Ophir Energy Company Limited Hydrocarbon Prospectivity of Deepwater Southern Tanzania East African Petroleum Conference Arusha March 2007 EAPC 07 TANZANIA AS
Block 3 Block 1 Block 4 Ru vum a Riv e r ACKNOWLEDGEMENTS r ve Ri i fij Ru Prospectivity of Deepwater Southern Tanzania
Established in 2004. SADR x 4 Operator African exploration portfolio, focussed on deepwater. AGC x 1 Operator Somaliland x 1 Operator Highly experienced management team. Tanzania x 3 JDZ x 1 Operator Non-Operator…
Equity/ Country Asset Operatorship SADR x 4 Equatorial Block R 80.0% Operator Operator Guinea Gabon Mbeli 100.0% Operator Ntsina Manga AGC x 1 Gnondo Operator Somaliland x 1 Operator Congo Marine IX 31.5% Non Operator JDZ…
Africa Net Deepwater Acreage (square kilometres) 0 25000 50000 75000 100000 Royal Dutch Shell plc Sonatrach Upstream landscape in Africa is ExxonMobil Corp highly competitive. BHP Billiton Petroliam Nasional Bhd (Petronas) Africa…
Recent surge of interest in East Africa. PETROBRAS DOMINION Experienced and committed Operators in adjacent blocks. Expectation is for rapid increase in operational activity over coming years. Ophir Tanzania Acreage…
Image Ark Courtesy 200km of Ark residual Geophysics bouguer gravity Karroo continental rifting Gondwanaland break-up Development of passive margin Late Carboniferous to Early West Somali Spreading successor basins Jurassic…
Gravity from PGS Website Major change in signature across the Davie Fracture Zone (DFZ), separating continental and oceanic crust. BLOCK 4 Continental crust dominated by N-S trending anomalies that appear to be BLOCK 3…
Pemba Is. Pemba 5 Clear evidence for a working Makarawe-1 PEMBA-ZANZIBAR TUNDAUA BASIN SEEP petroleum system on- and offshore Tanzania: Zanzibar Is. SIN INDIAN BA Gas discoveries in Songo VU Dar es Salaam RU OCEAN…
Tanzania Coastal Basin Ruvuma Basin Basin Scale Compared to Other Provinces
Blocks 3 & 4 2,144km Western 2D data 2,650km Ophir 2006 2D data expected on workstation April 2007 Block 1 1,411km Western 2D data 1,650km Ophir 2005 2D data Seismic Database
Mafia Deep Offshore Basin BLOCK 1 / 3 / 4 R S Southern Tanzania Chronostratigraphy and Petroleum Systems
Seismic Data courtesy of WesternGeco W E Regional Cross-section
Eocene: X - Likely to be immature in the deepwater. U. Cretaceous: - Possible Campanian source though no compelling evidence. - modelled as immature over much of the deepwater, except far south. - Possible Ceno/Turonian source though…
Davie CAR Duvalia Formation (Berriasian to Aptian AGAS Frac shallow to deep marine 249 MB facies) in Southern tu Thin Aptian Shales M AD re Zo TOCs up to 9% Morandava Basin potential for an Excellent…
Songo Songo Winganyongo & Lower Cretaceous (contamination) e Ruaruke SS 5 TOCs up to 11% Z on Lower Cretaceous SS7 TOC up to 5% re SS8 TOC up to 1.57% tu Samples measured rac TOCs of 18% F vie Da Semi-restricted circulation…
Tertiary Deepwater channels and turbidites likely to be sand-prone having been fed by the Rufiji and Rovuma palaeo- drainage systems. Cretaceous (Apt. to Maas.) Deepwater channels and turbidites. Cretaceous (Neoc.) Inboard…
Two types of turbidite deposition: Incised slope channel and valley complexes. Unconfined and ponded basin floor fan channel-lobes and lobes complexes. Reservoir: Superimposed Sand-Prone() Canyon Systems
Note possible Data courtesy of WesternGeco amplitude shut-offs Deepwater Southern Tanzania Structure
Note possible amplitude shut-off Deepwater Southern Tanzania Structure
Possible DHIs
Full Stack Note possible amplitude shut-off Section Flattened on 25% WB Nears minus Fars Deepwater Southern Tanzania Structure
A B A B B CDP Gather A Nears Fars Possible Type III AVO Response
Further data acquisition will be required to mature the portfolio to drillable status. Ophir is seeking opportunities to collaborate with other Operators for the acquisition of 3D seismic and possibly electromagnetic seabed…
Deepwater Tanzania is unexplored. All the critical elements for a working petroleum system can be inferred with a reasonable degree of confidence. Numerous structural and stratigraphic closures (some with possible DHIs) have been…
Ophir Energy Company Limited 118 Piccadilly 1 Roydhouse Street 23 Glenhove Road Mayfair Subiaco WA 6008 Melrose Estate 2196 London W1J 7NW PO Box 463 PO Box 3047 United Kingdom West Perth WA 6872 Johannesburg 2041 Australia South…
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