Normal-trend methods and explicit methods have been used to predict pore pressure in a West Kazakhstan Dolomite field to use in the integrated wellbore stability analysis . Eaton method, Holbrook method and Bowers method were applied with modifications using sonic log data in the study. The modified Eaton method provided the best fit to MDT field data with Eaton’s exponent in the range of 0.1-0.3. Holbrook and Bower methods did not provide good agreement to field data in spite of additional modifications attempted. It was shown that the compaction exponents of the normal-trends methods and explicit methods could vary significantly from the original coefficients and from one basin to another.


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