Page 81 - Origin and Prediction of Abnormal Formation Pressures
P. 81

L   O   m   7:   rn   -   -   -
                                                                             ratios; 4  =  bed,  mid-Triassic; 2  = lines of  equal  water  salinity,  g/l;  3 = isolines of  pore-pressure/hydrostatic-pressure
                                                                           =
                                                                           I















































                                                                             isolines of  the  relief  of  the  top  of  'A'  Fig.  2-24.  Zones of tectonic extension  and oil and gas occurrence, Oymasha oil field, Mangyshlyak Peninsula, west coast of the Caspian Sea, Kazakhstan.  Recent extension  zones;  5 = faults according to seismic data; 6 = wells  (a = economic,
   76   77   78   79   80   81   82   83   84   85   86