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

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Presentation on theme: "Normal text - click to edit NMR T2 Relaxation for Fluid Saturation and Wettability Determination G. ERSLAND IRTG, Oct. 16 th, 2012."— Presentation transcript:

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 – 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


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