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Line 118: − − [[file:predicting-reservoir-system-quality-and-performance_fig9-34.png|thumb|{{figure number|9-34}}. Copyright: Schlumberger.]]
Spontaneous potential logs in water resistivity calculation (view source)
Revision as of 17:03, 4 March 2014
, 17:03, 4 March 2014→Step 3: convert rmf to rmf eq
==Step 3: convert r<sub>mf</sub> to r<sub>mf eq</sub>==
==Step 3: convert r<sub>mf</sub> to r<sub>mf eq</sub>==
[[file:predicting-reservoir-system-quality-and-performance_fig9-34.png|thumb|{{figure number|3}}. Copyright: Schlumberger.]]
Use the R<sub>mf</sub> at formation temperature obtained above and follow the procedure below to convert R<sub>mf</sub> to equivalent mud filtrate resistivity (R<sub>mf</sub> <sub>eq</sub>).
Use the R<sub>mf</sub> at formation temperature obtained above and follow the procedure below to convert R<sub>mf</sub> to equivalent mud filtrate resistivity (R<sub>mf</sub> <sub>eq</sub>).
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| 1
| 1
| Enter Figure 9-34 with R<sub>mf</sub> at formation temperature on the vertical axis.
| Enter [[:file:predicting-reservoir-system-quality-and-performance_fig9-34.png|Figure 3]] with R<sub>mf</sub> at formation temperature on the vertical axis.
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| 2
| 2
| Read down to R<sub>mf</sub><sub>eq</sub> . This value is used in the equation R<sub>we</sub> = R<sub>mf</sub><sub>eq</sub> (R<sub>mf</sub><sub>eq</sub> /R<sub>we</sub> value).
| Read down to R<sub>mf</sub><sub>eq</sub> . This value is used in the equation R<sub>we</sub> = R<sub>mf</sub><sub>eq</sub> (R<sub>mf</sub><sub>eq</sub> /R<sub>we</sub> value).
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==Step 4: convert SP to r<sub>we</sub>==
==Step 4: convert SP to r<sub>we</sub>==