WESTERN ATLAS INC
10-Q, 1998-05-15
OIL & GAS FIELD EXPLORATION SERVICES
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<PAGE>   1
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 10-Q


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

                  FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1998

                                       OR

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


                         COMMISSION FILE NUMBER 1-12430


                               WESTERN ATLAS INC.

             (Exact name of registrant as specified in its charter)


                 DELAWARE                                  95-3899675
      (State or other jurisdiction of                   (I.R.S. Employer
       incorporation or organization)                  Identification No.)


         10205 WESTHEIMER ROAD
             HOUSTON, TEXAS                                 77042-3115
(Address of principal executive offices)                     (Zip Code)


       Registrant's telephone number, including area code: (713) 972-4000


     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 [ ]

     On April 30, 1998, there were 54,802,834 shares of Common Stock
outstanding.


================================================================================

<PAGE>   2

                               WESTERN ATLAS INC.

                          INDEX TO REPORT ON FORM 10-Q

                      FOR THE QUARTER ENDED MARCH 31, 1998

<TABLE>
<CAPTION>

                                                                                                                     Page
                                                                                                                     ----
<S>                                                                                                                  <C>
PART I.       FINANCIAL INFORMATION

Item 1:       Financial Statements

                Condensed Consolidated Statements of Income
                  Three months ended March 31, 1998 and March 31, 1997......................................          1

                Condensed Consolidated Balance Sheets
                  March 31, 1998 and December 31, 1997......................................................          2

                Condensed Consolidated Statements of Cash Flows
                  Three months ended March 31, 1998 and March 31, 1997......................................          3

                Notes to Condensed Consolidated Financial Statements........................................          4

Item 2:       Management's Discussion and Analysis of Financial
                Condition and Results of Operations.........................................................          7

Item 3:       Quantitative and Qualitative Disclosures About Market Risk....................................         11


PART II.      OTHER INFORMATION

Item 6:       Exhibits and Reports on Form 8-K..............................................................         12


Signatures    ..............................................................................................         16
</TABLE>



<PAGE>   3
                        PART I. FINANCIAL INFORMATION

ITEM 1.    FINANCIAL STATEMENTS


                              WESTERN ATLAS INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                   (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                           THREE MONTHS ENDED
                                                                               MARCH 31,
                                                                      --------------------------
                                                                         1998            1997
                                                                      ----------      ----------
<S>                                                                   <C>             <C>       
Revenue                                                               $  490,745      $  379,946
                                                                      ----------      ----------

Costs and expenses:
    Operating expenses                                                   291,748         245,840
    General and administrative                                            16,960          16,800
    Research and technology                                               14,427          15,235
    Depreciation, depletion, and amortization                            100,620          67,100
                                                                      ----------      ----------
       Total costs and expenses                                          423,755         344,975
                                                                      ----------      ----------
Operating profit                                                          66,990          34,971
                                                                      ----------      ----------

Other income and expenses:
    Interest income                                                          594             506
    Interest expense                                                     (13,382)         (8,669)
                                                                      ----------      ----------
       Total other income and expenses                                   (12,788)         (8,163)
                                                                      ----------      ----------

Earnings from continuing operations before taxes on income                54,202          26,808
Taxes on income                                                          (20,597)        (10,724)
                                                                      ----------      ----------

Earnings from continuing operations                                       33,605          16,084
Discontinued operations -- results of UNOVA, Inc. 
    distributed to shareholders                                               --          14,718
                                                                      ----------      ----------
Net earnings                                                          $   33,605      $   30,802
                                                                      ==========      ==========

Basic net earnings per share:
    Continuing operations                                             $     0.61      $     0.30
    Discontinued operations                                                   --            0.28
                                                                      ----------      ----------
       Total                                                          $     0.61      $     0.58
                                                                      ==========      ==========

Diluted net earnings per share:
    Continuing operations                                             $     0.60      $     0.29
    Discontinued operations                                                   --            0.28
                                                                      ----------      ----------
       Total                                                          $     0.60      $     0.57
                                                                      ==========      ==========

Shares used in computing net earnings per share:
    Basic                                                                 54,689          53,743
    Diluted                                                               56,075          54,734
</TABLE>


     See accompanying notes to condensed consolidated financial statements.

                                       1
<PAGE>   4



                               WESTERN ATLAS INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                      MARCH 31,       DECEMBER 31,
                                                                        1998              1997
                                                                    ------------      ------------
<S>                                                                 <C>               <C>         
ASSETS

Current assets:
     Cash and cash equivalents                                      $     16,464      $     33,504
     Accounts receivable, net                                            450,024           445,420
     Inventories                                                          39,391            39,360
     Deferred tax assets                                                  37,168            34,841
     Other current assets                                                 46,383            39,366
                                                                    ------------      ------------
       Total current assets                                              589,430           592,491
Property, plant, and equipment, net                                      967,650           926,382
Multiclient seismic data and other assets                                510,108           479,654
Goodwill and other intangibles, net                                      327,501           332,180
                                                                    ------------      ------------
Total assets                                                        $  2,394,689      $  2,330,707
                                                                    ============      ============

LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
     Accounts payable and accrued liabilities                       $    330,811      $    260,627
     Payroll and related expenses                                         72,132           111,108
     Notes payable and current portion of long-term debt                  49,838           106,592
                                                                    ------------      ------------
       Total current liabilities                                         452,781           478,327

Long-term debt                                                           701,330           701,530

Deferred revenue and other long-term obligations                         316,207           263,983

Commitments and contingencies

Shareholders' equity:
     Preferred stock                                                          --                --
     Common stock                                                         54,792            54,588
     Additional paid-in capital                                          688,978           685,283
     Retained earnings                                                   184,107           150,502
     Pension liability adjustments                                        (3,506)           (3,506)
                                                                    ------------      ------------
       Total shareholders' equity                                        924,371           886,867
                                                                    ------------      ------------
Total liabilities and shareholders' equity                          $  2,394,689      $  2,330,707
                                                                    ============      ============
</TABLE>



     See accompanying notes to condensed consolidated financial statements.


                                       2
<PAGE>   5


                               WESTERN ATLAS INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                                     THREE MONTHS ENDED
                                                                                          MARCH 31,
                                                                                ------------------------------
                                                                                    1998              1997
                                                                                ------------      ------------
<S>                                                                             <C>               <C>         
Cash flows from operating activities:
     Net earnings from continuing operations                                    $     33,605      $     16,084
     Adjustments to reconcile net earnings from continuing operations
        to net cash provided by operating activities:
          Depreciation, depletion, and amortization                                  100,620            67,100
          Change in accounts receivable                                               (4,604)          (13,592)
          Change in inventories                                                          (31)            3,787
          Change in other current assets                                              (7,017)              824
          Change in accounts payable and accrued liabilities                          70,184            13,228
          Change in payroll and related expenses                                     (38,976)          (31,929)
          Change in deferred revenue                                                  48,205            94,340
          Other operating activities                                                  (1,210)             (249)
                                                                                ------------      ------------
     Total from continuing operations                                                200,776           149,593
     Net cash flow from discontinued operations                                           --            (4,994)
                                                                                ------------      ------------
     Net cash provided by operating activities                                       200,776           144,599
                                                                                ------------      ------------

Cash flows from investing activities:
     Capital expenditures                                                            (86,817)         (128,245)
     Costs of multiclient seismic data acquired                                      (80,259)          (51,109)
     Other investing activities                                                        1,755            (2,049)
                                                                                ------------      ------------
     Total from continuing operations                                               (165,321)         (181,403)
     Net cash flow from discontinued operations                                           --          (272,568)
                                                                                ------------      ------------
     Net cash used in investing activities                                          (165,321)         (453,971)
                                                                                ------------      ------------

Cash flows from financing activities:
     Proceeds from issuance of long-term debt                                             --             2,021
     Repayment of long-term debt                                                     (49,289)             (200)
     Net increase (decrease) in short-term borrowings                                 (7,665)          200,561
     Increase in UNOVA, Inc. receivable                                                   --           (56,915)
     Proceeds from issuance of common stock                                            3,898             1,070
     Other financing activities                                                          561            (2,510)
                                                                                ------------      ------------
     Total from continuing operations                                                (52,495)          144,027
     Net cash flow from discontinued operations                                           --           161,136
                                                                                ------------      ------------
     Net cash provided by (used in) financing activities                             (52,495)          305,163
                                                                                ------------      ------------

Net decrease in cash and cash equivalents                                            (17,040)           (4,209)

Cash and cash equivalents, beginning of period                                        33,504            16,296
                                                                                ------------      ------------

Cash and cash equivalents, end of period                                        $     16,464      $     12,087
                                                                                ============      ============

Supplemental disclosures of cash flow information:
        Cash paid during the period for:
          Interest                                                              $      5,164      $      3,805
          Income taxes                                                          $      8,002      $     20,945
</TABLE>

     See accompanying notes to condensed consolidated financial statements.


                                       3
<PAGE>   6


                               WESTERN ATLAS INC.
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                        THREE MONTHS ENDED MARCH 31, 1998

1.   GENERAL

     The amounts included in this report are unaudited; however, in the opinion
     of the management of Western Atlas Inc. (the "Company"), all adjustments
     necessary for a fair presentation of the Company's consolidated financial
     position as of March 31, 1998 and its results of operations and cash flows
     for the three months ended March 31, 1998 and 1997 are included. Certain
     information and footnote disclosures normally included in financial
     statements prepared in accordance with generally accepted accounting
     principles are condensed or omitted pursuant to the rules and regulations
     of the Securities and Exchange Commission. These condensed consolidated
     financial statements should be read in conjunction with the Company's 1997
     Annual Report on Form 10-K (as amended by Form 10-K/A) prepared in
     accordance with generally accepted accounting principles. The results of
     operations for the three months ended March 31, 1998 are not necessarily
     indicative of the results to be expected for the entire year.

     In June 1997, the Financial Accounting Standards Board ("FASB") issued
     Statement of Financial Accounting Standards ("SFAS") No. 130, "Reporting
     Comprehensive Income," which established standards for reporting and
     display of comprehensive income and its components. Comprehensive income
     includes all changes in equity during a period except those resulting from
     investments by owners and distributions to owners. SFAS No. 130 was adopted
     by the Company in 1998. Comprehensive income as determined under this
     standard was $28.1 million for the three months ended March 31, 1997; there
     was no effect for the three months ended March 31, 1998.

2.   DISCONTINUED OPERATIONS

     On October 31, 1997, the Company distributed all the shares of UNOVA, Inc.
     ("UNOVA"), its then wholly owned industrial automation systems subsidiary,
     as a stock dividend to the Company's shareholders (the "Spin-off"). The
     operations of UNOVA for the three months ended March 31, 1997 are
     classified as discontinued operations in the Company's Condensed
     Consolidated Financial Statements. For periods prior to the Spin-off, total
     cash, debt, and related net interest expense were allocated based on the
     capital needs of the operations. All corporate general and administrative
     costs of the Company are included in continuing operations and no
     allocation was made to UNOVA for any of the periods presented.

     Discontinued operations of UNOVA for the three months ended March 31, 1997
     are as follows (in thousands):

<TABLE>
     <S>                                                              <C>
     Net revenue                                                      $  323,066
     Allocated interest expense                                            3,566
     Allocated interest income                                             1,648

     Income before income taxes                                       $   24,529
     Provision for income taxes                                            9,811
                                                                      ----------
     Total discontinued operations, net of income taxes               $   14,718
                                                                      ==========
</TABLE>




                                       4
<PAGE>   7


3.   EARNINGS PER SHARE

     For the year ended December 31, 1997, the Company adopted Statement of
     Financial Accounting Standards ("SFAS") No. 128, titled "Earnings per
     Share," which simplifies the computation of earnings per share ("EPS") and
     increases comparability to international accounting standards. The effect
     of this accounting change on previously reported EPS data for the three
     months ended March 31, 1997 is as follows:

<TABLE>
<S>                                                                 <C>       
     Primary EPS as originally reported                             $     0.56
     Effect of SFAS No. 128                                               0.02
                                                                    ----------
     Basic EPS as restated                                          $     0.58
                                                                    ==========
                                                                              
     Fully diluted EPS as originally reported                       $     0.56
     Effect of SFAS No. 128                                               0.01
                                                                    ----------
     Diluted EPS as restated                                        $     0.57
                                                                    ==========
</TABLE>

4.   INVENTORY

     Summarized below are the components of inventory balances:

<TABLE>
<CAPTION>
                                                    MARCH 31,    DECEMBER 31,
                                                      1998           1997    
                                                   ----------    ------------
                                                        (in thousands)       

<S>                                                <C>            <C>        
     Raw materials                                 $   19,330     $   19,084 
     Work in progress                                  16,807         16,032 
     Finished goods                                     3,254          4,244 
                                                   ----------     ---------- 
     Total                                         $   39,391     $   39,360 
                                                   ==========     ========== 
</TABLE>

5.   DEBT

     The Company has a short-term commercial paper ("CP") program which allows
     the Company to borrow up to $400 million in aggregate maturity value of
     commercial paper, with maturities up to 270 days. At March 31, 1998, $201.9
     million was borrowed under the CP program at annual interest rates
     approximating 5.69%. In connection with the CP program, the Company agreed
     to maintain committed credit facilities with a group of banks that provide
     for $400 million in long-term committed credit. At March 31, 1998, there
     were no amounts outstanding under the long-term committed credit facility.
     At March 31, 1998, $300 million in commercial paper and short-term
     obligations was reclassified to long-term debt as the Company has the
     ability and intent to refinance such obligations on a long-term basis.



                                       5
<PAGE>   8


6.   SUBSEQUENT EVENTS

     On April 1, 1998, the Company acquired all the outstanding stock of WEDGE
     DIA-LOG, Inc. ("WEDGE") for approximately $218 million in cash (the "WEDGE
     Acquisition"). In connection with the WEDGE Acquisition, the Company repaid
     approximately $33 million of WEDGE's indebtedness. WEDGE specializes in
     cased-hole logging and pipe recovery services.

     In April 1998, the Company acquired 3-D Geophysical, Inc. ("3-D
     Geophysical") for $9.65 cash per share for an aggregate consideration of
     approximately $115 million. 3-D Geophysical is a supplier of primarily
     land-based seismic data acquisition services. In addition, the holders of
     unexercised options to acquire 3-D Geophysical common stock will receive an
     aggregate of approximately $3 million. 3-D Geophysical also had 
     approximately $11 million in outstanding indebtedness which was repaid by
     the Company.

     The purchase method of accounting was used to record both of these
     acquisitions. Unaudited pro forma information related to these acquisitions
     is not included as the impact of these acquisitions is not material.

     On May 10, 1998, Baker Hughes Incorporated ("Baker Hughes") and the Company
     entered into a definitive merger agreement (the "Merger Agreement") which
     provides for the Company to be merged (the "BHI Merger") with a subsidiary
     of Baker Hughes. The Merger Agreement provides that the Company's
     shareholders are to receive 2.4 shares of newly issued Baker Hughes common
     stock for each Western Atlas common share, subject to adjustment. The
     transaction is expected to be accounted for as a pooling of interests and
     is expected to be tax-free to the Company's shareholders. It is anticipated
     that the transaction will be completed by the end of September 1998 and is
     subject to shareholder and regulatory approvals, including expiration of
     the applicable waiting period under the Hart-Scott-Rodino Act, and other
     customary closing conditions.



                                       6
<PAGE>   9

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
RESULTS OF OPERATIONS

Management's discussion and analysis of financial condition and results of
operations should be read in conjunction with Western Atlas Inc.'s (the
"Company") Condensed Consolidated Financial Statements and the related notes
thereto, and the information provided under the caption "Forward-Looking
Statements" set forth below.

OVERVIEW

On October 31, 1997, the Company distributed all the shares of UNOVA, Inc.
("UNOVA"), its then wholly owned industrial automation systems subsidiary, as a
stock dividend to the Company's shareholders (the "Spin-off"). The operations of
UNOVA for the three months ended March 31, 1997 are classified as discontinued
operations in the Company's Condensed Consolidated Financial Statements.
Accordingly, the accounts of these operations for the prior year have been
reclassified as earnings from discontinued operations. See Note 2 of Notes to
Condensed Consolidated Financial Statements.

On April 1, 1998, the Company acquired all the outstanding stock of WEDGE
DIA-LOG, Inc. ("WEDGE") for approximately $218 million in cash (the "WEDGE
Acquisition"). In connection with the WEDGE Acquisition, the Company repaid
approximately $33 million of WEDGE's indebtedness. WEDGE specializes in
cased-hole logging and pipe recovery services.

In April 1998, the Company acquired 3-D Geophysical, Inc. ("3-D Geophysical")
for $9.65 cash per share for an aggregate consideration of approximately $115
million. 3-D Geophysical is a supplier of primarily land-based seismic data
acquisition services. In addition, the holders of unexercised options to acquire
3-D Geophysical common stock will receive an aggregate of approximately $3
million. 3-D Geophysical also had approximately $11 million in outstanding
indebtedness which was repaid by the Company.

The purchase method of accounting was used to record both of these acquisitions.
These two acquisitions are not expected to materially affect the Company's
earnings in 1998, but are expected to be accretive in 1999 and thereafter.

RESULTS OF CONTINUING OPERATIONS

The terms "1Q98" and "1Q97" used herein refer to the three-month periods ended
March 31, 1998 and March 31, 1997, respectively. The Company's continuing
operations discussed herein reflect the Company's ongoing oilfield
service-related businesses only. All references to earnings per share are on a
diluted basis unless otherwise specified.

Net earnings from continuing operations for 1Q98 totaled $33.6 million, or $0.60
per share, an increase of 109% compared to $16.1 million, or $0.29 per share,
for 1Q97.

Total revenue for 1Q98 was $490.7 million, an increase of 29% (approximately
$111 million) over 1Q97. Businesses acquired after the first quarter of 1997
contributed approximately $15.0 million, or 14%, of the revenue improvement.
Approximately 67% of the Company's consolidated revenue was derived from
international activities in 1Q98, compared to 74% in 1Q97. Consolidated
international revenue increased 16% in 1Q98 over 1Q97.

Operating profit from continuing operations for 1Q98 was $67.0 million compared
to $35.0 million for 1Q97, an increase of 92%. Approximately 49% of the
Company's consolidated operating profit was derived from international
activities in 1Q98 compared to 69% in 1Q97.


                                       7
<PAGE>   10

WESTERN GEOPHYSICAL ("WG") - WG's 1Q98 revenue increased 29% and operating
profit increased 82% compared to the prior year period. Seismic operations
benefited from a number of successful multiclient surveys processed and
delivered in the first quarter of 1998 as well as increased demand for
proprietary seismic data acquisition and processing services. In addition,
results were favorably impacted by upgrades to the Company's marine seismic and
ocean-bottom cable fleets and the operation of seven additional data processing
centers in the first quarter of 1998 compared to the prior year period.

WESTERN ATLAS LOGGING SERVICES ("WALS") - WALS' revenue and operating profit for
1Q98 increased 29% and 39%, respectively, over the prior year period.
Acquisitions completed in mid-1997 contributed to the positive results in 1Q98.
Additionally, increased customer demand for WALS' high-end technologies and
pricing improvements in the U.S. market contributed to its improved results.

E&P SERVICES ("E&PS") - E&PS' oil and gas operations realized an operating loss
in 1Q98.

GENERAL AND ADMINISTRATIVE EXPENSE

General and administrative expense decreased as a percent of sales from 4.4% in
1Q97 to 3.5% in 1Q98 due to the increase in sales. Actual expenditures for 
1Q98 were $17.0 million compared to $16.8 million for 1Q97.

RESEARCH AND TECHNOLOGY

Research and technology expense decreased 5% in 1Q98 to $14.4 million compared
to $15.2 million in the comparable prior year period.

DEPRECIATION, DEPLETION, AND AMORTIZATION

Depreciation, depletion, and amortization expense for 1Q98 increased $33.5
million, or 50%, over the same prior year period. Increased capital spending in
1997 raised the depreciable bases for equipment and multiclient seismic data
resulting in higher expense. The impact of a higher depreciable base for
equipment was partially offset by the effect of extending the useful lives of
certain assets in late 1997 to more closely reflect management's current
estimate.

INTEREST EXPENSE

Interest expense in 1Q98 increased $4.7 million from 1Q97 due to higher debt
levels during 1Q98 as compared to 1Q97. The higher debt levels were attributable
primarily to acquisitions made in 1997 by UNOVA prior to the Spin-off.

INCOME TAXES

The effective income tax rate for 1Q98 was 38%, down from 40% in 1Q97 due 
primarily to the effects of the Spin-off.

DISCONTINUED OPERATIONS

Discontinued operations consist of the Company's industrial automation systems
business, UNOVA, for the three months ended March 31, 1997. All corporate
general and administrative costs of the Company are included in continuing
operations and no allocation was made to UNOVA for any of the periods presented.
Interest expense attributable to UNOVA for 1Q97 totaled $3.6 million and was
reclassified to discontinued operations in the Company's Condensed Consolidated
Statements of Operations. Interest income attributable to UNOVA of $1.6 million
for 1Q97 has also been reclassified to discontinued operations. See Note 2 of
Notes to the Condensed Consolidated Financial Statements included herein for
further information.



                                       8
<PAGE>   11

LIQUIDITY, CAPITAL RESOURCES, AND FINANCIAL CONDITION

The Company ended the first quarter of 1998 with cash and cash equivalents of
$16.5 million compared with $33.5 at December 31, 1997. Cash generated from
operations exceeded capital expenditures and multiclient seismic data
acquisition costs by approximately $33.7 million for the three months ended
March 31,1998. In addition, during the quarter the Company made payments on
long-term debt totaling $49.3 million. The Company's ratio of current assets to
current liabilities was 1.3:1 at March 31, 1998, compared to 1.2:1 at December
31, 1997.

Total debt was $751.2 million as of March 31, 1998, compared to $808.1 million
at December 31, 1997. Total debt constituted approximately 45% of total
capitalization at March 31, 1998 compared to 48% at December 31, 1997. As of
March 31, 1998, outstanding borrowings under the Company's commercial paper
("CP") program totaled $201.9 million. In connection with the CP program, the
Company agreed to maintain committed credit facilities with a group of banks
that provide for $400 million in long-term committed credit. At March 31, 1998,
there were no amounts outstanding under the long-term committed credit
facilities. At March 31, 1998, $300 million in commercial paper and short-term
obligations was reclassified as long-term debt as the Company has the ability
and intent to refinance such obligations on a long-term basis.

On March 11, 1998, the Company filed two registration statements with the
Securities and Exchange Commission regarding the proposed underwritten public
offerings of $400 million of Adjustable Conversion-rate Equity Security Units
and $200 million of Senior Notes due 2008. Proceeds from the sale of these
offerings are expected to be used to repay debt incurred to finance the
acquisitions discussed herein and to retire CP and other short-term debt.

During periods of growth, the Company has historically spent substantial funds
for capital expenditures and acquisitions of multiclient seismic data in order
to remain competitive in its businesses. The Company estimates that it will
spend approximately $760 million during 1998 for these purposes. In addition,
the Company's recent acquisitions of WEDGE and 3-D Geophysical along with the
assumption and/or repayment of those entities' respective indebtedness, required
approximately $400 million which the Company has borrowed on a short-term basis
pending the completion of the Units Offering and the Notes Offering. This
short-term debt matures in June 1998 and bears interest at LIBOR plus 20 basis
points (0.2%). The Company believes that its working capital resources, expected
cash flow from operations, existing lines of credit, and the proceeds from the
Units Offering and the Notes Offering (if such offerings are consummated) will
be sufficient to meet the Company's 1998 funding needs. In the event the Units
Offering and the Notes Offering are not consummated, or, if consummated, less
than $600 million is raised therefrom, the Company may be required to obtain
alternative funding from borrowings or the sale of debt or equity securities.
While the Company believes that such sources of capital will continue to be
available, there is no assurance that the Company will be able to continue to
finance its needs on terms it finds acceptable. Also, in the event the Company
borrows additional amounts or issues debt securities, its credit ratings, and
accordingly, its borrowing costs may deteriorate.

In addition to the foregoing, the Company may seek to acquire complementary
businesses as part of its long-term growth strategy. To the extent that the
Company is successful in this regard, there is no assurance that the Company
will be able to finance such activities on terms it finds acceptable, and, to
the extent that the Company issues equity securities in connection with any such
transactions, there is no assurance that the issuance of such securities will
not be dilutive to the holders of the Company's common stock. In the event of a
downturn in industry conditions, the Company may, to the extent advisable, seek
to reduce any or all of the following activities or combinations thereof: (i)
capital expenditures, (ii) acquisitions of multiclient seismic data, and (iii)
business acquisition and/or combination activities. These reductions may
adversely affect the Company's subsequent competitiveness and financial results.
In the event of such a downturn, there is no assurance that the Company will be
able to find adequate sources of funding on terms it finds acceptable.



                                       9
<PAGE>   12

On May 10, 1998, Baker Hughes Incorporated ("Baker Hughes") and the Company
entered into a definitive merger agreement (the "Merger Agreement") which
provides for the Company to be merged (the "BHI Merger") with a subsidiary of
Baker Hughes. The Merger Agreement provides that the Company's shareholders are
to receive 2.4 shares of newly issued Baker Hughes common stock for each
Western Atlas common share, subject to adjustment. The transaction is expected
to be accounted for as a pooling of interests and is expected to be tax-free to
the Company's shareholders. It is anticipated that the transaction will be
completed by the end of September 1998 and is subject to shareholder and
regulatory approvals, including expiration of the applicable waiting period
under the Hart-Scott-Rodino Act, and other customary closing conditions. In
connection with the Merger Agreement, the Company has deferred taking further
actions to effect the Units Offering and the Notes Offering discussed above.
Between the date of this report and the consummation of the BHI Merger, the
Company will continue to utilize CP and short-term bank debt to meet its
funding needs. The Company believes that these sources of funds will be
available during this interim period, however, there is no assurance that such
funding will be available, or, if available, that it will be at reasonable
interest rates.

ACCOUNTING STANDARDS

In June 1997, the Financial Accounting Standards Board ("FASB") issued Statement
of Financial Accounting Standards ("SFAS") No. 130, "Reporting Comprehensive
Income," which established standards for reporting and display of comprehensive
income and its components. Comprehensive income includes all changes in equity
during a period except those resulting from investments by owners and
distributions to owners. SFAS No. 130 was adopted by the Company in 1998.
Comprehensive income as determined under this standard was $28.1 million for the
three months ended March 31, 1997; there was no effect for the three months
ended March 31, 1998.

FORWARD-LOOKING STATEMENTS

The statements in this Quarterly Report on Form 10-Q relating to matters that
are not historical facts, including, but not limited to, statements found under
the captions "Overview," "Results of Continuing Operations," and "Liquidity,
Capital Resources, and Financial Condition" above, are "forward-looking"
statements within the meaning of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended.
These statements include, without limitation, statements concerning the
Company's future revenues, financial position and results of operations and cash
flows, general business and financing strategies, operating trends, industry
trends, expectations for funding capital expenditures and acquisitions of
multiclient seismic data, business acquisitions and/or combination activities,
and operations in future periods. When used in this Quarterly Report, words such
as "anticipate," "believe," "could," "estimate," "expect," "intend," "may,"
"plan," "project," "will," and similar expressions, as they relate to the
Company or its management, identify forward-looking statements. Such
forward-looking statements involve and are dependent upon certain risks and
uncertainties, including but not limited to, the following which are beyond the
Company's control: dependence upon energy industry spending; worldwide prices
and demand for oil and gas; the presence of competitors with greater financial
and other resources; technological changes and developments; operating risks
inherent in the oilfield services industry; regulatory uncertainties; worldwide
political stability and economic conditions; operating risks associated with
international activity; and other factors. The actual results of the future
events described in said forward-looking statements could differ materially from
those expressed or implied in such forward-looking statements because of the
risks and uncertainties described above, elsewhere in this Quarterly Report, the
Company's 1997 Annual Report on Form 10-K (as amended on Form 10-K/A), and other
risks and uncertainties set forth, from time to time, in the Company's other
public reports and public statements. All forward-looking statements in this
Quarterly Report are based on information available to the Company at the date
hereof, and the Company assumes no obligation to update any such forward-looking
statements.




                                       10
<PAGE>   13

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company is exposed to certain market risks, which are inherent in the
Company's financial instruments and arise from transactions entered into in the
normal course of business. The Company may enter into derivative financial
instrument transactions in order to manage or reduce market risk in connection
with specific foreign currency denominated and/or interest rate related
transactions. The Company does not enter into derivative financial instrument
transactions for speculative purposes. A discussion of the Company's primary
market risk disclosure in financial instruments is presented below and should be
read in conjunction with the forward-looking statement included herein and the
1997 Annual Report on Form 10-K (as amended on Form 10-K/A).

LONG-TERM DEBT

The Company is subject to interest rate risk on its long-term fixed-interest
debt. Commercial paper borrowings and borrowings under revolving credit
facilities do not give rise to significant interest rate risk because these
borrowings have short maturities. In general, the fair market value of debt with
fixed interest rates will increase as interest rates fall, and the fair market
value will decrease as interest rates rise. This exposure to interest rate risk
is managed by borrowing money that has a variable interest rate or using
interest rate swaps to change fixed interest rate borrowings to variable
interest rate borrowings. Currently, the Company maintains a variable interest
rate mix between 40% and 50% of total borrowings. At March 31, 1998, the
Company's principal long-term debt obligations, which bear fixed rates of
interest and are denominated in U.S. dollars, are $250 million due in 2004 and
$150 million due in 2024. The weighted-average interest rates by expected
maturity date are 8.03% and 8.62%, respectively, and the aggregate fair value of
such debt is $447.2 million. At March 31, 1998, the Company was not a party to
any interest rate swap agreements.

On April 3, 1998, the Company entered into an interest rate lock agreement with
an investment banking firm having a notional amount of $100 million. This
agreement had a determination date of May 1, 1998 and was intended to limit the
interest rate exposure on a portion of the Company's planned Notes Offering
discussed above. The notional amount of the interest rate agreement is used to
measure interest to be paid or received and does not represent the amount of
exposure to credit loss. On April 28, 1998, the Company anticipated that the
Notes Offering would not be completed prior to the expiration of this agreement,
therefore, the Company settled the agreement and received approximately $2
million. The net cash amount received on the agreement was deferred and will be
recognized as an adjustment to interest expense over the life of the notes
issued pursuant to the Notes Offering.

FOREIGN CURRENCY

The U.S. dollar is the functional currency for substantially all of the
Company's operations. For these operations, all gains and losses from currency
transactions are currently included in income. From time to time, the Company
enters into foreign currency forward contracts to hedge anticipated and
committed foreign currency transactions. Foreign currency gains and losses for
such purchases are deferred as part of the basis of the assets. At March 31,
1998, the Company had foreign currency denominated commitments of $84 million to
purchase two seismic vessels in 1999. As a part of its efforts to minimize risk
associated with foreign currency fluctuations, the Company entered into forward
exchange contracts having an aggregate notional amount of approximately $82
million at March 31, 1998, to hedge these commitments. The counterparties to the
Company's forward contracts consist of major financial institutions. The credit
ratings and concentration of risk of these financial institutions are monitored
on a continuing basis and the Company believes no significant credit risk exists
as of the date of this report.




                                       11
<PAGE>   14

                           PART II. OTHER INFORMATION


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

(a)     Reports on Form 8-K for the quarter ended March 31, 1998 and through
          the date of this report: During the quarter ended March 31, 1998, the
          Company filed a Current Report on Form 8-K dated March 9, 1998 (Items
          5 and 7), which reported the acquisitions of WEDGE DIA-LOG, Inc. and
          3-D Geophysical, Inc.

(b)     See Exhibit Index included herein on page 13.



                                       12
<PAGE>   15

                               WESTERN ATLAS INC.

                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
         EXHIBIT NO.       DESCRIPTION OF EXHIBIT
         -----------       ----------------------
<S>                        <C>
              3.1          Restated Certificate of Incorporation of Western
                           Atlas Inc., filed as Exhibit 3.1 to the Company's
                           Annual Report on Form 10-K for the year ended
                           December 31, 1997, and incorporated herein by
                           reference.

              3.2          By-Laws of Western Atlas Inc., as amended, filed as
                           Exhibit 3.2 to the Company's Annual Report on Form
                           10-K for the year ended December 31, 1997, and
                           incorporated herein by reference.

              4.1          Indenture dated as of May 15, 1994 between Western
                           Atlas Inc. and The Bank of New York, Trustee,
                           providing for the issuance of securities in series,
                           filed as Exhibit 4.4 to the Company's June 30, 1994
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              4.2          Form of 8.55% Debentures due 2024 issued by Western
                           Atlas Inc. under such indenture, filed as Exhibit 4.5
                           to the Company's June 30, 1994 Quarterly Report on
                           Form 10-Q, and incorporated herein by reference.

              4.3          Form of 7-7/8% Notes due 2004 issued by the Western
                           Atlas Inc. under such indenture, filed as Exhibit 4.6
                           to the Company's June 30, 1994 Quarterly Report on
                           Form 10-Q, and incorporated herein by reference.

              4.4          Rights Agreement, dated as of August 17, 1994 between
                           Western Atlas Inc. and Chemical Trust Company of
                           California, as Rights Agent, which includes the form
                           of Certificate of Designations setting forth the
                           terms of the Series A Junior Participating Preferred
                           Stock, par value $1.00 per share, of Western Atlas
                           Inc., as Exhibit A; the form of Right Certificate, as
                           Exhibit B; and the Summary of Rights to Purchase
                           Preferred Shares, as Exhibit C, filed as Exhibit 4 to
                           the Company's August 17, 1994 current report on Form
                           8-K, and incorporated herein by reference.

              4.5          $400,000,000 Amended and Restated Credit Agreement
                           dated as of March 19, 1997, among Western Atlas Inc.,
                           the Banks listed therein, and Morgan Guaranty Trust
                           Company of New York as Agent, and Bank of America
                           National Trust and Savings Association, The Bank of
                           New York, CIBC Inc., The Chase Manhattan Bank, The
                           First National Bank of Chicago, NationsBank of Texas,
                           N.A., and Wells Fargo Bank, N.A. as Co-Agents, filed
                           as Exhibit 4.6 to the Company's March 31, 1997
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              4.6          Amendment No. 1 to the Amended and Restated Credit
                           Agreement dated as of June 30, 1997, among Western
                           Atlas Inc., the Banks listed therein, and Morgan
                           Guaranty Trust Company of New York as Agent, and Bank
                           of America National Trust and Savings Association,
                           The Bank of New York, CIBC Inc., The Chase Manhattan
                           Bank, The First National Bank of Chicago, NationsBank
                           of Texas, N.A., and Wells Fargo Bank, N.A. as
                           Co-Agents, filed as Exhibit 4.7 to the Company's June
                           30, 1997 Quarterly Report on Form 10-Q, and
                           incorporated herein by reference.
</TABLE>


                                       13
<PAGE>   16

<TABLE>
<S>                        <C>
              4.7          Amendment No. 2 to the Amended and Restated Credit
                           Agreement dated as of September 19, 1997, among
                           Western Atlas Inc., the Banks listed therein, and
                           Morgan Guaranty Trust Company of New York as Agent,
                           and Bank of America National Trust and Savings
                           Association, The Bank of New York, CIBC Inc., The
                           Chase Manhattan Bank, The First National Bank of
                           Chicago, NationsBank of Texas, N.A., and Wells Fargo
                           Bank, N.A. as Co-Agents, filed as Exhibit 4.7 to the
                           Company's September 30, 1997 Quarterly Report on Form
                           10-Q, and incorporated herein by reference.

              4.8#         Amendment No. 3 to the Amended and Restated Credit
                           Agreement dated as of April 6, 1998, among Western
                           Atlas Inc., the Banks listed therein, and Morgan
                           Guaranty Trust Company of New York as Agent, and Bank
                           of America National Trust and Savings Association,
                           The Bank of New York, CIBC Inc., The Chase Manhattan
                           Bank, The First National Bank of Chicago, NationsBank
                           of Texas, N.A., and Wells Fargo Bank, N.A. as
                           Co-Agents, filed herewith.

              4.9          Other instruments defining the rights of holders of
                           other long-term debt of the Company are not filed as
                           exhibits because the amount of debt authorized under
                           any such instrument does not exceed 10% of the total
                           assets of the Company and its consolidated
                           subsidiaries. The Company hereby undertakes to
                           furnish a copy of any such instrument to the
                           Commission upon request.

              10.1         Western Tax Agreement dated as of March 17, 1994,
                           between Litton Industries, Inc., and Western Research
                           Holdings, Inc., filed as Exhibit 10.9 to the
                           Company's March 31, 1994 Quarterly Report on Form
                           10-Q, and incorporated herein by reference.

              10.2*        Change of Control Employment Agreement (form) dated
                           as of November 13, 1997, between Western Atlas Inc.,
                           and each of Orval F. Brannan, James E. Brasher,
                           William H. Flores, Thomas B. Hix, Jr., Gary E. Jones,
                           John R. Russell, Damir S. Skerl, and Richard C.
                           White, filed as Exhibit 10.2 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.3*        Western Atlas Inc. Director Stock Option Plan,
                           filed as Exhibit 10.12 to the Company's March 31,
                           1994 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.4*        Western Atlas International, Inc. Benefit
                           Restoration Plan (the "BR Plan") filed as Exhibit 100
                           to Amendment No. 2 to the Company's Registration
                           Statement on Form 10 No. 1-12430 filed with the
                           Commission on October 12, 1993, and incorporated
                           herein by reference.

              10.5*        Amendment No. 1 to the BR Plan dated February 18,
                           1998, filed as Exhibit 10.5 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.6*        Western Atlas Supplemental Retirement Plan, as
                           amended and restated on November 13, 1997 (the "SR
                           Plan"), filed as Exhibit 10.6 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.7*        Amendment No. 1 to the SR Plan dated February 18,
                           1998, filed as Exhibit 10.7 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.8*        Resolutions adopted by Board of Directors of
                           Western Atlas Inc. on March 17, 1994, with respect to
                           Incentive Loan Program and form of promissory note to
                           evidence loans made thereunder, filed as Exhibit
                           10.20 to the Company's March 31, 1994 Quarterly
                           Report on Form 10-Q, and incorporated herein by
                           reference.
</TABLE>


                                       14
<PAGE>   17

<TABLE>
<S>                        <C>
              10.9*        Western Atlas Inc. Deferred Compensation Plan for
                           Directors, filed as Exhibit 10.22 to the Company's
                           1994 Annual Report on Form 10-K, and incorporated
                           herein by reference.

              10.10*       Western Atlas Inc. Individual Performance Award Plan,
                           filed as Exhibit 10.23 to the Company's 1994 Annual
                           Report on Form 10-K, and incorporated herein by
                           reference.

              10.11*       Western Atlas Inc. 1995 Incentive Compensation
                           Plan, filed as Exhibit 10.24 to the Company's 1994
                           Annual Report on Form 10-K, and incorporated herein
                           by reference.

              10.12*       Western Atlas Inc. 1993 Stock Incentive Plan dated
                           as of December 20, 1994, as amended on February 13,
                           1996, filed as Exhibit 10.23 to the Company's 1995
                           Annual Report on Form 10-K, and incorporated herein
                           by reference.

              10.13*       Consulting Agreement dated as of August 1, 1996,
                           between Western Atlas Inc. and Joseph T. Casey
                           ("Casey Consulting Agreement"), filed as Exhibit
                           10.21 to the Company's 1996 Annual Report on Form
                           10-K, and incorporated herein by reference.

              10.14*       Amendment No. 1 to Casey Consulting Agreement dated
                           October 1, 1997, filed as Exhibit 10.14 to the
                           Company's Annual Report on Form 10-K for the year
                           ended December 31, 1997, and incorporated herein by
                           reference.

              10.15        Distribution and Indemnity Agreement dated October
                           31, 1997, between Western Atlas Inc. and UNOVA, Inc.,
                           filed as Exhibit 10.18 to the Company's September 30,
                           1997 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.16        Tax Sharing Agreement dated October 31, 1997, between
                           Western Atlas Inc. and UNOVA, Inc., filed as Exhibit
                           10.19 to the Company's September 30, 1997 Quarterly
                           Report on Form 10-Q, and incorporated herein by
                           reference.

              10.17        Intellectual Property Agreement dated October 31,
                           1997, between Western Atlas Inc. and UNOVA, Inc.,
                           filed as Exhibit 10.20 to the Company's September 30,
                           1997 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.18        Employee Benefits Agreement dated October 31, 1997,
                           between Western Atlas Inc. and UNOVA, Inc., filed as
                           Exhibit 10.21 to the Company's September 30, 1997
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              11#          Statement of Computation of Earnings Per Share.

              27.1#        Financial Data Schedules for the three months ended
                           March 31, 1998 (filed only electronically with the
                           Securities and Exchange Commission).

              27.2#        Restated Financial Data Schedules for 1996 (filed
                           only electronically with the Securities and Exchange
                           Commission).

              27.3#        Restated Financial Data Schedules for 1997 (filed
                           only electronically with the Securities and Exchange
                           Commission).
</TABLE>

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

 #   Filed herewith.
 *   Denotes management contract, compensatory plan or similar arrangements.



                                       15
<PAGE>   18

                                   SIGNATURES

         Pursuant to the requirements of Section 13 or 15(d) 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.

                          WESTERN ATLAS INC.
                          (Registrant)


                          By:            /s/  WILLIAM H. FLORES
                             -------------------------------------------------
                                              William H. Flores
                             Senior Vice President and Chief Financial Officer

May 15, 1998




                                       16
<PAGE>   19

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
         EXHIBIT NO.       DESCRIPTION OF EXHIBIT
         -----------       ----------------------
<S>                        <C>
              3.1          Restated Certificate of Incorporation of Western
                           Atlas Inc., filed as Exhibit 3.1 to the Company's
                           Annual Report on Form 10-K for the year ended
                           December 31, 1997, and incorporated herein by
                           reference.

              3.2          By-Laws of Western Atlas Inc., as amended, filed as
                           Exhibit 3.2 to the Company's Annual Report on Form
                           10-K for the year ended December 31, 1997, and
                           incorporated herein by reference.

              4.1          Indenture dated as of May 15, 1994 between Western
                           Atlas Inc. and The Bank of New York, Trustee,
                           providing for the issuance of securities in series,
                           filed as Exhibit 4.4 to the Company's June 30, 1994
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              4.2          Form of 8.55% Debentures due 2024 issued by Western
                           Atlas Inc. under such indenture, filed as Exhibit 4.5
                           to the Company's June 30, 1994 Quarterly Report on
                           Form 10-Q, and incorporated herein by reference.

              4.3          Form of 7-7/8% Notes due 2004 issued by the Western
                           Atlas Inc. under such indenture, filed as Exhibit 4.6
                           to the Company's June 30, 1994 Quarterly Report on
                           Form 10-Q, and incorporated herein by reference.

              4.4          Rights Agreement, dated as of August 17, 1994 between
                           Western Atlas Inc. and Chemical Trust Company of
                           California, as Rights Agent, which includes the form
                           of Certificate of Designations setting forth the
                           terms of the Series A Junior Participating Preferred
                           Stock, par value $1.00 per share, of Western Atlas
                           Inc., as Exhibit A; the form of Right Certificate, as
                           Exhibit B; and the Summary of Rights to Purchase
                           Preferred Shares, as Exhibit C, filed as Exhibit 4 to
                           the Company's August 17, 1994 current report on Form
                           8-K, and incorporated herein by reference.

              4.5          $400,000,000 Amended and Restated Credit Agreement
                           dated as of March 19, 1997, among Western Atlas Inc.,
                           the Banks listed therein, and Morgan Guaranty Trust
                           Company of New York as Agent, and Bank of America
                           National Trust and Savings Association, The Bank of
                           New York, CIBC Inc., The Chase Manhattan Bank, The
                           First National Bank of Chicago, NationsBank of Texas,
                           N.A., and Wells Fargo Bank, N.A. as Co-Agents, filed
                           as Exhibit 4.6 to the Company's March 31, 1997
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              4.6          Amendment No. 1 to the Amended and Restated Credit
                           Agreement dated as of June 30, 1997, among Western
                           Atlas Inc., the Banks listed therein, and Morgan
                           Guaranty Trust Company of New York as Agent, and Bank
                           of America National Trust and Savings Association,
                           The Bank of New York, CIBC Inc., The Chase Manhattan
                           Bank, The First National Bank of Chicago, NationsBank
                           of Texas, N.A., and Wells Fargo Bank, N.A. as
                           Co-Agents, filed as Exhibit 4.7 to the Company's June
                           30, 1997 Quarterly Report on Form 10-Q, and
                           incorporated herein by reference.
</TABLE>



<PAGE>   20

<TABLE>
<S>                        <C>
              4.7          Amendment No. 2 to the Amended and Restated Credit
                           Agreement dated as of September 19, 1997, among
                           Western Atlas Inc., the Banks listed therein, and
                           Morgan Guaranty Trust Company of New York as Agent,
                           and Bank of America National Trust and Savings
                           Association, The Bank of New York, CIBC Inc., The
                           Chase Manhattan Bank, The First National Bank of
                           Chicago, NationsBank of Texas, N.A., and Wells Fargo
                           Bank, N.A. as Co-Agents, filed as Exhibit 4.7 to the
                           Company's September 30, 1997 Quarterly Report on Form
                           10-Q, and incorporated herein by reference.

              4.8#        Amendment No. 3 to the Amended and Restated Credit
                           Agreement dated as of April 6, 1998, among Western
                           Atlas Inc., the Banks listed therein, and Morgan
                           Guaranty Trust Company of New York as Agent, and Bank
                           of America National Trust and Savings Association,
                           The Bank of New York, CIBC Inc., The Chase Manhattan
                           Bank, The First National Bank of Chicago, NationsBank
                           of Texas, N.A., and Wells Fargo Bank, N.A. as
                           Co-Agents, filed herewith.

              4.9          Other instruments defining the rights of holders of
                           other long-term debt of the Company are not filed as
                           exhibits because the amount of debt authorized under
                           any such instrument does not exceed 10% of the total
                           assets of the Company and its consolidated
                           subsidiaries. The Company hereby undertakes to
                           furnish a copy of any such instrument to the
                           Commission upon request.

              10.1         Western Tax Agreement dated as of March 17, 1994,
                           between Litton Industries, Inc., and Western Research
                           Holdings, Inc., filed as Exhibit 10.9 to the
                           Company's March 31, 1994 Quarterly Report on Form
                           10-Q, and incorporated herein by reference.

              10.2*        Change of Control Employment Agreement (form) dated
                           as of November 13, 1997, between Western Atlas Inc.,
                           and each of Orval F. Brannan, James E. Brasher,
                           William H. Flores, Thomas B. Hix, Jr., Gary E. Jones,
                           John R. Russell, Damir S. Skerl, and Richard C.
                           White, filed as Exhibit 10.2 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.3*        Western Atlas Inc. Director Stock Option Plan,
                           filed as Exhibit 10.12 to the Company's March 31,
                           1994 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.4*        Western Atlas International, Inc. Benefit
                           Restoration Plan (the "BR Plan") filed as Exhibit 100
                           to Amendment No. 2 to the Company's Registration
                           Statement on Form 10 No. 1-12430 filed with the
                           Commission on October 12, 1993, and incorporated
                           herein by reference.

              10.5*        Amendment No. 1 to the BR Plan dated February 18,
                           1998, filed as Exhibit 10.5 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.6*        Western Atlas Supplemental Retirement Plan, as
                           amended and restated on November 13, 1997 (the "SR
                           Plan"), filed as Exhibit 10.6 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.7*        Amendment No. 1 to the SR Plan dated February 18,
                           1998, filed as Exhibit 10.7 to the Company's Annual
                           Report on Form 10-K for the year ended December 31,
                           1997, and incorporated herein by reference.

              10.8*        Resolutions adopted by Board of Directors of
                           Western Atlas Inc. on March 17, 1994, with respect to
                           Incentive Loan Program and form of promissory note to
                           evidence loans made thereunder, filed as Exhibit
                           10.20 to the Company's March 31, 1994 Quarterly
                           Report on Form 10-Q, and incorporated herein by
                           reference.
</TABLE>



<PAGE>   21



<TABLE>
<S>                        <C>
              10.9*        Western Atlas Inc. Deferred Compensation Plan for
                           Directors, filed as Exhibit 10.22 to the Company's
                           1994 Annual Report on Form 10-K, and incorporated
                           herein by reference.

              10.10*       Western Atlas Inc. Individual Performance Award Plan,
                           filed as Exhibit 10.23 to the Company's 1994 Annual
                           Report on Form 10-K, and incorporated herein by
                           reference.

              10.11*       Western Atlas Inc. 1995 Incentive Compensation
                           Plan, filed as Exhibit 10.24 to the Company's 1994
                           Annual Report on Form 10-K, and incorporated herein
                           by reference.

              10.12*       Western Atlas Inc. 1993 Stock Incentive Plan dated
                           as of December 20, 1994, as amended on February 13,
                           1996, filed as Exhibit 10.23 to the Company's 1995
                           Annual Report on Form 10-K, and incorporated herein
                           by reference.

              10.13*       Consulting Agreement dated as of August 1, 1996,
                           between Western Atlas Inc. and Joseph T. Casey
                           ("Casey Consulting Agreement"), filed as Exhibit
                           10.21 to the Company's 1996 Annual Report on Form
                           10-K, and incorporated herein by reference.

              10.14*       Amendment No. 1 to Casey Consulting Agreement dated
                           October 1, 1997, filed as Exhibit 10.14 to the
                           Company's Annual Report on Form 10-K for the year
                           ended December 31, 1997, and incorporated herein by
                           reference.

              10.15        Distribution and Indemnity Agreement dated October
                           31, 1997, between Western Atlas Inc. and UNOVA, Inc.,
                           filed as Exhibit 10.18 to the Company's September 30,
                           1997 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.16        Tax Sharing Agreement dated October 31, 1997, between
                           Western Atlas Inc. and UNOVA, Inc., filed as Exhibit
                           10.19 to the Company's September 30, 1997 Quarterly
                           Report on Form 10-Q, and incorporated herein by
                           reference.

              10.17        Intellectual Property Agreement dated October 31,
                           1997, between Western Atlas Inc. and UNOVA, Inc.,
                           filed as Exhibit 10.20 to the Company's September 30,
                           1997 Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              10.18        Employee Benefits Agreement dated October 31, 1997,
                           between Western Atlas Inc. and UNOVA, Inc., filed as
                           Exhibit 10.21 to the Company's September 30, 1997
                           Quarterly Report on Form 10-Q, and incorporated
                           herein by reference.

              11#          Statement of Computation of Earnings Per Share.

              27.1#        Financial Data Schedules for the three months ended
                           March 31, 1998 (filed only electronically with the
                           Securities and Exchange Commission).

              27.2#        Restated Financial Data Schedules for 1996 (filed
                           only electronically with the Securities and Exchange
                           Commission).

              27.3#        Restated Financial Data Schedules for 1997 (filed
                           only electronically with the Securities and Exchange
                           Commission).
</TABLE>

- ----------------
 #   Filed herewith

 *   Denotes management contract, compensatory plan or similar arrangements.

<PAGE>   1
                                                                 CONFORMED COPY



                       AMENDMENT NO. 3 TO CREDIT AGREEMENT


         AMENDMENT No.3 dated as of April 6, 1998 to the Credit Agreement dated
as of December 23, 1993, as amended and restated as of December 22, 1994 and as
further amended and restated as of March 19, 1997 (as heretofore amended, the
"CREDIT AGREEMENT") among WESTERN ATLAS INC. (the "BORROWER"), the BANKS party
thereto (the "BANKS") and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent
(the "AGENT").

         The parties hereto agree as follows:

         SECTION 1. Defined Terms; References. Unless otherwise specifically
defined herein, each term used herein which is defined in the Credit Agreement
has the meaning assigned to such term in the Credit Agreement. Each reference to
"hereof", "hereunder", "herein" and "hereby" and each other similar reference
and each reference to "this Agreement" and each other similar reference
contained in the Credit Agreement shall, after this Amendment becomes effective,
refer to the Credit Agreement as amended hereby.

         SECTION 2. Amendments. The Credit Agreement is hereby amended as
follows:

          (a) In the definition of "Financing Documents" in Section 1.01, by
deleting the phrase "and the Subsidiary Guarantee Agreement" and by replacing
the comma with the word "and".

           (b) To insert in Section 1.01 a definition of "Foreign Debt" to read
as follows:

                  "Foreign Debt" means Debt incurred by a Subsidiary organized
         under the laws of a jurisdiction outside the United States (or incurred
         through a branch or office outside the United States of a Subsidiary
         organized under the laws of a jurisdiction within the United States)
         which Debt is incurred with a view to obtaining financial or tax
         benefits associated with the foreign operations of such Subsidiary
         (including without limitation currency hedging).


<PAGE>   2
           (c) In the definition of "Material Subsidiary" in Section 1.01, by
deleting the following language "(i) any Guarantor and (ii)" and deleting the
word "other" between the words "any" and "Subsidiary" in the second line
thereof.

           (d) By deleting in its entirety the definition of "Obligors" in
Section 1.01.

           (e) In the first sentence of Section 4.02, by replacing the phrase
"each Obligor" with "the Borrower" and deleting the phrase "to which it is a
party".

           (f) By deleting the second sentence of Section 4.03.

           (g) In Section 4.10, by replacing the phrase "Neither the Borrower
nor any Guarantor is" with "The Borrower is not".

           (h) In Section 4.12, by deleting both instances of the phrase "or any
Guarantor" in the first sentence thereof and by replacing the phrase "any
Obligor" with "the Borrower" in the second sentence thereof.

           (i) Section 5.07 is amended to read as follows:

                  "SECTION 5.07. Limitation on Subsidiary Debt. The aggregate
           outstanding principal amount of Debt of the Subsidiaries of the
           Borrower (exclusive of (i) Debt owing to the Borrower or another
           Subsidiary and (ii) Foreign Debt) shall at no time exceed 15% of
           Consolidated Tangible Net Assets."

           (j) In Section 6.01:

                   (i) by replacing the phrases "any Obligor" and "such Obligor"
           with "the Borrower" in Subsections (c) and (d) thereof;

                  (ii) by deleting in its entirety Subsection (1) and moving the
           word "or" from the end of Subsection (k) to the end of Subsection 
           (j);

                 (iii) by replacing each occurrence of the phrase "any Obligor"
           and the phrase "the Obligors" with "the Borrower" in the proviso at
           the end of Section 6.01.

           (k) In Section 6.02, by replacing the phrase "an Obligor" with "the
Borrower".


                                       2
<PAGE>   3
          (l) In Section 7.04, by replacing the phrase "any Obligor" with "the
Borrower".

          (m) In item (ii) of the second sentence of Section 7.05, by replacing
the phrase "any Obligor" with "the Borrower".

          (n) In the second sentence of Section 9.04, by replacing the phrase
"Each of the Borrower and the Guarantors" with "The Borrower" and deleting the
phrase "or such Guarantor, as the case may be".

          (o) In the second and third sentences of Section 9.08, by replacing
the phrase "Each of the Borrower and the Guarantors" with "The Borrower".

          (p) In Section 9.10, by deleting the phrase "THE GUARANTORS,".

         SECTION 3. Exhibit H; Amended and Restated Subsidiary Guarantee
Agreement. The Amended and Restated Subsidiary Guarantee Agreement dated as of
March 19, 1997 among WESTERN ATLAS INC., the Guarantors referred to therein and
Morgan Guaranty Trust Company of New York, as Agent, is hereby terminated in its
entirety and the Guarantors referred to therein are hereby released from all
obligations thereunder.

         SECTION 4. Representations of Borrower. The Borrower represents and
warrants that (i) the representations and warranties of the Borrower set forth
in Article 4 of the Credit Agreement are true on and as of the date hereof and
(ii) no Default has occurred and is continuing on and as of the date hereof.

         SECTION 5.  Governing Law.  This Amendment shall be governed by and 
construed in accordance with the laws of the State of New York.

         SECTION 6. Counterparts. This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

         SECTION 7. Effectiveness. This Amendment shall become effective as of
the date hereof when the Agent shall have received from each of the Borrower and
the Banks a counterpart hereof duly signed by such party or facsimile or other
written confirmation (in form satisfactory to the Agent) that such party has
signed a counterpart hereof.


                                       3
<PAGE>   4
         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first above written.



                                 WESTERN ATLAS INC.



                                 By:   /s/ F. Albert Moncrieff
                                       ---------------------------------------
                                       Title: Vice President & Treasurer

                                 MORGAN GUARANTY TRUST COMPANY OF NEW YORK



                                 By:   /s/ Kathryn Sayko-Yanes
                                       ---------------------------------------
                                       Title: Vice President

                                 BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                                      ASSOCIATION



                                 By:   /s/ Claire Liu
                                       ---------------------------------------
                                       Title: Managing Director

                                 THE BANK OF NEW YORK



                                 By:   /s/ John Yancey
                                       ---------------------------------------
                                       Title: Vice President


                                       4
<PAGE>   5
                                 CHASE BANK OF TEXAS, NATIONAL ASSOCIATION


                                 By:   /s/ Mona M. Foch
                                       ---------------------------------------
                                       Title: Managing Director


                                 CIBC INC.


                                 By:   /s/ Robin W. Elliott
                                       ---------------------------------------
                                       Title: Authorized Signatory


                                 THE FIRST NATIONAL BANK OF CHICAGO


                                 By:   /s/ Leo Loughead
                                       ---------------------------------------
                                       Title: Assistant Vice President

                                 NATIONSBANK OF TEXAS, N.A.


                                 By:   /s/ Patrick M. Delaney
                                       ---------------------------------------
                                       Title: Senior Vice President


                                 WELLS FARGO BANK (TEXAS), NATIONAL
                                       ASSOCIATION


                                 By:   /s/ J. Alan Alexander Jr.
                                       ---------------------------------------
                                       Title: Vice President



                                       5
<PAGE>   6
                                 DRESDNER BANK A.G., NEW YORK BRANCH AND 
                                        GRAND CAYMAN BRANCH


                                 By:   /s/ Beverly G. Cason
                                       ---------------------------------------
                                       Title: Vice President

                                 By:   /s/ John W. Sweeney
                                       ---------------------------------------
                                       Title: Assistant Vice President


                                 CREDIT SUISSE FIRST BOSTON


                                 By:   /s/ James Moran
                                       ---------------------------------------
                                       Title: Director

                                 By:   /s/ Scott Karro
                                       ---------------------------------------
                                       Title: Associate


                                 THE NORTHERN TRUST COMPANY


                                 By:   /s/ John E. Burda
                                       ---------------------------------------
                                       Title: Second Vice President


                                 MELLON BANK, N.A.

                                 By:   /s/ Lawrence C. Ivey
                                       ---------------------------------------
                                       Title: Vice President


                                       6
<PAGE>   7
                                 TORONTO DOMINION (TEXAS), INC.

                                 By:   /s/ Jimmy Simien
                                       ---------------------------------------
                                       Title: Vice President



                                 MORGAN GUARANTY TRUST COMPANY OF 
                                        NEW YORK, as AGENT

                                 By:   /s/ Kathryn Sayko-Yanes
                                       ---------------------------------------
                                 Title: Vice President



                                       7

<PAGE>   1


                                                                      Exhibit 11

                                 WESTERN ATLAS INC.
                   STATEMENT OF COMPUTATION OF EARNINGS PER SHARE
                      (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                     (UNAUDITED)


<TABLE>
<CAPTION>
                                                        THREE MONTHS ENDED MARCH 31,
                                                       -----------------------------
                                                           1998             1997
                                                       ------------     ------------
<S>                                                    <C>              <C>         
BASIC EARNINGS PER SHARE:

Earnings from continuing operations                    $     33,605     $     16,084
Earnings from discontinued operations                            --           14,718
                                                       ------------     ------------
Net earnings available for common shares               $     33,605     $     30,802
                                                       ============     ============

Earnings per share from continuing operations          $       0.61     $       0.30
Earnings per share from discontinued operations                  --             0.28
                                                       ------------     ------------
Total                                                  $       0.61     $       0.58
                                                       ============     ============

DILUTED EARNINGS PER SHARE:

Earnings from continuing operations                    $     33,605     $     16,084
Earnings from discontinued operations                            --           14,718
                                                       ------------     ------------
Net earnings                                           $     33,605     $     30,802
                                                       ============     ============

Earnings per share from continuing operations          $       0.60     $       0.29
Earnings per share from discontinued operations                  --             0.28
                                                       ------------     ------------
Total                                                  $       0.60     $       0.57
                                                       ============     ============


SHARES USED IN COMPUTATION:

Weighted average common shares outstanding
      (net of treasury shares)                               54,689           53,743
Additional potentially dilutive securities
      (equivalent in common stock)                            1,386              991
                                                       ------------     ------------
Total                                                        56,075           54,734
                                                       ============     ============
</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          16,484
<SECURITIES>                                         0
<RECEIVABLES>                                  450,024
<ALLOWANCES>                                         0
<INVENTORY>                                     39,391
<CURRENT-ASSETS>                               589,430
<PP&E>                                       1,482,483
<DEPRECIATION>                                 514,833
<TOTAL-ASSETS>                               2,394,689
<CURRENT-LIABILITIES>                          452,781
<BONDS>                                        701,330
                                0
                                          0
<COMMON>                                        54,792
<OTHER-SE>                                     688,978
<TOTAL-LIABILITY-AND-EQUITY>                 2,394,689
<SALES>                                              0
<TOTAL-REVENUES>                               490,745
<CGS>                                                0
<TOTAL-COSTS>                                  423,755
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              13,382
<INCOME-PRETAX>                                 54,202
<INCOME-TAX>                                    20,597
<INCOME-CONTINUING>                             33,605
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    33,605
<EPS-PRIMARY>                                     0.61
<EPS-DILUTED>                                     0.60
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               MAR-31-1996             MAR-31-1996             JUN-30-1996             SEP-30-1996
<CASH>                                         165,763                 131,491                  47,424                  51,909
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                  755,507                 594,428                 861,608                 861,632
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                    137,158                 157,397                 162,458                 155,075
<CURRENT-ASSETS>                             1,193,935               1,039,335               1,023,032               1,023,643
<PP&E>                                         824,760               1,363,286               1,397,171               1,421,148
<DEPRECIATION>                                       0                 639,269                 651,264                 655,797
<TOTAL-ASSETS>                               2,782,876               2,483,497               2,516,443               2,576,941
<CURRENT-LIABILITIES>                          726,375                 508,485                 501,366                 570,199
<BONDS>                                        569,977                 568,627                 564,797                 564,716
                                0                       0                       0                       0
                                          0                       0                       0                       0
<COMMON>                                        53,692                  53,369                  53,547                  53,585
<OTHER-SE>                                   1,449,246               1,331,239               1,366,284               1,404,334
<TOTAL-LIABILITY-AND-EQUITY>                 2,782,876               2,483,497               2,516,443               2,576,941
<SALES>                                              0                       0                       0                       0
<TOTAL-REVENUES>                             2,582,790                 549,456               1,175,947               1,848,549
<CGS>                                                0                       0                       0                       0
<TOTAL-COSTS>                                1,788,729                 378,289                 813,040               1,276,084
<OTHER-EXPENSES>                               546,599                 124,597                 256,729                 395,641
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                              43,919                  10,959                  22,330                  32,995
<INCOME-PRETAX>                                209,442                  37,806                  87,538                 148,411
<INCOME-TAX>                                    83,777                  15,122                  35,001                  59,364
<INCOME-CONTINUING>                            125,665                  22,684                  52,537                  89,047
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                   125,665                  22,684                  52,537                  89,047
<EPS-PRIMARY>                                     2.35                    0.43                    0.99                    1.67
<EPS-DILUTED>                                     2.32                    0.42                    0.98                    1.65
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                          15,133                  16,707                  16,195
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  842,793                 344,068                 382,064
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                    184,021                  38,769                  40,074
<CURRENT-ASSETS>                             1,208,147               1,301,666               1,386,566
<PP&E>                                       1,587,258               1,306,633               1,348,541
<DEPRECIATION>                                 660,489                 455,148                 485,763
<TOTAL-ASSETS>                               3,092,821               2,673,506               2,818,192
<CURRENT-LIABILITIES>                        1,045,533                 861,456                 631,034
<BONDS>                                        776,889                 971,067               1,059,571
                                0                       0                       0
                                          0                       0                       0
<COMMON>                                        53,762                  53,892                  54,051
<OTHER-SE>                                   1,475,242               1,319,469               1,366,051
<TOTAL-LIABILITY-AND-EQUITY>                 3,092,821               2,673,506               2,818,192
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                               703,012                 798,451               1,218,665
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                  498,317                 554,188                 826,296
<OTHER-EXPENSES>                               143,277                 170,129                 260,888
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                              12,235                  20,617                  32,848
<INCOME-PRETAX>                                 51,337                  54,507                  99,999
<INCOME-TAX>                                    20,535                  21,803                  40,000
<INCOME-CONTINUING>                             30,802                  32,704                  59,999
<DISCONTINUED>                                       0               (171,880)               (157,750)
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    30,802               (139,176)                (97,751)
<EPS-PRIMARY>                                     0.58                  (2.57)                  (1.80)
<EPS-DILUTED>                                     0.57                  (2.50)                  (1.75)
        

</TABLE>


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