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 *
  Dew Lyndol L
 2. Date of Event Requiring Statement (Month/Day/Year)
09/18/2006		 3. Issuer Name and Ticker or Trading Symbol
DIAMOND OFFSHORE DRILLING INC [DO]
(Last)
(First)
(Middle)
15415 KATY FREEWAY, SUITE 100		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior Vice President
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

HOUSTON, TX 77094		 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)

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
Stock Option (right to buy) 04/22/2007 04/22/2013 Common Stock 313 $ 19.78 D  
Stock Option (right to buy) 04/22/2007 07/01/2013 Common Stock 313 $ 21.23 D  
Stock Option (right to buy) 04/22/2007 10/01/2013 Common Stock 313 $ 19.08 D  
Stock Option (right to buy) 04/22/2007 12/31/2013 Common Stock 313 $ 20.77 D  
Stock Option (right to buy) 05/18/2006(1) 05/18/2014 Common Stock 938 $ 22.49 D  
Stock Option (right to buy) 05/18/2006(1) 07/01/2014 Common Stock 938 $ 23.65 D  
Stock Option (right to buy) 05/18/2006(1) 10/01/2014 Common Stock 938 $ 32.78 D  
Stock Option (right to buy) 05/18/2006(1) 12/31/2014 Common Stock 938 $ 39.98 D  
Stock Option (right to buy) 04/19/2007(2) 04/19/2015 Common Stock 938 $ 45.77 D  
Stock Option (right to buy) 04/19/2007(2) 07/01/2015 Common Stock 938 $ 53.6 D  
Stock Option (right to buy) 04/19/2007(2) 10/03/2015 Common Stock 938 $ 61.9 D  
Stock Option (right to buy) 04/19/2007(2) 12/31/2015 Common Stock 938 $ 69.38 D  
Stock appreciation right 04/27/2007(3) 04/27/2016 Common Stock 1,250 $ 92.67 D  
Stock appreciation right 04/27/2007(3) 07/03/2016 Common Stock 1,250 $ 83.44 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Dew Lyndol L
15415 KATY FREEWAY
SUITE 100
HOUSTON, TX 77094		       Senior Vice President  

Signatures

/s/ William C. Long Attorney-in-Fact for Lyndol L. Dew 09/25/2006
**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) 313 of the options vested on May 18, 2006. The remaining options vest in two equal annual installments beginning on May 18, 2007.
(2) The options vest in three equal annual installments beginning on April 19, 2007.
(3) The stock appreciation right vests in four equal annual installments beginning on April 27, 2007.
 
Remarks:
EXHIBIT LIST
Exhibit 24 - Power of Attorney

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