|Exploring for Oil and Gas Traps|
|Series||Treatise in Petroleum Geology|
|Part||Predicting the occurrence of oil and gas traps|
|Chapter||Predicting reservoir system quality and performance|
|Author||Dan J. Hartmann, Edward A. Beaumont|
Water saturation (Sw) of a reservoir is a function of height above free water (h) and pore type. Sw interpretations should be made accounting for h, r35, and pore throat size distribution in the reservoir. The Archie equation is the most widely used method of determining Sw.