Changes

In some places, an empirical relation can be established to predict pore pressure from well logs. [[:file:formation-fluid-pressure-and-its-application_fig5-21.png|Figure 2]] shows sonic travel time varying with measured pressure.

In some places, an empirical relation can be established to predict pore pressure from well logs. [[:file:formation-fluid-pressure-and-its-application_fig5-21.png|Figure 2]] shows sonic travel time varying with measured pressure.

==[[Synthetic seismogram]]s==

==Synthetic seismograms==

Resistivity, sonic, and density logs can be used to construct [[synthetic seismogram]]s which, in turn, can be used to calibrate and refine seismic profiles. Hence, there is a tie-in with geophysical [[modeling]] (directly in the case of sonic–density transforms, indirectly in the case of resistivity transforms).

Resistivity, sonic, and density logs can be used to construct [[synthetic seismogram]]s which, in turn, can be used to calibrate and refine seismic profiles. Hence, there is a tie-in with geophysical [[modeling]] (directly in the case of sonic–density transforms, indirectly in the case of resistivity transforms).