Exhibit No. Exhibit Title Incorporated by Reference  from the Following Documents 10.27 Form of Restated Employment Agreement between Core Laboratories N.V. and  Richard L. Bergmark dated as of December 31  2007 1 Form 10-Q  May 12  2008 (File No. 001-14273) 10.28 Amendment to Restated Employment Agreement dated December 31  2007   between Core Laboratories N.V. and Richard L. Bergmark 1 Form 10-K  February 22  2011  (File No. 001-14273) 10.29 Form of Restated Employment Agreement between Core Laboratories N.V. and  Monty L. Davis dated as of December 31  2007 1 Form 10-Q  May 12  2008 (File No. 001-14273) 10.3 Amendment to Restated Employment Agreement dated December 31  2007   between Core Laboratories N.V. and Monty L. Davis 1 Form 10-K  February 22  2011  (File No. 001-14273)  10.31 Master Note Purchase Agreement  dated as of September 30  2011 Form 8-K  September 30  2011  (File No. 001-14273) 21.1 Significant Subsidiaries of the Registrant Filed Herewith 23.1 Consent of PricewaterhouseCoopers LLP Filed Herewith 31.1 Certification of Chief Executive Officer Pursuant to Rule 13a-14 of the Securities Exchange Act of 1934  As Adopted Pursuant to Section 302 of the  Sarbanes-Oxley Act of 2002 Filed Herewith 31.2 Certification of Chief Financial Officer Pursuant to Rule 13a-14 of the Securities Exchange Act of 1934  As Adopted Pursuant to Section 302 of the  Sarbanes-Oxley Act of 2002 Filed Herewith 32.1 Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350  As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Furnished Herewith 32.2 Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350  As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Furnished Herewith 101.INS XBRL Instance Document Filed Herewith 101.SCH XBRL Schema Document Filed Herewith 101.CAL XBRL Calculation Linkbase Document Filed Herewith 101.LAB XBRL Label Linkbase Document Filed Herewith 101.PRE XBRL Presentation Linkbase Document Filed Herewith 101.DEF XBRL Definition Linkbase Document Filed Herewith 1  Management contracts or compensatory plans or arrangements. 66