.
.
.
DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF NOVEMBER 15, 2004
<Table>
<Caption>
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 Contracted Kerr-McGee
- -----------------------------------------------------------------------------------
Ocean America 5,500' Ocean Odyssey GOM Contracted Mariner
- -----------------------------------------------------------------------------------
Ocean Valiant 5,500' Ocean Odyssey GOM Contracted ENI
- -----------------------------------------------------------------------------------
Ocean Victory 5,500' Victory Class GOM Contracted W&T Offsshore
- -----------------------------------------------------------------------------------
Ocean Confidence 7,500' DP Aker H- GOM Contracted BP
3.2 Modified
- -----------------------------------------------------------------------------------
DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES(4)
- -----------------------------------------------------------------------------------
Ocean Voyager 2,000' Victory Class GOM DODI --
- -----------------------------------------------------------------------------------
Ocean Concord 2,200' F&G SS-2000 GOM Contracted Kerr-McGee
- -----------------------------------------------------------------------------------
Ocean Lexington 2,200' F&G SS-2000 GOM Contracted Walter Oil & Gas
- -----------------------------------------------------------------------------------
Ocean Saratoga 2,200' F&G SS-2000 GOM Contracted LLOG
- -----------------------------------------------------------------------------------
</Table>
<Table>
<Caption>
EST.
RIG CURRENT DAYRATE START END
NAME TERM (000S) DATE DATE FUTURE CONTRACT AND OTHER INFORMATION
- ---- ------------------ --------- ---------------- --------------- --------------------------------------------
DOMESTIC DEEPWATER SEMISUBMERSIBLES(6)
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Quest one well low 50's early Sept. 2004 late Nov. 2004 One well plus option with Pogo in mid 70's
beginning late Nov. and ending early Jan.
2005; followed by LOI for one well in low
100's beginning early Jan. 2005 and ending
early April 2005; followed by LOI for one
well in high 110's beginning early April and
ending early June 2005. Available; actively
marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Star fourth of four low 60's early June 2004 mid Nov. 2004 220 day extension with Kerr-McGee in high
wells 70's beginning mid Nov. 2004 and ending late
June 2005; followed by 90 day term extension
plus option with Kerr-McGee in low 140's
beginning late June 2005 and ending late
Sept. 2005. Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean America one well extension mid 80's late Oct. 2004 mid Jan. 2005 One well extension plus option with Mariner
in mid 110's beginning mid Jan. 2005 and
ending mid Feb. 2005; followed by two wells
plus option with Mariner in low 130's
beginning mid Feb. and ending late May 2005.
Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Valiant third of three high 50's late Dec. 2003 mid Dec. 2004 One well plus options with Kerr-McGee in mid
wells plus option 80's beginning mid Dec. and ending early
Feb. 2005; followed by one well with
Kerr-McGee in high 90's beginning early Feb.
2005 and ending mid April 2005, followed by
one well plus options with Kerr-McGee in low
130's beginning mid April and ending late
July 2005. Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Victory two wells mid 70's mid Aug. 2004 late Jan. 2005 LOI for one well plus option in mid 90's
beginnning late Jan. 2005 and ending late
March 2005. LOI for two wells in low 130's
beginning late March and ending mid July
2005. Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Confidence five-year term 170's early Jan. 2001 early Jan. 2006 Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES(4)
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Voyager -- -- -- -- Reactivating. One well with Murphy in low
70's beginning mid Dec. 2004 and ending
early Feb. 2005. Available; actively
marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Concord one well plus mid 50's early Oct. 2004 late Dec. 2004 One well with ENI in mid 50's beginning late
option Dec. 2004 and ending late Feb. 2005;
followed by one well for Kerr-McGee in upper
50's beginning late Feb. and ending late
Mar. 2005; followed by one well plus option
with Kerr-McGee in mid 70's beginning late
Mar. and ending late May 2005. Available;
actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Lexington one well high 40's early Sept. 2004 mid March 2005 Three well extension with Walter beginning
in early Sept. and ending in mid Dec. 2004.
Rate for first well in mid 40's, second and
third wells in upper 40's. Three additional
extension wells with Walter beginning in mid
Dec. 2004 and ending mid March 2005. Rate
for first and second wells in mid 50s with
third well in low 60s. Available; actively
marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Saratoga one well low 50's late Oct. 2004 late Nov. 2004 Three well extension with LLOG in mid 60's
beginning late Nov. 2004 and ending mid
April 2005. Available; actively marketing.
</Table>
DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF NOVEMBER 15, 2004
<Table>
<Caption>
RIG
NAME WD DESIGN LOCATION STATUS* OPERATOR
- ---- ---- --------------- -------- ---------- -------------------
DOMESTIC JACKUPS (12)
- --------------------------------------------------------------------------------------
Ocean Crusader 200' Mat Cantilever GOM Contracted Walter Oil & Gas
- --------------------------------------------------------------------------------------
Ocean Drake 200' Mat Cantilever GOM Contracted Chevron/Texaco
- --------------------------------------------------------------------------------------
Ocean Champion 250' Mat Slot GOM Contracted Millennium
- --------------------------------------------------------------------------------------
Ocean Columbia 250' Independent Leg GOM Contracted ADTI/Kerr-McGee
Cantilever
- --------------------------------------------------------------------------------------
Ocean Spartan 300' Independent Leg GOM Contracted LLOG
Cantilever
- --------------------------------------------------------------------------------------
Ocean Spur 300' Independent Leg GOM Contracted Mariner
Cantilever
- --------------------------------------------------------------------------------------
Ocean King 300' Independent Leg GOM Contracted Houston Exploration
Cantilever
- --------------------------------------------------------------------------------------
Ocean Nugget 300' Independent Leg GOM Contracted ADTI/Mission
Cantilever
- --------------------------------------------------------------------------------------
Ocean Summit 300' Independent Leg GOM Contracted LLOG
Cantilever
- --------------------------------------------------------------------------------------
Ocean Warwick 300' Independent Leg GOM Shipyard DODI
Cantilever
- --------------------------------------------------------------------------------------
Ocean Titan 350' Independent Leg GOM Contracted Stone Energy
Cantilever
- --------------------------------------------------------------------------------------
Ocean Tower 350' Independent Leg GOM Contracted W&T Offshore
Cantilever
- --------------------------------------------------------------------------------------
</Table>
<Table>
<Caption>
EST.
RIG CURRENT DAYRATE START END
NAME TERM (000S) DATE DATE FUTURE CONTRACT AND OTHER INFORMATION
- ---- ----------------------- --------- ---------------- --------------- --------------------------------------
DOMESTIC JACKUPS (12)
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Crusader second of two wells mid 30's early Nov. 2004 early Dec. 2004 Two well extension plus option with
plus option Walter in high 30's beginning early
Dec. 2004 and ending early Feb. 2005.
Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Drake 60 day term extension high 30's early Nov. 2004 early Jan. 2005 Available; actively marketing.
plus option
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Champion one well mid 30's early Sept. 2004 late Nov. 2004 Two wells plus option with Energy
Partners in mid 30's beginning late
Nov. and late Jan. 2005. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Columbia one well plus option mid 30's mid Nov. 2004 mid Dec. 2004 Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Spartan two wells plus option high 30's early Sept. 2004 early Jan. 2005 One well extension with LLOG in mid
40's beginning early Jan. and ending
early March 2005. Available; actively
marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Spur two wells high 30's early Sept. 2004 mid Dec. 2004 Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean King two wells mid 40s late Aug. 2004 mid Dec. 2004 Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Nugget one well plus option low 40's mid Nov. 2004 mid Dec. 2004 Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Summit three wells plus option high 30's early Sept. 2004 early Jan. 2005 Two wells with LLOG in mid 40's
beginning early Jan. and ending mid
Mar. 2005. Available; actively
marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Warwick -- -- -- -- In shipyard for repair of damage due to
Hurricane Ivan.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Titan one well plus option low 50's early Nov. 2004 mid Dec. 2004 One well plus options with BHP in mid
50's beginning mid Dec. 2004 and ending
mid Apr. 2005. Available; actively
marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Tower two wells mid 40's late Oct. 2004 mid Dec. 2004 One well plus option with ChevronTexaco
in mid 50's beginning late Dec. 2004
and ending mid May 2005. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
</Table>
DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF NOVEMBER 15, 2004
<Table>
<Caption>
RIG
NAME WD DESIGN LOCATION STATUS* OPERATOR
- ---- ------ ------------------- --------- ---------- ------------
INTERNATIONAL SEMISUBMERSIBLES (17)
- --------------------------------------------------------------------------------------
MEXICO
- --------------------------------------------------------------------------------------
Ocean Ambassador 1,100' Bethlehem SS-2000 GOM Contracted PEMEX
- --------------------------------------------------------------------------------------
Ocean 1,500' Aker H-3 GOM Contracted PEMEX
Whittington
- --------------------------------------------------------------------------------------
Ocean Worker 3,500' F&G 9500 Enhanced GOM Contracted PEMEX
Pacesetter
- --------------------------------------------------------------------------------------
Ocean Yorktown 2,850' F&G SS-2000 GOM Contracted PEMEX
- --------------------------------------------------------------------------------------
NORTH SEA
- --------------------------------------------------------------------------------------
Ocean Nomad 1,200' Aker H-3 North Sea -- 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 Contracted ENI
- --------------------------------------------------------------------------------------
AUSTRALASIA
- --------------------------------------------------------------------------------------
Ocean Bounty 1,500' Victory Class Australia Contracted OMV
- --------------------------------------------------------------------------------------
Ocean Patriot 1,500' Bingo 3000 Australia Contracted Apache
- --------------------------------------------------------------------------------------
Ocean Epoch 1,640' Korkut Australia Contracted Santos
- --------------------------------------------------------------------------------------
Ocean General 1,640' Korkut Vietnam Contracted PVE&P
- --------------------------------------------------------------------------------------
Ocean Baroness 7,000' Victory Class Indonesia Contracted Unocal
- --------------------------------------------------------------------------------------
Ocean Rover 7,000' Victory Class Malaysia Contracted Amerada Hess
- --------------------------------------------------------------------------------------
</Table>
<Table>
<Caption>
EST.
RIG CURRENT DAYRATE START END
NAME TERM (000S) DATE DATE FUTURE CONTRACT AND OTHER INFORMATION
- ---- ----------------------- --------- ---------------- --------------- -------------------------------------
INTERNATIONAL SEMISUBMERSIBLES (17)
- -----------------------------------------------------------------------------------------------------------------------------------
MEXICO
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Ambassador four year term work mid 50's late July 2003 mid Dec. 2007 Available.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean four year term work low 60's late July 2003 early Oct. 2006 Available.
Whittington
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Worker four year term work high 60's mid Aug. 2003 late July 2007 Available.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Yorktown four year term work mid 40's late Oct. 2003 mid July 2007 Available.
- -----------------------------------------------------------------------------------------------------------------------------------
NORTH SEA
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Nomad -- -- -- -- One year program with Talisman in U.K.
North Sea in low 80's beginning early
Jan. 2005 and ending early Jan. 2006.
Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Guardian one year high 40's late March 2004 late March 2005 LOI for one year program in U.K. North
Sea in low 80's beginning late Mar.
2005 and ending late Mar. 2006.
Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Princess three wells plus option low 60's early Oct. 2004 late Nov. 2004 One year extension in U.K. North Sea
in low 80's beginning late Nov. 2004
and ending late Nov. 2005. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Vanguard one well low 140's early Oct. 2004 late Dec. 2005 LOI for one year program in Norway in
low 140's beginning in late Dec. 2004
and ending in late Dec. 2005.
Available; actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
AUSTRALASIA
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Bounty three wells mid 70's early Sept. 2004 mid Jan. 2005 LOI for one well plus option in mid
70's beginning in mid Jan. and ending
in early Feb. 2005; followed by one
well plus option with Hardman in low
80's beginning in early Feb. 2005 and
ending late Feb. 2005. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Patriot two wells high 70's early Nov. 2004 mid Dec. 2004 Second of two wells with Bass Straits
beginning mid Dec. 2004 and ending mid
Jan. 2005. LOI for two wells beginning
mid Jan. and ending mid Feb. Two wells
plus option with Santos beginning mid
Feb. and ending late April. LOI for
one well plus three options beginning
late April and ending early June 2005.
All wells in high 70's. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Epoch Exeter/Mutineer mid 60's mid Jan. 2004 late Jan. 2005 Available; actively marketing.
development plus option
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean General five completion options mid 50's mid June 2004 mid Nov. 2004 Two week UWILD survey; followed by two
wells with KNOC in Korea plus
mobe/demobe in high 60's beginning
late Nov. and ending late Mar. 2005;
followed by one well plus one option
plus demobe with KNOC in Viet Nam in
mid 50's beginning mid Mar. and ending
late May 2005. Available; actively
marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Baroness 180 day option 110's early Nov. 2004 early Dec. 2004 180 day extension in mid 130's
beginning early Dec. 2004 and ending
late May 2005. Available; actively
marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
Ocean Rover second of two low 110's early Nov. 2004 mid Dec. 2004 Second option well with Murphy
assignment wells declared in low 120's beginning mid
Dec. 2004 and ending mid Jan. 2005.
Option wells three to six exercised in
mid 120's beginning mid Jan. and
ending early July 2005. Available;
actively marketing.
- -----------------------------------------------------------------------------------------------------------------------------------
</Table>
DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF NOVEMBER 15, 2004
<Table>
<Caption>
RIG
NAME WD DESIGN LOCATION STATUS* OPERATOR
- ---- ------ ------------------- ---------- ------------ ------------
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 Bangladesh Contracted Cairn Energy
Cantilever
- -----------------------------------------------------------------------------------------
Ocean Heritage 300' Independent Leg India Contracted Cairn Energy
Cantilever
- -----------------------------------------------------------------------------------------
COLD STACKED(3)
- -----------------------------------------------------------------------------------------
Ocean Liberator 600' Aker H-3 S. Africa Cold Stacked DODI
- -----------------------------------------------------------------------------------------
Ocean Endeavor 2,000' Victory Class GOM Cold Stacked DODI
- -----------------------------------------------------------------------------------------
Ocean New Era 1,500' Korkut GOM Cold Stacked DODI
- -----------------------------------------------------------------------------------------
</Table>
<Table>
<Caption>
EST.
RIG CURRENT DAYRATE START END
NAME TERM (000S) DATE DATE FUTURE CONTRACT AND OTHER INFORMATION
- ---- ----------------------- --------- ---------------- ---------------- --------------------------------------
BRAZIL
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Yatzy 700 day extension mid 70's early Nov. 2003 mid Oct. 2005 Available.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Winner 700 day extension mid 50's early April 2004 mid March 2006 Available.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Alliance one year extension high 90's early Sept. 2004 early Sept. 2005 Available.
- ------------------------------------------------------------------------------------------------------------------------------------
INTERNATIONAL DRILLSHIPS(1)
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Clipper 700 day extension low 100's early Jan. 2003 early March 2006 Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
INTERNATIONAL JACKUPS(2)
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Sovereign three wells plus option low 60's mid Nov. 2004 early May 2005 Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Heritage six wells plus options low 60's early Nov. 2004 mid May 2005 Available; actively marketing.
- ------------------------------------------------------------------------------------------------------------------------------------
COLD STACKED(3)
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Liberator -- -- -- -- Cold stacked Nov. '02.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean Endeavor -- -- -- -- Cold stacked March '02.
- ------------------------------------------------------------------------------------------------------------------------------------
Ocean New Era -- -- -- -- Cold stacked Dec. '02.
- ------------------------------------------------------------------------------------------------------------------------------------
</Table>
NOTES:
* GENERALLY, RIG UTILIZATION RATES APPROACH 95-98% DURING CONTRACTED PERIODS;
HOWEVER, UTILIZATION RATES CAN BE ADVERSELY IMPACTED BY ADDITIONAL DOWNTIME DUE
TO UNSCHEDULED REPAIRS AND MAINTENANCE,
WEATHER CONDITIONS AND OTHER FACTORS.
GOM = Gulf of Mexico