Page 191 - Basic Well Log Analysis for Geologist
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Ju  INTERPRETATION  CASE  STUDIES






          100


          5OF-




          20+

        =   .
        3
        §                                                                 50
        x.                                                               2             Figure  80.
                                                                                                             y
        +   ;  -                                                         100               Pickett  crossplot  of  Ry
       q    L                                                                          versus  At  — At,  (58),  Eocene
                                                                                       Wilcox  Sandstonc,  Gulf  Coast.
               5                                                                         transit  time  (i.e.  58  psec/ft)  for
            r
                                                                                       At,,  (58)  is  equal  to  the  interval
                                                                                       the  Wilcox  Sandstone.


           \      am    pod   ob  Pp  bad   i   fo   tt          it        Pot  pig    Solid  dots  are  created  by
                                                                                       overlapping  circles.

            !                5      1.0              5      10     20        50     100
                                               RT

                           Effect   of   grain  size
                    100

                       L.

                       I}                        °0
                                                  oO
                                                °  Cc
                       b                          8
                                                  Qo
                                                  O°
                       |                    '  \   8
           SW  %     50h     ~               \   &,

                                                  O°


                       =                 \


                                            \          VFG         Figure  81.
                       a                               F-MG           Grain  size  determination  by  water  saturation  (S,)
                                                                   versus  porosity  (@)  crossplot,  Eocene  Wilcox  Sandstone.
                      0        1    po                 CG         Gulf  Coast.

                          3         5         1   15  203050








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