Dear colleagues,
I measured centrifuge capillary pressure vs average water saturation. Now I want to plot capillary pressure vs corrected water saturation. I plotted corrected first drainage curve. The question is how to plot spontaneous imbibition (based on average saturation) and then plot corrected forced imbibition curve on the same plot? should I shift the sp. imb and forced imb. to the end of first drainage? That way I may end up with water saturation less than what I measured. Or I should just plot PC vs Sw_avg and then corrected curve on them? which again I have a hard time with it, because the face saturation at the end of drainage has changed. However, during the two weeks of spontaneous imbibition, I see a very strong fluid re-distribution in the cores (NMR profile measurement). In that case should I do the second option? Please kindly help me find a reference or explain for me how to do it. Thank you!
I would suggest you read the experimetal work on "Positive imbibition capillary pressure curves using the centrifuge technique" by M. FLEURY, G. RINGOT and P. POULAIN. I am certainly sure with that, all the issues raised above wil be solved.
https://www.onepetro.org/download?id=journal-paper%2FSPE-945114-G
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