UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                  -------------



                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934




Date of report (Date of earliest event reported):      MAY 10, 2004
                                                    ----------------------------


                         DIAMOND OFFSHORE DRILLING, INC.
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               (Exact Name of Registrant as Specified in Charter)



    DELAWARE                         1-13926                   76-0321760
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(State or Other Jurisdiction    (Commission File Number)     (IRS Employer
   of Incorporation)                                         Identification No.)


                               15415 KATY FREEWAY
                              HOUSTON, TEXAS 77094
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              (Address of Principal Executive Offices and Zip Code)



Registrant's telephone number, including area code:           (281) 492-5300
                                                    ----------------------------


                                 NOT APPLICABLE
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          (Former name or former address, if changed since last report)

INFORMATION TO BE INCLUDED IN THE REPORT ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS ------------------------------------------------------------------ (c) Exhibits. Exhibit number Description -------------- ----------- 99.1 Rig Status Report as of May 10, 2004 ITEM 9. REGULATION FD DISCLOSURE ------------------------ The Registrant hereby incorporates by reference into this Item 9 the summary report of the status, as of May 10, 2004, of the offshore drilling rigs of the Registrant attached as Exhibit 99.1, which is being furnished in accordance with Rule 101(e)(1) under Regulation FD and shall not be deemed to be filed. Statements in this report that contain "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, include, but are not limited to, statements regarding the current term, start and end dates and comments concerning future contracts and availability and other aspects of the Registrant's drilling rigs. Such statements are inherently subject to a variety of risks and uncertainties that could cause actual results to differ materially from those anticipated or projected. A discussion of the risk factors that could impact these areas and the Registrant's overall business and financial performance can be found in the Registrant's reports and other documents filed with the Securities and Exchange Commission. These factors include, among others, general economic and business conditions, casualty losses, industry fleet capacity, changes in foreign and domestic oil and gas exploration and production activity, competition, changes in foreign, political, social and economic conditions, regulatory initiatives and compliance with governmental regulations, customer preferences and various other matters, many of which are beyond the Registrant's control. Given these concerns, investors and analysts should not place undue reliance on forward-looking statements. Each forward-looking statement speaks only as of the date of the rig status report, and the Registrant undertakes no obligation to publicly update or revise any forward-looking statements. 2

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. DIAMOND OFFSHORE DRILLING, INC. By: /s/ William C. Long ----------------------------------- William C. Long Vice President, General Counsel & Secretary Dated: May 10, 2004 3

EXHIBIT INDEX Exhibit number Description -------------- ----------- 99.1 Rig Status Report as of May 10, 2004 4

                                                                    EXHIBIT 99.1

                        DIAMOND OFFSHORE DRILLING, INC.
                      RIG STATUS REPORT AS OF MAY 10, 2004




  RIG NAME            WD      DESIGN                 LOCATION           STATUS*             OPERATOR
- ---------------------------------------------------------------------------------------------------------------
                                                                           
DOMESTIC DEEPWATER SEMISUBMERSIBLES (6)
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Ocean Quest          3,500'  Victory Class              GOM            Contracted              EPL
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Ocean Star           5,500'  Victory Class              GOM               Idle                 DODI
- ---------------------------------------------------------------------------------------------------------------
Ocean America        5,500'  Ocean Odyssey              GOM               Idle                 DODI
- ---------------------------------------------------------------------------------------------------------------
Ocean Valiant        5,500'  Ocean Odyssey              GOM            Contracted              ENI
- ---------------------------------------------------------------------------------------------------------------
Ocean Victory        5,500'  Victory Class              GOM            Contracted         Chevron/Texaco
- ---------------------------------------------------------------------------------------------------------------
Ocean Confidence     7,500'  DP Aker H-3.2              GOM            Contracted               BP
                             Modified
- ---------------------------------------------------------------------------------------------------------------

DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3)
- ---------------------------------------------------------------------------------------------------------------
Ocean Concord        2,200'  F&G SS-2000                GOM            Contracted            Westport
- ---------------------------------------------------------------------------------------------------------------
Ocean Lexington      2,200'  F&G SS-2000                GOM            Contracted        Walter Oil & Gas
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Ocean Saratoga       2,200'  F&G SS-2000                GOM               Idle                 DODI
- ---------------------------------------------------------------------------------------------------------------

DOMESTIC JACKUPS (11)
- ---------------------------------------------------------------------------------------------------------------
Ocean Crusader       200'    Mat Cantilever             GOM            Contracted          Stone Energy
- ---------------------------------------------------------------------------------------------------------------
Ocean Drake          200'    Mat Cantilever             GOM            Contracted           ADTI/Palace
                                                                                            Operating
- ---------------------------------------------------------------------------------------------------------------
Ocean Columbia       250'    Independent Leg            GOM            Contracted           Kerr-McGee
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Spartan        300'    Independent Leg            GOM            Contracted              LLOG
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Spur           300'    Independent Leg            GOM            Contracted           Forest Oil
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean King           300'    Independent Leg            GOM            Contracted           BP America
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Nugget         300'    Independent Leg            GOM            Contracted            Anadarko
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Summit         300'    Independent Leg            GOM            Contracted         Chevron/Texaco
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Warwick        300'    Independent Leg            GOM            Contracted           Kerr-McGee
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Titan          350'    Independent Leg            GOM            Contracted          Stone Energy
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------
Ocean Tower          350'    Independent Leg            GOM            Contracted            Newfield
                             Cantilever
- ---------------------------------------------------------------------------------------------------------------


                                       1

- --------------------------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (17) - --------------------------------------------------------------------------------------------------------------- MEXICO - --------------------------------------------------------------------------------------------------------------- Ocean Ambassador 1,100' Bethlehem SS-2000 GOM Contracted PEMEX - --------------------------------------------------------------------------------------------------------------- Ocean Whittington 1,500' Aker H-3 GOM Contracted PEMEX - --------------------------------------------------------------------------------------------------------------- Ocean Worker 3,500' F&G 9500 Enhanced GOM Contracted PEMEX Pacesetter - --------------------------------------------------------------------------------------------------------------- Ocean Yorktown 2,850' F&G SS-2000 GOM Contracted PEMEX - --------------------------------------------------------------------------------------------------------------- - --------------------------------------------------------------------------------------------------------------- AFRICA - --------------------------------------------------------------------------------------------------------------- Ocean Nomad 1,200' Aker H-3 Mobe to Contracted Vaalco/SASOL Guinea Bissau - --------------------------------------------------------------------------------------------------------------- Ocean Patriot 1,500' Bingo 3000 South Africa Contracted PetroSA - --------------------------------------------------------------------------------------------------------------- NORTH SEA - --------------------------------------------------------------------------------------------------------------- Ocean Guardian 1,500' Earl & Wright Sedco North Sea Contracted Shell 711 Series - --------------------------------------------------------------------------------------------------------------- Ocean Princess 1,500' Aker H-3 North Sea Contracted Talisman - --------------------------------------------------------------------------------------------------------------- Ocean Vanguard 1,500' Bingo 3000 North Sea Idle DODI - --------------------------------------------------------------------------------------------------------------- AUSTRALASIA - --------------------------------------------------------------------------------------------------------------- Ocean Bounty 1,500' Victory Class Australia Contracted NZOP - --------------------------------------------------------------------------------------------------------------- Ocean Epoch 1,640' Korkut Australia Contracted Santos - --------------------------------------------------------------------------------------------------------------- Ocean General 1,640' Korkut Vietnam Contracted VRJ Petroleum - --------------------------------------------------------------------------------------------------------------- Ocean Baroness 7,000' Victory Class Indonesia Contracted Unocal - --------------------------------------------------------------------------------------------------------------- Ocean Rover 7,000' Victory Class Singapore Contracted Murphy - --------------------------------------------------------------------------------------------------------------- 2

BRAZIL - --------------------------------------------------------------------------------------------------------------- Ocean Yatzy 3,300' DP DYVI Super Yatzy Brazil Contracted Petrobras - --------------------------------------------------------------------------------------------------------------- Ocean Winner 3,500' Aker H-3 Brazil Contracted Petrobras - --------------------------------------------------------------------------------------------------------------- Ocean Alliance 5,000' Alliance Class Brazil Contracted Petrobras - --------------------------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - --------------------------------------------------------------------------------------------------------------- Ocean Clipper 7,500' DP Fluor/Mitsubishi Brazil Contracted Petrobras - --------------------------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - --------------------------------------------------------------------------------------------------------------- Ocean Sovereign 250' Independent Leg Indonesia Contracted Amerada Hess Cantilever - --------------------------------------------------------------------------------------------------------------- Ocean Heritage 300' Independent Leg Mobe to Ecuador Contracted Noble Energy Cantilever - --------------------------------------------------------------------------------------------------------------- COLD STACKED (5) - --------------------------------------------------------------------------------------------------------------- Ocean Liberator 600' Aker H-3 S. Africa Cold Stacked DODI - --------------------------------------------------------------------------------------------------------------- Ocean Champion 250' Mat Slot GOM Cold Stacked DODI - --------------------------------------------------------------------------------------------------------------- Ocean Endeavor 2,000' Victory Class GOM Cold Stacked DODI - --------------------------------------------------------------------------------------------------------------- Ocean Voyager 3,200' Victory Class GOM Cold Stacked DODI - --------------------------------------------------------------------------------------------------------------- Ocean New Era 1,500' Korkut GOM Cold Stacked DODI - --------------------------------------------------------------------------------------------------------------- NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico ** TABLE CONTINUED ** 3

RIG NAME CURRENT TERM DAYRATE (000S) START DATE - ------------------------------------------------------------------------------------ DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ------------------------------------------------------------------------------------ Ocean Quest one well mid 40's late April 2004 - ------------------------------------------------------------------------------------ Ocean Star - - - - ------------------------------------------------------------------------------------ Ocean America - - - - ------------------------------------------------------------------------------------ Ocean Valiant second of three wells plus high 50's late Dec. 2003 option - ------------------------------------------------------------------------------------ Ocean Victory one well mid 60's mid March 2004 - ------------------------------------------------------------------------------------ Ocean Confidence five-year term 170's early Jan. 2001 - ------------------------------------------------------------------------------------ DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - ------------------------------------------------------------------------------------ Ocean Concord one well plus option high 30's early April 2004 - ------------------------------------------------------------------------------------ Ocean Lexington one well plus option high 40's late March 2004 - ------------------------------------------------------------------------------------ Ocean Saratoga - - - - ------------------------------------------------------------------------------------ DOMESTIC JACKUPS (11) - ------------------------------------------------------------------------------------ Ocean Crusader one well mid 20's late Dec. 2003 - ------------------------------------------------------------------------------------ Ocean Drake one well plus option high 20's early May 2004 - ------------------------------------------------------------------------------------ Ocean Columbia one well plus option low 30's late April 2004 - ------------------------------------------------------------------------------------ Ocean Spartan one well high 20's late Nov. 2003 - ------------------------------------------------------------------------------------ Ocean Spur one well mid 30's early April 2004 - ------------------------------------------------------------------------------------ Ocean King one well plus option high 30's mid Jan. 2004 - ------------------------------------------------------------------------------------ Ocean Nugget one well plus option low 30's late April 2004 - ------------------------------------------------------------------------------------ Ocean Summit 60 day extension mid 30's early March 2004 - ------------------------------------------------------------------------------------ Ocean Warwick one well plus option mid 30's early April 2004 - ------------------------------------------------------------------------------------ Ocean Titan first of two wells plus low 40's late March 2004 option - ------------------------------------------------------------------------------------ Ocean Tower one well mid 30's late March 2004 - ------------------------------------------------------------------------------------ 1

- ------------------------------------------------------------------------------------ INTERNATIONAL SEMISUBMERSIBLES (17) - ------------------------------------------------------------------------------------ MEXICO - ------------------------------------------------------------------------------------ Ocean Ambassador four year term work mid 50's late July 2003 - ------------------------------------------------------------------------------------ Ocean Whittington four year term work low 60's late July 2003 - ------------------------------------------------------------------------------------ Ocean Worker four year term work high 60's mid Aug. 2003 - ------------------------------------------------------------------------------------ Ocean Yorktown four year term work mid 40's late Oct. 2003 - ------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------ AFRICA - ------------------------------------------------------------------------------------ Ocean Nomad first of three wells plus high 40's early May 2004 option - ------------------------------------------------------------------------------------ Ocean Patriot one well mid 50's early April 2004 - ------------------------------------------------------------------------------------ NORTH SEA - ------------------------------------------------------------------------------------ Ocean Guardian one year high 40's late March 2004 - ------------------------------------------------------------------------------------ Ocean Princess second of two wells plus low 50's mid Feb. 2004 option - ------------------------------------------------------------------------------------ Ocean Vanguard _ _ _ - ------------------------------------------------------------------------------------ AUSTRALASIA - ------------------------------------------------------------------------------------ Ocean Bounty two wells plus two low 70's late March 2004 options wells - ------------------------------------------------------------------------------------ Ocean Epoch Exeter/Mutineer mid 60's mid Jan. 2004 development plus option - ------------------------------------------------------------------------------------ Ocean General one assignment well mid 50's late April 2004 - ------------------------------------------------------------------------------------ Ocean Baroness 180 day option 110's late April 2004 - ------------------------------------------------------------------------------------ Ocean Rover fourth option well 110s late Dec. 2003 - ------------------------------------------------------------------------------------ 2

BRAZIL - ------------------------------------------------------------------------------------ Ocean Yatzy 700 day extension mid 70's early Nov. 2003 - ------------------------------------------------------------------------------------ Ocean Winner 700 day extension mid 50's early April 2004 - ------------------------------------------------------------------------------------ Ocean Alliance four-year contract 110's early Sept. 2000 - ------------------------------------------------------------------------------------ INTERNATIONAL DRILLSHIPS (1) - ------------------------------------------------------------------------------------ Ocean Clipper 700 day extension low 100's early Jan. 2003 - ------------------------------------------------------------------------------------ INTERNATIONAL JACKUPS (2) - ------------------------------------------------------------------------------------ Ocean Sovereign two wells plus two option high 30's early April 2004 wells - ------------------------------------------------------------------------------------ Ocean Heritage second of three wells plus mid 50's mid Feb. 2004 options - ------------------------------------------------------------------------------------ COLD STACKED (5) - ------------------------------------------------------------------------------------ Ocean Liberator - - - - ------------------------------------------------------------------------------------ Ocean Champion - - - - ------------------------------------------------------------------------------------ Ocean Endeavor - - - - ------------------------------------------------------------------------------------ Ocean Voyager - - - - ------------------------------------------------------------------------------------ Ocean New Era - - - - ------------------------------------------------------------------------------------ NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico ** TABLE CONTINUED ** 3

RIG NAME EST. END DATE FUTURE CONTRACT AND OTHER INFORMATION - --------------------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - --------------------------------------------------------------------------------------------------------- Ocean Quest early June 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Star - available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean America - 90 day upgrade/survey ending late May 2004; available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Valiant early Aug. 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Victory mid May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Confidence early Jan. 2006 available; actively marketing. - --------------------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - --------------------------------------------------------------------------------------------------------- Ocean Concord late May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Lexington late May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Saratoga - one well with LLOG in low 40's beginning late May and ending late June 2004, available; actively marketing. - --------------------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - --------------------------------------------------------------------------------------------------------- Ocean Crusader mid May 2004 two wells plus option with Stone in high 20's beginning mid May and ending early Aug. 2004, available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Drake early June 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Columbia late May 2004 one well plus option with Kerr-McGee in low 30's beginning late May and ending late July 2004, available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Spartan mid May 2004 one well plus option with LLOG in low 30's beginning mid May and ending late June 2004, available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Spur mid May 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean King mid May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Nugget mid May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Summit mid May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Warwick mid June 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Titan late June 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Tower late May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- 1

- --------------------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (17) - --------------------------------------------------------------------------------------------------------- MEXICO - --------------------------------------------------------------------------------------------------------- Ocean Ambassador mid Dec. 2007 available. - --------------------------------------------------------------------------------------------------------- Ocean Whittington early Oct. 2006 available. - --------------------------------------------------------------------------------------------------------- Ocean Worker late July 2007 available. - --------------------------------------------------------------------------------------------------------- Ocean Yorktown mid July 2007 available. - --------------------------------------------------------------------------------------------------------- - --------------------------------------------------------------------------------------------------------- AFRICA - --------------------------------------------------------------------------------------------------------- Ocean Nomad early Sept. 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Patriot late May 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- NORTH SEA - --------------------------------------------------------------------------------------------------------- Ocean Guardian late March 2005 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Princess mid Aug. 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Vanguard _ one well with Talisman in mid 30's beginning mid May in U.K. sector of North Sea, followed by optional intervention well at adjusted rate, followed by one well in low 60's and ending mid November 2004; LOI for for one well in Norway in low 140's beginning mid Nov. 2004 and ending mid Feb. 2005, available; actively marketing. - --------------------------------------------------------------------------------------------------------- AUSTRALASIA - --------------------------------------------------------------------------------------------------------- Ocean Bounty late May 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Epoch mid Nov. 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean General late May 2004 five completion options in mid 50's with P.V.E&P beginning late May and ending mid Sept. 2004, available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Baroness early Oct. 2004 available; actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Rover mid May 2004 two firm wells with Murphy in 110's beginning mid May and ending mid Aug. 2004, followed by 11 option extensions. First of the two firm wells is to be sublet to Amerada Hess in 110's, available; actively marketing. - --------------------------------------------------------------------------------------------------------- 2

BRAZIL - --------------------------------------------------------------------------------------------------------- Ocean Yatzy mid Oct. 2005 survey complete, preparing to move on location; available. - --------------------------------------------------------------------------------------------------------- Ocean Winner mid March 2006 available - --------------------------------------------------------------------------------------------------------- Ocean Alliance early Sept. 2004 available - --------------------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - --------------------------------------------------------------------------------------------------------- Ocean Clipper early March 2006 available. - --------------------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - --------------------------------------------------------------------------------------------------------- Ocean Sovereign late June 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- Ocean Heritage mid June 2004 available, actively marketing. - --------------------------------------------------------------------------------------------------------- COLD STACKED (5) - --------------------------------------------------------------------------------------------------------- Ocean Liberator - Cold stacked Nov. '02. - --------------------------------------------------------------------------------------------------------- Ocean Champion - Cold Stacked Feb. '02. - --------------------------------------------------------------------------------------------------------- Ocean Endeavor - Cold stacked March '02. - --------------------------------------------------------------------------------------------------------- Ocean Voyager - Cold stacked March '02. - --------------------------------------------------------------------------------------------------------- Ocean New Era - Cold stacked Dec. '02. - --------------------------------------------------------------------------------------------------------- NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico ** TABLE COMPLETE ** 3