UNITED STATES SECURITIES AND EXCHANGE COMMISSION FORM 10-K Washington, D.C. 20549 X ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________________ to ____________________ OR CORE LABORATORIES N.V. (Exact name of registrant as specified in its charter) Commission File Number 001-14273 The Netherlands  (State or other jurisdiction of incorporation or organization)  Strawinskylaan 913  Tower A, Level 9  1077 XX Amsterdam  The Netherlands  (Address of principal executive offices)  Not Applicable (I.R.S. Employer Identification No.) Not Applicable (Zip Code) Registrant’s telephone number, including area code: (31-20) 420-3191 Securities registered pursuant to Section 12(b) of the Act: Title of each class  Common Shares, EUR 0.02 Par Value Per Share  Name of each exchange on which registered New York Stock Exchange; NYSE Euronext Amsterdam Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes X No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes No X 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 Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the  registrant was required to submit and post such files). Yes X No Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. X Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. Large accelerated filer X Accelerated filer Non-accelerated filer (Do not check if a smaller reporting company) Smaller reporting company Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes No X As of June 30, 2013, the number of common shares outstanding was 45,709,251. At that date, the aggregate market value of common shares held by non-affiliates of the registrant was approximately $6,789,682,464. As of February 12, 2014, the number of common shares outstanding was 44,855,765. The information required by Part III of this Report, to the extent not set forth herein, is incorporated herein by reference from the registrant’s definitive proxy  statement relating to the Annual Meeting of Shareholders to be held in 2014, which definitive proxy statement shall be filed with the Securities and Exchange  Commission within 120 days after the end of the fiscal year to which this Report relates. This document (excluding exhibits) contains 72 pages. The table of contents is set forth on the following page. The exhibit index begins on page 31. DOCUMENTS INCORPORATED BY REFERENCE (Mark One)