A method for pore pressure prediction. The method includes obtaining a
stress sensitivity coefficient, obtaining a compressional wave (P-wave)
velocity and a shear wave (S-wave) velocity for a pre-drill location and
obtaining a first predicted pore pressure. Further, the method includes
iteratively performing calculating a total stress value associated with
the pre-drill location using the first predicted pore pressure associated
with the pre-drill location, and calculating a second predicted pore
pressure associated with the pre-drill location using a stress-pressure
relationship equation, a stress-velocity relationship equation, the
stress sensitivity coefficient, a reference location, and at least one
selected from a group consisting of the P-wave velocity and the S-wave
velocity for the pre-drill location, and adjusting a drilling operation
associated with the pre-drill location, based on the second predicted
pore pressure.