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                Applied Petroleum Geomechanics
                               Rhob from Gardner
                               Rhob from Gardner
                             Vp fm Vs
                             Vp fm Vs
                                    11000
                                    11000
                                            7000
                                            7000
                                        9000
                                        9000
                                                5000
                           15000
                           15000
                                13000
                                13000
                                                5000
                                              Vp from Vs (ft/sec)
                                              Vp from Vs (ft/sec)
                                             Power (Rhob)
                                             Power (Rhob)
                                           Bowers
                                           Bowers
                                         Rhob
                                         Rhob
                                                   2000  2.8  2.8  2.6  2.6  2.4  2.4  2.2  2.2  2.0  2.0  1.8  1.8  6000  6000  4000  4000  2000  Density (g/cc) Density (g/cc)  VES (psi)  VES (psi)  showing  wells  several  in  plots velocityedensity  and  stress,  effective  2011). Wieseneck,  and  (Zhang formations  gas  shale
                                                         densityevertical
                                                   0  0    Haynesville
                            2.8  2.8  2.6  2.6  2.4  2.4  2.2  2.2  2  2  1.8  1.8  1.6  1.6
                                                         (VES),  stress  and  Bossier
                                          Density (g/cc)
                                          Density (g/cc)
                                                   6000
                                                   6000
                                           Vp fm Vs  Vp fm Vs  Bowers  Bowers  Power (Vp fm Vs) Power (Vp fm Vs)  4000  4000  VES (psi)  VES (psi)  effective  the  in  exist
                                                   2000  2000  Velocityevertical  may
                                                   0  0    behavior
                            15000  15000  13000  13000  11000  11000  9000  9000  7000  7000  5000  5000  7.14
                                                         Figure  unloading
                                              Vp from Vs (ft/sec)
                                              Vp from Vs (ft/sec)
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