1

Shell ONEgas Shutdown Management Process

Challenges of delivering shutdowns on Shell’s Southern

North Sea Assets

2

Contents:

The ONEgas Asset

Integrated Activity Planning

Shutdown Management

Process

Application (scaling)

Timing

Governance

Materials

Results

3

02 March 2012 3

What is ONEgas?

BRISTOW

BRISTOW

BRISTOW

ONEgas Facilities and PipelinesONEgas Facilities and Pipelines

EP200810214239001 December 2008

12"

12"

10"

12"

10"

10 "

10 "

6"

36"130 km

24"85 km

6.8"

10"

11"10"

16"/

2"

Please note that the situation as shown is not geographical correct !

L9-FF-1

AME-2

K15-FB-1

K15-FG-1

L13-FD-1

L13-FE-1

L13-FC-1

L10-A(Gaz de France)

L15-FA-1(Gaz de France - Suez)

L5-FA-1(Gaz de France - Suez)

F3-FB(Gaz de France - Suez)

M7(Cirrus)

Gas PlantDen Helder

K13-A(Wintershall)

K14-FA-1P/1C

K15-FC-1

K15-FK

K17-FA-1

K15-FA-1

K14-FB-1

Markham(CH4)

K5 -P(TotalFinaElf)

K7-FA-1K8-FA-3

K8-FA-1

K8-FA-1AP K8-FA-2

K12-BD(Gaz de France)

K7-FD-1

K7-FB

L13-FH

AME-1

N-7

AWG-1

Assen

L2-FA-1

F15(TotalFinaElf)

Q16

L9-FA-1

L9-FB-1

D15-FA-1(Gaz de France)

Sean Pipe

line

BBL line

Seal

Pip

elin

e

NOGAT P

ipelin

e

NGT Pipeline

A6 / B4 Pipeline

Tyra

Pip

elin

e

NGT Extension

WGT PipelineLocal Pipeline

Leman

Export to B

acton

Leman

Export toBacto

n

IndefatigableExport to Perenco Bacton

30"7.6km (mothballed)

30"

20"

5.4k

m

35.8k

m

20"36.5km

30"

107k

m

10"

2.5km

No 2 Sealine 30" (m

othballed)

57.8km

24"

8.1kmNo 1 Sealine 30" and 4"

55.7km

24" 0.7km4"(mothballed)

20"

3.0k

m

24"

8"2.1km

2.2km

14"

2.7km

20"4.7km

12/14" and 2" Glycol

12 km

12/1

4" a

nd2"

Gly

col

15.5

km

24" trunkline and 3" Glycol

73km

14"

16"

23 k

m

26"

20"

100

km

24"

107 km

36"178 km

36"159 km

12"1km1

34"

trunk

line

470

km

16"

3.3km

24"9.2km

20"3.7km

12"

16"/2

"

3.4km

20"4.7km

30" and 4" (4" mothballed)

3.5km

INDEFATIGABLE

BRIGANTINE

FIELD

AQ/AC/AT(Perenco)

SEAN FIELD

BT(Perenco)

Carrack West(2009)

PBBarque

PL Barque

PMClipperPT

Clipper PRClipper

PCClipper

PWClipper

Skiff

PNGalleon

PGGalleon

CarrackQA

Cutter QC

SOLE PIT

CLEAVER BANKHIGH

LEMAN 'B'COMPLEX

LEMAN FIELD

LEMAN 'C'COMPLEX

ShellBacton

LEMAN 'A'COMPLEX

D

JD

JP

PD

PP

RDSouth

K

North

N

Corvette

L

M

BR

CARAVEL

SHAMROCK

BG

BP

E

BDBH

AP

AD2

AK

AD1 BT

CDF

GCP

ONEgas – Asset name created as a result of combining the management of the UK Southern North Sea assets owned by Shell UK Exploration & Production & the Southern North Sea assets from NAM

(Offshore, NAM, Shell Expro, gas)

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What is ONEgas 2011

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%%% 9% NL

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%90 %%%%%%%%% %%%%%%

%50 %%%%%%%%%

2 %%%%%%% %%%%%%

%90 B%% E%% R%%%%%%% %D%%

% U%%%%%

%50 B%% SFR

O%%% % A%%% %%950 %%%

C%%%% % E%%%% %%550 %%%

8 %%%%%%%%%%

%%%%%%%

15 %%%%% %%%%%%%%%

%12 B%% %%% %%%%% %%

NGL%

%75 %%% %%%%

% 550 S%%%% S%%%%

%500 C%%%%%%%%%%

2 %%%%%%%% %%%%

7 %%%%%%%%%%% %2009%

4 %% 5 %%%%%%%%%%% %2010%

%%%%% %% %%%%%

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The ONEgas Assets

Footer: Title may be placed here or disclaimer if required. May sit up to two lines in depth.

90 Producing Fields, 54 Installations, 350 Wells, 1200+ km’s Pipelines