Page 308 - Origin and Prediction of Abnormal Formation Pressures
P. 308

Undercompacted
                           (overpressured)
                        Enlarged view of
                           shale capillary


                                                  -  ---------------   -   -   -   -   -   -   -   -   -------   shales. Arrows  show  direction of  flow  and velocity  fluids  in  well-compacted  and  undercompacted  (overpressured)  profile  in an enlarged view of  a capillary in  a vertical  direction. S  = salinity. (Modified  after Rieke  and Chilingarian,  1974, f








                         Well compacted         ------------------_  -------------------   -   -   -   --------------   -------  Shale  -------  -------------------  -------------------  -------------------   10-34. Relative  salinities of  interstitial












                                                  S3                           Fig.   1994, fig. 5-26, p.  143.)
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