COMPANY PRESENTATION

GEOSTOCK GROUP

AGA - IGU MEETING. DALLAS, April 24th 2007

GEOSTOCK GROUP

May / Orne

Gargenville

Donges

Sennecey

Lavera

Manosque

GEOSTOCK OPERATIONS IN FRANCE

Storage facilities in operation

Projects underway

Decommissioned

Liquid hydrocarbons

Natural gas

L.P.G

Underground Storage Sites in Germany

UGS References (Engineering)

in operation

in Planning or under

construction

Porous rock

formations

Salt caverns or

disused mines

Buchholz

Rüdersdorf

Staßfurt

Bernburg

Teutschenthal/Ethylen

Bad Lauchstädt

Kirchheilingen

Allmenhausen

Kraak Reitbrook

Harsefeld

Kalle

Epe

Xanten Peckensen/Ellenberg

Ketzin

Aus “Jahrbuch 2005 Bergbau, Erdöl und Erdgas, ...”, Verlag Glückauf GmbH, Essen

North Dayton

Tuzandepetl

Sydney

Shantou

Wuustwezel

Mohammedia

Killingholme

Berkaoui

Carriço

Sines

Yosu

Inchon

Ulsan

Pyong-taek

Séoul

Ningbo

Marmara

GEOSTOCK EXPERIENCE OUTSIDE FRANCE

Storage facilities in operation

Projects underway

Liquid hydrocarbons

Natural gas

L.P.G

Other

Visakhapatnam

Diadema

Qingdao Namikata

Byley

Waha

Lulunta Carrizal

Jintan

- 100 SALT CAVERNS . Liquid Hydrocarbons (44) 7 500 000 m3 . LPG ’s (4) 125 000 m3 . Natural Gas (52) 1 610 Million m3 (S) - 3 AQUIFERS Natural Gas (3) 1 940 Million m3 (S) - 4 DEPLETED FIELDS Natural Gas (4) 2 500 Million m3 (S) - 27 MINED ROCK CAVERNS . Liquid Hydrocarbons (2) 250 000 m3 . LPG ’s (25) 4 145 000 m3 - 1 DISUSED MINE Liquid Hydrocarbons (1) 5 000 000 m3

GEOSTOCK GROUP COMBINED EXPERIENCE

MANOSQUE (France) continued

Our scope of work :

26 storage caverns and 2 brine-producing

caverns.

Preliminary and feasibility studies

Basic and detailed designs

Owner ’s representative and construction manager

Acceptance tests, commissioning and start-up

Assistance to administrative authorizations

Training of operators and preparation of

operating documents

Operation of the facility.

Owner : GEOSEL-MANOSQUE

6,5 millions m3 Liquid Hydrocarbons

(crude oil, diesel oil, gasoline, naphta)

LEACHED SALT CAVERNS

MANOSQUE (France)

Main features:

7 caverns

Depth : top : from 930 to 1240 m

bottom : from 1263 to 1555 m

Height : from 189 to 333 m

Volume : from 220 000 to 500 000 m3

Capacity : total : 450 M Nm3

working gas : 300 M Nm3

Inlet flowrate : 400 000 Nm3/h

Outlet flowrate : 600 000 Nm3/h

Pipeline between storage facility and Aix (70

km long, diameter 750 mm)

Construction : 1996 - 1999

Owner : GEOMETHANE

300 M Nm3 Natural Gas

Our scope of work:

Caverns engineering, leaching, sonar control,

acceptance tests and commissioning of the

facility.

Assistance to administrative authorizations

Assistance to operation

LEACHED SALT CAVERNS

WUUSTWEZEL (Belgium)

Main features:

Caprock : shale

Reservoir : highly karstified and fissured

limestone

Anticline - top : 1100 m - height 200 m

Surface area : 6 km2

Capacity : total : 1200 M Nm3

working gas : 600 M Nm3

Injection rate : 300 000 Nm3/h

Withdrawal rate : 500 000 Nm3/h

Construction : 1975 - 1986

Capacity/flowrate increase : 1985 - 2000

Owner : FLUXYS

1 200 M Nm3 Natural Gas

Our scope of work:

Preliminary and feasibility studies.

Basic design. Wells construction supervision.

Assistance to surface facilities construction

Supervision of acceptance tests,

commissioning and start-up.

Assistance to administrative authorization

Assistance to operation (reservoir

management)

POROUS MEDIA

Lavera / France (Géogaz)

UNDERGROUND STORAGE TRENDS 2007

• Strategic Storage (USA, China, India)

• Trading Hubs (Singapore)

LPG, ROCK CAVERNS

LIQUID

HYDROCARBONS

• Strategic Storage (France, USA, China, India)

• Trading Hubs (Singapore)

NATURAL GAS

• Strategic Storage (China, Turkey, Western

Europe etc…) • Consideration of large size offshore storage

projects

• Extension of existing facilities (Working gas,

Deliverability, high Turn Over etc… France, Germany, etc…) • High flexibility trading storage facilities (salt

mined caverns e.g. UK, USA)

UNDERGROUND STORAGE TRENDS 2007

• Increasing difficulty for public acceptance of grass root projects

• Increasing requirements from Authority in charge on renewal of operating permits (safety studies, addition of safety equipment)

• Booming activity in Europe (as a result in particular of deregulation & concerns with supply): all projects announced will likely not be developed to construction

•