20549

                                 FORM 10-QSB/A-1

[X]  QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
     OF 1934

                   For the quarterly period ended May 31, 1999

[  ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT

                  For the transition period from _____ to _____

                         Commission file number 0-24819

                         AMERICAN ENERGY SERVICES, INC.

          Texas                                          76-0279288
-------------------------------               --------------------------------
(State or other jurisdiction of               (IRS Employer Identification No.)
incorporation or organization)

                        7224 Lawndale, Houston, TX 77012
                        --------------------------------
                    (Address of principal executive offices)

                                  713-928-5311
                                  ------------
                           (Issuer's telephone number)

         Check whether the issuer (1) filed all reports required to be filed by
Section 13 or 15(d) of the Exchange Act during the past 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 [ ]

         As of July 14, 1999, there were 6,198,966 shares of Common Stock
outstanding.



<PAGE>   2
                         PART I. FINANCIAL INFORMATION


ITEM 1.    FINANCIAL STATEMENTS

                         AMERICAN ENERGY SERVICES, INC.
                                 BALANCE SHEETS
                                  (UNAUDITED)

                                     ASSETS

<TABLE>
<CAPTION>
                                                               May 31,     February 28,
                                                                1999          1999
                                                            -----------   -----------
<S>                                                         <C>           <C>
Current Assets:
           Cash and cash equivalents                        $    (8,157)  $   353,510
           Certificates of deposit                               11,223        11,223
           Accounts receivable - trade, net of $0 reserves    1,203,580       153,191
           Accounts receivable - other                           76,706        68,767
           Income tax receivable                                147,543       147,543
           Prepaids and other                                   103,834       103,834
           Costs in excess of billings on uncompleted
                   contracts                                  3,883,689     4,056,295
           Inventories                                        1,637,145     1,337,095
                                                            -----------   -----------

                   Total Current Assets                       7,055,563     6,231,458

Property, Plant and Equipment:
           Machinery and equipment                            1,307,682     1,307,682
           Furniture and fixtures                               327,541       327,541
           Vehicles                                              81,553        81,553
           Buildings and Improvements                           221,241       221,241
           Land                                                  76,894        76,894
                                                            -----------   -----------
                                                              2,014,911     2,014,911
Less: accumulated depreciation                                 (771,690)     (749,677)
                                                            -----------   -----------
                                                              1,243,221     1,265,234

Trademarks, patents, and drawings                             1,050,128       992,086
Less: accumulated amortization                                 (270,712)     (254,721)
                                                            -----------   -----------
                                                                779,416       737,365

Deferred tax asset                                              473,371       473,371

Other assets                                                    147,029       147,029
                                                            -----------   -----------

           Total Assets                                     $ 9,698,600   $ 8,854,457
                                                            ===========   ===========
</TABLE>


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



                                       2
<PAGE>   3

                         AMERICAN ENERGY SERVICES, INC.
                           BALANCE SHEETS (CONTINUED)
                                   (UNAUDITED)

                      LIABILITIES AND STOCKHOLDERS' EQUITY

<TABLE>
<CAPTION>
                                                                          May 31,      February 28,
                                                                            1999          1999
                                                                        ------------  ------------
<S>                                                                     <C>           <C>
Current Liabilities:
           Notes Payable                                                $  2,352,526  $  2,393,763
           Current portion of long-term obligations                          168,313       168,313
           Current portion of capital leases                                  53,723        53,723
           Accounts payable and accrued expenses                           4,136,393     4,330,462
           Billings in excess of costs on uncompleted
                   contracts                                               1,276,066       145,153
                                                                        ------------  ------------

                   Total Current Liabilities                               7,987,021     7,091,414

Long-term obligation, net of current portion                               1,124,727     1,153,374
Capital leases, net of current portion                                        64,894        78,325
                                                                        ------------  ------------

                   Total Liabilities                                       9,176,642     8,323,113

Stockholders' Equity:
           Capital stock - no par value, 10,000,000 shares
                   authorized; 6,198,966 shares issued and outstanding       218,583       218,583
           Retained earnings                                                 303,375       312,761
                                                                        ------------  ------------

                   Total Stockholders' Equity                                521,958       531,344
                                                                        ------------  ------------

                   Total Liabilities and Stockholders' Equity           $  9,698,600  $  8,854,457
                                                                        ============  ============
</TABLE>


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



                                       3
<PAGE>   4
                         AMERICAN ENERGY SERVICES, INC.
                             STATEMENT OF OPERATIONS
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                  Three Months Ended
                                                        May 31,
                                             -----------------------------
                                                 1999            1998
                                             -------------   -------------
<S>                                          <C>             <C>
Net Sales                                    $   1,403,120   $   2,404,918

Cost of sales                                    1,051,502       1,759,825
                                             -------------   -------------

           Gross profit                            351,618         645,093

Operating expenses                                 246,486         407,203
                                             -------------   -------------

           Income (loss) from operations           105,132         237,890

Other expenses (income):
           Interest, net                           116,501         100,475
           Other, net                               (1,983)         (1,174)
                                             -------------   -------------

                                                   114,518          99,301
                                             -------------   -------------

           Net income (loss) before taxes           (9,386)        138,589

Income tax (expense) benefit                             0         (45,750)
                                             -------------   -------------

           Net income (loss)                 $      (9,386)  $      92,839
                                             =============   =============

Basic and diluted income (loss) per share    $       (0.00)  $        0.01
                                             =============   =============

Basic weighted average shares outstanding        6,198,966       6,198,966
                                             =============   =============

Diluted weighted average shares outstanding      6,508,914       6,508,914
                                             =============   =============
</TABLE>


                         AMERICAN ENERGY SERVICES, INC.
                        STATEMENT OF COMPREHENSIVE INCOME

<TABLE>
<CAPTION>
                                       Three Months Ended
                                            May 31,
                                   -------------------------
                                      1999          1998
                                   -----------   -----------
<S>                                <C>           <C>
Net income (loss)                  $    (9,386)  $    92,839
Other comprehensive income (loss)         --            --
                                   -----------   -----------
Comprehensive income (loss)        $    (9,386)  $    92,839
                                   ===========   ===========
</TABLE>

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


                                       4
<PAGE>   5
                         AMERICAN ENERGY SERVICES, INC.
                             STATEMENT OF CASH FLOWS
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                                    Three Months Ended
                                                                                          May 31,
                                                                               -----------------------------
                                                                                   1999            1998
                                                                               -------------   -------------
<S>                                                                            <C>             <C>
Cash Flows from Operating Activities:
           Net income (loss)                                                   $      (9,386)  $      91,022
           Adjustments to reconcile net income (loss) to cash provided
           (used) by operating activities:
                   Depreciation and amortization                                      38,004          49,041
           Changes in operating assets and liabilities:
                   Decrease (increase) in accounts receivable                     (1,058,328)        332,427
                   (Increase) decrease in costs in excess of billings on
                        uncompleted contracts                                        172,606        (965,688)
                   (Increase) in inventories                                        (300,050)       (115,181)
                   (Increase) in prepaids and other                                     --            (9,720)
                   Decrease in deferred tax asset                                       --            45,750
                   (Decrease) increase in accounts payable                          (194,369)        272,548
                   Increase in other liabilities                                         300            --
                   Increase in billings in excess of cost on uncompleted
                        contracts                                                  1,130,913         508,008
                                                                               -------------   -------------
                             Net Cash Provided (Used) by Operating Activities       (220,310)        208,207

Cash Flows from Investing Activities:
           (Purchase) of property, plant and equipment                                  --            (5,241)
           (Purchase) of trademarks, patents and drawings                            (58,042)         (6,381)
           (Purchase) of certificates of deposit                                        --           (15,000)
                                                                               -------------   -------------
                             Net Cash Provided (Used) in Investing Activities        (58,042)        (26,622)

Cash Flows from Financing Activities:
           Net (payments) on lines of credit                                         (41,237)       (173,062)
           Net (payments) on long-term obligations                                   (42,078)        (20,400)
                                                                                               -------------
                                                                                               -------------
                             Net Cash (Used) Provided by Financing Activities        (83,315)       (193,462)

Net (decrease) increase in cash and cash equivalents                                (361,667)        (11,877)

Cash and cash equivalents at beginning of period                                     353,510          13,786
                                                                               -------------   -------------

Cash and cash equivalents at end of period                                     $      (8,157)  $       1,909
                                                                               =============   =============
</TABLE>


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


                                       5
<PAGE>   6
                            AMERICAN ENERGY SERVICES

                          NOTES TO FINANCIAL STATEMENTS


NOTE 1 - GENERAL

         The foregoing financial statements have been prepared from the books
and records of American Energy Services, Inc. ("AES" or the "Company") without
audit. In the opinion of management all adjustments, consisting only of normal
recurring adjustments necessary for a fair statement of results for the interim
periods presented, are reflected in the financial statements.

         These statements should be read in conjunction with the financial
statements and related notes included in the Company's Annual Report of Form
10-KSB for the fiscal year ended February 28, 1999.

NOTE 2 - Revenue Recognition


         Revenues are recorded when flow control valves sold are shipped or when
title passes. Title passes from seller to buyer when the goods are shipped. In
some instances, the buyer will pay in advance for completed goods just prior to
shipment. In most instances, sales involve a system of valves for a single
installation and require long-term contracts. When jobs on a long-term contract
progress to a point where final results can be estimated with reasonable
accuracy, the percentage-of-completion method is utilized. Based on the ratio of
costs incurred to date to the total estimated costs of the contracts, a portion
of the total contract price is accrued as revenue. If any losses on a
contract-in-progress become apparent, that loss is charged against the job in
the period it was recognized.


NOTE 3 - Income Taxes

         A pre-tax income or loss results in an income tax expense or benefit,
respectively. With pre-tax income, the tax expense is easily calculated and
accrued at the standard corporate rate. The income tax benefit on a pre-tax
loss, however, is much more difficult to estimate and accrue, and therefore
could be significantly different than the true tax benefit. With the pre-tax
loss incurred in the first fiscal quarter, it is the opinion of management that
the most conservative approach would be to defer accruing any income tax
benefit.

NOTE 4 - EARNINGS (LOSS) PER SHARE


Basic earnings per share is calculated by dividing net income by the weighted
average number of common shares outstanding. Diluted earnings per share is
computed similarly, but also provides the effect to the impact of convertible
securities, such as common stock warrants, if dilutive, would have on net income
and average common shares outstanding if converted.

For the three month periods ending May 31, 1999 and May 31, 1998, average shares
outstanding were increased for stock warrants assumed exercised by 309,948 to
arrive at weighted average shares outstanding for purposes of calculating
diluted earnings per share.





                                       6
<PAGE>   7
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

                           FORWARD-LOOKING STATEMENTS

         This material contains "forward-looking" statements as defined in the
Securities and Exchange Acts of 1933 and 1934 that could involve substantial
risk and uncertainties. When expressions include words such as "anticipate",
"believe", "estimate", "intend", "expect", "plan", and when similar expressions
are used, they are intended to identify the statements as forward-looking.
American Energy Services, Inc. ("AES" or the "Company") relies on a variety of
internal and external information to develop such statements. Due to the
inherent risks and limitations in that development process and the relatively
volatile nature of the industry in which the Company operates, actual results,
performance and achievements may differ materially from results suggested by
these forward-looking statements.

                              RESULTS OF OPERATIONS

Quarter Ended May 31, 1999 versus Quarter Ended May 31, 1998

         Revenues for the three months ended May 31, 1999 were $1,403,000
compared to $2,405,000 for the same period in 1998. The decline in revenues can
be attributed to the focus on percentage-of-completion ("POC") billing for the
year ended February 28, 1999, hindering the billing of POC jobs in the first
quarter.

         Although cost of sales was down $708,000, the gross margin for the
quarter ended May 31, 1999 was down $293,000 versus the quarter ended May 31,
1998. This was largely due to the aforementioned focus on the end of the fiscal
year billing of POC jobs for the most recent year-end.

         Operating expenses decreased $160,717 to $246,000 in the current period
due to the Company's continuous and concerted efforts to reduce overhead.

         Interest and other expenses for the three months ended May 31, 1999
increased $15,000 compared to the same period of last year.

                         LIQUIDITY AND CAPITAL RESOURCES

         The primary sources of the Company's liquidity for the three months
ended May 31, 1999 were cash available at the beginning of the year coupled with
the net costs and billings on uncompleted contracts. These funds were used for
the reduction of short-term and long-term debt, and can also be attributed to
increased trade accounts receivable and inventories.

         During the quarter ended May 31, 1999, the working capital deficit
increased $101,000 when compared to the deficit at February 28, 1999 of
$860,000. The short-term cash flows have been inadequate to overcome the working
capital deficit, thus hindering AES' ability to take advantage of slightly
improved economic conditions as well as it's ability to move forward more
aggressively with the Company's strategic plans. However, the Company has
successfully negotiated advance payments from many customers and has pledged
against letters of credit established by customers. Further, AES is aggressively
pursuing alternative sources of capital to overcome the working capital deficit.
These alternatives may include debt restructuring, debt and equity offerings,
borrowings guaranteed by the EX-IM Bank for export sales, or cash flow
reengineering. Because of the aggressive pursuit of such alternatives, the
Company anticipates improvement in its financial position. However, there is no
guarantee that such improvements will occur, nor that such capital will be
available when it is required or on terms that are acceptable to the Company.

         There were no capital expenditures during the quarter ended May 31,
1999, nor are any planned or expected in the near term. Only upon a very
significant improvement in the Company's financial position, will capital
expenditures be considered, and then only after diligent consideration and
within stringent guidelines.




                                       7
<PAGE>   8
                                    YEAR 2000

         The year 2000 ("Y2K") issue is the inability of computer systems to
recognize the change in year from 1999 to 2000. The issue affects both
information technology ("IT") and non-IT systems. Because non-IT systems are
typically embedded technology, these are more difficult to assess than IT
systems and often require replacement rather than repair.

         AES has recognized the significant uncertainty associated with the Y2K
issue and has tested its products for compliance. It is the Company's belief
that substantially all necessary modifications have been made to its products.

         However, the Company is still in the process of reviewing its internal
computer systems. An outside vendor has been contracted to assess the Company's
internal hardware and software with regard to Y2K compliance. No "mission
critical" systems have required significant modification or replacement to date.

         AES is also in the process of identifying and communicating with its
suppliers and vendors where failure by such third parties to achieve Y2K
compliance could have a material impact on the Company. For those suppliers or
vendors who may pose a material risk, contingency plans are in development.

         The Company has not incurred any material expense to day with regard to
the Y2K issue, nor does it expect any future expense related to the issue to be
material. Any costs associated with the issue will be treated as period costs
and expensed as incurred. There can be no assurance, however, that the Y2K issue
will not present problems unforeseen at this time.





                                       8
<PAGE>   9
                          P A R T II. OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

         The Company is subject to legal proceedings and claims that arise in
the ordinary course of business. In the opinion of management, the amount of
ultimate liability with respect to these actions will not have a materially
adverse affect on the Company's results of operations or financial position.

ITEM 5.  EXHIBITS AND REPORTS ON FORM 8-K

a)       Exhibits

         27 --  Financial Data Schedule

b)       Reports of Form 8-K

         None





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