Sagex Petroleum AS Sagex Petroleum AS (NO 981 400 585 MVA)Sørkedalsveien 90 A Davidson HouseNO-0376 Oslo phone +47 22 51 79 79 Aberdeen Science and Technology ParkNorway fax +47 22 51 79 78 Bridge of Don, Aberdeen AB22 8GT, UK phone +44 1224 357244

www.sagex.no

Field Developments and Technical SolutionsHistorical review of oil and gas developments offshore Norway

Petroleum Policy and Management ProjectThe 3rd Workshop Indonesia Kutei Basin Case Study

Surabaya, IndonesiaJuly 18 – 22, 2005

Barents Sea

Norwegian Sea

North Sea

Norwegian Shelf Today

Developments offshore Norway

Development of infrastructure has made increasing recovery of petroleum resources possible.•Sharing of processing and transport capacity has allowed successive tie-in of smaller discoveries. •A similar development will take place further north as new major field developments provides tie- in possibilities for smaller discoveries.

Snøhvit LNGBeing Developed

LNG ship transport

Orm

en Lange

Being Developed

Skarv

Being considered

6600 Km of gas pipelines

Ekofisk Area

Tampen

Oseberg

Ekofisk - First Norwegian Oil and Gas Field

EmblaUnmanned Platform controlled from Ekofisk Center

Ekofisk TankOil Storage (replaced by Pipeline) and Field Center

Ekofisk Field 29 Platforms in 70- 75 m water depth

Pictures ConocoPhillips

Ekofisk CenterProduction start 1971

Tampen Area- Cooperation across Licences

Tampen Area. Several Fields utilising common infrastructure

Snorre ATLP in 300m water depth

Statfjord AConcrete GBS w/oil storage in 145m water depth.

1979

19921999

1986

1997

1994

19941995

1999

1998

2001

Pictures credited Saga StatoilTordis Subsea

Oseberg Area- Central Platform as hub for development

1988

Oseberg A Field CenterConcrete GBS in 100m water depth. No oil storage.

1999

2004

Oseberg CIntegrated PDQ Platform

Tune Subsea. 2x12” 10 km multiphase pipelines and umbilical

Oseberg D

2002

Oseberg Area

Pictures credited Norsk Hydro

Troll Field- Timing of Oil and Gas Production

Troll AConcrete gas platform in 330 m water depth

Troll ATow out to the Troll Field

Troll BConcrete semi- sub floating oil platform

1996

Pictures Hydro, Statoil

Troll Field- Oil and GasTwo Operators Hydro and Statoil

19951999

Åsgard Gas and Oil Field- Tie-in possibilities

Åsgard AFPSO Oil Production in 300m water depth

Åsgard BSemi Sub Gas Production in 300m water depth

19992000

2005

Concrete Mono Tower w/oil storage in 250m water depth

Associated gas

19932000

Pictures Statoil, Shell

The two Nothern most developments-and more to come

Norne.FPSO Oil Production in 380m water depth.Associated gas to Åsgard pipeline.

Heidrun Concrete TLP. Oil production in 350 m waterdepth. Associated gas to shore for methanol production.

Sub sea template w/ two 10” productionlines and one umbilical

Snøhvit Gas to LNG Field.Subsea Development in 350m water depth

Under construction

Norway’s first oil and gas project in the Arctic Region

Pictures,Statoil

35 years of development

Ormen LangePlan 2007

New technology

Years

Ekofisk1971

Valhall1982

Statfjord1979

Gullfaks1986

Oseberg1988

Snorre1992

Draugen1993

Troll1996

Åsgard1999

SnøhvitPlan 2005

From South toward North in 35 years

Deeper waters, harsher environment, stretched technology

Technology steps•Laying of pipelines in deep waters and challenging land approaches•From vertical wells to extended reach horizontal smart wells•Well stream multiphase flow in pipelines over long distances•From wellhead platforms to subsea satellites •From steel jackets, deep water concrete platforms to floating production and extended subsea developments

CAPEX

1970 1980 1990 2000 2010

USD/BOE

6

Same Cost

- And one step at the time pays off