Democratic Republic of São Tomé and Príncipe AAPG Conference Denver June 2009

Democratic Republic of São Tomé and Príncipe

AAPG Conference Denver

June 2009

Luís Prazeres

Executive Director ANP-STP

Introduction

This information is provided by ANP to Oil Companies as a introduction to the “Petroleum Geology and Prospectivity of Sao Tome and Principe”

For further details, information about data packages and data rooms please contact:

Luís Prazeres Osvaldo AbreuExecutive Director Business DevelopmentNational Petroleum Agency PGS Marine

Av. Das Nacaoes Unidas 4 The HeightsCaixa Postal N° 1048 Booklands, WeybridgeSao Tome, STP Surrey, KT13 0NYTel: +239 226 940 Tel: +44 1932 376584

Introduction to Democratic Republic of São Tomé and Príncipe

• Location:Location: In the Gulf of Guinea, off the west-In the Gulf of Guinea, off the west-

central coast of Africa, 250 kms (150 mi.) from central coast of Africa, 250 kms (150 mi.) from

GabonGabon

• Capital: Capital: SSãão Tomo Toméé

• Land area:Land area: approximately 1001 Km approximately 1001 Km22

• Maritime area:Maritime area: approximately 132,000 Km approximately 132,000 Km22

• Distance from Continent: Distance from Continent: 300 Km300 Km

• Population: Population: 160,000 (estimate 2007)160,000 (estimate 2007)

• Climate: Climate: Tropical. Average temperature 26° C Tropical. Average temperature 26° C

(78° F) on the coast; lower in the highland. Dry (78° F) on the coast; lower in the highland. Dry

season June to August. Short periods of tropical season June to August. Short periods of tropical

rains during the rest of the year.rains during the rest of the year.

• Official Language: Official Language: PortuguesePortuguese

• Government: Government: Semi-presidential Representative Semi-presidential Representative

DemocracyDemocracy

• Natural Resources:Natural Resources: Cocoa, coconuts, bananas, Cocoa, coconuts, bananas,

coffee, palm oil, fishes, Petroleum (not yet coffee, palm oil, fishes, Petroleum (not yet

exploited)exploited)

• Export:Export: cocoa, coffee, coconut, pepper cocoa, coffee, coconut, pepper

• CurrencyCurrency: Dobras (STD): Dobras (STD)

São Tomé

STP

SAOTOMEAN INSTITUTION

ANP Agencia Nacional de Petróleo

(Agency of National Petroleum)

Executive Director: Luis Prazeres• ANP is the regulatory authority for the petroleum operations

(exploration, production and transport of hydrocarbons).

ANP - National Petroleum Agency

Mission Statement

• The mission of National Petroleum Agency of São Tomé & Principe (ANP-STP) is to enhance the value of the hydrocarbon resources of the country, by promoting a sustainable exploration and production with due consideration for the environment.

• The ANP-STP shall carry out its duties in terms of the country's objectives, positioning itself as a credible partner for the world's oil industry. The Agency shall adopt a modern management style, upholding transparency and accountability that will contribute to the economic and social development of Sao Tome and Principe.

Blocks in São Tomé and Príncipe 1st Licensing Round

Block AreasBlock 1 – 3,600 km²Block 2 – 5,000 km²Block 3 – 4,200 km²Block 4 – 5,500 km²Block 5 – 2,800 km²Block 6 – 7,500 km²Block 7 – 9,400 km²Block 8 – 8,800 km²Block 9 – 8,400 km²Block 10 – 12,600 km²Block 11 – 9,800 km²Block 12 – 15,000 km²Block 13 – 14,100 km²Block 14 – 18,200 km²

São Tomé and Príncipe Exploration History

Pre 1970 Oil seeps on the islands have attracted interest

1970 Ball & Collins licensed onshore and shallow offshore – drilled two shallow wells near seeps

1990 Island Oil drilled two deep onshore wells near seeps, including Ubabudo-1 drilled to 1501m

1998 Mobil held 18 month Technical Assistance Agreement for whole STP offshore

2001-2005 PGS acquired 10,000 km of 2D seismic in EEZ and 3000 sq km of 3D in JDZ

Seismic Coverage

• PGS Data– ST01– ST02– ST05– ST99

• Western Geco– ROAN

Well Data

Ubabudo-1 several hundreds of metres of sand are present.

• In 1990-1991, Island Oil drilled two wells on the island of Sâo Tomé close to oil seeps. – Esperanca-1 1990, P and A dry) drilled into Tertiary basalt with some Miocene carbonates, with

TD at 859m.

– Ubabudo-1 (1990, P and A dry) , reached 1,501 m and encountered Upper Cretaceous clastics.

Regional Petroleum Geology

Gulf of Guinea Structural Elements

JDZEEZ

Toe Thrust Belt of Niger Delta

Low Relief Structures

Cameroon Volcanic Line (Uplifts and Volcanics)

Edge of Continental Crust and Salt Development (Fracture Zones)

Seismic Sections showing some structural features

• Basement Faulting• Drape• Tertiary fans

Brightening on structure

Brightening on structure

Oil and Gas Kitchens

Akata Formation Kitchen - in oil window due to low heat flow and diminished overburden

Mid-Late Cretaceous Kitchen - areas with >3km of overburden

Zone of potentially locally raised heat flow

São Tomé and Príncipe Seeps

Gas escaping at Ubabudo-1 Oil seep at Ubabudo-1

• Cretaceous oil is currently seeping in to this concrete emplacement of an artesian well on São Tomé.

• Natural oil seeps from both islands belong to separate oil families, although similar in appearance and viscosity.

– São Tomé similar to Azile and Anguille Fm sourced oils in Gabon.

– Seeps in Príncipe more mature.

– Slicks observed offshore Príncipe

Reservoir

•  Good quality sands have even been deposited as far south as Sao Tome. This slide shows some outcropping quartzose sands on the island together with a well drilled through several hundred metres of sands alternated with shales and volcanics, tentatively equivalent to the Agbada Formation.

Play Fairways offshore São Tomé and Príncipe

Distal toe thrusts of the Niger Delta

Low relief structures, fracture zone drape and stratigraphic traps to south of toe thrust zone

Major Tertiary fan systems

Dominantly Cretaceous fan systems derived from Eq. Guinea margin

Cretaceous structural traps and drapes over fracture zones with sediment derived from the Gabon and EG margin

JDZ

EEZ

São Tomé and Príncipe 1st Licensing Round

The First Licensing Round in the Sao Tome and Principe Exclusive Economic Zone is planned to open in Q4 2009, at which time further details will be available.

In the mean time seismic and technical data is available to reviewed (PGS/London & ANP - STP)

São Tomé and Príncipe First License Round - Data Rooms

Sao Tome Data RoomOpens June 2009

UK Data Room

Opens June 2009

– Key Technical Reports (Paper & pdf)– Technical Reports (pdf)– SMT Kingdom Project

Data Room Rules Apply

Details will be available on:

www.anp-stp.gov.st

We welcome you in São Tomé and Príncipe

For further information please visitwww.anp-stp.gov.st