EX-23 3 exh2301.txt CORE LAB 11-K EXHIBIT 23 CONSENT EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-43859) of Core Laboratories N.V. of our report dated June 25, 2002 relating to the financial statements of Core Laboratories Profit Sharing and Retirement Plan, which appears in this form 11-K. /s/ PricewaterhouseCoopers LLP Houston, Texas June 28, 2002