EXHIBIT 99.1 DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF JANUARY 6, 2004 RIG NAME WD DESIGN LOCATION STATUS* OPERATOR - ------------------------------------------------------------------------------------------------------------ DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ------------------------------------------------------------------------------------------------------------ Ocean Quest 3,500' Victory Class GOM Contracted Noble Energy - ------------------------------------------------------------------------------------------------------------ Ocean Star 5,500' Victory Class GOM Idle DODI - ------------------------------------------------------------------------------------------------------------ Ocean America 5,500' Ocean Odyssey GOM Contracted W&T Offshore - ------------------------------------------------------------------------------------------------------------ Ocean Valiant 5,500' Ocean Odyssey GOM Contracted ENI - ------------------------------------------------------------------------------------------------------------ Ocean Victory 5,500' Victory Class GOM Contracted Spinnaker Exploration - ------------------------------------------------------------------------------------------------------------ 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 Taylor Energy - ------------------------------------------------------------------------------------------------------------ Ocean Lexington 2,200' F&G SS-2000 GOM Contracted Walter Oil & Gas - ------------------------------------------------------------------------------------------------------------ Ocean Saratoga 2,200' F&G SS-2000 GOM Contracted LLOG - ------------------------------------------------------------------------------------------------------------ DOMESTIC JACKUPS (11) - ------------------------------------------------------------------------------------------------------------ Ocean Crusader 200' Mat Cantilever GOM Contracted Stone Energy - ------------------------------------------------------------------------------------------------------------ Ocean Drake 200' Mat Cantilever GOM Contracted Chevron/Texaco - ------------------------------------------------------------------------------------------------------------ Ocean Columbia 250' Independent Leg GOM Contracted ADTI/Helis Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Spartan 300' Independent Leg GOM Contracted LLOG Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Spur 300' Independent Leg GOM Idle DODI Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean King 300' Independent Leg GOM Contracted BP America Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Nugget 300' Independent Leg GOM Contracted Taylor Energy Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Summit 300' Independent Leg GOM Contracted Chevron/Texaco Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Warwick 300' Independent Leg GOM Contracted Murphy Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Titan 350' Independent Leg Slot GOM Shipyard for cantilever DODI upgrade - ------------------------------------------------------------------------------------------------------------ Ocean Tower 350' Independent Leg GOM Contracted Denbury 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 Patriot 1,500' Bingo 3000 South Africa Contracted Forest Oil - ------------------------------------------------------------------------------------------------------------ NORTH SEA - ------------------------------------------------------------------------------------------------------------ Ocean Nomad 1,200' Aker H-3 North Sea Idle DODI - ------------------------------------------------------------------------------------------------------------ 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 Inpex - ------------------------------------------------------------------------------------------------------------ Ocean Epoch 1,640' Korkut Australia Contracted Santos - ------------------------------------------------------------------------------------------------------------ Ocean General 1,640' Korkut Vietnam Contracted P.V.E&P - ------------------------------------------------------------------------------------------------------------ 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 Santos Cantilever - ------------------------------------------------------------------------------------------------------------ Ocean Heritage 300' Independent Leg Indonesia Idle DODI 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 - ------------------------------------------------------------------------------------------------------------ ** TABLE CONTINUED ** NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico 3 RIG NAME CURRENT TERM DAYRATE (000S) START DATE - ------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ------------------------------------------------------------------------------- Ocean Quest one well plus option high 40's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Star - - - - ------------------------------------------------------------------------------- Ocean America one well extension plus mid 60's late Nov. 2003 option - ------------------------------------------------------------------------------- Ocean Valiant three wells plus option high 50's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Victory one well low 40s late Nov. 2003 - ------------------------------------------------------------------------------- Ocean Confidence five-year term 170's early Jan. 2001 - ------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - ------------------------------------------------------------------------------- Ocean Concord one well plus option mid 40's early Jan. 2004 - ------------------------------------------------------------------------------- Ocean Lexington first of two wells plus high 30's late Nov. 2003 option - ------------------------------------------------------------------------------- Ocean Saratoga second of two wells low 40's early Nov. 2003 - ------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ------------------------------------------------------------------------------- Ocean Crusader one well plus option mid 20's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Drake final well mid 20's mid Oct. 2003 - ------------------------------------------------------------------------------- Ocean Columbia one well upper 20's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Spartan one well plus option upper 20's late Nov. 2003 - ------------------------------------------------------------------------------- Ocean Spur - - - - ------------------------------------------------------------------------------- Ocean King multiple wells low 30's early April 2003 - ------------------------------------------------------------------------------- Ocean Nugget one well low 30's mid Sept. 2003 - ------------------------------------------------------------------------------- Ocean Summit two wells plus option mid 30's late Nov. 2003 - ------------------------------------------------------------------------------- Ocean Warwick one well plus option upper 20's late Sept. 2003 - ------------------------------------------------------------------------------- Ocean Titan - - - - ------------------------------------------------------------------------------- Ocean Tower third of four wells plus mid 30's late Aug. 2003 option - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- 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 upper 60's mid Aug. 2003 - ------------------------------------------------------------------------------- Ocean Yorktown four year term work mid 40's late Oct. 2003 - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- AFRICA - ------------------------------------------------------------------------------- Ocean Patriot 100 days plus option mid 50's mid Sept. 2003 - ------------------------------------------------------------------------------- NORTH SEA - ------------------------------------------------------------------------------- Ocean Nomad - - - - ------------------------------------------------------------------------------- Ocean Guardian one year plus one year low 50's early April 2003 option - ------------------------------------------------------------------------------- Ocean Princess first option declared plus low 40's mid Nov. 2003 option - ------------------------------------------------------------------------------- Ocean Vanguard _ _ _ - ------------------------------------------------------------------------------- AUSTRALASIA - ------------------------------------------------------------------------------- Ocean Bounty third of three wells low 70's mid June 2003 - ------------------------------------------------------------------------------- Ocean Epoch one well (option exercised) low 60's early Dec. 2003 - ------------------------------------------------------------------------------- Ocean General one well plus one well and mid 50's mid Nov. 2003 five completion options - ------------------------------------------------------------------------------- Ocean Baroness 400 days plus option 110's late March 2003 - ------------------------------------------------------------------------------- Ocean Rover First of three option wells 110s late Dec. 2003 - ------------------------------------------------------------------------------- 2 BRAZIL - ------------------------------------------------------------------------------- Ocean Yatzy end of primary term Nov. 5, mid 70' early Nov. 1998 2003, completing well - ------------------------------------------------------------------------------- Ocean Winner one year extension low 60's early Nov. 2002 - ------------------------------------------------------------------------------- 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 one well plus two option high 30's mid Nov. 2003 - ------------------------------------------------------------------------------- Ocean Heritage - - - - ------------------------------------------------------------------------------- COLD STACKED (5) - ------------------------------------------------------------------------------- Ocean Liberator - - - - ------------------------------------------------------------------------------- Ocean Champion - - - - ------------------------------------------------------------------------------- Ocean Endeavor - - - - ------------------------------------------------------------------------------- Ocean Voyager - - - - ------------------------------------------------------------------------------- Ocean New Era - - - - ------------------------------------------------------------------------------- ** TABLE CONTINUED ** NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico 3 RIG NAME EST. END DATE FUTURE CONTRACT AND OTHER INFORMATION - ------------------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ------------------------------------------------------------------------------------------------------- Ocean Quest late Feb. 2004 available; actively marketing - ------------------------------------------------------------------------------------------------------- Ocean Star - available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean America mid Feb. 2004 90 day upgrade/survey likely beginning mid 1st Qtr 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Valiant late July 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Victory mid Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Confidence early Jan. 2006 available; actively marketing. - ------------------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - ------------------------------------------------------------------------------------------------------- Ocean Concord early Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Lexington early Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Saratoga early Feb. 2004 One well plus option with LLOG in low 40's beginning early Feb. 2004 and ending mid March 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ------------------------------------------------------------------------------------------------------- Ocean Crusader early March 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Drake mid Jan. 2004 One well plus option with Newfield in mid 20's beginning mid Jan. 2004 and ending early Feb. 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Columbia late Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Spartan mid Jan. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Spur - Rig undergoing leg repair; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean King mid Jan. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Nugget mid Jan. 2004 Six month extension + option in low 30's ending early June 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Summit late Jan. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Warwick mid Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Titan - Cantilever upgrade ending mid Jan. 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Tower late Feb. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------- 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 Patriot late Jan. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- NORTH SEA - ------------------------------------------------------------------------------------------------------- Ocean Nomad - Three wells plus option in Guinea Bissau with Premier/Vaalco in upper 40s beginning mid Jan. 2004 and ending late June 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Guardian late March 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Princess mid Feb. 2004 Two wells plus option in North Sea with Talisman in mid 40's beginning mid Feb. 2004 and ending mid June 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Vanguard _ available; actively marketing. - ------------------------------------------------------------------------------------------------------- AUSTRALASIA - ------------------------------------------------------------------------------------------------------- Ocean Bounty mid Feb. 2004 Two wells plus two option wells with NZOP in low 70's beginning mid Feb. 2004 and ending late May 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Epoch mid Jan. 2004 Exeter/Mutineer development work with Santos in mid 60's beginning mid Jan. 2004 and ending mid Nov. 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean General late Jan. 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Baroness early May 2004 available; actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Rover early April 2004 actively marketing. - ------------------------------------------------------------------------------------------------------- BRAZIL - ------------------------------------------------------------------------------------------------------- Ocean Yatzy late Jan. 2004 Scheduled for survey beginning early 1st Qtr. 2004. Estimated downtime 30 days; 700 day extension in mid 70's beginning in early Nov. 2003 and ending early Oct. 2005; available. - ------------------------------------------------------------------------------------------------------- Ocean Winner late Feb. 2004 Scheduled for survey in 1st Qtr. '04. Estimated downtime 60 days. - ------------------------------------------------------------------------------------------------------- Ocean Alliance early Sept. 2004 Scheduled for survey in 1st Qtr. '04 Estimated downtime 60 days. - ------------------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - ------------------------------------------------------------------------------------------------------- Ocean Clipper mid Dec. 2005 available. - ------------------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - ------------------------------------------------------------------------------------------------------- Ocean Sovereign late Feb. 2004 Two wells plus two options with Amerada Hess in high 30's beginning late Feb. 2004 and ending late April 2004; available, actively marketing. - ------------------------------------------------------------------------------------------------------- Ocean Heritage - Three wells plus option in Ecuador with Noble Energy in mid 50's with 30-day mobe beginning mid Jan. 2004 and contract ending mid July 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. - ------------------------------------------------------------------------------------------------------- ** TABLE COMPLETE ** NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME. GOM = Gulf of Mexico 3