1. logo here… 10 th Inkaba yeAfrica/!Khure Africa (AEON) Conference/Workshop Lord Milner Hotel, Matjiesfontein - Karoo 29 September – 3 October 2014 Shale Gas Potential of Permian black shales in the Karoo Basin, South Africa Naledi Chere 1, 2, 3, Hans-Martin Schulz 3, Brian Horsfield 3, Maarten de Wit 1 1. AEON, Nelson Mandela Metropolitan University, South Africa 2. Geological Sciences, Nelson Mandela Metropolitan University, South Africa 3. Helmholtz Centre for Geosciences, GFZ, Potsdam, Germany

2. Key Exploration Parameters

3. Research Objectives Characterise the shale from the Lower Ecca Group Formations for gas potential

4. Methodology Figure 1: Borehole logging- Council for Geosciences core shed, Donkerhoek, Pretoria

5. Borehole Locality Figure 2: Geological Map of the Karoo Basin, showing the Groups constituting the Karoo Superroup

6. Borehole Locality Massive Diamictite from KL 1/65 Black shale from KL 1/65 Pyrite bands and carbonaceous concretions

7. KL 1/65

8. QU 1/65

9. LA 1/68

10. Other boreholes…..

11. SP 1/69

12. Mineralogy Pyrite in the Whitehill Fm (KW-G009868 & G009881)

13. Microscopy Figure 10, SEM image Prince Albert Fm from Sample G009867, Borehole KL 1/65

14. Conclusions…. 7.35 wt% TOC KI 1/65 High Quartz Content ~brittle?? Absence of smectite Porous organic matter identified Low quantities of adsorbed methane SA 1/66~50m KL 1/65~34m G39934~30M

15. Optimum target zones??

16. Dolerite Sill Contact zone Considerations…. Impact of dolerite sillls on the hydrocarbon Content and hydrocarbon migration paths

17. Further work…. MSc….. Quantify the thickness of the contact aureoles Review the effect of the dolerite intrusions on the shale gas Further subdivide the units in borehole sections, allocation to different formations and regional correlation Core preservation???? Understand the tectonic evolution of the Karoo in relation to the shale gas potential Future work……. Measure the TOC and other parameters for shale units that were not analysed

18. THANK YOU!