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ONSHORE / OFFSHORE & NEW
SHALE POTENTIAL OF MOROCCO
Mr M. NAHIM Mrs N. ESSALLOUMI
Kingdom of Morocco
Key aspects of Morocco
• Political and economic stability;
• Economic policy of integration at regional and
international levels;
• Growing and developing infrastructure projects;
• Energy policy based on developing partner’s activities
in the petroleum research;
• Favourable and attractive hydrocarbon’s terms.
ONHYM Perspectives
• Opening of new frontier areas for exploration;
• Use of new technology tools in the exploration
phase (onshore and offshore);
• Exploration and development of new resources
(Oil Shale, Shale Gas & Shale Oil).
Geological Snapshot : Onshore
Paleozoic :
Zag (N), Boudenib (K),
Ouarzazate (L), and Tadla (H)
Triassic :
Essaouira (J),Souss (M), Guercif
(E), High Plateaux (F) and
Missour (G)
Jurassic :
Laayoune (O), Tarfaya (O),
Essaouira (J), Prerif (B)
Cretaceous :
Tarfaya (O), Boujdour (O)
Tertiary:
Gharb (D)
Geological Snapshot : Offshore
MAIN OFFSHORE PROVINCES
Exploration History
Seismic acquired between 1961 et 2011
0
10000
20000
30000
1961
1963
1965
1967
1969
1971
1973
1975
1977
1979
1981
1983
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
2011
Total of 2D seismic : 196 000 Km Total of 3D seismic : 21 938 Km²
Beginning of 3D seismic acquisition
MEDITERRANEAN SEA
Exploration History
Evolution of wells numbers between 1950 and 2011
0
4
8
12
16
20
Avan
t 195
019
5119
5319
5519
5719
5919
6119
6319
6519
6719
6919
7119
7319
7519
7719
7919
8119
8319
8519
8719
8919
9119
9319
9519
9719
9920
0120
0320
0520
0720
0920
11
Num
ber o
f w
ell
Year
308 exploration wells drilled between 1950 and 2011
MEDITERRANEAN SEA
Exploration Status
Open acreage PA & RL • 08 blocs offshore • 13 blocs onshore • 10 blocs under negotiation
• 26 Petroleum Agreements offshore & onshore • 08 Reconnaissance Licences (5 onshore and 3 offshore)
Open acreage, permits and
reconnaissance licences map
• The Essential elements to a working Hydrocarbon systems have
been proven in the Onshore and Offshore Moroccan
sedimentary basins;
• Evidence from hydrocarbon occurrences
(discoveries, shows, surface oil seeps), outcrops and seismic
indicators(HDIs, BSRs);
• Source rocks : Silurian-Devonian, Toarcian, Oxfordian, Aptian-
Albian, Cenomanian-Turonian, Eocene-Miocene;
• Reservoir rocks: Devonian, Triassic, Jurassic, Lower
Cretaceous, Coniacian, Miocene, Oligocene;
• Sealing Rocks: Triassic salt, Jurassic anhydrites, Cretaceous
and Tertiary shale.
Petroleum System Summary
Exploration Results
800 Prospects & Leads in onshore
and offshore Moroccan basins
Example of play concepts Offshore Atlantic
Boujdour Offshore I Lower Cretaceous Lead
• Traps : Stratigraphic (Amalgamated Channels) • Reservoirs: Lower Cretaceous sandstones •Source rocks: Aptian and Jurassic • Seals: Tertiary & Upper Cretaceous marls and shales
N S
0
5 Km
1061-BJ2 Top_Albian
Hz_L. Cretaceous
Amalgamated channels
E W 1314-BJ2
0
5 Km
Amalgamated channels
Hz_L. Cretaceous
F
R
Y
Development of deltaic system within the Lower Cretaceous
Area of channels
Safi Deep Offshore
• Traps: - Structures related to salt tectonics - Stratigraphic: ponded sand • Reservoirs: Lower Cetaceous sandstone turbidites • Source rocks: Aptian and Lower Jurassic (Toarcian) • Seals: Upper Cretaceous marls & shales
Lower Cretaceous Leads
Time slice at 4500 ms of the « Dip of maximum similarity » attribute
Seafloor
H_5
H_4
Ligne RS 114
Crossline 2741 W E
4-way closure
multi pinch-outs
Salt over-hang
Seafloor
H_4
H_5
Ligne RS 114
Line RS00-111 E W
4-way closure
Ponded sand Salt flank Stacked amplitudes
Sub Salt
Salt Diapir
«Shale indicator» attribute map extracted at the Lower Cretaceous (H_5)
Example of play concepts Onshore
Abda Block Triassic Prospects
• Traps : Faulted block and accommodation anticlines
• Reservoirs: Triassic sandstones (TAGI)
•Source rocks: Silurian graptolic hot shale & Frasnian shale
•Seals: Triassic and Liassic interbedded shale & salt
Line DA-05, through the OBZ-1 Well to the D1 Structure
Line DK080006, through the D2 prospect
OBZ-1
Top TAGI
Break Up Unc.
Hercynian Unc.
Ordovician
Base Dev. Lmst
Base Salt
Prospect D 1 NW SE
Areal closure : 9 Km² Gas Reserves : 3,513 Mm3 Condensate Reserves: 113 Mbbls
Top TAGI
Break Up Unc.
Hercynian Unc.
Ordovician
Base Dev. Lmst
Base Salt
Prospect D 2 NW SE
Areal closure : 36 Km² Gas Reserves 7,463 Mm3 Condensate Reserves: 278 Mbbls
D1
Depth map of Upper Triassic Block VII
AsilahBlock Tertiary leads
Larache
Asilah
Block XI
Friska-1 Lead
• Traps : Faulted anticline structures
• Reservoirs: Cretaceous & tertiary turbidites
•Source rocks: Cenomano-Turonian Shale
•Seals: Tertiary shale
Line 09-ASL-11, through the Friska-1 Lead
Line 08-ASL-05, imbricated and folded Miocene play concept TWT structure map at Miocene
Areal closure : 8.1 Km² Recoverable oil (MMBBLS) : 43.4 Mbbls
Unconventional hydrocarbons: Shale potential
Oil shale potential in Morocco
• The efforts of research started
during the Eighties. They are
resumed by national and foreign
partners in concordance with the
Moroccan global strategy.
• Morocco has important oil reserves
contained in the oil shales
(approximately 50 billion barrels,
Timahdit &Tarfaya).
Timahdit
Oil shale potential in Morocco Tarfaya onshore
Cenomanian-Turonian Tarfaya oil shale: 50 m
thick source rock interval, with 2-19% TOCs
Shallow depth: 0 to 1000 m
Area: ~ 200 X 50 Km²
0 10 20 30
TOC (Wt%)
Oil shale potential in Morocco Timahdit section
Timahdit Upper Cretaceous oil shale: Up to 250m thick
interval in an area of 900Km²
Shale gas potential in Morocco
• First geological and geochemical
appraisal of the Paleozoic
depositional systems;
• Other basins worth a deep
exploration work;
• The Mesozoic and Tertiary sediments
have a good potential and should be
considered for shale gas
development plans.
Paleozoic system
Shale gas potential in Morocco
BASIN AREA (Km²) FORMATION TOC (%) Boudenib
34 000 Carboniferous 1 – 1.45
Devonian 1 – 1.3
Silurian 1 – 3
Tadla
10 000 Carboniferous 1 – 2
Devonian 1 – 5.3
Silurian 1 – 12
Doukkala
8 000 Carboniferous 1 – 2
Devonian 1 – 2.48
Silurian 1 – 2.1
Zag 65 000 Devonian 1 – 2
Silurian 1 – 2
High Plateaux
23 437 Carboniferous
1 – 1.6
Paleozoic system
Eastern Anti-Atlas
Ordovician Sandstone
Silurian shale
Shale gas potential in Morocco
Silurian organic rich shale:
•Thickness > 200 m
•Depths 0 to 1000 m
•2-12% TOCs (Lower most hot shale interval)
•Dry gas to over maturation window
Conclusions
• Moroccan sedimentary basins, both onshore and offshore, remain
under-explored ;
• Exploration drilling activity, although limited, and outcrops have proven
the presence of viable petroleum systems;
• New 3D seismic data have permitted to increase the rate of success and
to delineate new prospects;
• Developed play concepts are ranging in age from Paleozoic to Tertiary,
and are of different types;
• In term of unconventional hydrocarbons, Moroccan basins are believed
to have a good potential and worth a deep exploration work.
Future exploration orientations
• Resumption of intensive exploration of the untested plays, both onshore
and offshore, with new ideas;
• Reevaluation and upgrade of the previously indentified prospects and
leads to go ahead for drilling;
• Acquisition of high quality seismic data and use of new reprocessing
techniques and modelling to accurately assess and test the delineated
plays and prospects;
• Intensive exploration programs to prove the unconventional hydrocarbon
potential of the Moroccan basins.
Conclusions
Kingdom of Morocco
THANK YOU
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