above. Weighted average porosity, permeability, and saturations are calculated 

 for each group. 



Permeability distribution may be expressed in tabular form, or in a number 

 of ways graphically. Block diagrams are often used, and it is not uncommon 

 to plot the permeability of each sample in a consecutive series from the lowest 

 to the highest reading. The presentation of the tabular data can be handled 

 in any number of ways and can be varied to emphasize the features considered 

 most important by the individual operator. 



BIBLIOGRAPHY 



Dodd, C. G., 1951, An analysis of the evaporation method for determining interstitial 

 water: Am. Inst. Min. Met. Eng. Mtg., Petroleum Br., Oklahoma City, Oklahoma, Oct. 3-5. 



Klinkenberg, L. J., 1941, The permeability of porous media to liquids and gases: Presented 

 at Am. Petroleum Inst. Mtg., Tulsa, Oklahoma, May 19-22. 



Messer, E. S., 1950, Interstitial water determination by an evaporation method: Am. Inst. 

 Min. Met. Eng. Mtg., Petroleum Br., New Orleans, Louisiana, Oct. 4-6. 



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