Archie's method

09/11/2000
The May 1, 2000, issue of Oil & Gas Journal carries a feature that begins on page 45 under the headlines "Petrophysical insights contradict Archie's equation" by Lanny Dunham. The article claims in its first paragraph that evidence shows that produced water from hydrocarbon-bearing intervals may have higher resistivity than water in adjacent water-filled reservoir intervals. It goes on to claim in the second paragraph that:"If true, this would indicate that the Archie equationellipseis invalid."From this the subtitle of the article is drawn.The article then goes on for several pages.I have to observe that from a logical point of view all that is indicated in the first paragraph is tha...
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