1. Normal text - click to edit NMR T2 Relaxation for Fluid Saturation and Wettability Determination G. ERSLAND IRTG, Oct. 16 th, 2012

2. Normal text - click to edit Fractured Reservoirs

3. Normal text - click to edit Capillary Pressure Oil Pressure Water Pressure Oil Flow Water Flow Counter-Current Imbibition – Fractured Reservoirs

4. Normal text - click to edit Wettability Determination Standard methods for wettability determination –Amott Test –USBM –Contact Angle NMR

5. Normal text - click to edit 5 4) Wettability Sand grain water oil solid water oil  = 0 Water wet Vann oil solid water  = 90 o Neutrally wet solid water oil   180 o oil wet

6. Normal text - click to edit Phase Coherency

7. Normal text - click to edit CPMG Sequence

8. Normal text - click to edit Fast Relaxation Slow Relaxation T2 is a measure of Poresize

9. Normal text - click to edit Poresize Distribution -NMR

10. Normal text - click to edit M0M0 M xy Time M xy = M 0 *exp(-t/T 2 ) Signal Intensity T 2 Relaxation Time Water Oil NMR Homogeneous Magnetic Field N S B0B0

11. Normal text - click to edit Homogeneous Chalk Heterogeneous Limestone T2 versus Wettability

12. Normal text - click to edit Capillary Pressure Oil Pressure Water Pressure Oil Flow Water Flow Counter-Current Imbibition – Fractured Reservoirs

13. Normal text - click to edit Pore occupation – T 2 mapping M0M0 Time M xy = M 0 *exp(-t/T 2 ) Signal Intensity Relaxation time, T2 Water Oil N S B0B0

14. Normal text - click to edit Oleg V. Petrov, Geir Ersland, Bruce J. Balcom, Journal of Magnetic Resonance Volume 209, Issue 1 2011 39 – 46,

15. Normal text - click to edit Pore Occupation – T 2 mapping of counter-current water imbibition in strongly water-wet chalk Shrink Sleeve POM Chalk with oil and 30 % initial water Brine N S

16. Normal text - click to edit Core length T2 (ms) Water Oil Water Imbibition from top – strongly water wet chalk

17. Normal text - click to edit Core length T2 (ms) Water Oil

18. Normal text - click to edit Core length T2 (ms) Water Oil

19. Normal text - click to edit Core length T2 (ms) Water Oil

20. Normal text - click to edit Core length T2 (ms) Water Oil

21. Normal text - click to edit Core length T2 (ms) Water Oil

22. Normal text - click to edit Core length T2 (ms) Water Oil

23. Normal text - click to edit Core length T2 (ms) Water Oil

24. Normal text - click to edit Core length T2 (ms) Water Oil

25. Normal text - click to edit Core length T2 (ms) Water Oil

26. Normal text - click to edit Core length T2 (ms) Water Oil

27. Normal text - click to edit