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May 2009 Three of a kind beats a pair The synergies of developing multiple small oil fields May 2009

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STRICTLY PRIVATE AND CONFIDENTIALMay 2009May 2009

Three of a kind beats a pairThe synergies of developing multiple small oil fields

May 2009

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

AGENDA

Corporate Rationale

Recent Experience

Location and Regional Context

Banquo Discovery

Helena Discovery

Tybalt Prospect

Development Scenario

Advantages

Way Forward

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Corporate Rationale

3

West Don, Don Southwest

Crawford, Causeway

Banquo, Helena

DSW, Bourbon, Handcross,

Katherine, Tybalt, Viola

Production base providing cash flow to underpin growth

Near-term developments driving production growth and increasing asset diversification

Undeveloped discoveries with lower-risk upside and ‘development optionality’

Diverse exploration portfolio giving exposure to incremental upside

Potential for consolidation and asset purchasesto access pan-North Sea growth opportunities

Acquisition Opportunities

Value Adding Potential

Valiant Strategic Area of Focus

Core NNS – near and medium term production

with significant E&A upside

Emerging WoS –‘Company-making’ 

potential

Emerging CNS– ‘Play-type’ diversification & new 

opportunity set

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Recent Experience – Don Area

Don SW – Brent Field

2 production wells, 2 injection wells

West Don – Brent Field

2 horizontal producers 1 slanted injector well

Similar challenges bringing fields together through single facilities solution

Initial period tanker offload then tie back to Thistle

Achieved first production in April on schedule, under 1 year from FDP approval

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Location Map

5

211/8cTybalt

211/18a SW Don

211/18a W Don

211/13a Helena

211/8a Banquo

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Regional Stratigraphy

MAGNUS SANDSTONETybalt, West Penguin, Magnus

BRENT GROUPDon Fields, East Penguin

LUNDE FORMATIONCormorant, Banquo, Helena,

Alwyn North

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Triassic Depositional Environment

7

Main Triassic depositional fairways in the East Shetland Basin

Source: Neil Meadows VPP Report 2008

B H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Upper Jurassic Depositional Facies Map

Magnus sandsEnter from the North

Home sandsEnter from the West

Cladhan sandsEnter from

the South West

Localisedsand

BrentEroded

Major faults

Eroded Brent

Inter basinal hinterland –

Good quality sand

Intra basinal hinterland –

Medium quality sand

T

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Source Kitchen

Main source rock: Kimmeridge Clay

Secondary source: Heather.

Both considered low risk for presence

Oil Kitchen Gas Kitchen

211210

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009 10

Banquo, Helena and Tybalt

10

Banquo (Block 211/08a) – Triassic

211/08a-2 discovery well

Oil

21 mmboe Contingent Resource

Helena (Block 211/13a) – Triassic

211/13-1 discovery well

Oil or Gas Condensate

6.8 mmboe Contingent Resource

Tybalt (Block 211/08b) – Upper Jurassic

Exploration Prospect

Oil

38.6 mmbbls Prospective Resource

BANQUO

HELENA

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Regional East – West Lines

AA’

B’B

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Banquo Discovery

12

Good Quality Reservoir predicted from elastic inversion seismic data up-dip of the L500 oil bearing sands tested at over 6000bopd by well 211/8-2.

RPS 2C Resource of 21.1 MM BOE

Sand

Sand

ODT

High dip indicates sand

Oil Section Tested

W E

B

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Helena Discovery

13

Acoustic inversion seismic data indicates good quality sandstone reservoirs in the L400 sand tested in 211/13-1 at 10mmcfd and 3000bcpd as well as L500 and L600 reservoirs.

RPS 2C Resource of 6.8 MM BOE

H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Chemostratigraphy

14

Recent study by Chemostrat

B H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Tybalt – Potential Resources Summary

Magnus Sand Depth Map (m)

T

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Tybalt reflection and inversion

N S W E

N S

W E

T

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Potential Hosts

17

TB H

1

2

3

4

5

MagnusPenguin / Brent CNorthern ProducerThistleMurchison

1 12

2

3

34

45

5

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Advantages

Material project size

Interest to potential hosts

Allows a concentrated development effort

Justifies team build out

Sequencing of activities can accelerate development

Batch drilling

Subsea installation / Rig Moves / DSV timing can be flexible

Builds on knowledge acquired from previous projects

Early identification of multiple projects allows planning and flow assurance to cover all potential

TB H

STRICTLY PRIVATE AND CONFIDENTIALMay 2009

Banquo, Helena & Tybalt – Way Forward

19

2009

2010

2011

Banquo and Tybalt site surveys acquired and are now drill ready

Seeking active partners for drilling phase

Initial concept design studies

Full field development / project execution

First oil Q4 2011

Appraisal drilling campaign (two wells)

Progress front-end engineering and design

Agree export route

Submission of FDP

TB H