Kent Wells Technical Update – Sealing Cap Installation

10 July, 2010

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Cum. LMRP Cap Cum. Q4000 Daily

Current Status UpdateCollection: LMRP Cap + Q4000

Next Phase of Collection: Helix Producer

~734,000 barrels

Relief Wells

DDII @ 15,963’DDII @ 15,963’ DDIII @

17,810’DDIII @ 17,810’

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Sealing Cap Installation Steps

HC Connector

HC Connector

3 Ram Stack3 Ram Stack

Flange Transition Spool

Flange Transition Spool

Flex Joint Flange

Flex Joint Flange

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Steps

Step – Remove LMRP Cap, Unbolt & Remove Flange

1 & 2

FlangeFlange

Flange Splitting Tool

Remove LMRP Cap

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Flange OvershotRemoval Tool1

2 Remove Flange

Steps in removing

• Lift off LMRP Cap

• Unbolt & remove 6 bolts with ROVs

• Flange Overshot tool lowered on top to lift off flange

• Flange splitting tool only used if required

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Step – Install Flange Transition Spool3

Steps to Install

• Bundle drill pipes, if necessary

• Lower Flange Transition Spool with wire line

• Stab in and remove strap on drill pipes

• Install bolts

Drill pipesDrill pipes

Actual tool being tested

Step – Install 3 Ram Capping Stack

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Lower Capping StackWith Rig on H4 Connector

Landed & Connected Disconnected

PerforatedPipe

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Containment: Mid July OnwardsCapacity 60– 80 mbd

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Questions?

Flange Removal Tool 3 Ram Stack

Flange Transition

Spool

Total Sealing Cap