ZIMI LIMITED — Investor Presentation 2012

Oct 28, 2012

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WHL Energy Ltd ABN: 25 113 326 524 Level 2, 22 Delhi Street West Perth, WA 6005 P.O. Box 1042, West Perth Western Australia 6872

T: +61 8 6500 0271 F: +61 8 9321 5212 www.whlenergy.com

ASX/MEDIA RELEASE 26th October 2012

WHL PRESENTATION AT “EAST AFRICA: PETROLEUM PROVINCE OF THE 21ST CENTURY” CONFERENCE The Geological Society of London

Australian energy company WHL Energy Limited ( ASX: WHN ) (“ WHL Energy ” or “ the Company ”) is pleased to announce it has delivered a technical presentation at the “East Africa: Petroleum Province of the 21st Century” Conference.

The presentation to the above industry conference run by the prestigious Geological Society of London was given by Dr Paul Robinson, Geological Advisor, for WHL Energy, on 26 October 2012.

The presentation is part of WHL Energy’s campaign to present major advances in developing the prospectivity and exploration potential of the Seychelles to the industry. The presentation titled “ Seychelles Micro-Continent ; An Integration of Regional Tectonics and Stratigraphy to Unlock the Hydrocarbon Potential” is attached and will be available on WHL Energy website.

Ends

FURTHER INFORMATION Shareholders/Investors: Media contact: Steve Noske Colin Hay WHL Energy Ltd Professional Public Relations T: +61 8 6500 0271 T: +61 8 9388 0944 E: contact@whlenergy.com E: colin.hay@ppr.com.au

The summary information on the oil and gas projects in this report has been prepared by WHL Energy Limited full time Exploration Manager Mr Matt Fittall. He is a Geologist [BSc(hons) Geology] of more than 28 years, practising in Petroleum Geology. Mr Fittall has consented in writing to the inclusion of the information in the form and context in which it appears.

About WHL Energy Limited

ASX-listed WHL Energy Ltd (ASX: WHN) is an oil and gas exploration Company focussed on East Africa.

The Company’s “flagship” project is its 17,345 km[2] exploration area offshore Seychelles, owned 100% by WHL Energy. A highly material exploration portfolio and new exploration concepts are being matured in the acreage based on new seismic data and an exploration drilling program is expected in the second half of 2013.

WHL Energy also holds 100% equity in Exploration Permit VIC/P67 in the offshore Otway Basin, approximately 200 km WSW of Melbourne off the Victorian coastline. VIC/P67 contains the undeveloped La Bella gas field in proximity to the Victorian gas market, and several nearby exploration prospects.

The Company in addition holds 33.33% equity in exploration permit WA-460-P, in the offshore Southern Carnarvon Basin, which contains an extension of the very large Palta Prospect. A Shell led Joint Venture has commenced drilling the Palta-1 well in the adjacent block, with an expected completion in late 2012.

The Company is also actively investigating growth opportunities in the wider East African region.

~~Seychelles Micro-Continent~~

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An Integration of Regional Tectonics and Stratigraphy to Unlock the Hydrocarbon Potential

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Paul Robinson, Kim Morrison & Matt Fittall
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Objective and Outline

Using a regional tectonic and stratigraphic framework, calibrate the well and seismic data across the Seychelles Platform in order to better understand the geology and to identify active petroleum systems

 Plate Reconstructions  Well Sequence Identification

 Well To Seismic Calibration

 Calibration Against Regional Analogues

 Seismic Sequence Interpretation  Depositional Sequence Analysis

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• Assessment of Petroleum Potential

Elements of the Seychelles Micro-Continent

E A S T SEYCHELLES A F R I C A MICROCONTINENT Seychelles SOMALI Platform BASIN Saya De Malha Platform MASCARENE BASIN Nazareth Bank 300 km M A DAG A S C A R

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Seychelles Stratigraphy

NW OWEN REITH SEAGULL CONSTANT SE BANK BANK SHOALS BANK

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Western
Platform
REITH BANK-1
OWEN BANK-1 Seychelles
SEAGULL SHOALS-1 Platform
Central
Sub-basin
CONSTANT BANK-1
Correira
Sub-basin
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Western Platform
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Correira Sub-basin

Seychelles Platform PLATE RECONSTRUCTIONS

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Karoo Group – Late Triassic Initial Isalo deposition

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Initial Isalo deposition
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
Magnetic
Chrons
Intra-Eocene Unc
24-13
Intra-Palaeocene Unc 27r-25n
29n-28n
29r
31n-30n
31r
33-32
Turonian FS
34
Mid Cretaceous Unc
M37
-M2
?
Toarcian Unc
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Malm
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

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Karoo Group – Early Jurassic
Continued Isalo deposition; possible mixed shoreline & fluvial conditions
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
Magnetic
Chrons
Intra-Eocene Unc
24-13
Intra-Palaeocene Unc 27r-25n
29n-28n
29r
31n-30n
31r
33-32
Turonian FS
34
Mid Cretaceous Unc
M37
-M2
?
Toarcian Unc
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Malm
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

Somali Rift – Early Jurassic

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Somali Rift – Early Jurassic
Varying intensity of rifting & erosion on the Seychelles Platform
. NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
Magnetic
Chrons
Intra-Eocene Unc
24-13
Intra-Palaeocene Unc 27r-25n
29n-28n
31n-30n
31r
33-32
Turonian FS
34
Mid Cretaceous Unc
M37
-M2
Toarcian Unc Karoo/Ferrar Plume
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Malm
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

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Somali Synrift – Middle Jurassic
Possible good source rock (synrift) deposition
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
Magnetic
Chrons
Intra-Eocene Unc
24-13
Intra-Palaeocene Unc 27r-25n
29n-28n
29r
31n-30n
31r
33-32
Turonian FS
34
Mid Cretaceous Unc
M37
-M2
Depositional analogues in west Madagascar basins
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Malm
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

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Somali Postrift – Late Jurassic
Continued postrift deposition; shelf conditions
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 29n-28n 27r-25n 29r Seychelles ?Hot Spot Mascarene Basin Chrons 28NW INDIAN OCEAN RIFTING -27n Opening of Carlsberg Basin
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin Madagascar
-M2 SPREADING
M25 “Duvalia Marl”
M33 East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
? Davie FZ Transcurrent Movement Bemaraha-Sakaraha fms
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

Somali Latest Postrift – Early Cretaceous Slowing sedimentation; possible hiatus; as precursor to Mascarene rifting

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Slowing sedimentation; possible hiatus; as precursor to
Mascarene rifting
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 29n-28n 27r-25n 29r Seychelles ?Hot Spot Mascarene Basin Chrons 28NW INDIAN OCEAN RIFTING -27n Opening of Carlsberg Basin
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
M33 East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
? Davie FZ Transcurrent Movement Bemaraha-Sakaraha fms
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Geiger & Schweigert 2005 Morondava
Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Mascarene Rifting – Latest Early Cretaceous Major structuring; widespread “rift-shoulder” uplift and erosion

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NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 29n-28n 27r-25n 29r Seychelles ?Hot Spot Mascarene Basin Chrons 28NW INDIAN OCEAN RIFTING -27n Opening of Carlsberg Basin
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
M33 East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
? Davie FZ Transcurrent Movement Bemaraha-Sakaraha fms
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Geiger & Schweigert 2005 Morondava
Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Mascarene Early Postrift – Late Cretaceous
Synrift fill ; development of & deposition in “eastern basins”;
Marion flood basalts in E Madagascar
NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 29n-28n 27r-25n 29r Seychelles ?Hot Spot Mascarene Basin Chrons 28NW INDIAN OCEAN RIFTING -27n Opening of Carlsberg Basin
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
M33 East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
? Davie FZ Transcurrent Movement Bemaraha-Sakaraha fms
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Geiger & Schweigert 2005 Morondava
Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Mascarene Latest Postrift – Late Cretaceous Marine conditions; volcanics possibly due to Gop rifting in the NE

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NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 27r-25n Seychelles ?Hot Spot Chrons 28-27n Opening of Carlsberg Basin
29n-28n Mascarene Basin
29r NW INDIAN OCEAN RIFTING
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
Toarcian Unc ? Davie FZ Transcurrent Movement Karoo/Ferrar Plume SYNRIFT Bemaraha-Sakaraha fms Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

NW Indian Ocean Rift – Middle Palaeocene

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NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 27r-25n Seychelles ?Hot Spot Chrons 28-27n Opening of Carlsberg Basin
29n-28n Mascarene Basin
29r NW INDIAN OCEAN RIFTING
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
Toarcian Unc ? Davie FZ Transcurrent Movement Karoo/Ferrar Plume SYNRIFT Bemaraha-Sakaraha fms Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

NW Indian Ocean Spreading – Early Eocene

Spreading to the northeast continued; mid ocean isolation; carbonate platform conditions persisted to present day

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NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 27r-25n Seychelles ?Hot Spot Chrons 28-27n Opening of Carlsberg Basin
29n-28n Mascarene Basin
29r NW INDIAN OCEAN RIFTING
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
East Africa “Break-up”
Opening of Somali Basin
Ankazoabo & Sakanavaka
Toarcian Unc ? Davie FZ Transcurrent Movement Karoo/Ferrar Plume SYNRIFT Bemaraha-Sakaraha fms Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
----- End of picture text -----*

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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

Regional Context Seychelles Stratigraphy

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----- Start of picture text -----

NW OWEN REITH SEAGULL CONSTANT SE
BANK BANK SHOALS BANK
SW INDIAN
OCEAN
Magnetic RENEWED
Chrons SPREADING Arabian Basin
Intra-Eocene Unc
Seychelles-India “Break-up”
24-13 Deccan Plume Initial India –Seychelles drift
Intra-Palaeocene Unc 29n-28n 27r-25n 29r Seychelles ?Hot Spot Mascarene Basin Chrons 28NW INDIAN OCEAN RIFTING -27n Opening of Carlsberg Basin
31n-30n 33-32 31r SPREADING Mahanoro FZ Active Mauritius FZ Active Chrons 31-28n G O P R I F T I N G
Turonian FS Initial Madagascar –Seychelles drift
Opening of Mascarene Basin
34
Mid Cretaceous Unc M A S C A R E N E ? T R A N S F O R M R I F T I N G
Marion Plume
M37 Morondava Basin
-M2 SPREADING
M25 “Duvalia Marl”
M33 East Africa “Break-up” “Oxfordian Sandstone”
Opening of Somali Basin
Ankazoabo & Sakanavaka
? Davie FZ Transcurrent Movement Bemaraha-Sakaraha fms
Toarcian Unc Karoo/Ferrar Plume SYNRIFT Beronono Fm Andafia Fm “Aalenian Sandstone”
S O M A L I R I F T I N G
UP ISALO GRP
Transitional sequence
Hettangian Unc
Pericratonic basin stage
Mid Triassic Unc LR ISALO GRP
Middle Triassic Hiatus 220-240 ma
Extensive uplift & erosion before major rifting
SAKAMENA GRP
Intracratonic rift stage SAKOA GRP
Comoros
Reunion
Mascarene-
Seychelles -Farquhar Chagos- Laccadive SPREADING
Malm
POSTRIFT
Dogger
s
a
i
L
KAROO SUPERGROUP
----- End of picture text -----*

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*Geiger & Schweigert 2005 Morondava

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Seychelles Platform

WELL SEQUENCE IDENTIFICATION

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Seychelles Well Stratigraphy – Main Age Intervals

==> picture [718 x 465] intentionally omitted <==

----- Start of picture text -----

KAr Ma
~75
~66
~135
~71
~78
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Seychelles Well Stratigraphy – Prime Sequences

==> picture [718 x 465] intentionally omitted <==

----- Start of picture text -----

KAr Ma
Intra-Palaeocene Unc
~75
Turonian FS Mid Cretaceous Unc
~66
Toarcian Unc
~135
~71
~78
----- End of picture text -----

Seychelles Well Stratigraphy – Formations & Tectonic Nomenclature

==> picture [718 x 465] intentionally omitted <==

----- Start of picture text -----

KAr Ma
N W I N D I A N - P O S T R I F T
~75
M A S C A R E N E - P O S T R I F T
~66
K A R O O – U P P E R I S A L O
P O S T R I F T
~135
D U VA L I A
K A R O O – L O W E R I S A L O ~71
~78
S O M A L I
S Y N - P O S T R I F T
B E R O N O N O / B E M R A H A
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Seychelles Platform

CALIBRATION AGAINST REGIONAL ANALOGUES

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Seychelles Well Stratigraphy – Ties to Madagascar

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S O M A L I
P O S T R I F T
D U VA L I A
From Webster & Ensign 2002
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Seismic-to-Well Ties Onshore Majunga Basin NW Madagascar

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M A S C A R E N E P O S T R I F T E Q U I VA L E N T Turonian FS

M A S C A R E N E S Y N R I F T E Q U I VA L E N T Mid Cretaceous Unc S O M A L I P O S T R I F T E Q U I VA L E N T

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From Webster & Ensign 2002

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Seismic-to-Well Ties Onshore Majunga Basin NW Madagascar

Intra Palaeocene Unc

M A S C A R E N E - P O S T R I F T

Turonian FS

Mid Cretaceous Unc Base Toarcian Unc

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KARO O UPPER I SALO GRO UP

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Correira Sub-basin - Seismic Line SY10-039

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C O R R E I R A S U B - B A S I N ESE
Intra Palaeocene Unc
Turonian FS
Mid Cretaceous Unc
Base Toarcian Unc
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WNW

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2D Seismic Line SY10-039
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E – M Jurassic Seychelles and NW
Madagascar Stratigraphy
NW SEYCHELLES
(from WHL Energy 2012)
NW MADAGASCAR
Antsiranana Basin
Ampasindava Analamera-Ankarana
SOMALI Sub-basin Sub-basin
(Papini & (Papini &
SYNRIFT (Rerat 1964) Benvenuti 2008) (Rerat 1964) Benvenuti 2008)
–
POSTRIFT
UP ISALO GRP
LR ISALO GRP
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E – M Jurassic Seychelles and NW Madagascar Stratigraphy

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E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy	E – M Jurassic Seychelles and Central West Madagascar Stratigraphy
				NW SEYCHELLES (from WHL Energy 2012)
							CENTRAL WEST MADAGASCAR Morondava Basin W E /Beronono Fm. SOMALI SYNRIFT – POSTRIFT
										/Beronono Fm.
							POSTRIFT
							UP ISALO GRP	Triassic

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Somali Syn/Postrift-Karoo Relationship, Offshore Tanzania

From McDonough et al 2012

SOMALI POSTRIFT SOMALI SYNRIFT

KAROO WEST SEC T I ON

ION BasinSPAN East Africa 2D Seismic TZ3-2700

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Seychelles – Somali and Mascarene Tectonics & Sedimentation

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Furgo SY10 2D Multi-client Seismic Data Grid

Seychelles Platform SEISMIC SEQUENCE INTERPRETATION

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Seismic Line SY10-008 – Seismic Sequences

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WEST ERN P L AT FO RM
?Base Eocene Unc
Intra Palaeocene Unc
SW 80 km Turonian FS NE
Owen Bank-1
Mid
NW Indian Ocean Postrift
Cretaceous
Unc
Tertiary Carbonates
Mascarene Base
Toarcian
Synrift Unc
KAROO
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2D Seismic Line SY10-008

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Seismic Line SY10-028 – Seismic Sequences

WEST ERN P L AT FO RM

SSW

90 km

NNE

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NW Indian Ocean Postrift Tertiary Carbonates
Early Palaeogene Rift
?Mid Triassic SB
I s a l o F o r m a t i o n
Somali Syn/Postrift
?Base Eocene SB
Intra Palaeocene SB ? S a ka m e n a F o r m a t i o n
KAROO SEQUENCES
Turonian FS
Mid Cretaceous SB
Base Toarcian SB
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2D Seismic Line SY10-028

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Seismic Line SY10-090 – Seismic Sequences

115 km

SSW

NNE

CO RREI RA S UB -BAS I N

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NW Indian Ocean Postrift Tertiary Carbonates
Turonian FS
Mid Cretaceous SB
Base Toarcian SB
?Base Eocene SB
?Mid Triassic SB
Intra Palaeocene SB
Late Cretaceous Postrift Volcaniclastics
Late Cretaceous Mascarene Postrift
2D Seismic Line SY10-090
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Seismic Line SY10-128 – Seismic Sequences

CO RREI RA S UB -BAS I N

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Constant Bank-1
SSW
N W I n d i a n O c e a n P o s t r i f t T e r t i a r y C a r b o n a t e s
?Base Eocene SB
Intra Palaeocene SB
Turonian FS KAROO SEQUENCES
Mid Cretaceous SB
Base Toarcian SB
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NNE

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2D Seismic Line SY10-128

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100 km

Seychelles Platform DEPOSITIONAL SEQUENCES

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Seychelles Platform KAROO PRE-RIFT RESERVOIR

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Karoo Sequence –Primary (Isalo) Reservoir

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Upper Karoo
Partial Erosion
Uplift & Erosion
Upper Karoo
Partial Erosion
Reith
Bank-1
Seagull
Shoals-1
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Seychelles Platform SOMALI RIFT SOURCE & SEAL

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Somali Late Synrift-Postrift Depositional Setting (Toarcian-Albian)

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Owen
Bank-1
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S c h e m a t i c S e c t i o n

High Erosion or Non-deposition Postrift – thin shelf to paralic C o r r e ir a S u b-bas in

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Seychelles Platform MASCARENE RIFT SEAL, SOURCE & RESERVOIR

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Mascarene Early Synrift Seychelles Micro-continent adjacent to Kutch Basin

Late Cretaceous S ey c helles Micro -continent ~95 Ma Cenomanian - Turonian D e v e l o p i n g C o r r e i r a K u t c h S u b - b a s i n B a s i n India

“Mascarene Rift” & synrift – high sedimentation rates with provenance from west India Gujarat region. Possible clastic synrift fill across the western India margin and the Seychelles Platform

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Map by C R Scotese “Plate Tectonic and Paleogeographic reconstructions of the Western Indian Ocean PALEOMAP Project

Mascarene Shelf Prograde Development - Seismic Line SY10-098

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SSW 35 km NNE
Mascarene
Eocene Unc Synrift
Intra Palaeocene Unc
Turonian FS
KAROO
Somali Postrift
Mid Cretaceous Unc SEQUENCES
Base Toarcian Unc
Prograding Delta Clinoforms
Mascarene
Synrift
S o m a l i P o s t r i f t
KAROO
SEQUENCES
Turonian FS Datum
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Mascarene Synrift Depositional Setting (Albian to Turonian FS)

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Synrift Fill
High - ?Non-deposition
Approx. Shelf Edge
C orreira
Sub-basin
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Toarcian-Bajocian Somali Synrift

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Seychelles Platform

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PETROLEUM SYSTEM

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Reith Bank-1
Burial History
INTERVAL OF MAXIMUM
PALAEO-TEMPERATURES
Karoo
Thermal
Event
Marion Deccan
Thermal Thermal
Event Event
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Reith Bank-1
AFTA Constrained Burial History
INTERVAL OF MAXIMUM
AFTA –derived maximum PALAEO-TEMPERATURES
palaeo-temperatures
provide control to palaeo-
heat flow
~110 [o] C
~120 [o] C
>120 [o] C 2032 m
2423 m
2874 m
Karoo
Thermal
Event
Marion Deccan
Thermal Thermal
Event Event
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Pseudowell-B
Burial History- Palaeo-temperature
INTERVAL OF MAXIMUM
PALAEO-TEMPERATURES
Mascarene rift sedimentation
Rapid ?Maastrichtian & Palaeocene
(?volcanics) sedimentation likely
coincident with Deccan heating
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Seychelles Platform Charge Modelling – Difference Maps

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WESTERN AREA:
TWO PHASES OF EXPULSION
~100-90 Ma & ~60-50 Ma
FORMER MORE INTENSE
Oil Expelled (MMbbls/km2)
from Toarcian SR
65-48 Ma Correira
EASTERN AREA:
Sub-basin ONE PHASE OF EXPULSION
~65-50 Ma
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Modelled area controlled by seismic horizon mapped grids

Migration-Accumulation From Toarcian-Bajocian SRs to Isalo Fm (Karoo) Reservoir

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C or r eir a
S ub -bas in
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Summary

 Established tectonic and stratigraphic framework

 New seismic data provided major break-through in understanding

• More confident identification of sub-basins, depocentres, structures and stratigraphy

• Differentiate tectonic, sedimentation & thermal histories in sub-basins

• Ability to more confidently identify reservoir, seal and source units

• Unlock petroleum systems

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Thanks to

Fugro and Geomahkarsa for permission to display SY10 MC2D Seismic Data And Chris Scotese for approval to display the Paleomap Project Plate Reconstructions

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