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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A


     
(Mark One)    
x   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
     
For the quarterly period ended September 30, 2002
 
OR
o   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
     
    For the transition period from                      to                     

Commission File Number 001-14273

CORE LABORATORIES N.V.

(Exact name of registrant as specified in its charter)
     
The Netherlands
(State of other jurisdiction of
incorporation or organization)
  Not Applicable
(I.R.S. Employer Identification No.)
     
Herengracht 424
1017 BZ Amsterdam
The Netherlands

(Address of principal executive offices)
  Not Applicable
(Zip Code)

Registrant’s telephone number, including area code: (31-20) 420-3191

     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 o

     The number of common shares of the Registrant, par value EUR 0.01 per share, outstanding at November 11, 2002 was 33,273,821.



 


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CONSOLIDATED BALANCE SHEETS
CONSOLIDATED STATEMENTS OF OPERATIONS
CONSOLIDATED STATEMENTS OF OPERATIONS
CONSOLIDATED STATEMENTS OF CASH FLOWS
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
QUANTITATIVE AND QUALITATIVE DISCLOSURES OF MARKET RISK
CONTROLS AND PROCEDURES
PART II — OTHER INFORMATION
Item 1. Legal Proceedings.
Item 2. Changes in Securities.
Item 3. Defaults Upon Senior Securities.
Item 4. Submission of Matters to a Vote of Security Holders.
Item 5. Other Information.
Item 6. Exhibits and Reports on Form 8-K.
SIGNATURE
Certification


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CORE LABORATORIES N.V.
FORM 10-Q/A FOR THE QUARTER ENDED SEPTEMBER 30, 2002

INDEX

             
        Page
       
Part I — Financial Information
       
 
Item 1 — Financial Statements
       
   
Consolidated Balance Sheets at September 30, 2002 and December 31, 2001
    1  
   
Consolidated Statements of Operations for the Three Months Ended September 30, 2002 and 2001
    2  
   
Consolidated Statements of Operations for the Nine Months Ended September 30, 2002 and 2001
    3  
   
Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2002 and 2001
    4  
   
Notes to Consolidated Financial Statements
    5  
 
Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations
    12  
 
Item 3 — Quantitative & Qualitative Disclosures of Market Risk
    18  
 
Item 4 — Controls and Procedures
    19  
Part II — Other Information
       
 
Item 1 — Legal Proceedings
    20  
 
Item 2 — Changes in Securities
    20  
 
Item 3 — Defaults Upon Senior Securities
    20  
 
Item 4 — Submission of Matters to a Vote of Security Holders
    20  
 
Item 5 — Other Information
    20  
 
Item 6 — Exhibits and Reports on Form 8-K
    20  
Signature
    21  

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EXPLANATORY NOTE

     Core Laboratories N.V. (“Core Laboratories”, “we”, “our” or “us”) is filing this amendment to its Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 to reflect the restatement of certain previously reported information. Portions of Part I, Item 1 “Financial Statements” and Part I, Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” have been amended to reflect this restatement. The remaining information in this amended Form 10-Q has not been updated to reflect any changes in information that may have occurred subsequent to the date of the reporting period to which this Form 10-Q relates. Additional information relating to the restatement is contained in Note 10 of the Notes to the Consolidated Financial Statements.

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CORE LABORATORIES N.V.
CONSOLIDATED BALANCE SHEETS
(in thousands, except share and per share data)

                         
            September 30,   December 31,
            2002   2001
           
 
            (Unaudited)
            (Restated)        
            Note 10        
ASSETS
               
CURRENT ASSETS:
               
 
Cash and cash equivalents
  $ 14,100     $ 14,456  
 
Accounts receivable, less allowance for doubtful accounts of $10,389 and $7,829 in 2002 and 2001, respectively
    86,400       104,933  
 
Inventories
    37,692       41,109  
 
Prepaid expenses and other current assets
    13,088       9,728  
 
Deferred tax asset
    9,597       9,123  
 
   
     
 
       
Total current assets
    160,877       179,349  
PROPERTY, PLANT AND EQUIPMENT, net
    96,022       97,615  
INTANGIBLES, GOODWILL AND OTHER LONG-TERM ASSETS, net
    150,147       162,536  
 
   
     
 
       
Total assets
  $ 407,046     $ 439,500  
 
   
     
 
LIABILITIES AND SHAREHOLDERS’ EQUITY
               
CURRENT LIABILITIES:
               
 
Current maturities of long-term debt
  $ 823     $ 454  
 
Accounts payable
    15,821       19,721  
 
Other accrued expenses
    15,708       19,832  
 
   
     
 
       
Total current liabilities
    32,352       40,007  
LONG-TERM DEBT
    88,000       95,089  
OTHER LONG-TERM LIABILITIES
    21,945       27,983  
MINORITY INTEREST
    611       815  
SHAREHOLDERS’ EQUITY:
               
 
Preference shares, EUR 0.01 par value; 3,000,000 shares authorized, no shares issued or outstanding
           
 
Common shares, EUR 0.01 par value; 100,000,000 shares authorized, 33,273,821 and 33,204,571 issued and outstanding in 2002 and 2001, respectively
    546       546  
 
Additional paid-in capital
    187,349       186,751  
 
Retained earnings
    76,243       88,309  
 
   
     
 
     
Total shareholders’ equity
    264,138       275,606  
 
   
     
 
       
Total liabilities and shareholders’ equity
  $ 407,046     $ 439,500  
 
   
     
 

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

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CORE LABORATORIES N.V.
CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)

                     
        Three Months Ended
        September 30,
       
        2002   2001
       
 
        (Unaudited)
        (Restated)
Note 10
       
SERVICES
  $ 77,575     $ 77,321  
SALES
    14,857       19,776  
 
   
     
 
 
    92,432       97,097  
OPERATING EXPENSES:
               
 
Cost of services
    61,579       57,107  
 
Cost of sales
    13,290       15,337  
 
General and administrative expenses
    4,943       4,259  
 
Depreciation and amortization
    5,237       4,808  
 
Goodwill amortization
          1,062  
 
Other, net
    125     (55 )
 
   
     
 
 
    85,174       82,518  
INCOME FROM OPERATIONS
    7,258       14,579  
INTEREST EXPENSE
    1,857       2,000  
 
   
     
 
INCOME BEFORE INCOME TAX EXPENSE
    5,401       12,579  
INCOME TAX EXPENSE
    2,269       3,522  
 
   
     
 
NET INCOME
  $ 3,132     $ 9,057  
 
   
     
 
PER SHARE INFORMATION:
               
   
BASIC EARNINGS PER SHARE
  $ 0.09     $ 0.27  
 
   
     
 
   
WEIGHTED AVERAGE BASIC COMMON SHARES OUTSTANDING
    33,266       33,165  
 
   
     
 
   
DILUTED EARNINGS PER SHARE
  $ 0.09     $ 0.27  
 
   
     
 
   
WEIGHTED AVERAGE DILUTED COMMON SHARES OUTSTANDING
    33,465       33,796  
 
   
     
 

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

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CORE LABORATORIES N.V.
CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)

                   
      Nine Months Ended
      September 30,
     
      2002   2001
     
 
      (Unaudited)
      (Restated)        
      Note 10        
SERVICES
  $ 219,444     $ 224,956  
SALES
    43,722       54,747  
 
   
     
 
 
    263,166       279,703  
OPERATING EXPENSES:
               
 
Cost of services
    177,692       170,413  
 
Cost of sales
    39,767       43,429  
 
General and administrative expenses
    14,777       11,803  
 
Depreciation and amortization
    15,169       13,761  
 
Goodwill amortization
          3,128  
 
Other, net
    2,025       (637 )
 
   
     
 
 
    249,430       241,897  
INCOME FROM OPERATIONS
    13,736       37,806  
INTEREST EXPENSE
    5,760       5,921  
 
   
     
 
INCOME BEFORE INCOME TAX EXPENSE AND CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
    7,976       31,885  
INCOME TAX EXPENSE
    3,350       8,928  
 
   
     
 
INCOME BEFORE CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
    4,626       22,957  
CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
    (16,692 )      
 
   
     
 
NET (LOSS) INCOME
  $ (12,066 )   $ 22,957  
 
   
     
 
PER SHARE INFORMATION:
               
 
BASIC EARNINGS PER SHARE BEFORE CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
  $ 0.14     $ 0.69  
 
   
     
 
 
CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
    (0.50 )      
 
   
     
 
 
BASIC (LOSS) EARNINGS PER SHARE
  $ (0.36 )   $ 0.69  
 
   
     
 
 
WEIGHTED AVERAGE BASIC COMMON SHARES OUTSTANDING
    33,241       33,033  
 
   
     
 
 
DILUTED EARNINGS PER SHARE BEFORE CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
  $ 0.14     $ 0.68  
 
   
     
 
 
CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE
    (0.50 )      
 
   
     
 
 
DILUTED (LOSS) EARNINGS PER SHARE
  $ (0.36 )   $ 0.68  
 
   
     
 
 
WEIGHTED AVERAGE DILUTED COMMON SHARES OUTSTANDING
    33,241       34,006  
 
   
     
 

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

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CORE LABORATORIES N.V.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

                       
          Nine Months Ended
          September 30,
         
          2002   2001
         
 
          (Unaudited)
          (Restated)        
          Note 10        
CASH FLOWS FROM OPERATING ACTIVITIES:
               
     
Net cash provided by operating activities
  $ 27,311     $ 17,145  
 
   
     
 
CASH FLOWS FROM INVESTING ACTIVITIES:
               
 
Capital expenditures
    (13,952 )     (20,817 )
 
Acquisitions, net of cash acquired
    (7,991 )     (12,735 )
 
Proceeds from sale of fixed assets
    1,153       201  
 
Other
    (467 )     (90 )
 
   
     
 
   
Net cash used in investing activities
    (21,257 )     (33,441 )
 
   
     
 
CASH FLOWS FROM FINANCING ACTIVITIES:
               
 
Payments of long-term debt
    (18,829 )     (6,124 )
 
Borrowings under long-term debt
    11,803       20,716  
 
Capital lease obligation, net
    (24 )     (203 )
 
Exercise of stock options
    598       2,720  
 
Other
    42       (24 )
 
   
     
 
   
Net cash (used in) provided financing activities
    (6,410 )     17,085  
 
   
     
 
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS
    (356 )     789  
CASH AND CASH EQUIVALENTS, beginning of period
    14,456       12,519  
 
   
     
 
CASH AND CASH EQUIVALENTS, end of period
  $ 14,100     $ 13,308  
 
   
     
 

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

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CORE LABORATORIES N.V.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

1. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation

     The accompanying unaudited consolidated financial statements include the accounts of Core Laboratories N.V. and have been prepared in accordance with United States of America (“U.S.”) generally accepted accounting principles (“GAAP”) for interim financial information using the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the nine-month period ended September 30, 2002 are not necessarily indicative of the results that may be expected for the year ending December 31, 2002. Balance sheet information at December 31, 2001 was derived from the 2001 annual audited consolidated financial statements. These financial statements should be read in conjunction with the consolidated financial statements and the summary of significant accounting policies and notes thereto included in our Form 10-K for the year ended December 31, 2001. Certain prior year amounts have been reclassified to conform to the current year presentation.

Recent Pronouncements

     In August 2001, the Financial Accounting Standards Board (“FASB”) issued Statement of Financial Accounting Standard (“SFAS”) 144, “Accounting for the Impairment or Disposal of Long-Lived Assets.” SFAS 144 addresses the financial accounting and reporting for the impairment or disposal of long-lived assets. SFAS 144 supersedes SFAS 121, “Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed of.” SFAS 144 provides updated guidance concerning the recognition and measurement of an impairment loss for certain types of long-lived assets and modifies the accounting and reporting of discontinued operations. SFAS 144 is effective for fiscal years beginning after December 31, 2001. We do not expect SFAS 144 to have a material adverse effect on our financial position or results of operations.

     In May 2002, the FASB issued SFAS No. 145 “Rescission of FASB Statements No. 4, 44, and 64, Amendment of FASB Statement No. 13, and Technical Corrections.” Due to the nature of our business, FASB 44, 64 and Amendment of FASB 13 are not applicable. SFAS 145 eliminates SFAS No. 4 “Reporting Gains and Losses from Extinguishment of Debt” and states that gains and losses from extinguishment of debt should be classified as extraordinary items only if they meet the criteria in APB Opinion No. 30 “Reporting the Results of Operations-Reporting the Effects of Disposal of a Segment of a Business, and Extraordinary, Unusual and Infrequently Occurring Events and Transactions.” APB Opinion No. 30 defines extraordinary items as events and transactions that are distinguished by their unusual nature and by the infrequency of their occurrence. The provisions of SFAS 145 related to the classification of gains or losses attributable to debt extinguishments are effective for fiscal years beginning after May 15, 2002. We do not expect the implementation of SFAS 145 to have a material impact on our results of operations.

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     In July 2002, the FASB issued SFAS No. 146, “Accounting for Costs Associated with Exit or Disposal Activities.” SFAS 146 requires companies to recognize costs associated with exit or disposal activities when they are incurred rather than at the date of a commitment to an exit or disposal plan. We will adopt SFAS 146 for all exit or disposal activities initiated after December 31, 2002.

2. ACQUISITIONS

     On July 1, 2002, we acquired certain assets of Advanced Data Solutions (“ADS”) for approximately $8.0 million. The transaction resulted in an increase in goodwill of approximately $5.7 million. In accordance with SFAS 142, goodwill relating to this purchase will not be amortized. In the event certain contingent goals are achieved at year-end 2002, additional consideration in an amount up to $8.0 million may be due and an adjustment would subsequently be made to goodwill reflecting the amount of the additional consideration.

3. INVENTORIES

     Inventories consist of manufactured goods, materials and supplies used for sales or services provided to customers. Inventories are stated at the lower of average or standard cost (includes direct material, labor and overhead) or estimated net realizable value and are reflected net of valuation reserves. Inventories consisted of the following (in thousands):

                   
      September 30,   December 31,
      2002   2001
     
 
      (Unaudited)        
      (Restated)        
      Note 10        
Finished goods
  $ 29,888     $ 31,967  
Parts and materials
    5,497       6,561  
Work in process
    4,150       4,428  
Valuation reserves
    (1,843 )     (1,847 )
 
   
     
 
 
Total inventories
  $ 37,692     $ 41,109  

4. BUSINESS COMBINATIONS, INTANGIBLES AND GOODWILL

     Intangibles include patents, trademarks, service marks and trade names. Goodwill represents the excess of purchase price over the fair value of the net assets and individual intangibles acquired in acquisitions accounted for under the purchase method of accounting. Intangibles are charged to expense in equal amounts over their estimated useful lives.

     In June 2001, the FASB issued two statements, SFAS 141, “Business Combinations”, and SFAS 142, “Goodwill and Other Intangible Assets”, that amend Accounting Principles Board (“APB”) Opinion No. 16, “Business Combinations”, and supersede APB Opinion No. 17, “Intangible Assets.” SFAS 141 eliminates the pooling-of-interests method of accounting for business combinations and establishes the purchase method of accounting as the only acceptable method for all business combinations initiated after June 30, 2001. This statement requires that goodwill resulting from a business combination after June 30, 2001 be recognized as an asset but not amortized, while goodwill existing at June 30, 2001 was amortized through December 31, 2001. Beginning January 1, 2002, we no longer amortize goodwill but will test for impairment annually or more frequently if circumstances indicate a potential impairment. We determined our reporting unit level to be our operating units.

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Using the discounted cash flow method under the requirements of SFAS 142, we have reflected impairment of goodwill of approximately $16.7 million related to our Reservoir Management Segment as a result of adoption of SFAS 142 on January 1, 2002. This impairment was recorded in the first quarter of 2002 and is reflected in the statement of operations as a cumulative effect of change in accounting principle. The cessation of goodwill amortization under the guidelines will result in a reduction of approximately $4.2 million in annual operating expenses, assuming no additional impairment of goodwill. Proforma information relating to goodwill amortization is presented in the following tables:

                                 
    Three Months Ended September 30,   Nine Months Ended September 30,
   
 
  (Unaudited)
    2002   2001   2002   2001
Net Income   (Restated)       (Restated)    
(in thousands)   Note 10       Note 10    
   
 
 
 
Reported net income (loss)
  $ 3,132     $ 9,057     $ (12,066 )   $ 22,957  
Add back: Goodwill amortization
          1,062             3,128  
 
   
     
     
     
 
Adjusted net income (loss)
  $ 3,132     $ 10,119     $ (12,066 )   $ 26,085  
 
   
     
     
     
 

                                 
    Three Months Ended September 30,   Nine Months Ended September 30,
   
 
  (Unaudited)
    2002   2001   2002   2001
    (Restated)       (Restated)    
Basic Earnings per Share   Note 10       Note 10    
   
 
 
 
Reported net income (loss)
  $ 0.09     $ 0.27     $ (0.36 )   $ 0.69  
Add back: Goodwill amortization
          0.03             0.09  
 
   
     
     
     
 
Adjusted net income (loss)
  $ 0.09     $ 0.30     $ (0.36 )   $ 0.78  
 
   
     
     
     
 

                                 
    Three Months Ended September 30,   Nine Months Ended September 30,
   
 
  (Unaudited)
    2002   2001   2002   2001
    (Restated)       (Restated)    
Diluted Earnings per Share   Note 10       Note 10    
   
 
 
 
Reported net income (loss)
  $ 0.09     $ 0.27     $ (0.36 )   $ 0.68  
Add back: Goodwill amortization
          0.03             0.09  
 
   
     
     
     
 
Adjusted net income (loss)
  $ 0.09     $ 0.30     $ (0.36 )   $ 0.77  
 
   
     
     
     
 

5. LONG-TERM DEBT

     Long-term debt is summarized in the following table (in thousands):

                     
        September 30,   December 31,
        2002   2001
       
 
        (Unaudited)        
Credit Facility with a bank group:
               
 
$100,000 revolving debt facilities
  $ 13,000     $ 20,000  
Senior Notes
    75,000       75,000  
Other indebtedness
    823       543  
 
   
     
 
   
Total debt
    88,823       95,543  
Less — current maturities
    823       454  
 
   
     
 
   
Total long-term debt
  $ 88,000     $ 95,089  
 
   
     
 

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     In July 1999, we entered into a $100 million Credit Facility which provides for (i) a committed revolving debt facility of $95 million and (ii) a Euro denominated revolving debt facility with U.S. dollar equivalency of $5 million. At September 30, 2002, approximately $87 million was available for borrowing under the revolving Credit Facility. Loans under the Credit Facility bear interest from LIBOR plus 1.25% to a maximum of LIBOR plus 1.75%. The average interest rate in effect at September 30, 2002 was 3.13%, and the average for the nine months ended September 30, 2002 was 3.15%. The revolving Credit Facility requires interest payments only, until maturity in June 2004.

     In July 1999, we issued $75 million in Senior Notes which bear an average interest rate of 8.16% and require annual principal payments beginning in July 2005 and continuing through July 2011.

     The terms of the Credit Facility and Senior Notes require us to meet certain financial covenants, including certain minimum equity and cash flow tests. We believe that we are in compliance with all such covenants contained in our credit agreements. All of our material wholly owned subsidiaries are guarantors or co-borrowers under both credit agreements.

6. RESTRUCTURING CHARGES

     During the fourth quarter of 2001, we had several transactions which impacted certain operations that were not viewed as ongoing. We restructured certain operations in Mexico, the United Kingdom, the U.S. and other countries to improve operating efficiencies. This restructuring expense included write-offs of assets and leasehold improvements and an accrual for facility restoration, severance benefits and lease termination costs. Approximately 100 field employees were terminated. In the second quarter of 2002, we relocated a facility from Mexico City, Mexico to Villahermosa, Mexico and we intend to relocate one of our operations from Dallas to the Houston Advanced Technology Center in the fourth quarter of 2002. This charge of approximately $3.0 million affected each of our operating segments as follows: Reservoir Description — $0.8 million; Production Enhancement — $0.1 million; Reservoir Management — $2.1 million. Substantially all employee terminations were completed by the end of the first quarter of 2002. Total cash required for this restructuring charge of $2.1 million will be funded from operating activities. Cash required for the costs incurred through September 30, 2002 was $1.5 million. This charge is summarized in the following table:

Restructuring Charges
(in thousands)

                                                 
    Lease                   Asset                
    Obligations   Severance   Restoration   Write-offs1   Other   Total
   
 
 
 
 
 
Total restructuring charges
  $ 598     $ 951     $ 380     $ 862     $ 184     $ 2,975  
Less: Costs incurred through December 31, 2001
    38       394             862       40       1,334  
 
   
     
     
     
     
     
 
Accrual remaining at December 31, 2001
    560       557       380             144       1,641  
Less: Costs incurred through September 30, 2002 (Unaudited)
    116       557       230             85       988  
 
   
     
     
     
     
     
 
Accrual remaining at September 30, 2002 (Unaudited)
  $ 444     $     $ 150     $     $ 59     $ 653  
 
   
     
     
     
     
     
 

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1) The fixed assets and leasehold improvements were disposed of by the end of December 2001. The write-off approximates the carrying amount as these assets were abandoned or sold for salvage value. Depreciation expense was reduced by approximately $20 in 2001 and will be reduced by $82 in 2002 and $281 thereafter. The asset write-offs of $862 were attributable to the Reservoir Management segment.

7. SEGMENT REPORTING

     Our business units have been aggregated into three complementary segments which provide products and services for improving reservoir performance and increasing oil and gas recovery from new and existing fields.

    Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples. We provide analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry.
 
    Production Enhancement: Includes products and services relating to reservoir well completions, perforations, stimulations and production. We provide integrated services to evaluate the effectiveness of well completions and to develop solutions aimed at increasing the effectiveness of enhanced oil recovery projects.
 
    Reservoir Management: Combines and integrates information from reservoir description and production enhancement services to increase production and improve recovery of oil and gas from our clients’ reservoirs.

Segment Analysis

     We manage our business segments separately due to the different technologies each segment utilizes and requires. Results of these segments are presented below using the same accounting policies as used to prepare the Consolidated Balance Sheets and Statements of Operations. We evaluate performance based on income or loss from operations before income tax, interest and other non-operating income (expense). Summarized financial information concerning our segments is shown in the following table (in thousands):

                                   
      Three months ended September 30,   Nine months ended September 30,
     
 
      2002   2001   2002   2001
     
 
 
 
      (Unaudited)
      (Restated)           (Restated)        
      Note 10           Note 10        
Revenues:
                               
Reservoir Description
  $ 55,261     $ 55,842     $ 159,022     $ 156,131  
Production Enhancement
    22,802       28,307       67,307       81,229  
Reservoir Management
    14,369       12,948       36,837       42,343  
 
   
     
     
     
 
 
Consolidated
  $ 92,432     $ 97,097     $ 263,166     $ 279,703  
 
   
     
     
     
 
Income (Loss) Before Interest Expense and Income Tax Expense:
                               
Reservoir Description
  $ 7,049     $ 10,468     $ 16,943     $ 24,845  
Production Enhancement
    890       5,119       1,383       13,691  
Reservoir Management
    (203 )     (993 )     (2,793 )     (682 )
Corporate and Other 1
    (478 )     (15 )     (1,797 )     (48 )
 
   
     
     
     
 
 
Consolidated
  $ 7,258     $ 14,579     $ 13,736     $ 37,806  
 
   
     
     
     
 

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1) “Corporate and Other” represents non-operational charges.

8. EARNINGS PER SHARE

     We present earnings per share in accordance with SFAS No. 128, “Earnings per Share” which requires dual presentation of both basic and diluted earnings per share on the Consolidated Statement of Operations. Basic earnings per common share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects the net additional shares which would be issued if all dilutive stock options outstanding were exercised.

     The following table summarizes the calculation of weighted average common shares outstanding used in the computation of earnings per share:

                                 
    Three Months Ended September 30,   Nine Months Ended September 30,
   
 
    (Unaudited)
    2002   2001   2002   2001
   
 
 
 
Weighted average basic common shares outstanding
    33,266,451       33,165,470       33,240,828       33,032,668  
Effect of dilutive stock options 1
    199,030       630,067             973,240  
 
 
     
     
     
 
Weighted average diluted common shares outstanding
    33,465,481       33,795,537       33,240,828       34,005,908  
 
 
     
     
     
 

1) Options totaling 3,280,710 and 1,071,551 equivalent common shares for the three months ended September 30, 2002 and 2001, and 3,479,740 and 51,801 for the nine months ended September 30, 2002 and 2001, respectively, were not included in the computation of weighted average diluted common shares because the impact of these options was anti-dilutive.

9. SUBSEQUENT EVENT

     On October 10, 2002, Core Laboratories announced that it will activate a share repurchase program as approved by shareholders at our last annual meeting in May 2002, authorizing the purchase of up to 10% of our outstanding shares through November 29, 2003. The repurchase of the shares will take place in the open market and will be at the discretion of management. It is expected that funding of the program will come from operating cash flow. As of November 11, 2002, we repurchased approximately 213,000 shares of Core Laboratories common stock for an aggregate purchase price of approximately $2,025,000.

10. RESTATEMENT OF FINANCIALS

     We have restated our previously reported Consolidated Balance Sheet as of September 30, 2002 and our Consolidated Statement of Operations and Consolidated Statement of Cash Flows for the three and nine months ended September 30, 2002. In connection with our 2002 year-end audit, we determined that certain items of revenues and expenses had been accounted for in the incorrect

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quarter. The following table summarizes the impact and explanation of the adjustments on our previously reported quarterly results (in thousands, except per share data):

                                 
    Three Months Ended   Nine Months Ended
    September 30, 2002   September 30, 2002
   
 
    (Unaudited)
    Previously           Previously        
    Reported   Restated   Reported   Restated
   
 
 
 
Service and sales revenues
  $ 93,341     $ 92,432  a   $ 265,869     $ 263,166  a
Cost of services and sales
    74,667       74,869  b,c     214,022       217,459  b,c
Other operating expenses
    9,472       10,305  d,e,f     29,542       31,971  d,e,f
 
   
     
     
     
 
Operating income
    9,202       7,258       22,305       13,736  
Interest expense
    1,849       1,857       5,737       5,760  
Income before income tax expense
    7,353       5,401       16,568       7,976  
Income tax expense
    2,059       2,269  g     4,639       3,350  g
 
   
     
     
     
 
Income before cumulative effect of change in accounting principle
    5,294       3,132       11,929       4,626  
Cumulative effect of change in accounting principle
                (16,692 )     (16,692 )
 
   
     
     
     
 
Net income (loss)
  $ 5,294     $ 3,132     $ (4,763 )   $ (12,066 )
 
   
     
     
     
 
Per share data:
                               
Basic earnings (loss) per share
  $ 0.16     $ 0.09     $ (0.14 )   $ (0.36 )
 
   
     
     
     
 
Weighted average basic common shares outstanding
    33,266       33,266       33,241       33,241  
 
   
     
     
     
 
Diluted earnings (loss) per share
  $ 0.16     $ 0.09     $ (0.14 )   $ (0.36 )
 
   
     
     
     
 
Weighted average diluted common shares outstanding
    33,465       33,465       33,670       33,241  
 
   
     
     
     
 

  a.   Adjusts revenues by $909 and $2,703 for the three and nine months ended September 30, 2002, respectively, as a result of untimely processing of credit memos.
 
  b.   Record additional provision for doubtful accounts of $188 and $2,877 for the three and nine months ended September 30, 2002, respectively, based on our historical experience.
 
  c.   Adjustment for cost of sales of $14 and $560 for the three and nine months ended September 30, 2002, respectively, as a result of reconciliation of account balances primarily in Mexico and Venezuela.
 
  d.   Record adjustment for expense of $173 and $518 for the three and nine months ended September 30, 2002, respectively, to correct depreciation expense based on estimated useful life of related assets.
 
  e.   Additional general and administrative expense of $265 and $458 for the three and nine months ended September 30, 2002, respectively, primarily for compensation expense.
 
  f.   Additional expense of $395 and $1,453 for the three and nine months ended September 30, 2002, respectively, for correction of foreign exchange adjustment in Venezuela.
 
  g.   Income tax effect of all adjustments above.

     The following table summarizes the impact of these adjustments on our previously reported quarterly financial position (in thousands):

                 
    September 30, 2002
   
    (Unaudited)
    Previously        
Consolidated Balance Sheets   Reported   Restated

 
 
Cash
  $ 14,581     $ 14,100  
Accounts receivable
  $ 92,187     $ 86,400  
Inventories
  $ 38,004     $ 37,692  
Prepaid expenses and other current assets
  $ 13,827     $ 13,088  
Property, plant and equipment, net
  $ 96,132     $ 96,022  
Intangibles, goodwill and other assets
  $ 150,269     $ 150,147  
Accounts payable
  $ 15,563     $ 15,821  
Other current liabilities
  $ 16,218     $ 15,708  
Other liabilities and minority interest
  $ 22,551     $ 22,556  
Retained earnings
  $ 83,546     $ 76,243  

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CORE LABORATORIES N.V.
MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

General

     This discussion includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. We have based the forward-looking statements relating to our operations on our current expectations, estimates and projections. We caution you that these statements are not guarantees of future performance and involve risks and uncertainties that we cannot predict. In addition, we have based many of these forward-looking statements on assumptions about future events that may prove to be inaccurate. Accordingly, our actual outcomes and results may differ materially from what we have expressed or forecast in the forward-looking statements. Our forward-looking statements are based on assumptions that we believe to be reasonable but that may not prove to be accurate. All of our forward-looking information is, therefore, subject to risks and uncertainties that could cause actual results to differ materially from the results expected. Although it is not possible to identify all factors, these risks and uncertainties include the risk factors discussed below.

     Industry risks

     The oil and gas industry is highly cyclical and there are numerous factors affecting the supply of and demand for oil and natural gas, which include:

    market prices of oil and gas;
 
    cost of producing oil and natural gas;
 
    the level of drilling and production activity;
 
    mergers, consolidations and downsizing among our clients;
 
    coordination by OPEC; and
 
    the impact of commodity prices on the expenditure levels of our customers.

     Business risks

     Our results of operations could be adversely affected by risks and uncertainties in the business environment in which we operate, including:

    competition in our markets;
 
    the realization of anticipated synergies from acquired businesses and future acquisitions;
 
    our ability to continue to develop or acquire new and useful technology; and
 
    access to capital, interest rates and the cost of capital.

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     International risks

     We conduct our business in over 50 countries and are subject to political and economic instability and the laws and regulations in the countries in which we operate. These include:

    global economic conditions;
 
    political actions and requirements of national governments including trade restrictions and embargos and expropriations of assets;
 
    potential income tax liabilities in multiple jurisdictions;
 
    war;
 
    civil unrest;
 
    fluctuations and changes in currency exchange rates; and
 
    the impact of inflation.

     Other risks

     The events of September 11, 2001, the economic downturn and political, corporate and credit events that followed and continue to unfold could result in lower demand for our products and services. Our client base could be impacted by events we cannot predict or we could be impacted by a change in the conduct of business, transportation and security measures. In addition, we are subject to other risk factors such as the impact of environmental regulations and litigation risks, as well as the dependence on the oil and gas industry. Many of these risks are beyond our control. In addition, future trends for pricing, margins, revenues and profitability remain difficult to predict in the industries we serve and under current economic and political conditions. We do not assume any responsibility to publicly update any of our forward-looking statements regardless of whether factors change as a result of new information, future events or for any other reason.

     Our operations are subject to various risk and other factors including, but not limited to:

    our ability to continue to develop or acquire new and useful technology;
 
    the realization of anticipated synergies from acquired businesses and future acquisitions;
 
    our dependence on the oil and gas industry, and the impact of commodity prices on the expenditure levels of our customers;
 
    competition in our markets; and
 
    the risks and uncertainties attendant to adverse industry, political, economic and financial market conditions, including stock prices, government regulations, interest rates and credit availability.

     Core Laboratories was established in 1936 and is one of the world’s leading providers of proprietary and patented reservoir description, production enhancement and reservoir management services to the oil and gas industry. These services are directed toward enabling our clients to improve reservoir performance and increase oil and gas recovery from their producing fields. We have over 70 offices in more than 50 countries and have approximately 4,450 employees.

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Results of Operations

     We have restated our previously reported Consolidated Balance Sheet as of September 30, 2002 and our Consolidated Statement of Operations and Consolidated Statement of Cash Flows for the three and nine months ended September 30, 2002. In connection with our 2002 year-end audit, we determined that certain items of revenues and expenses had been accounted for in the incorrect quarter. For additional information about restatements, see Note 10 of the Notes to Consolidated Financial Statements.

     Service revenues for the third quarter of 2002 were consistent with the same period in the prior year. Service revenues for the nine month period ended September 30, 2002 decreased $5.5 million, a 2.5% decrease from the same period last year, primarily due to continued weak activity levels of our clients in North America.

     Cost of services expressed as a percentage of service revenue were 79% and 74% in the third quarter of 2002 and the same period last year, respectively, and 81% and 76% in the nine month period ended September 30, 2002 and in the same period last year, respectively. The increase in the cost of services percentage is primarily due to the completion of international projects with lower margins coupled with a decrease in higher margin projects in the North American Production Enhancement business.

     Sales revenues decreased to $14.9 million in the third quarter of 2002 from $19.8 million in the third quarter of 2001, a 25% decrease. Sales revenue for the nine month period ended September 30, 2002 decreased $11.0 million to $43.7 million from $54.7 million in the same period in 2001, a 20% decrease. These decreases were caused, in most part, to the deep decline in drilling for natural gas in the North American markets. Consequently, there was lower demand for our well completion products. Sequentially, revenues in the third quarter of 2002 increased $1.1 million, or 8%, from the second quarter of 2002 as the rig count and related activity levels in North America improved slightly.

     Cost of sales in the third quarter of 2002 was 89% of sales revenue as compared to 78% for the same period last year. For the nine month period ended September 30, 2002, cost of sales was 91% as compared to 79% in the prior year. Although cost reduction efforts have been made during the year, including this quarter, to minimize our cost structure, the deep decline in drilling for natural gas in North American markets has caused significantly lower demand for our products. Consequently, cost of sales as a percentage of revenues continues to run at higher than desired levels.

     General and administrative expenses are comprised of corporate management and centralized administrative services which benefit our operating subsidiaries. Although general and administrative expenses are generally more fixed in nature as a percentage of revenues, we did experience an increase of $0.7 million and $3.0 million for the three and nine month periods ended September 30, 2002, respectively, as compared to the corresponding periods in 2001. These increases were largely attributable to growth in the number of people necessary to support increases in the scope of our operations as well as an increase in our direct marketing effort focused on providing integrated solutions to our clients, as well as continuing the implementation of the company-wide financial system.

     Depreciation and amortization expense for the third quarter of 2002 increased $0.4 million and $1.4 million for the nine month period ended September 30, 2002, as compared to the corresponding

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periods in 2001. These increases were due to the purchase of certain assets from Advanced Data Solutions (“ADS”) as well as additional capital investments, which include additions to the Houston facility.

     As a result of adoption of SFAS 142 beginning January 1, 2002, we no longer amortize goodwill but will test for impairment annually or more frequently if circumstances indicate a potential impairment. Under the requirements, in the first quarter we reflected impairment of goodwill of approximately $16.7 million related to our Reservoir Management segment. This impairment is reflected in the consolidated statement of operations as a cumulative effect of change in accounting principle. The cessation of goodwill amortization under the guidelines resulted in a reduction in operating expenses of approximately $1.0 million and $3.1 million for the three and nine month periods ended September 30, 2002, respectively, and will result in a reduction of approximately $4.2 million in annual operating expenses, assuming no additional impairment of goodwill.

     The 2002 effective income tax rate increased to 42% of income before cumulative effect of change in accounting principle from the 2001 rate of 28%. This increase is the result of an increase in expenses that are not deductible for tax purposes and an increased valuation allowance on Venezuela deferred tax assets.

     During the fourth quarter of 2001, we had several transactions which impacted certain operations that were not viewed as ongoing. We restructured certain operations in Mexico, the United Kingdom, the U.S. and other countries to improve operating efficiencies. This restructuring expense included write-offs of assets and leasehold improvements and an accrual for facility restoration, severance benefits and lease termination costs. Approximately 100 field employees were terminated. In the second quarter of 2002, we relocated a facility from Mexico City, Mexico to Villahermosa, Mexico and we intend to relocate one of our operations from Dallas to the Houston Advanced Technology Center in the fourth quarter of 2002. This charge of approximately $3.0 million affected each of our operating segments as follows: Reservoir Description — $0.8 million; Production Enhancement — $0.1 million; Reservoir Management — $2.1 million. Substantially all employee terminations were completed by the end of the first quarter of 2002. Total cash required for this restructuring charge of $2.1 million will be funded from operating activities. Cash required for the costs incurred through September 30, 2002 was $1.5 million. This charge is summarized in the following table:

Restructuring Charges
(in thousands)

                                                 
    Lease                   Asset                
    Obligations   Severance   Restoration   Write-offs1   Other   Total
   
 
 
 
 
 
Total restructuring charges
  $ 598     $ 951     $ 380     $ 862     $ 184     $ 2,975  
Less: Costs incurred through December 31, 2001
    38       394             862       40       1,334  
 
   
     
     
     
     
     
 
Accrual remaining at December 31, 2001
    560       557       380             144       1,641  
Less: Costs incurred through September 30, 2002 (Unaudited)
    116       557       230             85       988  
 
   
     
     
     
     
     
 
Accrual remaining at September 30, 2002 (Unaudited)
  $ 444     $     $ 150     $     $ 59     $ 653  
 
   
     
     
     
     
     
 

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1) The fixed assets and leasehold improvements were disposed of by the end of December 2001. The write-off approximates the carrying amount as these assets were abandoned or sold for salvage value. Depreciation expense was reduced by approximately $20 in 2001 and will be reduced by $82 in 2002 and $281 thereafter. The asset write-offs of $862 were attributable to the Reservoir Management segment.

Segment Analysis
(in thousands)

                                   
      Three months ended September 30,   Nine months ended September 30,
     
 
      2002   2001   2002   2001
     
 
 
 
      (Unaudited)
      (Restated)
Note 10
          (Restated)
Note 10
       
Revenues:
                               
Reservoir Description
  $ 55,261     $ 55,842     $ 159,022     $ 156,131  
Production Enhancement
    22,802       28,307       67,307       81,229  
Reservoir Management
    14,369       12,948       36,837       42,343  
 
   
     
     
     
 
 
Consolidated
  $ 92,432     $ 97,097     $ 263,166     $ 279,703  
 
   
     
     
     
 
Income (Loss) Before Interest Expense and Income Tax Expense:
                               
Reservoir Description
  $ 7,049     $ 10,468     $ 16,943     $ 24,845  
Production Enhancement
    890       5,119       1,383       13,691  
Reservoir Management
    (203 )     (993 )     (2,793 )     (682 )
Corporate and Other 1
    (478 )     (15 )     (1,797 )     (48 )
 
   
     
     
     
 
 
Consolidated
  $ 7,258     $ 14,579     $ 13,736     $ 37,806  
 
   
     
     
     
 

1) “Corporate and Other” represents non-operational charges.

Reservoir Description

     Revenues from the Reservoir Description segment increased to $55.3 million in the third quarter of 2002 from $55.8 million in the same period in the prior year. Revenues for the nine month period ended September 30, 2002 increased $2.9 million. Increased international demand for our existing services and deepwater services, as well as the introduction of new technologies into international arenas bolstered revenue in this segment. Earnings before interest and taxes decreased by $3.4 million in the third quarter of 2002 and $7.9 million in the nine month period ended September 30, 2002, compared to the same periods in the prior year due to decreased margins relating primarily to reduced activity levels in the North American natural gas markets. Sequentially, revenues in the third quarter of 2002 increased $1.0 million, or 2%, from the second quarter of 2002 while earnings before interest and taxes in the third quarter of 2002 increased $0.9 million, or 14%, from the second quarter of 2002. Although international activity levels have been flat, as indicated by drilling activity, we have been able to increase revenue and earnings on a sequential basis through the addition of new services and increases in market penetration.

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Production Enhancement

     Revenues from the Production Enhancement segment were $22.8 million in the third quarter of 2002 compared to $28.3 million in the same period in the prior year, a decrease of 19%. For the nine month period ended September 30, 2002, revenues decreased $13.9 million to $67.3 million, a decrease of 17% from the same period in the prior year. Due to lower industry activity levels, we continued to experience decreased demand for our well completion and stimulation technologies, primarily in North American markets in the third quarter. Earnings before interest and taxes decreased $4.2 million in the third quarter and $12.3 million in the nine month period ended September 30, 2002 compared to the same periods in 2001. Sequentially, Production Enhancement revenues in the third quarter of 2002 increased $1.7 million, or 8%, from the second quarter of 2002 while earnings before interest and taxes in the third quarter of 2002 increased $1.0 million from the second quarter of 2002 as the rig count and related activity in North America has improved slightly.

Reservoir Management

     Revenues from the Reservoir Management segment in the third quarter of 2002 were $14.4 million, an increase of $1.4 million compared to the same period in the prior year, while revenues for the nine month period ended September 30, 2002 decreased $5.5 million compared to the same period in 2001. The increase in the third quarter of 2002 was primarily the additional activity resulting from the purchase of the ADS assets and due to the completion of large projects in Mexico.

Liquidity and Capital Resources

     We have historically financed our activities through cash flows from operating activities, bank credit facilities, equity financing and the issuance of debt.

     For the nine month period ended September 30, 2002, cash flows from operating activities were $27.3 million, an increase of $10.2 million from the same period in 2001. At September 30, 2002, we had working capital of $128.5 million and a current ratio of 5.0 to 1.0, compared to working capital of $139.3 million and a current ratio of 4.5 to 1.0 at December 31, 2001. We are a Netherlands holding company and we conduct substantially all of our operations through subsidiaries. Consequently, our cash flow is dependent upon the ability of our subsidiaries to pay cash dividends or otherwise distribute or advance funds to us.

     For the nine month period ended September 30, 2002, our investing activities used $21.3 million compared to $33.4 million in the same period in 2001. Included in the capital expenditures is a new lab and office facility in Moscow, Russia. We also acquired certain assets from ADS for approximately $8.0 million. For the nine month period ended September 30, 2002 our financing activities used $6.4 million and provided $17.1 million in the same period in 2001. The use of cash in 2002 financing activities was due to a net reduction of approximately $7.0 million in the balance outstanding under the Credit Facility.

     Our ability to maintain and grow our operating income and cash flows is dependent upon continued investing activities. We believe our future cash flows from operating activities, supplemented, if necessary, by our borrowing capacity and issuances of additional equity, should be sufficient to fund debt requirements, capital expenditures, working capital and future acquisitions.

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CORE LABORATORIES N.V.
QUANTITATIVE AND QUALITATIVE DISCLOSURES OF MARKET RISK

Market Risk

     We are exposed to market risk, which is the potential loss arising from adverse changes in market prices and rates. We do not enter, or intend to enter, into derivative financial instruments for trading or speculative purposes. We do not believe that our exposure to market risks, which are primarily related to interest rate changes and fluctuations in foreign exchange rates, are material. During 1999, we issued fixed rate Senior Notes denominated in U.S. dollars. The proceeds were used to pay off variable rate term loans. This significantly reduced our exposure to market risk. This section should be read in conjunction with “Note 5 — Long-Term Debt” of the Notes to Consolidated Financial Statements.

Interest Rate Risk

     We are exposed to interest rate risk on our Credit Facility debt that carries a variable interest rate. At September 30, 2002, our variable rate debt outstanding of $13.0 million approximated its fair value. A one percent change in the interest rate would not cause a material change in interest expense on an annual basis. We attempt to balance the benefit of variable rate debt that has inherent increased risk with fixed rate debt that has less market risk.

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CORE LABORATORIES N.V.
CONTROLS AND PROCEDURES

     Within the 90 days prior to the date of this report, the Company carried out an evaluation of the effectiveness of the design and operation of the issuer’s disclosure controls and procedures (as defined in 17 CFR §§240.13a-14(c) and 240 15d-14c). Such evaluation was carried out under the supervision and with the participation of the issuer’s management, including the issuer’s chief executive officer and chief financial officer; and it is the conclusion of the chief executive officer and chief financial officer that such disclosure controls and procedures operate such that important information flows to appropriate collection and disclosure points in a timely manner and are effective in ensuring that material information is accumulated and communicated to management of the issuer, and made known to the chief executive officer and chief financial officer particularly during the period in which this report was prepared, as appropriate to allow timely decisions regarding required disclosure.

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CORE LABORATORIES N.V.
PART II — OTHER INFORMATION

Item 1. Legal Proceedings.

     We are from time to time subject to legal proceedings and claims that arise in the ordinary course of business. We believe that the outcome of current legal actions will not have a material adverse effect upon our consolidated financial position or results of operations.

Item 2. Changes in Securities.

     None

Item 3. Defaults Upon Senior Securities.

     None

Item 4. Submission of Matters to a Vote of Security Holders.

     None

Item 5. Other Information.

     All references to the nominal value of EUR 0.01 (formerly NLG 0.03) of each share in the share capital of Core Laboratories N.V. is made with reference to article 2:67c of the Dutch Civil Code.

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

     (a)  Exhibits

     None

     (b)  Reports on Form 8-K

     None

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SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant, Core Laboratories N.V., has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

  CORE LABORATORIES N.V.
by: Core Laboratories International B.V.
         
Dated: November 13, 2002   By:   /s/ Richard L. Bergmark
       
    Richard L. Bergmark
    Chief Financial Officer

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Certification

I, David M. Demshur, certify that:

1.     I have reviewed this quarterly report on Form 10-Q/A of Core Laboratories N.V.;

2.     Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.     Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.     The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

b) evaluated the effectiveness of the registrant’s disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the “Evaluation Date”); and

c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5.     The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant’s ability to record, process, summarize and report financial data and have identified for the registrant’s auditors any material weaknesses in internal controls; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls; and

6.     The registrant’s other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Date: April 4, 2003

     
  By: /s/ David M. Demshur
   
    David M. Demshur
    Chief Executive Officer

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I, Richard L. Bergmark, certify that:

1.     I have reviewed this quarterly report on Form 10-Q/A of Core Laboratories N.V.;

2.     Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.     Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.     The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

b) evaluated the effectiveness of the registrant’s disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the “Evaluation Date”); and

c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5.     The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant’s ability to record, process, summarize and report financial data and have identified for the registrant’s auditors any material weaknesses in internal controls; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls; and

6.     The registrant’s other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Date: April 4, 2003

     
  By: /s/ Richard L. Bergmark
   
    Richard L. Bergmark
    Chief Financial Officer

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