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Line 60: − + − {| class = "wikitable"+ − |-+ − ! Step || Action+ − |-+ − | 1 || Find the intercept of R<sub>t</sub> = 1 and the 100% S<sub>w</sub> line (made in the last procedure). − |- − | 2 || From this intercept, draw a line parallel to the x-axis across the plot. Any point on this line has the same porosity. − |- − | 3 || Where this line passes through R<sub>t</sub> of 2, 4, 6, 8, 14, and 20, draw a series of lines parallel to the 100% S<sub>w</sub> line. − |- − | 4 || Points on these lines correspond to S<sub>w</sub> of 71, 50, 41, 35, 27, and 22%. These percentages are calculated from the Archie equation using ''m'' = 2 and ''n'' = 2 at R<sub>t</sub> of 2, 4, 6, 8, 14, and 20. − |}
Pickett plot construction (view source)
Revision as of 14:37, 27 October 2014
, 14:37, 27 October 2014→Step 5: plot sw lines
[[file:predicting-reservoir-system-quality-and-performance_fig9-39.png|300px|thumb|{{figure number|4}}An example of plotting the lower percentages of S<sub>w</sub>.]]
[[file:predicting-reservoir-system-quality-and-performance_fig9-39.png|300px|thumb|{{figure number|4}}An example of plotting the lower percentages of S<sub>w</sub>.]]
After plotting the 100% S<sub>w</sub> line, plot the lines representing lower percentages of S<sub>w</sub> using this procedure.
After plotting the 100% S<sub>w</sub> line, plot the lines representing lower percentages of S<sub>w</sub> using this procedure:
# Find the intercept of R<sub>t</sub> = 1 and the 100% S<sub>w</sub> line (made in the last procedure).
# From this intercept, draw a line parallel to the x-axis across the plot. Any point on this line has the same porosity.
# Where this line passes through R<sub>t</sub> of 2, 4, 6, 8, 14, and 20, draw a series of lines parallel to the 100% S<sub>w</sub> line.
# Points on these lines correspond to S<sub>w</sub> of 71, 50, 41, 35, 27, and 22%. These percentages are calculated from the Archie equation using ''m'' = 2 and ''n'' = 2 at R<sub>t</sub> of 2, 4, 6, 8, 14, and 20.
[[:file:predicting-reservoir-system-quality-and-performance_fig9-39.png|Figure 4]] is an example of following this procedure.
[[:file:predicting-reservoir-system-quality-and-performance_fig9-39.png|Figure 4]] is an example of following this procedure.