Archie’s Parameters Determination Techniques in Carbonate Reservoirs: New Technique for More Accurate Parameters

The main objective of this study was to measure Archie's parameters on 29 natural carbonate core plugs at reservoir conditions, using live oil, these core samples were taken from three wells. For this purpose three techniques were implemented to determine Archie’s parameters; conventional technique, core Archie's parameters estimate (CAPE) technique and three dimension (3-D) technique. Water saturation profiles were generated using the different Archie parameters determined by the three techniques. These profiles have shown a significant difference in water saturation values. Such difference could be mainly attributed to the uncertainty level for the calculated Archie parameters. These results highlight the importance of having accurate core analysis's measurements performed on core samples that yield representative a, m and n values that highly influence the water saturation values.