Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Elvig Mark F
2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2008
3. Issuer Name and Ticker or Trading Symbol
CORE LABORATORIES N V [CLB]
(Last)
(First)
(Middle)
6316 WINDFERN
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP, Counsel & Secretary
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

HOUSTON, TX 77040
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Shares 294
D
 
Common Shares 26
I
401(k) Plan
Common Shares 79
I
Deferred Compensation Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Shares   (1)   (1) Common Shares 1,000 (1) $ 0 D  
Restricted Shares   (2)   (2) Common Shares 500 (2) $ 0 D  
Restricted Shares   (3)   (3) Common Shares 2,100 $ 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Elvig Mark F
6316 WINDFERN
HOUSTON, TX 77040
      VP, Counsel & Secretary  

Signatures

/s/ Mark Elvig 05/23/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Restricted Shares vest in the amount of 1/6th of the grant on each of the six annual anniversaries following the date of 12/01/2006. 1/6th of the original grant has vested and is not included in the number of shares listed on this line.
(2) The Restricted Shares vest in the amount of 1/6th of the grant on each of the six annual anniversaries following the date of 03/01/2007. 1/6th of the original grant has vested and is not included in the number of shares listed on this line.
(3) The Restricted Shares vest in the amount of 1/6th of the grant on each of the six annual anniversaries following the date of 04/01/2008.

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