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232                            Enhanced Oil Recovery in Shale and Tight Reservoirs


                                                   2018).  by  Con-
                                              600        Conference,
                                                   al.,  Induced
                                              300  et  Technology

                                              0    (Zhang  Alteration  Technology
                                              –300  Capillary Pressure (psia)  cores  Wettability  Resources

                                              –600  Ford  Resources

                                              –900  Eagle  for  Unconventional
                                                   and  Scaling
                                              –1200      Unconventional
                                                   Wolfcamp
                          50  40  30  20  10  0      9).
                                         Recovery Factor (%OOIP)
                                              40     August  Performance.
                                              35         the
                                                   for   from
                                              30     S. (2018,
                                              25   pressures  D.  Optimum  permission
                                              20  Interfacial Tension (mN/m)  Schechter,  for
                                              15   capillary  with
                                                   and  I. A.,  reprinted
                                              10     &  Selection
                                                   IFTs,  Adel,
                                              5
                                                   angles,  W. R.,
                                              0        Surfactant  is
                          50  40  30  20  10  0
                                         Recovery Factor (%OOIP)
                                              140    I.  Fluids:
                                              120  contact  Saputra,  use.
                                                   versus  F.,  Completion  further
                                              100    Zhang, http://doi.org/10.15530/URTEC-2018-2889308,

                                              80  Contact Angle (deg.)  factors  in  for  required
                                                   recovery  is
                                              60     paper,  Surfactants

                                              40     URTeC
                                                   Oil  of  permission
                                              20   9.9  following  Addition
                          50  40  30  20  10  0
                                                   Figure  The  the  ference.  whose
                                         Recovery Factor (%OOIP)
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