The document is a report on offshore decommissioning in the Gulf of Mexico in 2012-2013. It provides statistics on the number of platforms decommissioned from 2008-2011, finding that 2011 saw a record number decommissioned. It also estimates the size of the decommissioning market in the Gulf of Mexico to be between $1.5-$5.5 billion. Finally, it provides charts and maps showing the status and locations of platforms in the Gulf as of 2012.

1. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO
Gulf of Mexico Offshore Decommissioning Map 2012
www.decomworld.com/gomreport

2. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 2
Gulf of Mexico Offshore Decommissioning Map 2012 MISSISSIPPI
ALABAMA
GEORGIA
LOUISIANA
TEXAS
2011 was a record year for the number of platforms
decommissioned, and has exceeded all predictions.
The Gulf of Mexico oil and gas industry is clearly WEST CENTRAL EAST
FLORIDA
in a proactive mood for the decommissioning of
shelf assets. Previous years have been more
reactive, principally due to hurricane activity, which
had caused extensive damage to platforms and
associated infrastructure.
Percentage change in number of platforms Size of the decommissioning GOM Market
decommissioned 2008-2011
8%
7%
6%
5%
4%
3%
2%
1%
$3.5 - $5.5 billion $2 - $3.5 billion $1.5 - $2 billion
(The estimated total (The estimated cost to P&A and (The estimated cost to P&A
0% decommissioning market size) remove the 4,734 wells on expired and remove 3,515 T&A’d
2008 2009 2010 2011 leases to 15ft below mudline) wells to 15ft below mudline)

3. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 3
Level of decommissioning activity in 2011
19.9% 7.8% 6.1% 6.1% 4.8% 4.3%
Apache Corporation Chevron USA Inc McMoRan Energy XXI Maritech Energy Resource
Oil & Gas LLC GOM, LLC Resources, Inc Tech GOM Inc
4.3% 2.2% 2.2% 1.7% 1.3% 0.9% 38.5% 100%
Merit Energy Company LLC Stone Energy Forest Oil Energy Walter Union Oil Company Other
Corporation Corporation Partners Ltd Oil & Gas Corporation of California

4. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 4
Average platform decommissioning durations
1 day
50 ft
Braced
Caisson 4 Pile 6 Pile 8 Pile 4 Pile 4 Pile
Caisson
Platform type Water Depth (ft) Average duration to decommission (d)
Caisson 50 1-2
Braced Caisson 100 2
4 Pile 150 3
6 Pile 200 3 -7
8 Pile 200 4-7
4 Pile 400 5-7
4 Pile 500 6-7
The time, presented above, does not reflect the Permanent Plug & Abandonment (P&A) of wells, which is extremely
variable and dependent on number of wells, make-up, number of completions, reservoir depth, complexities etc.

5. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 5
Expired and T&A’d wells in Gulf of Mexico
Gulf of Mexico expired or terminated leases – borehole distribution by region
MISSISSIPPI
ALABAMA
GEORGIA
LOUISIANA
TEXAS
WEST CENTRAL EAST
FLORIDA
Condition West GOM Central GOM East GOM Other Total
Wells on Expired leases 1,026 3,659 5 44 4,734
T&A’d Wells 497 3,006 8 4 3,515
Total 1,523 6,665 13 48 8,249
% of Total 18.5% 80.8% 0.2% 0.6% 100%
Date source: BOEM

6. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 6
The Gulf of Mexico: status in 2012
Year Installed Decommissioned Remaining
Total % Change on Total % Change on Total % Change
remaining remaining
fleet fleet
2011 7082 0.5% 3829 6.6% 3249 -6.2%
2010 7065 0.7% 3602 5.8% 3463 -5.1%

7. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 7
Offshore Decommissioning Report, 2012-2013, Gulf of Mexico
❝
DecomWorld’s Offshore Decommissioning Report,
2012-2013, Gulf of Mexico presents a synopsis of the
GOM decommissioning market and will be particularly
valuable to Contractors planning for 2012 and beyond.
❝ The Decomworld 2012-13 report contains important
strategic insights into the decommissioning market
in the GOM. It is valuable for those seeking to gain
a greater understanding of the market and refine
❝ The Decomworld Gulf of Mexico Report 2012-13
provides a comprehensive analysis of the
decommissioning market and provides useful
information for operators and seasoned
The report provides good background information for their customer engagement strategies.” decommissioning executives.”
new entrants as well as the basis of further debate Win Thornton, Global Managing Consultant, Gunther Newcombe, VP Decommissioning,
for seasoned decommissioning specialists.” Decommissioning, WorleyParsons Group Global Projects Organisation, BP
Gary Siems, Decommissioning Manager, (Former Manager, International Decommissioning,
Stone Energy Chevron Environmental Management Company)
Biography of the author
Darren J. Morahan, Cougar Offshore LLC
Darren J. Morahan has utilized over 22 years of oil and gas engineering experience in creating this, his second report with
DecomWorld. He has undertaken projects with a range of operators, including consultancy services to BP decommissioning
group as their chosen Structural Authority on the decommissioning of shelf assets. Notable projects include the high-profile
reefing in place and toppling of EI322 P & D.

8. THE OFFSHORE DECOMMISSIONING REPORT 2012-2013, GULF OF MEXICO | PAGE 8
DecomWorld
Thank you for your interest in the decommissioning market in the Gulf of Mexico. DecomWorld hopes you found the
information extracted from The Offshore Decommissioning Report, 2012-2013, Gulf of Mexico interesting, but this is
only the beginning of the discussions around decommissioning in the region.
Please get in touch if there is more information, data, interviews with executives or networking opportunities that you need.
For more information please visit www.decomworld.com and or contact Dean Murphy at dmurphy@decomworld.com.
Join the conversation linkedin.com/offshoredecommissioning @decomworld
Decomworld Gulf of Mexico Offshore Decommissioning market map © 2012 FC Business Intelligence®
The information of this document was prepared by DecomWorld (part of FC Business Intelligence) and its partners. DecomWorld has no obligation to tell you
when information in this document changes. DecomWorld makes every effort to use reliable, comprehensible information, but we make no representation that ➜ To receive the latest discounts
it is accurate or complete. In no event shall Nuclear Energy Insider and its partners be liable for any damages, losses, expenses, loss of data or profit caused by on the Offshore Decommissioning
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Report, 2012-13, Gulf of Mexico
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