Page 177 - Basic Well Log Analysis for Geologist
P. 177

‘LUG  INTERPRETATION  CASE  STUDIES








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         By
                 L
                                                                                             Figure  67.

                 -
                 }
                                                                                                 Pickett  crossplot
                                                                                             of  Rica  VS.  ON  .
                 a
                 L                                                                          Mississippian
                   =                                                                         Formation,  Williston
                                                                                             Mission  Canyon
                                                                                             basin.  R,  =  100%

                                                                                             line.  See  Chapter VI.
               ,;                !       |      |   i     Liditl     tf      pi  tiiit       water  saturation

                 1               5      1.0              5       io              50      100
                                                   RT






                                      MID™  PLOT

             2.6

                                                  QUARTZ     e

             2.7L                  CALCITE     e

          &                                 &  \
         =   26                         ody   oN
          E                           °  oo      \                         Figure  68.
        as                           5  WO                                    MID*  lithology  plot  of  Mississippian
                        DOLOMITE       <                                  Mission  Canyon  Formation,  Williston  basin.
             2.9  ¢-               Po  8                                  The  solid  circles  represent  matrix  parameters
                                  ANHYORITE   ‘  NX   NY   “y             for  anhydrite,  calcite.  dolomite,  and  quartz.   '

                                                                          Values  for  (p,),  and  (At,,,),  are  from
             3.0        \        l        i                 !             Figures  69  and  70.  See  Chapter  VII.

               30                40                50               60
                                   (Atma  )a  ,  microsec/ft
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