WRRCTR No. 69 Three-Dimensional Zone Model Log Interpretation

To facilitate the interpretation of geophysical electrical well logging data, the apparent resistivity has been calculated in a model in which the experimental situation is approximated by three coaxial cylindrical zones containing the drilling mud, flushed rock, and surrounding rock matrix, respectively. This three-zone model is shown to yield results that differ by as much as 25 percent from the earlier two-zone model calculations.OWRR Project No. A-032-HI, Grant Agreement No. 14-31-0001-3511 and OWRR Project No. 8-015-HI, Grant Agreement No. 14-31-0001-3073 The programs and activities described herein were supported in part by funds provided by the United States Department of the Interior as authorized under the Water Resources Research Act of 1964, Public Law 88-379