Report of Independent Registered Public Accounting Firm To the Board of Supervisory Directors and Shareholders of Core Laboratories N.V.: In our opinion, the consolidated financial statements listed in the index appearing under Item 15(a)(1) present fairly, in all material  respects, the financial position of Core Laboratories N.V. (a Netherlands corporation) and its subsidiaries at December 31, 2013 and  2012, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2013 in  conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial  statement schedule listed in the index appearing under Item 15(a)(2) presents fairly, in all material respects, the information set forth  therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained,  in all material respects, effective internal control over financial reporting as of December 31, 2013, based on criteria established in  Internal Control - Integr ated F r amework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission  (COSO). The Company’s management is responsible for these financial statements and the financial statement schedule, for main- taining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial  reporting, included in Management’s Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility  is to express opinions on these financial statements, on the financial statement schedule, and on the Company’s internal control over  financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company  Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assur- ance about whether the financial statements are free of material misstatement and whether effective internal control over financial  reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence  supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant esti- mates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial  reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness  exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits  also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a  reasonable basis for our opinions. A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliabil- ity of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted  accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to  the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the  company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements  in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only  in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding  prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect  on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections  of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in  conditions, or that the degree of compliance with the policies or procedures may deteriorate. /s/ PricewaterhouseCoopers LLP Houston, Texas  February 13, 2014 33