2005 Eni Field Trip - Libya

Giorgio MoscatelliProjects Director

Faisal ShitaSenior Offshore Project Manager

September 23rd, 2005

2

Western Libya Gas Project: overall scheme

LIBYA

LIBYA

SICILY

SICILY

540 Kmcoast to coast

•Ø 32”

•Ø 16” •Ø 36”

•Ø 10”

•Ø 32”

1.127

540 Km

MELLITAH

SABRATHA Plt.

SICILY

GELA

BahrEssalamLIBYA

Wafa

520 kmCoast to Coast

Productionstart-up on schedule

and budget

3

Western Libya Gas:world scale project

>20,000 people employed 10 international main contractor/consortium

9 main engineering/construction locations outside Libya

Langfang

YokohamaFukuyama

London

Sabratha & Bahr Essalam

Mellitah

Wafa

ParisItaly

Tripoli UlsanKuantan

Dusseldorf

Malaysia

4

Western Libya Gas Project Upstream Overview

Eni Gas operator (Eni 50% - NOC 50%)

Reserves (Eni share):950 M boe

Gas Production of 10.0 Bcm/Y (100%)4.0 bscm/y - Wafa6.0 bscm/y - Bahr Essalam

of which:

8.0 bscm/y delivered to Italy2.0 bscm/y delivered to local market

Peak production by 1Q06:Eni equity: 128 kboe/d

Local Gas Line

540 K

m

Onshore Pipelines

WAFADesert Plant

MELLITAHComplex

Wafa Coastal Plant, Mellitah Plant and gas compression

station

SABRATHAPlatform

SubseaClusters

Gas Export Line

GREEN STREAM

5

Western Libya Gas Project WAFA Field Production 2005 (100%)

Wafa GasWafa NGLWafa Oil/Cond.

Start up on October 2004 On schedule

128 131

Budget Jan-Aug 05 Actual Jan-Aug 05

Kboe/d

6

Bahr Essalam Field DevelopmentHighlight

June 2002Project Kick-off

4 August 2005First offshore gas

410 kmCables

50,000 tEquipment & Structures

27Number of wells

300 kmSealine & Gathering

4,000Manpower

7

Sabratha Platform Jacket – Main Features

20 slots, 202 m height, 24,000 T

8 legs, 16 foundation piles (120-150m long each)

Installation method: launched and self upending

Installation campaign 3rd – 19th October 2004

Bahr Essalam Field DevelopmentSabratha Platform

8

Deck Installation Main Features

Bahr Essalam Field DevelopmentSabratha Platform

The deck installation was performed by the crane vessel Saipem 7000, in 3 main lift from 29th October to 11th November 2004 as follows:

Integrated deck, 12,100 T weight in lifting condition. This was the world record as single offshore lift

Living Quarter, 1,700T weight, accommodation for 117 people

Flare, 700T weight & 117m length

Other minor lifts

The process plant is designed to treat:

• 25 MlnSm3/d of dry Gas• 5,100 m3/d of condensate

9

Living Quarter Installation Early November 2004

Living Quarter Installation

The Living Quarter installation was performed by the crane vessel Saipem 7000 early November 2004 during the Deck installation campaign

The living Quarter, 1,700T weight is capable to accommodate 117 people

Jacket Installation 3rd-19th October ‘04

Bahr Essalam Field Development Sabratha Platform

10

Hook-up & Commissioning 12th November 2004 – 24th July 2005

Bahr Essalam Start up 4th August 2005

Bahr Essalam Field DevelopmentSabratha Platform

11

MANIFOLD 1AND HP

SEPARATOR 1

RAW GAS FROM

SUBSEAWELLS

MANIFOLD 2AND HP

SEPARATOR 2

TESTMANIFOLDAND TEST

SEAPARATOR

FLASH GASCOMPRESSOR

HP PRODUCTIONCOOLING AND DEHYDRATION

TRAIN 2

CONDENSATERECOVERY

TRAIN

CONDENSATEEXPORT SYSTEM

GAS EXPORTPIG TRAP

BOURI GAS PIG TRAP

BOURICONDENSATE

PIG TRAP

To Mellitah

To Mellitah

Bahr Essalam Field DevelopmentSabratha Platform - Overall Process Scheme

RAW GASFROM

PTF WELLS

HP PRODUCTIONCOOLING AND DEHYDRATION

TRAIN 1

12

Each of the 11 subsea Xmas Tree has the following main features:

Pressure Rating 5000 psiWeight 38 TonDimensions 4.5m L x4.5m W x5m HActuated valves controlled from the Platform through a control umbilical

Presently 8 subsea wells have been completed (5 on Endline & 3 on Midline)

Bahr Essalam Field DevelopmentSubsea System

Subsea X-mas Trees

13

Bahr Essalam Field DevelopmentSubsea System

Endline and Midline PSMs installed on September 2004

PSMs post installation test and PGB-PSM spoolsinstallation October–December 2004

Protective Structure Manifold (PSM)

11 Subsea wells divided in two clusters (5+6)

The protection is granted by two PSM with production facilities

The main features of each PSM are:

6 slots830 T, 65m L x18.5m W x10m H1 production manifold +1 test manifold with actuated valves controlled from the Platform

14

Sealine installation campaign 18th May 2004 – 16th June 2005

Sealine ready for Gas in 16June 2005

Gathering system from the subseawells to Sabratha Platform:

22” production line + 8” test line - 24 Km long claddedwith corrosion resistant alloy.Design Pressure 211 bar 4” service line - 24 Km long Design Pressure 345 bar

Export system from Sabratha Platform to Mellitah:

36” gas sealine - 107 Km longDesign pressure 88 bar 10” condensate sealine - 107 Km long. Design pressure 79 bar

Sealines system

Bahr Essalam Field DevelopmentSealines

Bahr Essalam Field Development

Mellitah Plant

16

Slug Catcher Condensate Stabilization

Gas Trains # 1,2,3

Steam and Power Generation

Common Process Facilities

Buffer Tank & StabilizedCondensate Storage Tank

Liquid SulphurStorage

Solid SulphurArea

Sulphur RecoveryTrains # 1,2,3

Main Pipe-rack West /East

Bahr Essalam Field DevelopmentMellitah - Offshore Gas Treatment Area

17

4,400TTank Erection

1,800KmE & I Cable Pulling

27,000,000hrsManhours worked

14,700TPiping Installation

22,700TPipe rack & Steel Structures

62,000m3Foundations and Buildings

QuantitiesUnitDescription

Bahr Essalam Field DevelopmentMellitah Plant - Main Features

18

RECEIVINGTRAPSAND

SLUG CATCHER

CONDENSATETREATINGTRAIN 1

CONDENSATETREATINGTRAIN 2

OFF - GAS COMPRESSION

GASTREATINGTRAIN 1

GASTREATINGTRAIN 2

GASTREATINGTRAIN 3

LPG FRACT.TRAIN 1

LPG FRACT.TRAIN 2

STABILIZED CONDENSATE STORAGE

LPG TO WAFA COASTAL

STORAGE & EXPORT FACILITIES (6,400 bbl\day)

SULPHUR TO SOLIDIFICATION &

SHIPLOADING FACILITIES (528 Ton/day)

GAS CONDENSATE

GAS TO METERING & SALES (6.6x109

Sm3/y)

45,000 m3

BUFFER

45,000 m3

STORAGE

45,000 m3

STORAGE

WAFA EXPORT

39.000 (bbl/day)

Bahr Essalam Field DevelopmentMellitah Plant - Overall Process Scheme

SULPHURTRAIN 1

SULPHURTRAIN 2

SULPHURTRAIN 3

19

2 condensate stabilization trains with a total process capacity of 39,000 bbls/day

Bahr Essalam Field Development Mellitah Plant

Condensate Stabilization

20

3 gas treatment trains with a design capacity to process and produce 6.6 MMscm/day of gas each

The process consists of gas sweetening, sulphurremoval, gas dehydration for water removal and hydrocarbon dew point control with NGL extraction (6,400 bbl/day)

Bahr Essalam Field Development Mellitah Plant

Gas Treatment

21

3 sulphur recovery trains are installed

The total recovery capacity is 528 Ton/day of sulphur

Each train consists of MDEA absorber, MDEA regenerator, thermal reactor and sulphurcondenser pit

Bahr Essalam Field DevelopmentMellitah Plant

Sulphur Recovery

22

2 tanks for liquid sulphurstorage, solidification unit and solid sulphur storage handling section

The sulphur is shipped through a belt conveyor and a ship loader located on the jetty

Bahr Essalam Field DevelopmentMellitah Plant

Sulphur Storage

23

4 HP steam boilers with a capacity of 330 Ton/h of steam each

Steam is utilized for power generation and process purposes

3 steam turbine with a power generation capacity of 25 MW each

Bahr Essalam Field DevelopmentMellitah Plant

Steam Boilers

24

3 tanks with a capacity of 45,000 m3 each

The condensate coming from the treatment train is stored and then sent to the fiscal metering and export system

Bahr Essalam Field DevelopmentMellitah Plant

Condensate Storage