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Slide 6: Mauritania-Senegal-Guinea Bissau Basin
Mauritania-Senegal-Guinea Bissau Basin Deep water play with giant hydrocarbon potential in the productive Mauritania-Senegal-Guinea Bissau Basin Dana Petroleum Blocks? &8 Pelican gas Chinguetti, Tioff, ‘Tevet, and Banda ail s discoveries Fortessa Theis block Edison Rufisque Profond SHOC gngomor Rusu
Slide 7: Senegal — Proven Petroleum Systems
Senegal — Proven Petroleum Systems Northwest African margin is relatively unexplored, but has had numerous recent and sizeable discoveries Peliean 700 Bef Late Cretaceous 0D marae? AMocene nnguetd 430 mana 420 eunba Miscans 100 Bcf? Late Cretacesus Diam Miadio ‘ : encode 40 Bef Surtees 4 RRB ce Late
Slide 8: Play Type Distribution
Play Type Distrib Schematic Cross-Section Highlighting Play Type Distribution Sangomar - Rufleque Blocks, Offshore Senegal Rufiaque Dome ee |) Turonian » Albian (0) Cancmenian sub-Sosctian weconinemlly fag @ Ganhenate debeis apron Aptlun « Mid Juewenie G) pptian-nsdietie carbonntetuita-up ) ouneara
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4 hase tuts ane ier eier da bie) oe as 2 Hi Fog oie > Hs Fran +> agi Sat rg Raia
Slide 10: Prospect and Lead Inventory
Prospect and Lead Inventory el Mn > Prospect Cl = Cenomanian elt r | | sandstone reservoirs in sub- / wo Senonian unconformity 4-way depth closure (EUR = 180 - 320mmbo) Prospect N3 = Aptian build-up ina 4-way depth way closure (EUR = 120 — 418 mmbo) Leads N2-N5 = Aptian build-ups Lead N6 = Aptian ca
Slide 11: Senonian Sandstone Stratigraphic Potential
Senonian Sancstone Stratigraphic Potential! >» Numerous amplitude packages associated with canyons in steep slope > Significant upside potential requiring 3D to validate > Banda, Okume, Oveng Banda, Okume, Oveng rans
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Slide 13: Other Projects — 2006 Drilling Program
Other Projects — Program IIs) 2006 Drilling fax
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Slide 16: Northwest Territories
Northwest Territories 2-Gannds Highwas “ea Major Foads: ei, Lane: Rivers LOCATION MAP we Provinsin! Capited = Poputared Are
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Slide 20: Jack-Up Rig Drilling the Wei 6-12-1 Oil Discovery Well
JACK-UP RIG DRILLING THE WEI-6-12-1 OIL DISCOVERY WELL
Slide 21: The COSL Jack-Up Rig
THE COSL 931 JACK-UP RIG DRILLING THE WEI-6- 128-1 OIL DISCOVERY WELL
Slide 22: Major Exploration Activities
MAJOR EXPLORATION ACTIVITIES Drilled Wei 6-12-1 discovery well Acquired 460 km? 3D seismic. Farmed out to ROC 2 Appraisal wells & 1 exploration well — southern area of block; disappointing overall. Just drilled Wei 6-12S-1 discovery. - follow up appraisal planned wee
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Slide 24: Multiple pay zones over 500m interval
WE! 6-125-4 1803 Multiple pay zones — 00 m net over 500m interva
Slide 25: Drilled Late April - Early May 2006
Drilled in Late April - Early May 2006 3 km SW of 6-12-1 discovery (2002) A gross interval of ~500 m contains numerous separate reservoir sands Total Net pay ~100 m Oil & Gas tock 222 aor km Avge
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