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Line 44:
Line 44: − Plot the R<sub>w</sub> value (resistivity of formation water) by plotting the R<sub>w</sub> point along the R<sub>t</sub> scale on the x-axis at the top of the graph grid where porosity is 100%, as shown below. R<sub>w</sub> values are published by logging companies, or we can calculate them from the SP log. − + + +
→Step 2: plot rw point
==Step 2: plot r<sub>w</sub> point==
==Step 2: plot r<sub>w</sub> point==
[[file:predicting-reservoir-system-quality-and-performance_fig9-37.png|thumb|{{figure number|9-37}}See text for explanation.]]
[[file:predicting-reservoir-system-quality-and-performance_fig9-37.png|thumb|{{figure number|2}}Plot the R<sub>w</sub> value (resistivity of formation water) by plotting the R<sub>w</sub> point along the R<sub>t</sub> scale on the x-axis at the top of the graph grid where porosity is 100%.]]
Plot the R<sub>w</sub> value (resistivity of formation water) by plotting the R<sub>w</sub> point along the R<sub>t</sub> scale on the x-axis at the top of the graph grid where porosity is 100%, as shown in [[:file:predicting-reservoir-system-quality-and-performance_fig9-37.png|Figure 2]]. R<sub>w</sub> values are published by logging companies, or we can calculate them from the SP log.
==Step 3: Determine ''m''==
==Step 3: Determine ''m''==