Abstract
The wettability of glass filters and Berea sandstone was investigated using the electric response in the interval 10² - 10 (to the power of 8) Hz. The natural wettability of the materials was modified to get two different sets of samples, one with strong water and the other with strong oil wettability. The samples were saturated to various degrees up to 40% with deionized water or brine. Measurements showed that the electric responses of water-wet and oil-wet samples were markedly different and more complex than those predicted by two standard models. The dispersivity and the loss tangent were found to be the most suitable parameters to check the wettability of the samples.
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