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EXPLORATION OPPORTUNITIES IN NAMIBIA

EXPLORATION OPPORTUNITIES IN NAMIBIA. Obeth Mbui Kandjoze NAMCOR (Pty) Ltd AAPG International Pavilion Dallas April 2004 www.namcor.com.na www.mme.com.na. Talk outline. Fourth Licensing Round Fiscal Changes New data Petroleum Systems The Orange Basin and the Kudu Petroleum System

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EXPLORATION OPPORTUNITIES IN NAMIBIA

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  1. EXPLORATION OPPORTUNITIES IN NAMIBIA Obeth Mbui Kandjoze NAMCOR (Pty) Ltd AAPG International Pavilion Dallas April 2004 www.namcor.com.na www.mme.com.na

  2. Talk outline • Fourth Licensing Round • Fiscal Changes • New data • Petroleum Systems • The Orange Basin and the Kudu Petroleum System • Walvis Basin • Owambo Basin • Summary

  3. Fourth Licensing Round • March 2004 Minister of Mines and Energy announced the Fourth Licensing Round • September 1st-November 30th • Selected blocks in Orange and Walvis Basins • Promotion seminars • London 9th September • Houston 13th September

  4. Fourth Licensing Round • Fiscal changes • Level of APT initiation modified to make marginal projects more attractive • APT1 now initiated at 20 % RRR • APT2 now initiated at 22.5% RRR • Royalty and PIT remain at previous levels (5% and 35%)

  5. Fourth Licensing Round • New data • Seismic • 3300 km of new data acquired in Orange Basin in 2003 • 1016 km of new data acquired in Walvis Basin in 2003 • Surface geochemistry • 52 sites sampled January 2004 • Heat flow • 12 sites measured January 2004 • Condensate biomarker • New analyses August 2004

  6. Overview • The Namibian margin is: • volcanic, but • proven petroleum systems at Kudu and Q1911 • proven source rocks • Aptian • Turonian-Cenomanian • proven reservoir sequences • sands • carbonates • volcanic features provide sand trapping opportunities in deep water

  7. Current activities • 4 current licenses: • 2814-A –Energy Africa, NAMCOR • Block 1711 – Vanco, NAMCOR, Pamue • Owambo Basin - First Africa Oil Company, NAMCOR • Nama Basin - INA Plc

  8. Sedimentary Basins of Namibia Owambo Namibe Walvis-Lüderitz Nama Orange

  9. OrangeBasin • Offshore of major river system • Proven hydrocarbon system • Significant deep water potential

  10. Orange River

  11. Kudu Petroleum System • Significant proven gas reserves – 1.45 tcf • Gas quality excellent • Dry, sweet gas (96% methane) • Low H2S and CO2 • Very small amounts of condensate • High Pressure (7,800 psi) • High Temperature (160 ºC) • c. 4.5 km below sea level • Flow rates in the order of 40 MMscf/day

  12. Petroleum system elements • Source rock – marine Aptian • Condensate biomarkers confirm mature, Cretaceous, marine source rock • Reservoir - interbedded sands and lavas • Largely stratigraphic trap • Barremian-Hauterivian?

  13. Orange Basin Survey • Orange Basin Survey • Acquisition • Survey size: 3,300km • Source Volume: 100 bar metre • Source depth: 6m • Streamers: 8,000m • Record Length: 9s • Shot interval: 25m • Acquisition fold: 160 • Vessel positioning: DGPS • Gravity and magnetics Processing • Includes: Free Surface/Radon demultiple, UTMOST, Kirchoff pre-stack time migration

  14. Orange Basin Survey Dip Line across Kudu gas field

  15. Orange Basin Survey Strike Line to SW of Kudu showing rollover of Kudu interval

  16. Surface Geochemistry

  17. Surface Geochemistry

  18. Surface Geochemistry Gas hydrates found in core

  19. Walvis Basin • Volcanic character • Underexplored • Area 105,000 sq km • Water depths 150-3,000m • 5 wells have proven elements of petroleum system • Proven source rock • Proven reservoir sequences • Sandstones • Carbonates

  20. Source rock

  21. Reservoirs LATE ALB B T L 3700 m P A A D A I M L ? - 3800 m T P 3900 m A A L - N A I 4000 m M E R R A B ? 4100 m 1911/15-1 2012/13-1

  22. Walvis Basin Survey • Walvis Basin Survey • Acquisition • Survey size: 990km • Source Volume: 100 bar metre • Source depth: 6m • Streamers: 8,000m • Record Length: 9s • Shot interval: 25m • Acquisition fold: 160 • Vessel positioning: DGPS • Gravity and magnetics Processing • Includes: Free Surface/Radon demultiple, UTMOST, Kirchoff pre-stack time migration

  23. Walvis Basin Survey • ONDJOU: • 4-way dip closure • 700 sq km • Large, mature kitchen • Conformable impedance amplitude anomalies • Potentially 5 Bbbl oil

  24. Owambo Basin • Large, underexplored • Bitumen occurrences • Analog – Athel in Oman • Same age • Similar carbonate reef facies as reservoirs • Aerogravity/magnetic survey • Commenced 7th April 2004 • c. 7000km, 12 x 60 km • c . 50,000 sq km

  25. Aerogravity and magnetic

  26. Summary • New opportunities available • Significant amount of new data • Attractive fiscal terms • Politically stable • Excellent infrastructure

  27. For more information visit: Booth #22/23, International Pavilion www.namcor.com.na www.mme.com.na

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