Page 235 - Well Logging and Formation Evaluation
P. 235

Solutions to Exercises               225

               Combining the I vs. S w measurements yields an n value of 2.1.




                                n from core measurements

                                                     1000

                                                             Plug1
                                                     100
                                                             Plug2
                    I
                                                             Plug3
                                                     10
                                                             Model (n=2.1)
                                                     1
                     0.1                            1
                                    Sw




               Changing the porosities and  m required the Pickett plot to be re-
            performed, yielding a revised value for R w of 0.025ohmm.



               1000




               100



               10
               1.0 Rt (ohmm)









               0.1
                                                                      Rw=0.025
                                                                      m=1.9
               0.01                                                   n=2.1
               0.01                        0.10                           1.0
                                                  Por (frst)
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