Southeast Asia – positioned for continued profitable growth

1

2

Base Free cash flow to invest

Growth

Southeast Asia – ~8% growth from known projects, self-funded

5-10% sustainable growth

Ex

3

Exploration

Southeast Asia – Talisman focus area

Renewal of the firm

Delivering profitable growth Land million acres (net)

Production mboe/d

Free cash flow* $ million

20

120

250

100

200

80 10

150

60 100

40 50

20 0

0

0 2008

2009

2010

2008

2009

2010

2008

2009

2010

• Growth strategy in Southeast Asia is on track  Four-fold increase in footprint  10% production growth in 2010 with significant free cash flow generation  Medium-term ~8% p.a. growth through existing developments

• Quality exploration acreage underpins long-term growth *Free cash flow excludes A&D capital

May 2011

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Page 1

Southeast Asia – health, safety and environment Total recordable injury frequency (TRIF) and lost time injury frequency (LTIF)

Number of spills (>0.5 bbl) and unintentional hydrocarbon releases (UHR)

Per million man hours 4

25

TRIF

Spills

LTIF

UHR 20

3

15 2 10

1 5

0

0

0 2009

2010

1Q 2011

2009

2010

0

0

1Q 2011

Growing gas demand continues to support premium pricing Asia Pacific gas supply demand balance bcf/d 90

LNG - flexible

75

Demand

LNG - contracted

21 bcf/d

Pipeline

60

Local production (excludes intra-regional LNG)

45 30 15 0

2000

2005

2010

2015

2020

Asia Pacific gas demand by sector bcf/d 90

Power generation 75

Industrial Residential/commercial

60 45 30 15 0

2000

2005

2010

2015

2020

Source: Internal

May 2011

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Page 2

Talisman advantage in Southeast Asia Southeast Asia gas price trend $/mcf

Singapore

Indonesia

Malaysia

15

6

6

+8% +16%

12

4

+10% 4

9 6

2

2

3 0

0

2005

2010

0

2005

2010

2005

2010

Source: Wood Mackenzie

Southeast Asia oil-linked production mmcf/d

Percentage (%) TLM Southeast Asia production linked to oil

TLM Southeast Asia gas production

750

100 80

500

60 40

250

20 0

2008

2009

2010

2011

2015

0

Near-term growth projects Vietnam

PM-3 PM-3 CAA CAA IOR IOR

Jambi Jambi Merang Merang

HST/HSD HST/HSD

Malaysia Corridor Corridor

OK OK

Papua New Guinea

Indonesia

Stanley Stanley Kitan Kitan Timor Leste Km 0

May 2011

500

1,000

Australia

1,500

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Page 3

Near-term projects underpin production growth Southeast Asia production mboe/d 200 Development Base ~8%

Key development projects • Corridor additional gas sales • Jambi Merang • PM-3 CAA IOR • PM-3 CAA infill drilling • HST/HSD • Kitan

100

0 2008

2009

2010

729

593

559

731

644

769

2011

2012

2013

2014

2015

CAPEX ($ million) Cash flow ($ million)

Indonesia South Sumatra core area

Gas to Duri

Gas to Singapore

TLM block Gas pipeline

Indonesia gas price trend $/mcf 6

Jambi Jambi Merang Merang

Average domestic gas purchase

4

55development development wells wells Facilities Facilities

2

Corridor Corridor Infill Infilldrilling drilling Dayung Dayungfacilities facilities upgrade upgrade Sumpal Sumpalexpansion expansion LTRO LTRO Suban SubanPhases Phases 22&&33

South Sumatra

0

2005

2006

2007

2008

2009

2010

• Strategic core area OK OK Block Block

• 2P reserves of 369 mmboe

Infill Infill wells wells

• Infrastructure in place • Gas price underpinned by demand Gas to Java

• Demonstrated execution

May 2011

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Page 4

Corridor – a major cash generator for Southeast Asia • Largest gas producing property in Talisman’s portfolio

1Q 2011 price realization and netbacks $/mcf

$9.41

$3.09 $0.76

Realized price

Royalties

Opex/ transportation

$5.55

TLM Southeast Asia netback

    

1 bcf/d (gross) sales gas 4.3 tcfe (gross) committed to gas contracts 1.2 tcfe (gross) waiting to be monetized Further upside Majority of production linked to oil price

• Technical unitization agreed in 2010  Allow further development opportunities  Potential for additional gas contracts

• 3 wells currently producing over 600 mmcf/d • Latest new well capable of 160 mmcf/d

Corridor – continuing to grow Incremental production mboe/d

Sumpal plant expansion

40



Increase capacity to 310 mmcf/d (gross) raw dry gas

Letang Tengah Rawa Optimization (LTRO) • • 20

Rawa station modification Additional 45 mmcf/d (gross) sales gas

Suban • •

Wells and additional compression Train 5

Dayung •

0

2011

2012

2013

2014

Additional compression and debottlenecking

2015

Total future development costs – $3.86/boe

May 2011

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Page 5

Jambi Merang – a high quality acquisition TLM block TLM non-focus block Past well Prospect/lead Gas pipeline Oil field

South Sumatra

Gas field

Production mboe/d

12

8

4

Gas to Singapore and Duri

0

Jambi Jambi Merang Merang

2011

2012

2013

2014

2015

• Strategically located next to key infrastructure • 2P reserves of 28 mmboe at cost of $8.15/boe • Fast track development Gas to Java

• Leveraging premium domestic market • Potential for significant upside

Jambi Merang – first production delivered in 15 months • Results exceeding pre-drill expectations

Late 2009

• Ahead of schedule and on budget • Targeting plant expansion • 7.4 million hours in 2010 without LTI

Early 2011

• Strong execution reinforcing NOC relationship • 10 mboe/d production in 2015

May 2011

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Page 6

Malaysia – proven project execution PM-3 CAA – Southern fields Sanction date

2000

First production

2003

Total gross cost ($ million)

2,700

Total gross project EUR (mmboe)

310

PM 305/314 Late 2003

Sanction date

August 2005

First production Total gross cost ($ million) Total gross project EUR (mmboe)

385 40

PM-3 CAA – Northern fields Sanction date

Late 2005

First gas

July 2008

First oil

March 2009 1,990

Total gross cost ($ million) Total gross project EUR (mmboe)

269

PM-3 CAA – stable production base with near-term growth TLM block Vietnam

Prospect/lead Oil pipeline

Song Doc

Malaysia

Production mboe/d 50

Development

Gas pipeline Oil field

40

Base

Gas field 30 20

PM-3 PM-3 CAA CAA

10 0

2008 2009 2010 2011

2015

• Stable and reliable production base • Substantial cash flow • Further organic growth through incremental oil recovery projects

May 2011

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Page 7

PM-3 CAA – incremental oil recovery projects Gas export to Vietnam

IOR IOR Phase Phase 2a 2a (Kekwa) (Kekwa)

TLM block Prospect/lead Oil pipeline Gas pipeline Oil field Gas field

IOR IOR Phase Phase 2b 2b (Raya) (Raya)

• 9 new producers, 3 new injectors • 11 mmboe incremental reserves (2P) • Results exceeded expectations

IOR Phase 2a* • New platforms, new wells, facility upgrades • Targeting 24 mmboe (2P) in medium-term

Gas export to Malaysia

IOR (Phases 1 & 2a) production

IOR Phase 2b*

mboe/d 8

• New well slots and wells to existing platforms

IOR Phase 2a IOR Phase 1

6

IOR Phase 1 (completed in 2010)

IOR Phase 3*

4

• Additional wells • Facilities debottlenecking

2

0

2011

2012

2013

2014

2015

* To be sanctioned

Vietnam Block 15-2 HST/HSD development TLM block Multiphase production Gas lift Water injection Gas export Oil field

HSD HSD

HST HST

Hai Su Trang (HST) • Underpins development in Block 15-2 • Clastic reservoir • Initial development with 3 producers and 1 injector

TGT TGT

Hai Su Den (HSD)

FPSO FPSO

Vietnam

Gas to Bach Ho Field

15-2/01

• Re-sized with significant capital reduction • Fractured basement reservoir • Initial development on Block B with completion of 2 existing wells

Current plan Sanction

2011 year-end

2P reserves (mmboe)

24

First oil

2013

Peak production (boe/d)

10,000 – 15,000

IRR

>30% at $75/bbl

May 2011

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Page 8

Long-term potential from high quality exploration portfolio TLM block Major exploration option Other exploration option LNG facility

Vietnam Nam Nam Con Con Son Son Basin Basin Sabah Sabah

Arun LNG

Malaysia

Bontang LNG

Papua Papua New New Guinea Guinea

Makassar Makassar Straits Straits

North Sumatra

Tangguh LNG

East Indonesia

PNG

Indonesia PNG LNG JPDA

Km 0

500

1,000

Australia

1,500

Expanding exploration footprint in the region • Four-fold increase in footprint

Total land holdings million acres (net) 20

• Substantial exploration position provides potential long-term growth

Malaysia Vietnam Indonesia 10

PNG

 Vietnam – Nam Con Son Basin  Indonesia – Makassar Straits  PNG – Foreland Basin

0

2008

2009

2010

Peer land holdings comparison – Southeast Asia*

• Continued access to acreage via regular licensing rounds

million acres (gross) 120

NOCs

100

Talisman IOCs

80

• Talisman is the leading IOC with largest acreage position in Southeast Asia

60 40 20 0 Source: Wood Mackenzie *Includes China

May 2011

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Page 9

Exploration supports longer-term production growth Southeast Asia production mboe/d 250

200

Medium-term exploration ~8%

150

Vietnam • Nam Con Son

Indonesia

Near-term projects

100

• • • • • •

50

• Makassar Straits • Andaman III block • Indonesia JSAs and future licensing

Corridor additional gas sales Jambi Merang PM-3 CAA IOR PM-3 CAA infill drilling HST/HSD Kitan

Papua New Guinea •

Foreland gas aggregation

Malaysia • PM-3 CAA future developments • Sabah

0

2008

2011

2015

2020

Nam Con Son basin delivers gas into growing power market

Vietnam

Phu Phu My My Power Power Complex Complex --3,900 3,900mw mwcapacity capacity --40% 40%of of Vietnam’s Vietnam’s energy supply energy supply

TLM block Pending Prospect Proposed pipeline

Southeast Vietnam projected gas supply mix btu/d (trillion) 2.0

Yet to find

Pipeline capacity

Uncontracted 1.5 Nam Nam Con Con Son Son Pipeline Pipeline 22 Online: Online:2015 2015

1.0

Gazprom

0.5

Exxon

Lan Do

Red Emperor discovery

May 2011

0.0 2010

2015

2020

Source: Wood Mackenzie

Nam Nam Con Con Son Son Pipeline Pipeline 11

Lan Tay

Demand

Contracted & committed

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• Power demand growth (8.4% p.a.) outpacing GDP (6.5% p.a.) • Nam Con Son Pipeline 2 approved, doubling capacity from Nam Con Son basin

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Page 10

PNG – well positioned for significant resource capture TLM block Discovery

• Estimated 15-20 tcf (gross) unrisked prospective resource

Well

Siphon-1 Siphon-1

Lead

Stanley-4 Stanley-4

Elevala-2 Elevala-2

Gas discovery

• Access to 14 licenses covering >9 million net acres

Stanley-2 Stanley-2 Ubuntu-1 Ubuntu-1

• Aggregate 2-4 tcf (gross) Aiema Aiema

• Positioned to lead PNG foreland gas aggregation

Weimang Weimang Awapa Awapa

• 3 main aggregation hubs • Stanley success validates gas aggregation strategy

PNG – early success at Stanley Resource additions

• Early condensate recovery scheme in Stanley

tcf 5

 Early monetization

3rd party TLM 4

 Sanction end of 2011

Stanley/Ubuntu

 450 bcf gas and 10 mmbbls condensate contingent resources

2011 risked drilling program

3

• Drill 8-10 wells in 2011 2

• Strategic partnering  Strong interest

1

 Value proposition increasing with each success  Access to monetization expertise

0 Discoveries 1Q 2011 2011 drilling Further risked Opportunities (contingent discoveries program (prospective (contingent resources) Stanley/Ubuntu (prospective resources) resources) (contingent resources) resources)

Talisman blocks

May 2011

3rd party blocks

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Page 11

PNG – potential to deliver competitively priced gas Feed gas cost comparisons $/mmbtu 3.5

• By 2020, a supply gap of ~21 bcf/d emerges in Asia Pacific

CSG Conventional gas

3.0

• Significant competition to fill supply gap from Australia

2.5

2.0

• PNG gas feed cost is expected to be competitive

1.5

1.0

• Coal Seam Gas (CSG) is high cost and is marketed at a discount

0.5

0.0 DonggiSenoro

PNG LNG

Browse

Pluto 2

Gorgon Wheatstone Darwin Queensland AP LNG Expansion Curtis

Ichthys

Gladstone LNG

Source: CERA

Southeast Asia capital Cash capital spend $ billion

Activity (2011-2015)

1.0 Exploration Development

Exploration

Base

• • • •

PNG Makassar Straits Nam Con Son Sabah

Development • • • • • •

0.5

Corridor additional gas Jambi Merang PM-3 CAA IOR PM-3 CAA infill drilling HST/HSD Kitan

Base 0.0 2010

May 2011

2011

2012-2015 average

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• Corridor • PM-3 CAA • Song Doc

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Page 12

Southeast Asia incremental production Incremental production mboe/d

Corridor

60

• Underpinned by demand

Corridor PM-3 CAA Kitan

50

PM-3 CAA

Jambi Merang

• Organic growth through incremental oil recovery projects

HST/HSD 40

Jambi Merang

30

• Steady liquids rich gas with potential upside 20

HST/HSD • High quality oil with upside

10

0

2011

2012

2015

Southeast Asia – summary

Long-term, safe, profitable growth • Strong free cash flow generation from base operations • ~8% growth largely self-funded over the medium-term

Large footprint with high quality acreage • Four-fold increase in footprint over last three years • Substantial position in high quality exploration basins to support future growth

Leveraging regional skills and relationships for a competitive advantage • Strong execution strengthens relationships with partner NOCs • Provides access to additional opportunities for further development

Strong regional gas demand and oil-linkage supports premium gas markets • ~70% of Southeast Asia production linked to oil • Strong regional demand should underpin continued price support for future contracts

May 2011

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Page 13