1. National Oil Corporation of Kenya
Oil and Gas Potential in Kenya
American Association of Petroleum Geologist International Conference.
11th-14th September 2005.
Paris, France
National Oil Corporation of Kenya
National Oil Corporation of Kenya

2. National Oil Corporation of Kenya
KENYA AT A GLANCE
Social:
Government type: Democratic Rep.
Size: 582,646 sq. km
Religion: Christian 78%,
Muslim10%
others 12%
Capital City: Nairobi
Main seaport: Mombasa
National language: Kiswahili
Official language: English
Economic:
Population: million (2003)
Currency: (KSh.)
GDP per capita: US$. 322
Major GDP earners: Tourism, tea, horticulture,
Coffee
National Oil Corporation of Kenya

3. KENYA SEDIMENTARY BASINS
NOTES
Kenya has 4 sedimentary basins
Onshore
1. Anza Basin
2. Mandera basin
3. Tertiary Rift
Offshore
1. Lamu
National Oil Corporation of Kenya

4. OIL EXPLORATION HISTORY
1950’S - Oil exploration commenced
1960 to wells drilled mainly in the Lamu and Anza basins
1981- NOCK was incorporated in 1981
1984 GOK enacted new Petroleum (Exploration and Production) Act.
1986 Petroleum (E & P) Act revised. Royalties replaced by PSC’s
1985 to Further 14 wells drilled
Lamu Basin Study completed.
Tertiary Rift Study complete
Award of offshore PSC’s and reinvigorated exploration
NOTES
To date 30 deep wells drilled
No commercial discovery but encouraging oil and gas shows in some wells
Woodside Energy Petroleum, Dana, Afrex/Pan. Companies have a concession in offshore Kenya.
2D seismic survey completed by Woodside in October 2003 and 2004/2005
Offshore drilling in 2005/2006
National Oil Corporation of Kenya

5. CURRENTLY LEASED ACREAGE
National Oil Corporation of Kenya

6. National Oil Corporation of Kenya
EXPLORATION DRILLING
Anza Basin – 10 Wells
Tertiary Rift Basin –2 wells
Mandera Basin – 2 wells
Lamu Basin – 16 wells
National Oil Corporation of Kenya

7. KENYA GEOPHYSICAL DATABASE
Pre-existing Data
2D Seismic
Onshore : 39,298 km
Offshore : 25,552 km
Aeromag : >268,00 km
Gravity : 12,313 km
Recent Activity
2003/04 7,884km 2D Seismic
2004/05 3,600 2D Seismic
National Oil Corporation of Kenya

8. HYDROCARBON POTENTIAL
Sedimentary Basins
Basin
Area km2
Wells drilled
Aver. Sediment thickness
Lamu
132,770 16
12,000 m
Mandera
51,920 2
10,000 m
Anza
94,220 11
Tertiary Rift
38,904
4,000 m
National Oil Corporation of Kenya

9. National Oil Corporation of Kenya
ANZA BASIN
NOTES
Part of Central African Rift System .
Sediments range from U. Jurassic - Cretaceous to Tertiary.
Sediments: fluvio-deltaic with intermittent volcanics.
Source rock potential is mainly dated Early to Late Cretaceous in SIrius well
Some oil shows in Ndovu-1 and Sirius-1 Wells .
There is a possible correlation between the Anza basin and the Muglad and Melut basins of southern Sudan where oil has been discovered making the Anza basin highly prospective.
Anza
Anza Basin
National Oil Corporation of Kenya

10. HYDROCABON OCCURANCES IN ANZA BASIN
Lower Cretaceous Clastics flowed gas during DST (Ndovu-1 well)
Tarry oil associated with water in Sirius-1 well
Gas shows in Lower Cretaceous sands
Oil shows/flourecence/staining in aptian sands in Ndovu-1 well
Oil shows in:
paleogene in Hothori-1 well
Miocene to Cretaceous in Chalbi-3 well
National Oil Corporation of Kenya

11. National Oil Corporation of Kenya
MANDERA BASIN
Surface Geology of the Mandera Basin
Failed Rift system
Permo-Triassic to Tertiary in age
Sediment thickness ~ 10km
Presence of hydrocarbons supported by > 200m thick sand impregnated with biodegraded asphalt
NOTES
Hydrocarbon potential of Mandera
Potential source Rocks:
shales and marine limestone
Reservoirs:
marls, claystones & mudstones interbedded with the carbonates & tidal channel sandstones and siltstones
Trapping Mechanism:
Anticlinal Faults
National Oil Corporation of Kenya

12. TERTIARY RIFT BASIN(s)
Consisting of at least 9 sub-basins
Oligocene to Pliocene in age
Sediment thickness up to 3 km
Potential reservoirs: up to 40% porosity in sands (Loperot-1 well)
Presence of hydrocarbons supported by oil recovered in Loperot-1 ~ 29o API
NOTES
Tertiary rift covers an area of 38,904 sq km and has sediment thickness up to 3 km and comprises of 9 sub-basin
Source rocks are mainly Shales while reservoirs are sandstones.
National Oil Corporation of Kenya

13. National Oil Corporation of Kenya
STRUCTURAL SETTING
LOPEROT-1
500
1000
1500
2000
2500
3000
3500
4000 W
LOKICHAR BASIN
TVK-13
TVK-12
KERIO BASIN NE
BASEMENT
MIDDLE MIOCENE
LOKICHAR FAULT
LOKONE FAULT
LATE MIOCENE TO
QUATERNARY
EARLY TO MIDDLE
MIOCENE
LOKONE SHALES
PALEOGENE TO
EARLY MIOCENE V
LAVA FLOW
LATE MIOCENE
TO PLIOCENE ?
EARLY TO
MIDDLE
National Oil Corporation of Kenya

14. LOPEROT-1 WELL GEOLOGICAL COLUMN
Drilled by Shell in 1992
Encountered excellent Tertiary reservoirs
Found source rocks with up to 7% Total Organic Carbon
Tested oil ~ 29o API
NOTES
This well was drilled by Shell in 1992 and it encountered non-commercial deposits of oil in the Tertiary section
Potential reservoirs in the well had porosity UP TO 30%
Potential source rocks had up to 17% TOC (Total Organic Carbon)
National Oil Corporation of Kenya

15. National Oil Corporation of Kenya
LAMU BASIN
Lies both onshore & offshore.
Formed during the separation of Madagascar from Africa
Sediments range in age from Upper Carboniferous to Recent
Sediment thickness of up to 12 km
The Tertiary section contains highly prospective source and reservoir units
National Oil Corporation of Kenya

16. REGIONAL STRUCTURAL SETTING
Tertiary
Cretaceous
Jurassic
Triassic
8km W E
SIMBA-1
NOTES
Potential Source Rocks –
Middle to late Jurassic
Turonian
Campanian
Paleocene
Eocene (Kipini Shales)
Reservoir Rocks
Limestone
Trapping Mechanism
Faulted anticlinal structures
Gas Potential in lamu Basin
DST tested gas deposits of 3.1MCF/D in Dodori-1 well,
12.7MCF/D in Pandangua well & Pate-1 well
National Oil Corporation of Kenya

17. LAMU BASIN EXPLORATION POTENTIAL
WELL
DEPTH (M)
RESULTS
Simba-1
3604
Gas show 0.7% C1
Kofia-1
3629
Oil show at 1740 M. And Gas show
Kipini-1
3663
TOC 1.1%
Pate-1
4188
TOC 2%
Maridadi
4197
Oil show at 3660M
Gas and oil shows
Multiple tectonic trends with large faulted 4-Way dip closures off shore
Oil potential includes multiple petroleum systems ranging from Tertiary to Triassic
National Oil Corporation of Kenya

18. EXPLORATION OPPORTUNITIES
Open Blocks
,636 sq km
,528 sq km
- 24,539 sq km
,776 sq km
10A - 15,289 sq km
10B - 25,512 sq km
,786 sq km
12A - 18,788 sq km
12B - 4,169 sq km
L ,305 sq km
L ,979 sq km
L ,636 sq km
L ,025 sq km
L-10 - Offshore Lamu
Relinquished Acreage
National Oil Corporation of Kenya

19. KENYA – FRONTIER INVESTMENT
Political stability with positive investment climate
Large frontier (Onshore/Offshore) acreage
Competitive commercial terms
Acceptable balance of risk/reward.
Previous exploration data readily available.
Low entry cost, no signature bonuses
Award focuses on work programme
Provides investor with growth opportunities
National Oil Corporation of Kenya

20. National Oil Corporation of Kenya
PSC Legal Regime
Dev. & Prod. Period -negotiable
Acreage surrender -negotiable
Surface fees -negotiable,
Training fees -negotiable
Natural gas discovery -Negotiate terms with Government
Initial Exploration Period - with 2 automatic additional
Periods: - terms negotiable
In case of disc field evaluation programme allowed
National Oil Corporation of Kenya

21. FOR FURTHER INFORMATION
Visit: Kenya Booth or
Contact:
Managing Director National Oil Corporation of Kenya.
P.O. Box Nairobi
Telephone
National Oil Corporation of Kenya

22. National Oil Corporation of Kenya
THE END
THANK YOU
National Oil Corporation of Kenya