PT Petrosea Tbk Analyst Presentation

July 2011Operations HighlightsOperations Highlights

December 2011

1

192

459383

672739

1,352

2006A 2007A 2008A 2009A 2010A Sep 2011A

E&C / POSB / Other Bayan Kideco Santan Batubara ABN

Strong Growth in Backlog Over Time(US$m)

Attractive and Visible Growth Supported by a Robust Contract Backlog

Pre-Indika Post-Indika

2

Asset Overview

CV (gar) 5,500

CV (adb) 5,800

Sulphur Content 0.6%

Ash Content 4–8%

Royalty 13.5%

Corporate Tax 25%

Pit-to-Port Distance ~35 km

Samarinda

Balikpapan

Santan Batubara

Reserves Resources

Ownership of a High Quality Coal Asset—Santan Batubara

1.31.6

2.0

1.3

'09A '10A 9m '10 9m '11

Production Volume(mt)

71.1

92.2

74.1

49.1

'09A '10A 9m '10 9m '11

Average Selling Price(US$ / t)

1.1

2.1

1.61.2

'09A '10A 9m '10 9m '11

Sales Volume(mt)

47.9 mt

283.7 mt

12.1

9.09.912.6

'09A '10A 9m '10 9m '11

Strip Ratio (x)

61.9

43.245.842.6

'09A '10A 9m '10 9m '11

Cash Cost(US$ / t, excluding royalty)

Santan Batubara Production Volume for FY 2011 is 1.7 million tonSantan Batubara Sales Volume for FY 2011 is 1.7 million tonSantan Batubara Average Selling Price, Cash Cost and Strip Ratio for FY 2011 are subject to finalization of the audited Financial Statements

3

Attractive and Visible Growth Supported by Capacity Expansion

(1) One fleet typically consists of 1 excavator, 5-8 dump trucks and other auxiliary equipment. Represents 250t equivalent fleet(2) Represents actual volume removed during the period(3) Represents 12 months capacity

2011 Monthly Overburden Removal(mbcm)

8 7 8 9 10 10 11 10 1012 1110

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Dump Trucks Excavators

Bulldozers Graders

Annual Overburden Volumes (mbcm)

5372

81

116

FY '08A FY '09A FY '10A FY '11A

4

25

6165

'08A '09A '10A

3529

'08A '09A '10A

Mining Others

6

26

41

3%15%

22%

'08A '09A '10A

Petrosea Summary Financials

Revenue Net Income and MarginAdjusted EBITDA and Margin(US$m) (US$m)(US$m)

(1) Normalized for US$4m of provision for doubtful debts with respect to the PT Ilthabi Bara Utama contract. (2) Normalized for US$25m of provision for doubtful debts with respect to the PT Ilthabi Bara Utama contract. (3) Normalized for US$1.4m of recovery relating to the reversal of a provision for Petrosea’s portion of Santan Batubara’s accumulated losses as at the end of 2009 and US$0.3m of provision for doubtful debts.(4) Normalized for US$1.4m of recovery relating to the reversal of a provision for Petrosea’s portion of Santan Batubara’s accumulated losses as at the end of 2009 and US$0.5m of provision for doubtful debts. (5) Normalized for US$3.1m increase in depreciation expense due to a change in depreciation method from an hourly utilization basis through 2010 to a straight-line method in 2011.Note: adjusted EBITDA is calculated as operating income plus depreciation. Petrosea did not record any amortization in the shown periods.

22

14

9m '10 9m '11

44

63

9m '10 9m '11

25

33

9m '10 9m '11

206

100

106

172

137

187

157

136

185

114

170

Mining Others

32%32% 34%21% 20%

9m ‘10 9m ‘119m ‘10 9m ‘11’08A ’09A ’10A 9m ‘10 9m ‘11 9m ‘10 9m ’11(5)’08A ’09A ’10A(3)

28

36

(1) (2) (4)

13%

36% 35%

’08A ’09A ’10A

26

6165

5

41

1

2%

'09A '10A

Santan Batubara – Key Financial Highlights

Revenue Net Income and MarginAdjusted EBITDA and Margin(US$m) (US$m)(US$m)

55

'09A '10A 9m '10 9m '11

34

29

9m '10 9m '11

30

1

1%

'09A '10A

18

23

9m '10 9m '11

153

113 113

29%

30%25%

20%21% 16%

44

2%

6

Growth Strategy - Continued Focus on Mining

9M 2011A Revenue Segmentation

9M 2008A Revenue Segmentation

POSB7%E&C

6%

Mining87%

US$185mUS$206m

POSB8%

E&C43%

Mining49%

US$162m

7

Health and Safety

LTIR: Lost Time Injury RateTRIR: Total Recordable Injury Rate

US$185mUS$206mUm

8

Thank You