Page 175 - Fundamentals of Gas Shale Reservoirs
P. 175

ThE ROlE OF TEcTOnIc AcTIVITIES On PORE PRESSuRE In ShAlES  155
                                            Well#5                              Well#5
                                      DT, NCT_Son ( s/ft)                     RHOB (g/cm )
                                                                                       3
                               140  120   100   80   60    40      1.95  2.15  2.35  2.55  2.75  2.95
                            235                                  235




                            285                                  285

                                                    DT
                                                                                           RHOB
                            335                     NCT_Son      335                       NPHI
                           Depth (m)                PPG_Son     Depth (m)
                                                    DST press
                            385                     test point   385




                            435                                  435




                            485                                  485
                               0.3  0.4   0.5   0.6  0.7   0.8      0.45     0.25     0.05     –0.15
                                      Pressure grad (psi/ft)                   NPHI (%)

                                           Well#5                               Well#5
                                          GR (API)                          Resistivity (ohm)
                                0       100      200       300      0.2       2        20      200
                            235                                  235




                            285                                  285



                                                      GR                                    LLD
                            335                       CALI       335                        VCLGR
                           Depth (m)                            Depth (m)



                            385                                  385




                            435                                  435



                            485                                  485
                                6    8    10    12    14   16        0   0.2   0.4   0.6  0.8   1
                                          CAL (in.)                           VCLGR (%)
            FIGURE 7.18  Estimated pore pressure and well log data against depth over the Kockatea Shale in Well #5 (Beagle Ridge—Perth Basin).
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